Helical Clamp

Helical Clamp   

 Precision CNC machining parts  Used as intermediate screw transmission components are collectively referred to as the clamping screw clamping body organs. Because of its simple structure reliable clamping common good and as a result of the small helix angle spiral of self-locking clamping body good clamping force and the clamping itinerary are larger fixture on manual with the most a clamping body.   

  1. Simple screw clamp body

  The simplest spiral as a result of the direct use of clamping bodies pressed workpiece screw head so easy to Precision CNC machining parts  damage the surface of the work piece under pressure or driven rotating work piece. So often in the head with swinging Press. Press with the work piece as a result of friction between the Press and the torque is greater than the friction between the screw torque screw together with the Press will not rotate. 

   Clamping action slow time-consuming loading and unloading the work piece is a single spiral Another drawback of the Clamp. To overcome this shortcoming the rapid clamping bodies can be.

 2.Clamp screw plate    

  Precision CNC machining parts Institutions in the clamping the use of spiral plate is very common common structure of the spiral structure of a typical plate size has been standardized the designer can refer to the relevant national standards and fixture design manual design. 

  

Manipulator

Manipulator

  Robot developed in  Precision CNC machining parts recent decades as high-tech automated production equipment. Industrial robot is an important branch of industrial robots.

 It features can be programmed to perform tasks in a variety of expectations, in both structure and performance advantages of their Precision CNC machining parts own people and machines, in particular, reflects the people's intelligence and adaptability. The accuracy of robot operations and a variety of environments the ability to complete the work in the field of national economy and there are broad prospects for development.

 Precision CNC machining parts With the development of industrial automation, there has been CNC machining center, it is in reducing labor intensity, while greatly improved labor productivity. However, the upper and lower common in CNC machining processes material, usually still use manual or traditional  relay-controlled semi-automatic device. The former time-consuming and labor intensive, inefficient; the latter due to design complexity, require more relays, wiring complexity, vulnerability to body vibration interference, while the existence of poor reliability, fault more maintenance problems and other issues. Programmable Logic Controller PLC-controlled robot control system for materials up and down movement is simple, circuit design is reasonable, with a strong anti-jamming capability, ensuring the system's reliability, reduced maintenance rate, and improve work efficiency.

 Robot technology related to mechanics, mechanics, electrical hydraulic technology, automatic control technology, sensor technology and computer technology and other fields of science, is a cross-disciplinary integrated technology.

The design features of milling fixture

The design features of milling fixture  

As a result of milling and cutting force cutting more and more intermittent cutting edge, easy processing of vibration, so they should pay attention to the design of milling machine fixture: clamping force to be sufficient self-locking and anti-stroke; fixture installation to be accurate and reliable , that is, when the processing installation and the proper use of directional keys on the knife device; precision turned parts specific folder have sufficient stiffness and stability, the structure must be reasonable. 

 precision turned parts As a result of milling and cutting force cutting more and more intermittent cutting edge, easy processing of vibration, so they should pay attention to the design of milling machine fixture: clamping force to be sufficient self-locking and anti-stroke;fixture installation to be accurate and reliable , that is, when the processing installation and the proper use of directional keys on the knife device; specific folder have sufficient stiffness and stability, the structure must be reasonable. 

1. Directional keys

 Directional key position, also known as keys, installed on the bottom of the vertical slot fixture, generally with two, an in a straight line, the farther the distance, the higher the precision-oriented, with screw fastening in the specific folder.   Directional keys work with the milling machine with table-shaped slot in the machine tool fixture to determine the correct position; can absorb part of the cutting torque, reducing the load on clamping bolt to increase the stability of the fixture, so flat and some special drilling jig boring machine fixture is also frequently used.  Directional keys are rectangular and round two.

 2. Of the knife device

   precision turned parts precision turned partsDevices on the knife block and knife by the side of the foot of the fixture and tool used to determine the relative position. The structure of the form of a knife depends on the shape of the surface processing.

  Directional high-precision fixture should not be used or heavy directional keys, but in the specific folder on one elongated side processing as a base to look for is the installation location calibration fixture.Knife block on the pin and screw fastener commonly used in the specific folder, its location should be easy-to-use plug-foot on the knife, without prejudice to the workpiece loading and unloading. On the knife when the knife cutter block with a plug in between the feet with the knife tool to avoid direct contact block or cause damage to the knife blade block premature wear. Cypriot Cypriot feet are flat feet and two-foot cylindrical plug, the thickness and diameter of 3 ~ 5mm, manufacturing tolerance h6.

  Side of the knife block and feet have been standardized (the design can be found in the relevant manual), use the total fixture Sedat map scale should be marked on the knife block size and the work surface and positioning the location between the components. Devices should be installed on the blade of the knife and is easy to cut one end of the workpiece.

  

Numerical control system choice

Numerical control system choice 

  When the numerical control system mainly has three kind of types, the transformation, should act according to the special details to carry on the choice

Step-by-steps the open system which the electrical machinery drives   

   This system servo drive mainly is step-by-steps the electrical machinery, the power step-by-steps the electrical machinery, Cncmachining the battery solution pulse motor and so on. Entering sends out which by the numerical control system for instruction pulse, after the actuation electric circuit control and the power enlargement, causes to step-by-step the electrical machinery rotation, through gear vice- and ball bearing guide screw vice- actuation executive component. So long as the control command pulse quantity, the frequency as well as the circular telegram order, then may control the executive component movement the displacement quantity, the speed and the heading. This kind of system does not need the physical location and the velocity feedback which obtains to the input end, therefore called it the open system, this system displacement precision mainly decided in step-by-steps the electrical machinery angular displacement precision, transmission part and so on gear guide screw pitches the precision, therefore the system displacement precision is low.  

