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

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.

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.

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

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

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.

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.