The basic requirements for clamping device

The basic requirements for clamping device

   Precision CNC machining parts Without damaging the work piece positioning accuracy and quality assurance process under the premise of clamping devices should be enabled to:   

  1. The size of the appropriate clamping force. It is necessary to ensure that the work piece in the whole process of its stable position vibration small but also so that the work piece does not produce excessive clamping deformation.   

  2. Technology is good. Precision CNC machining parts The complexity of the clamping device should be suited to the production of the Program to ensure production efficiency its structure should be kept simple easy to manufacture and maintenance. 

    3. Good use. The operation of clamping device should be convenient safe and labor-saving.

 Third the basic Clamp

   The original force into a clamping force through the clamping body to achieve.Among the many institutions in the clamping wedge oblique spiral and by their eccentric combination of the most common application of clamping.  

  (A) Wedge Clamp   

  Wedge used as components or transmission of the clamping device clamping body known as the Wedge Clamp.    

  Precision CNC machining parts Wedge clamping directly the oblique wedge of the self-locking conditions are:Wedge angle smaller than the work piece Wedge Wedge and folders between the concrete and the friction angle.

  Namely: a f1+f2  

   In order to ensure a reliable self-locking manual clamping generally take a =6 °~ 8 °. Using pneumatic or hydraulic device drivers do not need the self-locking oblique wedge it is desirable to a =15 ° ~35 °. 

    Wedge clamp is simple in structure than by large self-locking features such as performance it is widely available.

On the application of precision milling technology in the processing center

On the application of precision milling technology in the processing center

Precision CNC machining parts  machinery manufacturing industry plays a very important position in the national economy as a whole, including metal cutting, basic and reliable precision machining means during the process of NC programming, tool selection and cutting the amount of very important, it is not only a huge effect on the quality of the parts to be processed, and can even determine the machine the efficacy of play and production safety is carried out smoothly in the preparation of the processing procedures, tool and cutting, the preparation of high-quality processing program premise.

Precision CNC machining parts  Machinery manufacturing industry plays a very important position in the national economy as a whole, precision metal cutting, basic and reliable means of processing, mechanical, electrical, electronic and other modern industrial sector plays an important role. Tools design, manufacture and use since ancient times is highly valued, here we are talking about tools, not only refers to the machine tool for machining, we are more concerned with the cutting tool. tool to promote the development of metal cutting technology. an extremely active and very critical factor, it can be said machining technology development, innovation, history is the history of tool development.

Precision CNC machining parts  introduced in 2008, the Little Giant company produced two milling machining center, but has not been able to truly part and universal CNC turning and milling machining center milling functions. Tool selection, machining path planning, cutting the amount of set programmers just set the parameters, you can automatically generate the NC program and transferred to the CNC machine tools to complete the processing, CNC machining, tool selection and cutting to determine the state of human-computer interaction, which is common machining stark contrast, it also requires the programmer must master the basic principles of tool selection and cutting to fully consider the characteristics of CNC machining, programming, study and master the CNC milling machining center, milling functions for complex shape, and accuracy require high precision machining of rotary part, to upgrade my unit of CNC precision machining capabilities, with a very important practical significance.

      

The new concept of cutting processing

The new concept of cutting processing

The nowadays cutting tool company cannot only be again the manufacture and the sales cutting tool, in order to succeed, Precision CNC machining parts  they must be consistent with the globalization manufacture tendency maintenance, through enhances the efficiency, cooperates with the customer reduces the cost. Approaches the instantaneous global competition after this after NAFTA, the WTO time, the world company is making quickly to the same feeling, is lighter, a cheaper response. In other words, they make the product and the components contain can in high speed under revolve, as a result of the cost pressure, best, is lighter moreover must make cheaply. Obtains these goals a best way is through develops and applies the new material, but these is new and the improvement material usually all with difficulty processes. In in this kind of commercial power and the technical difficulty combination is especially prominent in the automobile and the aviation industry, and has become has the experience the cutting tool company to research and develop the department the most important driving influence.