  This system structure simple, debugging service convenient, work reliable, cost low, is easy to reequip successfully

 The asynchronous motor or the direct current machine drive, diffraction grating survey feedback closed loop numerical control system 

  This system and the open system difference is: Cncmachining  Physical location feedback signal which by position detector set and so on the diffraction grating, induction synchromesh obtains, carries on the comparison as necessary with the given value, two interpolations enlargements and the transformation, the actuation implementing agency, by the speed which assigns turns towards the elimination deviation the direction movement, until assigns the position and the feedback physical location interpolation is equal to the zero. The closed loop enters for the system  Enters for the system complex in the structure compared to the split-ring, the cost is also high, requests strictly to the environment room temperature. The design and the debugging is all more difficult than the open system. But may obtain compared to the split-ring enters for a system higher precision, quicker speed, actuation power bigger characteristic target. May act according to the product specification, decided whether uses this kind of system

 The direct current servo electrical machinery drives, encoder feedback semi-closure link numerical control system

 Half closed-loop system examination part installs in among passes in the moving parts, indirectly surveys the executive component the position. It only can compensate a system ring circuit interior part of part the error, therefore, its precision compared to closed-loop system precision low, but its structure and the debugging all compares the closed-loop system to be simple. In makes the angular displacement examination part and the speed examination part and the servo electrical machinery time a whole then does not need to consider the position detector set installs the question

  The current production numerical control system Cncmachining  company factory quite are many, overseas famous company like German SIEMENS Corporation,

 Japanese FANUC Corporation; Native corporation like China Mount Everest Corporation, Beijing astronautics engine bed numerical control system group company, Central China numerical control company and Shenyang upscale numerical control country engineering research center. 

  When choice numerical control system mainly is each kind of precision which the engine bed must achieve after the numerical control transformation, actuates the electrical machinery the power and user's request.

Grinding technology development trend

Grinding technology development trend

 Precision CNC machining parts Grinding machining is important processing technology in mechanical manufacturing. With precision mechanical products, the requirement of increasing the reliability and service life, high hardness, high strength, high wear resistance, high functional new materials application increased, for grinding processing and put forward many new problems, such as material of grinding machining and surface integrity, super precision grinding and high efficiency grinding and grinding automation, etc. Problems to be solved.At present, the grinding technology is moving toward using super hard abrasives, development of precision and ultra precision grinding, high speed, high efficiency grinding technology and the development of high precision, high stiffness of the grinding machine automation direction. 

 One.   In-depth development of grinding theory and technology research

 Precision CNC machining parts Grinding theory research is the basis for the development of grinding technology, the grinding technology and the development of practice and research provides the opportunity for grinding theory, requirement and new topic, in recent ten years, professionals engaged in the work of grinding, grinding technology and phenomenon many factors for a lot of in-depth research and achieved fruitful results.

 Two.  Unit grinding machine high speed, high precision components manufacturing technology 

 Precision CNC machining parts High precision grinding machine spindle unit, feeding unit, bearing unit and auxiliary unit is the key parts and components. Spindle unit including spindle power, shaft, bearing, and frame sections, she affects the precision of the machining system, stability and application scope, its dynamic performance and stability of high performance precision ultra-precision grinding, play a key role. Feed unit including the position detection unit, Demand of feed units, therefore, flexible operation, high resolution, high positioning accuracy, not crawl and large movement range, both to have larger acceleration, and large enough thrust, high stiffness, quick dynamic response, high positioning accuracy. Machine tools supporting technology mainly refers to the supporting member of design and manufacturing technology. Auxiliary unit technology including fast clamping workpiece, high efficiency grinding fluid filtration system, machine safety devices, chip removal and the workpiece cleaning technology, spindle and grinding wheel dynamic balance technology, etc.

Folder specific design

Folder specific design 

 To improve the milling fixture installed in the machine tool stability, Precision CNC machining parts  reduce its intermittent cutting may be caused by vibration, not only in the specific folder have sufficient stiffness and strength, their height and width ratio should also beappropriate, a general H / B ≤ 1 ~ 1.25, in order to reduce the fixture center of gravity, so that as close as possible to the workpiece surface countertops.

Precision CNC machining parts In addition, we must set a reasonable and ear blocks to strengthen the tendons.   If the folder specific wide, can be set up in the same side of two T-slot milling machine table equidistant between the ears Block; of heavy-duty milling fixtures, specific folders should also be set up at both ends of the rings, such as lifting holes or to carry.   In the milling process, the often installed in the milling fixture table, together with the jig with the workpiece feed table for movement.In the milling process, the often installed in the milling fixture table, together with the jig with the workpiece feed table for movement. According to the workpiece feed means of general milling fixture can be divided into the following two types:    

  1. Linear feed-type milling fixture 。In the milling process, the often installed in the milling fixture table, together with the jig with the workpiece feed table for movement.

2. Circle feed milling fixture.Such fixtures are commonly used in the milling machine with rotary table, the workpiece table, together with the fixture with the continuous, slow movement of the rotary feed, no parking will be loading and unloading the workpiece. According to the processing requirements of the two cutter head can also be rough at the same time, finishing  

  Precision CNC machining parts Milling is a flat, keyway, gear and a variety of forming surface processing methods commonly used. Processing the workpiece in the milling machine, the general adoption of the following types of clamping methods:   

   (1) directly in the milling machine table clamping a large workpiece clamping often directly in the table, with stud, plate compactor, which need to dial indicator methods, tools such as zoned to find the needle surface and the cutter is processing relative position.      

 (2) vice flat tool used for clamping the workpiece in the shape of a simple, small parts, general machine tools can be used in clamping vice in the mouth, the need to ensure that when used in machine vice the correct position.

  (3) dividing head with the workpiece clamping, the need for indexing of the workpiece, the general direct clamping head in the sub-degrees. In addition, indexing of the workpiece without dividing head with clamping processing is also very convenient.

 (4) with V-shaped frame workpiece clamping method is generally applicable to.

The material's elastic limit

The material's elastic limit

Precisionmetal parts Within the elastic  range, the limiting value of the stress up to which the stress and strain are proportional, is called the limit of proportionality. In this region, the metal obeys Hooke’s law, which states

 that the stress is  proportional to strain in the elastic range of loading (the material completely regains its original dimensions after the load is removed). In the actual plotting of the curve, the proportionality limit is obtained at a slightly lower value of the load than the elastic limit. This may be attributed to the time-lag in  the regaining of the original dimensions of the material.

