precision metal turned parts

- Dec 13, 2018 -

Precision metal turned parts

Precision machining technology is one of the most important development directions of modern machinery manufacturing. It plays a vital role in improving the performance, quality and development of high-tech products, and has become a key technology for success in international competition.

    Precision machining refers to submicron (size error 0.3-0.03?m, surface roughness Ra 0.03~0.005?m) and nanometer scale (accuracy error is 0.03?m, surface roughness is less than Ra0.005?m) Precision machining. Process to achieve these processes

precision metal turned parts.jpg

precision metal turned parts

precision metal turned parts.jpg

precision metal turned parts

Method and technical measures are called finishing techniques. Coupled with measurement technology, environmental protection and materials, people call this technology super-fine engineering.

Precision machining mainly includes three areas:

Precision machining, such as ultra-precision cutting of diamond tools, can be used to machine a variety of mirrors. It has successfully solved the processing of large parabolic mirrors for laser nuclear fusion systems and astronomical telescopes.

precision metal turned parts.jpg

precision metal turned parts

precision metal turned parts.jpgprecision metal turned parts

Precision grinding and grinding processes such as coating surface processing of high density hard disks and processing of large scale integrated circuit substrates.

1. Precision special processing, such as the pattern on a large-scale integrated circuit chip, is processed by electron beam and ion beam etching, and the line width can reach 0.1 μm. If processed by scanning tunneling electron microscopy (STM), the line width can reach 2~5nm.

2. Working principle

In recent years, in the traditional processing methods, ultra-precision cutting of diamond tools, ultra-precision grinding of diamond micro-powder wheels, precision high-speed cutting, precision belt grinding, etc. have occupied an important position; in non-traditional processing, electron beams and ions have appeared. Beam, laser beam

Contour processing, microwave processing, ultrasonic processing, etching, electric sparking, and electrochemical processing, especially in composite processing, such as magnetic grinding, magnetic fluid polishing, electrolytic grinding, ultrasonic honing, etc. Innovation.

3. Equipment

 Precision parts processing has the following requirements for processing equipment used in precision and ultra-precision machining. 

   (1) High precision. Including high static precision and dynamic precision, the main performance indicators are geometric accuracy, positioning accuracy and repeat positioning accuracy, resolution, etc., such as spindle rotation accuracy, guide rail motion accuracy, indexing accuracy, etc.;

   (2) High stiffness. Including high static stiffness and dynamic stiffness, in addition to its own stiffness, attention should also be paid to contact stiffness and the rigidity of the process system consisting of workpieces, machine tools, tools and fixtures. 

   (3) High stability. After being transported and stored, the equipment should be used in the specified working environment and should be able to maintain accuracy, anti-interference and stable operation for a long time. Equipment should have good wear resistance, vibration resistance and so on. 

   (4) High automation. In order to ensure the quality of processing and reduce the influence of human factors, the processing equipment is mostly automated by numerical control system. 

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