For example, takes the modular cast iron to say that, it has become the engine part and other automobiles, the agriculture the material which see day by day with the equipment and in the machine tool industry components. Precision CNC machining parts This kind of alloy provides the low production cost and the good machine capability combination. They are cheaper than the steel products, but has a higher intensity and toughness compared to the cast iron. But at the same time the modular cast iron is extremely wear-resisting, has fast breaks by rubbing the cutting tool material the tendency. In this wear resistant very great degree bead luminous body content influence. Some known modular cast iron bead luminous body content higher, its resistance to wear better, moreover its machinability is worse. Moreover, the modular cast iron porosity causes off and on to cut, this even more reduces the life.

May estimate that, PrecisionCNC machining parts the high degree of hardness and the high wear-resisting cutting material quality must consider the modular cast iron the high resistance to wear. And the material quality contains extremely hard TiC in fact (carbonized titanium) or TiCN (carbon titanium nitrides) thick coating when cutting speed each minute 300 meters processes the modular cast iron to prove usually is effective. But along with cutting speed increase, scrap/The cutting tool junction

 plane temperature also is increasing. When has such situation, the TiC coating favors in has the chemical reaction with the iron and softens, more pressures function in anti- crescent moon hollow attrition coating. Under these conditions, hoped has one chemical stability better coating, like Al2O3 (although under low speed was inferior to TiC hard or is wear-resisting).

  

The widespread application of advanced manufacturing technology

The widespread application of advanced manufacturing technology,  

Precision CNC machining parts Advanced manufacturing technology is relatively conventional manufacturing techniques in the application scope of a major difference is that traditional manufacturing techniques are usually only refers to a variety of raw materials into finished products processing technology, and advanced manufacturing technology, although still a large number of application processing and assembly processes, However, because of its composition including the design technology, automation 

technology, systems management technology, which will be applied to its consolidated the whole process of manufacturing, covering product design, production preparation, processing and assembly, sale use, maintenance services and even the recycling of the the whole process. 

  The dynamic characteristics of advanced manufacturing technol

 Precision CNC machining parts  As advanced manufacturing technology itself is the target for a certain application, absorbing a variety of high-tech gradually formed, the continuous development of new technologies, and therefore its meaning is not absolute and immutable. Is reflected in the different periods, advanced manufacturing technology has its own characteristics; also reflected in the different countries and regions, advanced manufacturing technology has its own focus on the development objectives and content, by focusing on the development of content in order to achieve the national  and regional manufacturing technology by leaps and bounds. 

  The integration of advanced manufacturing technology    

Precision CNC machining parts Traditional manufacturing technology, professional single independent and distinct boundaries between them; advanced manufacturing technology, professional and interdisciplinary due to the continuous infiltration, cross, integration, boundaries gradually fade or even disappear, technology tends to systematic, integrated, has developed into a set of machinery, electronics, information, materials and management techniques for the integration of a new cross-disciplinary. So you can call it a "manufacturing engineering."

   

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 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.

Eccentric Clamp

Eccentric Clamp  

   Precision CNC machining parts With eccentric pieces, directly or indirectly, the work piece clamping body, known as the eccentric clamping body. There are two types of eccentric pieces, that is, and the curve of eccentricity eccentric circle, which, due to a round eccentric structure is simple and easy to manufacture and is widely used.  

    Precision CNC machining parts Eccentric clamping processing is easy to operate, rapid clamp, the disadvantage of clamping force and clamping trip are small. Not generally used in cutting force, Precision CNC machiningparts vibration small there is no centrifugal force of the impact of the processing.   

   1. Round the working principle of eccentric  

   2. Eccentric clamping round trip and paragraph   

   3. Eccentric self-locking condition of  a≤ j1+ j2                      

  Was derived: f1 ≥2e / D     

When f =0.1 hours, e / D≥ 20, when f =0.15 pm, e / D ≥14