  Precisionmetal parts This effect is very frequently noticed in some no-ferrous metals.  While iron and  nickel exhibit clear ranges of elasticity, copper, zinc, tin, etc, are found to be imperfectly elastic even at relatively low values of stresses. Actually the elastic limit is distinguishable from the proportionality limit more clearly depending upon the sensitivity of the measuring instrument.

 When the load is increased beyond the elastic limit, plastic deformation starts.

 Simultaneously the specimen gets work-hardened. A point is reached when the deformation starts to occur more rapidly than the  increasing load. This point is called the yield point Q. the metal which was  resisting the load till then, starts to deform somewhat rapidly, i. e. , yield. The yield stress is called yield  limit.

Precisionmetal parts The elongation of the specimen continues form Q to S and then to T. the stess-strain relation in this plastic flow period is indicated by the portion QRST of the curve. At T the specimen breaks, and

 this load is called the breaking load. The value of the maximum load S divided by the original  cross-sectional area of the specimen is referred to as the ultimate tensile strength of the metal or simply the  tensile strength. Logically speaking, once the elastic limit is exceeded, the metal should starts to yield, and finally break, without any increase in the value of stress. But the curve records an increased stress even after the elastic limit is exceeded. Two reasons can be given for this behavior:

  1. the strain hardening of the material;

  2. the diminishing cross-sectional area of the  specimen, suffered on account  of  the plastic  deformation

Great watches the transformation the necessity

Great watches the transformation the necessity

 From on macroscopic looked that, the industry developed country armed forces, the airplane weapon industry, in the end of the 70's, at the beginning of the 80's started the large-scale application numerical control engine bed. Its essence is, uses the information technology to the traditional industry (including the armed forces, airplane weapon industry) carries on the technological transformations. Except that uses outside the numerical control engine bed, FMC, FMS in the manufacture process, but also includes in the product development carries out CAD, CAE, CAM, the hypothesized manufacture as well as carries out MIS in the production management (management information system), Cnc machining CIMS and so on. As well as increases the information technology in its production product, including artificial intelligence and so on content. Because uses the information technology to the country foreign troops, the airplane weapon industry carries on the thorough transformation (to call it becoming an information based society), finally causes them the product in the international military goods and in the goods for civilian use market the competitive power greatly is the enhancement. But we in the information technology transformation tradition industry aspect compared to the developed country to fall behind approximately for 20 years. Like in our country engine bed capacity, numerical control engine bed proportion (numerical control rate) to 1995 only then 1.9%, but Japan has reached 20.8% in 1994, therefore every year has the massive mechanical and electrical products import. This also on from on macroscopic explained the engine bed numerical control transformation necessity

 Transformation industry starting

   In US, Japan and Germany and so on the developed country, their engine bed transforms took the new economical growth profession, thrives abundantly, is occupying the golden age. As a result of the engine bed as well as the technical unceasing progress, Cnc machining the engine bed transformation is "the eternal" topic. Our country's engine bed transformation industry, also enters from the old profession to by the numerical control technology primarily new profession. In US, Japan, Germany, have the broad market with the numerical control technological transformations engine bed and the production line, has formed the engine bed and the production line numerical control transformation new profession.

 In US, the engine bed transformation industry is called the engine bed regeneration (Remanufacturing) industry. Is engaged in the regeneration industry famous company to include: The Bertsche engineering firm, the ayton engine bed company, Devlieg-Bullavd (are valuable) serves the group, the US equipment company and so on. The American valuable company has set up the company in China. In Japan, the engine bed transformation industry is called the engine bed to reequip (Retrofitting) industry. Is engaged in the reequipment industry famous company to include: Big indentation project group, hillock three mechanical companies, thousand substitute fields labor machine company, wild  engineering firm, shore field engineering firm, mountain this engineering firm and so on

 Numerical control transformation content

   The engine bed and the production line numerical control transformation main content has following several points:

   First is extensively recovers the function, to the engine bed, theproduction line has the breakdown partially to carry on the diagnosis and the restoration;      

 Second is NC, the addend reveals the installment on the ordinary engine bed, or adds the numerical control system, transforms the NC engine bed, the CNC engine bed;   

    Third is renovates, for increases the precision, the efficiency and the automaticity, to the machinery, the electricity partially carries on renovates, reassembles the processing to the machine part, extensively recovers the precision; Does not satisfy the production request to it the CNC system to carry on the renewal by newest CNC;    

   Fourth is the technology renews or the technical innovation, for enhances the performance or the scale, or in order to use the new craft, the new technology, carries on the big scale in the original foundation the technology to renew or the technical innovation, the great scope raises the level and the scale renewal transformation.   

 The new electrical system transforms after, how carries on the debugging as well as the determination reasonable approval standard, also is the technology preparatory work important link. The debugging work involves the machinery, the hydraulic pressure, the electricity, the control, and so on, therefore must carry on by the project person in charge, Cnc machining other personnel coordinate. The debugging step may conform to simplicity to numerous, from infancy to maturity, carries on from outside to in, after also may the partial overall situation, after first the subsystem the.

The numerical control transformation superiorly lacks

The numerical control transformation superiorly lacks

 Reduced investment costs, the date of delivery are short 

  With purchases the new engine bed to compare, may save 60% ~ 80% expense generally, the transformation expense is low. Large-scale, the special engine bed especially is specially obvious. The common large-scale engine bed transforms, Cnc machining only spends the new engine bed purchase

 expense 1/3, the date of delivery is short. But some peculiar circumstances, like the high speed main axle, the tray automatic switching unit manufacture and the installment too requires a lot of work, costs a great deal of money, often transforms the cost to enhance 2 ~ 3 times, with purchases the new engine bed to compare, only can economical invest about 50%.

