Ultra-precise cutting knife selection method

A turning tool, ultra-precision technology, applied in special data processing applications, instruments, electrical digital data processing and other directions, can solve the problems of reducing the machining accuracy of machine tools, damage to the shape of the workpiece, damage to the diamond tool, etc., to avoid the effect of machining interference

Active Publication Date: 2008-05-28
TIANJIN UNIV
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Problems solved by technology

[0003] In mechanical processing, the processing interference problem will lead to the destruction of the shape of th

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  • Ultra-precise cutting knife selection method
  • Ultra-precise cutting knife selection method
  • Ultra-precise cutting knife selection method

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Embodiment Construction

[0028] Single point diamond tool cutting surface such as figure 1 As shown, the parameter on the cutting surface is the radius of the tool nose arc r 0 , tool nose arc radian x 0 . The machined surface topography of diamond ultra-precision turning itself contains features defined by these two parameters. The radian of the tool nose is limited by the curvature characteristics of the processing surface; the radius of the tool nose arc is limited by the characteristics of the concave area of ​​the processing surface. If the radius of the concave area is too small relative to the radius of the arc, there is a possibility of machining interference.

[0029] For the processing model of any free-form surface z=f(x, y), it is very difficult to directly find the curvature of the surface and the characteristics of the concave region in three-dimensional space. Here, it is proposed to use the rotating section analysis method for the processing model to carry out the above two Quantita...

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Abstract

The invention belongs to the technical field of ultraprecision machining and complex part manufacturing and relates to a method for selecting ultraprecision turning tools. The method comprises the following procedures: a plurality of sectional curves for a machined surface are selected with rotating section analysis or according to the geometry of the machined surface; the solution is found, and with the sector of sectional curve method, the minimum blade arc radian value for machining each curve is solved; the depressed regions of each curve are searched and the solution for radii of the depressed regions is conducted with the method of circle fitting to obtain the maximum blade arc radius value of each curve; the minimum blade arc radian value and the maximum blade arc radius value of each sectional curve are compared, and the blade arc radian of a turning tool to be selected is confirmed according to the largest minimum blade arc radian value and the blade arc radius of the turning tool to be selected is confirmed according to the lowest maximum blade arc radius value; the turning tool is selected. The turning tool selecting method provided by the invention can reduce or avoid the problem of machining interference brought by improper turning tool selection.

Description

technical field [0001] The invention belongs to the technical field of ultra-precision and micro-machining, and relates to a method for selecting ultra-precision machining tools. Background technique [0002] The ultra-precision and micro-machining technologies developed in recent years have extremely strong radiation effects, and are widely used in the manufacture of ultra-precision and tiny key devices in various fields, such as biomedical, aerospace, national defense, optics, communications, microelectronics and other fields. The development of each of its application technologies will bring a new leap in the application field to a certain extent, thereby promoting the upgrading of products. In view of these reasons, foreign countries have adopted a strict technical blockade against our country, and the core technology is completely kept secret. [0003] In machining, the machining interference problem will lead to the destruction of the shape of the workpiece, and even...

Claims

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Application Information

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IPC IPC(8): G06F17/50G05B19/18
Inventor 房丰洲张效栋
Owner TIANJIN UNIV
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