   Machine capability stable are reliable, the structure is limited

   Uses foundation and so on lathe bed, column all is heavy but the firm casting component, but is not that kind of welding component, after the transformation engine bed performance high, the quality is good, may take the new equipment continues to use many years. But receives the original mechanism the limit, not suitably makes the unprecedented transformation.

  Familiar understood the equipment, is advantageous for the operation service  

 When purchases the new equipment, did not understand whether the new equipment can satisfy its processing request. Cnc machiningThe transformation then otherwise, may precisely calculate the engine bed the processing ability; Moreover, because many years use, the operator already understood to the engine bed characteristic, uses and services the aspect to train the time in the operation short, effective is quick. The transformation engine bed as soon as installs, may realize the capacity load revolution.

 May fully use the existing condition

  May fully use the existing ground, Cnc machining does not need to like buys when the new equipment such to have reto construct the ground.

  May use the newest control technology 

 enhances the production equipment the automated level and the efficiency, improves the equipment quality and the scale, alters to the old engine bed now the horizontal engine bed.

Engine bed numerical control transformation necessity

Engine bed numerical control transformation necessity 

 microscopic looks at the transformation the necessity    

From on microscopic looked below that, Cnc machining the numerical control engine bed has the prominent superiority compared to the traditional engine bed, moreover these superiority come from the computer might which the numerical control system contains

 May process the traditional engine bed cannot process the curve, the curved surface and so on the complex components.

  Because the computer has the excellent operation ability, may the instant accurately calculate each coordinate axis instant to be supposed the movement physiological load of exercise, therefore may turn round thesynthesis complex curve or the curved surface.

  may realize the processing automation, moreover is the flexible automation, thus the efficiency may enhance 3 ~ 7 times compared to the traditional engine bed

 Because the computer has the memory and the memory property, may the procedure which inputs remember and save, then Cnc machining the order which stipulated according to the procedure automatic carries out, thus realization automation. The numerical control engine bed so long as replaces a procedure, may realize another work piece processing automation, thus causes the single unit and the small batch of production can automate, therefore is called has realized "flexible automation

  Processings components precision high, size dispersion degree small, makes the assembly to be easy, no longer needs "to make repairs".

  May realize the multi- working procedures centralism, reduces the components in engine bed between frequent transporting.  

  Has auto-alarm, the automatic monitoring, automatic compensation and so on the many kinds of autonomy function, thus may realize long time nobody to safeguard the processing. 

  Advantage which derives by above five.

   For example: Reduced worker's labor intensity, saved the labor force (a person to be possible to safeguard the multi- Taiwan engine bed), reduced the work clothes, reduced the new product trial manufacturing cycle and the production cycle, might to the market demand make rapid reaction and so on. 

  Above these superiority are the predecessor cannot imagine, is an extremely significant breakthrough. In addition, Cnc machining the engine bed numerical control carries out FMC (flexible manufacture unit), FMS (flexible manufacture system) as well as CIMS (computer integration manufacture system) and so on the enterprise becoming an information based society  transformation foundation. The numerical control technology already became the manufacturing industry automation the core technology and the foundation technology

Machine design

Machine design

 Precision CNC machining parts Machine design is the art of planning or devising new or improved machines to accomplish specific purposes. In general, a machine will consist of a combination of several different mechanical elements properly designed and arranged to work together, as a whole. During the initial planning of a machine, fundamental decisions must be made concerning loading, type of kinematic elements to be used, and correct utilization of the properties of engineering materials. Economic considerations are usually of prime importance when the design of new machinery is undertaken. In general, the lowest over-all costs are designed.

Precision CNC machining parts  Consideration should be given not only to the cost of design, manufacture the necessary safety features and be of pleasing external appearance. The objective is to produce a machine which is not only sufficiently rugged to function properly for a reasonable life, but is at the same time cheap enough to be economically feasible.

  Precision CNC machining parts The engineer in charge of the design of a machine should not only have adequate technical training, but must be a man of sound judgment and wide experience, qualities which are usually acquired only after considerable time has been spent in actual professional work.

The main types of milling machine fixture and structure of the form

The main types of milling machine fixture and structure of the form

  Milling fixture for machining parts on the main plane, groove, keyway, spline, and the gap as well as face shape. Precision metal parts Usually as a result of milling fixture table together with the feed movement, in different ways according to the feed milling fixture can be divided into straight-line feed type, feed circular mode and rely on three types of feed-type.

 1. Linear feed-type milling fixture

  This type of milling machine with the most. Precision metal parts Fixture installed in the milling machine table, the processing in a straight line with the feed table by way of movement.  According to the workpiece quality, structure and production quantities will be designed as a one-piece fixture points more than the parallel and more than a row followed by clamping of the linkage approach, sometimes the use of sub-degree institutions, both to improve production efficiency.

 2. Circle-type milling machine fixture feed  

Circle feed milling in the case of non-stop loading and unloading the workpiece, the general is a multi-tasking, and in the milling machine rotary table use.   Precision metal parts This fixture is compact and easy to operate, mobile time and auxiliary time overlap is high-performance milling fixture, for use in high-volume production.

  3. By mold milling fixture 

 Precision metal partsThis module depends on the milling machine with a fixture used in dedicated or universal milling machines on the processing of various non-circular surface. On the role of mold is to make access to supplementary motor workpiece to form a profile campaign. Movement by way of the main feed through mode can be divided into straight-line milling machine fixture and circle into the feed to the two.

Grinding automation and intellectualization

Grinding automation and intellectualization 

 Precision’s grinding With mechanical manufacturing in FMS (flexible manufacturing system) and CIMS (computer integrated manufacturing system), IMS (intelligent manufacturing system) height automation development direction, the grinding automation requirements are put forward. The development of the CNC grinding machine with CNC lathe, milling machine and so on started late. In the 1980 s and 90 s is a CNC grinding machine for rapid development and entered the popularizing period of practical. In recent years, almost all kinds of grinder CNC products, CNC tool grinding machine from 3 to 10 shaft axis development. Which can realize online measurement, automatic switching of grinding wheel and the emergence of the automatic unloading workpieces milling machining center, mark CNC grinding reached a new level. Grinding CNC system development also have great progress, many special grinding CNC software and systems have been commercialized. In the 1990 s, Japan announced about intelligent grinding results. Use of monitoring information and database, adaptive optimization in grinding condition and the judgment condition of grinding, using computer simulation and virtual technology, establish a realistic virtual grinding environment, to implement the intelligent of the grinding. Continuous track the use of grinding technology, making the grinding technology has made great development. 

 Grinding process monitoring and detection technology   

  Precision’s grinding  Implementation of intelligent computer control of grinding, grinding process is an important problem in the control room. Solve the grinding process, such as the phenomenon of signal identification, signal sampling, signal processing, feedback and compensation, need high sensitive sensor, also need to have expert system or intelligent system and the software design and other technical support.For grinding wheel wear and tear of using acoustic emission monitoring system. Because of the complexity of the grinding process, the grinding process of the monitoring system in theory and practical aspect still has many problems unsolved. Parts after the grinding size, shape and position accuracy, surface quality of the test is divided into offline and online detection.For super precision grinding and free abrasive machining high precision and low surface roughness obtained after detection, high-precision grinding on the surface of the on-line automatic detection are much harder than cars, milling, high sensitivity is the key to development of sensor technology and signal acquisition, recognition and processing technologies.

  Software of grinding technology

  Precision’s grinding  High performance CNC grinding machine should be equipped with a complete software system. Of intelligence information processing and data input of grinding, grinding mode selection and grinding the arrangement of the order, condition of grinding, grinding wheel dressing and grinding automatically selected, the state of the grinding process simulation and virtual detection and compensation, are in software design and development of a reasonable solution.All countries in the development of expert system and intelligent system software. Expert system is a branch of artificial intelligence research, and its essence is a kind of application system. Problem solving ability with expert level in the field of grinding process system, can effectively solve complex problems in the field of grinding.

Renoho precision Machinery Co. , Ltd profile.

 

Renoho Precision Machinery Co. ,Ltd. was established in Dec. 2013 in Changan town, Dongguan City. Mainly dedicates to develop and manufacture precision components for optical communication products， Diving Equipment, Industrial class air tools and electronics industry precision parts

  The main production equipments include CNC machining center, CNC lathe, CNC cylindrical grinding, Surface Grinding, And wire-cutting machine and etc..  We focus on quality-assurance service and continuously investing in development and innovation, obtained rich experience with a professional team in production technology.

 Renohomt Leading products:

                       1.Precision machining parts for communication equipment and laser equipment;

             2. Precision machining parts for automation equipment

             3.Precision machining parts for the electronics industry

             4.Precision machining parts for other equipment      

Titanium Alloy Material parts

Titanium Alloy Material parts

Introduction of Machining

Introduction of Machining

  Precision CNC machining parts Machining as a shape-producing method is the most universally used and the most important of all manufacturing processes. Machining is a shape-producing process in which a power-driven device causes material to be removed in chip form. Most machining is done with equipment that supports both the work piece and cutting tool although in some cases portable equipment is used with unsupported workpiece. 

 Precision CNC machining parts  Low setup cost for small quantities. Machining has tow applications in manufacturing. For casting, forging, and pressworking, each specific shape to be p5roduced, even one part, nearly always has a high tooling cost. The shapes that may be produced, even one part, nearly always has a high tooling cost. The shapes that may be produced by welding depend to a large degree on the shapes of raw material that are available. By making use of generally high cost equipment but without special tooling, it is possible, bu machining, to start with nearly any form of any material, so long as the exterior dimensions are great enough, and produce any desired shape from any material. Therefore, machining is usually the preferred method for producing one or a few parts, even when the design of the part would logically lead to casting, forging or pressworking if a high quantity were to be produced.  Close accuracies, good finishes. The second application for machining is based on the high accuracies and surface finishes possible.

 Precision CNC machining parts  Many of the parts machined in low quantities would be produced with lower but acceptable tolerances if produced in high quantities by some other process. On the other hand, many pars are given shapes by some high quantity deformation process and machined only on selected surfaces where high accuracies are needed. Internal threads, for example, are seldom produced by any means other than machining and small holes in pressworked parts may be machined following the pressworking operations.

  

The Numerical Control Engine Bed Transforms

The Numerical Control Engine Bed Transforms

 Numerical control system development summary brief history and tendency

 In 1946 the first electronic accounting machine was born in the world, this indicated the humanity created has been possible to strengthen and partially to replace the mental labor the tool. Cnc machining It with the humanity these which in the agriculture, the industry society created only is strengthens the physical labor the tool to compare, got up the quantitive leap, entered the information society for the humanity to lay the foundation. 

  After 6 years, in 1952, computer technology applied to the engine bed , the first numerical control engine bed were born in US. From this time on, the traditional engine bed has had the archery target change. Since nearly half century, the numerical control system has experienced two stages and six generation of development.

 Numerical control (NC) stage (1952 ~ 1970) 

  The early computer operating speed is low, was not big to then science computation and the data processing influence, but could not adapt the engine bed real-time control request. The people can not but use numeral logic circuit "to build" to become an engine bed special purpose computer to take the numerical control system, Cnc machiningis called the hardware connection numerical control (HARD-WIRED NC), Jian Chengwei numerical control (NC). Along with the primary device development, this stage has had been through repeatedly three generations, namely 1952 first generation of -- electron tube; 1959 second generation of -- transistor; 1965 third generation -- small scale integration electric circuit.

 Computer numerical control (CNC) stage (in 1970 ~ present) 

 In 1970, the general minicomputer already appeared and the mass production. Thereupon transplants it takes the numerical control system the core part, from this time on entered the computer numerical control (CNC) the stage ("which should have computer in front of the general" two characters to abbreviate). In 1971, American INTEL Corporation in the world first time the computer two most cores part -- logic units and the controller, used the large scale integrated circuit technology integration on together the chip, called it the microprocessor (MICROPROCESSOR), also might be called the central processing element (to be called CPU)

 The microprocessor is applied to 1974 in the numerical control system. This is because minicomputer function too strong, controlled an engine bed ability to have wealthily (therefore once uses in controlling the multi- Taiwan engine bed at that time, called it group control), was inferior to used the microprocessor economy to be reasonable. Moreover then small machine reliability was not ideal. The early microprocessor speed and the function although insufficiently are also high, but may solve through the multi-processor structure. Because the microprocessor is the general-purpose calculator core part, therefore still was called the computer numerical control

 In 1990, PC machine (personal computer, domestic custom had called microcomputer) the performance has developed to the very high stage,Cnc machining may satisfiedly take the numerical control system core part the request. The numerical control system henceforth entered based on the PC stage.  In brief, the computer numerical control stage has also experienced three generations. Namely 1970 fourth generation of -- minicomputer; 1974 five dynasties -- microprocessor and 1990 sixth generation -- (overseas was called PC-BASED) based on PC.

   Also must point out, although overseas already renamed as the computer numerical control (namely CNC).  

  Also must point out, although overseas already renamed as the computer numerical control (namely CNC), but our country still the custom called the numerical control (NC). Therefore we daily say "numerical control", the materially already was refers to "computer numerical control".

The development trend of manipulator

The development trend of manipulator   

  Current industrial applications of the manipulator gradually expanding, cnc machining parts constantly improve the technology performance. Due to the short development time, it has a gradual understanding of process, the manipulator and a technically perfect step by step process, its development trend is

  1、To expand the application of manipulator and processing industry   

At present domestic robots used in mechanical industry more in cold working operations, while in the hot work such as casting, forging, welding, heat treatment less, and the application of assembly work, etc. So processing work items heavy, complicated shape and high environmental temperature, bring many difficulties to manipulator design, manufacture, cnc machining parts it is need to solve the technical difficulties, make the manipulator to better service for processing work. At the same time, in other industries and industrial sectors, also will with the constant improvement of the industrial technology level, and gradually expand the use of the manipulator 

2、Improve the work performance of the industry manipulator    

Manipulator in the working performance of the pros and cons,determines the application and production, cnc machining parts it can normal manipulator working performance of the repetitive positioning accuracy and speed of work two indicators, decided to ensure the quality of manipulator can complete the operation of the key factors. Therefore to solve good working stability and rapidity of the manipulator's request, besides from solve buffer localization measures, should also be development meet the requirements of mechanical properties and low price of electro-hydraulic servo valve, servo control system was applied to the mechanical hand.

The composition of clamping devices

The composition of clamping devices

 Precision CNC machining parts In the machining process the work piece by the cutting force, centrifugal force, inertia  force, such as the role of, in order to ensure that these external force, the workpiece can remain in the fixture by the positioning of the processing to determine the location of components, and should be no vibration or displacement, fixture structure should be set up reliable work piece clamping device folder will be in prison.

  First, the composition of clamping devices  

   Many different types of clamping devices, but their structures are composed of two parts.

  1.  Precision CNC machining parts Power plant The source of clamping force, one human; second is generated by a power device.The device can generate power as the power unit fixture. Commonly used in power plant are: pneumatic devices hydraulic devices electrical devices electromagnetic devices gas - liquid interaction devices and vacuum devices. Fixture as a result of manual clamping force from the human so it does not power plants.

  2. Clamping part 

    Receive and impart into the original clamping force to clamp the task force and part of the implementation of the general composition of the following agencies:      

1) to accept the original force of bodies. Such as handles nuts and used to connect the institutions such as cylinder piston rod.  

   2)  Precision CNC machining parts Force the middle of delivery. Such as hinges

 levers and so on.  

   Force delivery of them in the middle of the original transmission of force to the process of clamping devices can play such as changes in the direction of force to change the size of forces as well as the role of self-locking and so on.

  3) Clamping components. Such as plate such as screws.  

The comprehensive impetus electric spark development direction

The comprehensive impetus electric spark development direction

For the comprehensive impetus electric spark forming processing equipment technology advancement, while uses the advanced control system, the engine bed structure design also needs further to consummate, its main development direction displays in following two aspects: (1) straight line servosystem application

 Precision wire cutting The electric spark forming processing equipment uses the straight line electrical machinery servosystem to be possible to cause the workability to obtain the distinct improvement, the concrete manifestation is:  May realize the axis direct translation, omits a guide screw nut transmission link, thus guarantee axis high speed movement;  Uses the straight line electrical machinery and the slide integration structure, may eliminate between the slide and the electrical machinery because of has the machinery lag in response phenomenon which the middle link causes, enhances the system the sensitivity, reduces the dynamic response time, the guarantee processing process stability;  The straight line electrical machinery servosystem mode of motion had decided its position examination link must use the straight line position feedback part, the realization not middle link direct position examination, thus constitutes an entire closed-loop system, the guarantee processing process high accuracy and the precision retentivity. At present, the straight line servosystem application in deep narrow, the small die space processing and a mould pressing components mold multi-cavity processing aspect has the obvious technical superiority. But, these technical superiority must realize truly, except must unify the electric spark forming processing electric discharge process characteristic, outside the solution straight line servosystem itself technical difficult problem, but also must solve a series of and the straight line servosystem necessary related technology, like translation system dynamic equilibrium, work table structure improvement and so on.

 (2) engine bed mode of motion improvement

 Precision wire cutting Breaks through the existing electric spark forming processing engine bed mode of motion the limitation, is displays its technical superiority, impels its industrial development another important way. The model modern machining technology development experience, may direct the human circular motion in the engine bed main processing forming movement foundation, specially uses the multiple spindle rotary system and many kinds of translation coordinating group synthesizes many kinds of compound motion way, adapts the different type work piece processing request, the expanded electric spark forming processing processing scope, enhances it in the precise processing aspect comparison superiority and the technical benefit. At present, many electric spark forming processing engine bed has made some improvements in the mode of motion, if Swiss Arch Company produces AGIF the MONDO STAR20(50) engine bed has the EQUIMODE function, can realize the spatial any direction hemisphere stable motion, this kind of stable motion function has the very high practical value in the actual processing. But the present electric spark forming processing engine bed additionally builds the mode of motion is also unitary, the application scope is limited. The electric spark forming processing must in aspects and so on processing precision, processing efficiency, processing scope obtain the significant breakthrough, an important development direction is to the engine bed forming mode of motion innovation and the diversification. Recently, Japan University of Tokyo -odd component doctor, increased Ze prosperous long Professor and so on to propose loss concepts and so on electrode, namely through to processed the way the reasonable plan, might cause the electrode to lose is at and so on the loss conditions, thus caused the compensation which the electrode lost to become extremely simple. This concept statement has provided the essential theory basis for the electric spark forming processing mode of motion improvement. Certainly, produces from this the engine bed structural change and the correlation technology theory research also must further the deep person and the consummation, even has the possibility to develop one kind of brand-new processing theory.

  Precision wire cutting In addition, the engine bed overall construction design must consider fully the environmental protection as well as a human machine coordination, with the aid of the advanced design method and the method (for example CAD, the finite element analysis and so on) carry on the comprehensive optimized design to the engine bed structure, enhances the engine bed structure fully the sophistication and the rationality.

General transformation of multi-axis drilling machine drilling machin

General transformation of multi-axis drilling  machine drilling machin 

Cnc milling machine small and medium enterprises in product quality and  production efficiency are the need for a new increase. But the processing means is far from sufficient. Many small and medium enterprises with their actual technical state of equipment improvements, through strengthening its own. In order to self-development.Common drilling for single-axis machine tools, but the installation will become a multi-axis multi-axle box of the drill, transformation into a multi-axis drilling, we could greatly shorten the processing time, improve production efficiency.            

   Application of multi-axis machining ：

 Cnc milling machine According to statistics, in general machine  tools in the workshop in general, the average cutting time rarely exceeds 15% of total working hours. The remaining time is plug-in, loading and unloading the workpiece, exchange tools, operation tools, measurements, and clear the iron filings and so forth. Although the use of CNC machine tools can improve 85%, but the purchase of costly. In some cases, even if the high productivity, but the processing of the same components, the cost is not necessarily lower than the average machine. Therefore must be more to shorten the processing time. Different processing methods have different characteristics, the drilling process, the multi-axis machining is a small investment to increase productivity through effective measures. 

The advantages of multi-axis machining ：

Although it is not the first in automatic  multi-axis adjustable long line applications, but only limited to high-volume production. Even with the adjustable multi-axis head expanded the scope of use is still far from being able to meet the volume is small, hole complex requirements. In particular, as industrial development, large and complex multi-axis machining is even more compelling. For example, large-scale nuclear power plants in the water-wall tube plate condenser has 15000 ψ20 holes, if radial drilling machine processing, and simply drilling holes and countersink countersunk head is necessary to 842.5 hours, while also crossed hours 151.1 hours. However, if the 8-axis CNC machining floor drilling, drilling countersink holes as long as 171.6 hours, crossed is also simple, as long as 1.9 hours. Therefore, the use of numerical control of two axis, so that proper alignment tool processing location, combined with multi-axis machining can not only expand the range of processing, but also on the basis of improving the accuracy can greatly enhance the work efficiency, easy to quickly create original processing parts. Some analysis of large high-speed diesel engine with 30 kinds of box-shaped rod-shaped parts of the more than 2,000 drilling operations, 40% could be the automatic replacement of machines using two-axis spindle box, three-axis or four-axis multi-axis machining head, the average can be reduced 20% of the processing time. Machine Tool Exhibition in Paris in 1975 also reflected the multi-axis machining using more and more the trend.   

Multi-axis machining equipment ：

 Cnc milling machine  Multi-axis machining is the same time in a feed  processing a number of holes or simultaneously in many of the same or different processing of a workpiece on each hole. This will not only shorten the cutting time and improve accuracy, reduce fixturing or positioning time, and in the CNC machine tool is not necessary to calculate the coordinates, reducing the number of character blocks

and simplified programming. It can be processed using the following equipment: radial drillingvertical drilling, or upload multi-axis head, multi-axis drilling machine, multi-axis modular machine tool spindle box heart and automatic replacement of machines. May even be able to automatically adjust wheelbase by two or more of the spindle axle box, junction  All CNC vertical and horizontal table two directions of movement, processing a variety of round or oval-shaped hole group of one or several steps. Now the status quo in this regard to make a profile。

Development of modular robots

Development of modular robots 

   Variable application manipulator from the characteristics of the manipulator itself, more adapted to the product type, equipment updates, many varieties, small batch, but its cost is high, the special manipulator and cheap, but the scope is limited. Therefore, precision metal parts for some special purpose, you need special design, special processing, thus improving the product cost. In order to adapt to the request of the application field of classify, the structure of the manipulator can be designed to the form of combination. Modular manipulator is a common parts according to the requirement of the job, select necessary to accomplish the function of the unit components, based on the base of combination, deserve to go up with adaptive control part, namely the manipulator with special requirements can be completed. It can simplify the structure, take into account the specificity and design on the use of generality, more in the series design

and organization of standardization, specialized production, to improve quality and reduce cost of the manipulator, is a kind of promising manipulator

  Has a "vision" and "touch" of so-called "intelligent robots"    

 For artificial has flexible operation and the need for judgment of the situation, industrial manipulator is very difficult to replace human labor. Such as in the working process of the accident, disorders and conditions change, etc., manipulator cannot be automatically distinguish correct, but to stop, after waiting for people to rule out accident can continue to work. As a result, people puts forward higher requirements on mechanical hand, hope to make it a "vision", "touch", etc, make it to the judgment, precision metal parts the choice of object, can be continuously adjusted to adapt to changing conditions, and can perform a "hand - eye coordination. This requires a computer can handle a lot of information, require them to exchange of information with machine "dialogue".   

   This "vision", "touch" feedback, controlled by computer, is one part of the "smart" mechanism is called "intelligent robots". Is the so-called "smart" includes: the function of recognition, learning, memory, analysis, judgment. And recognition is through the "visual", "touch" and "hearing" feel "organ" of cognitive object.     Which has the function of sensory robot, its performance is perfect, can accurately clamping arbitrary azimuth objects, determine an object, weight, work over obstacles, the clamping force is measured automatically, and can automatically adjust, suitable for engaged in the operation of the complex, precision, such as assembly operation, it has a certain development prospects.  

  Intelligent robots is an emerging technology, precision metal partsthe study of it will involve the electronic technology, control theory, communication technology, television technology, spatial structure and bionic mechanical discipline. It is an emerging field of modern automatic control technology. With the development of science and intelligent robots will replace people to do more work.

Rapid economic modeling techniques

Rapid economic modeling techniques

 Shorten the product development cycle is an effective means of market competition to win one.  Compared with the traditional mold process, cnc milling machine fast economic modeling technology is a short molding cycle, the characteristics of low cost, precision, and life can meet the production needs, overall economic efficiency is more significant in the mold manufacturing technology, specifically the following main technology. 

 (1) rapid prototyping and manufacturing (RPM). cnc milling machine

 (2) the surface forming tooling.  It refers to the use of spray, chemical corrosion, electroforming and new method for the formation of the cavity surface and a fine pattern technology. 

  (3) Casting forming tooling.  There are bismuth tin alloy tooling, zinc alloy tooling, resin composite forming technology and silicon rubber mold molding technology. 

 (4) cold extrusion mold technology and ultra-molded shapes.

  (5) multi-point forming technology. 

  (6) KEVRON steel blanking blanking tooling.

   (7) mold blank rapid manufacturing technology. Mainly dry sand Mold Casting, Vacuum Mold Casting, Resin Sand Mold Casting Lost Wax Casting, and other technologies. 

  (8) Other aspects of technology. cnc milling machineSuch as the use of nitrogen gas spring pressure side, discharge, quick die technology, stamping unit technology, and cutting edge technology and solid surfacing edge inserts die casting technology.

The material properties

The material properties

The material properties can be classified into three major headings:

(i) Physical,

(ii) Chemical,

 (iii) Mechanical. Physical properties

   Precision CNC machining parts Density or specific gravity, moisture content, etc., can be classified under  this category. Chemical properties

  Precision CNC machining parts Many chemical properties come under this category. These include acidity or alkalinity, reactivity and corrosion. The most important of these is corrosion which can be explained in layman’s terms as the  resistance of the material to decay while in continuous use in a particular atmosphere.

  Precision CNC machining parts Mechanical properties  Mechanical  properties include the strength properties like tensile, compression, shear,  torsion, impact, fatigue and creep. The tensile strength of a material is obtained by dividing the maximum load, which the specimen bears by the area of cross-section of the pecimen. This is a curve  plotted between the stress along the Y-axis(ordinate) and the strain along the X-axis(abscissa) in a tensile test. A material tends to change or changes its dimensions when it is loaded, depending upon the magnitude of the load. When the load is removed it can be seen that the deformation disappear s. For many materials this occurs up to a certain value of the stress called the elastic limit. This is depicted by the straight line relationship and a small deviation thereafter, in the stress-strain curve.

In the industrial production and other fields

In the industrial production and other fields

Precision CNC machining parts In the industrial production and other fields, people often endangered by such factors as high temperature, corrode, poisonous gas and so forth at work, which have increased labor intensity and even jeopardized the life sometimes. The corresponding problems are solved since the robot arm comes out. The arms can catch, put and carry objects, and its movements are flexible and diversified. It applies to medium and small-scale automated production in which production varieties can be switched. And it is widely used on soft automatic line. The robot arms are generally made by withstand high temperatures, resist corrosion of materials to adapt to the harsh environment. So they reduced the labor intensity of the workers significantly and raised work efficiency. The robot arm is an important component of industrial robot, and it can be called industrial robots on many occasions. Industrial robot is set machinery, electronics, control, computers, sensors, artificial intelligence and other advanced technologies in the integration of multidisciplinary important modern manufacturing equipment. Widely using industrial robots, not only can improve product quality and production, but also is of great significance for physical security protection, improvement of the environment for labor, reducing labor intensity, improvement of labor productivity, raw material consumption savings and lowering production costs.

 Precision CNC machining parts There are such mechanical components as ball footbridge, slides, air control mechanical hand and so on in the design. A programmable controller, a programming device, stepping motors, stepping motors drives, direct current motors, sensors, switch power supply, an electromagnetism valve and control desk are used in electrical connection.

 Robot is the automated production of a kind used in the process of crawling and moving piece features automatic device, which is mechanized and automated production process developed a new type of device. In recent years, as electronic technology, especially computer extensive use of robot development and production of hightech fields has become a rapidly developed a new technology, which further promoted the development of robot, allowing robot to better achieved with the combination of mechanization and automation. Robot can replace humans completed the risk of duplication of boring work, to reduce human labor intensity and improve labor productivity. Manipulator has been applied more and more widely, in the machinery industry, it can be used for parts assembly, work piece handling, loading and unloading, particularly in the automation of CNC machine tools, modular machine tools

 Precision CNC machining parts more commonly used. At present, the robot has developed into a FMS flexible manufacturing systems and flexible manufacturing cell in an important component of the FMC. The machine tool equipment and machinery in hand together constitute a flexible manufacturing system or a flexible manufacturing cell, it was adapted to small and medium volume production, you can save a huge amount of the work piece conveyor device, compact, and adaptable. When the work piece changes, flexible production system is very easy to change will help enterprises to continuously update the marketable variety, improve product quality, and better adapt to market competition. At present, China's industrial robot technology and its engineering application level and comparable to foreign countries there is a certain distance, application and industrialization of the size of the low level of robot research and development of a direct impact on raising the level of automation in China, from the economy, technical considerations are very necessary. Therefore, the study of mechanical hand design is very meaningful.