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Ultra-precise turning method with diamond knife tool hook angle compensation

A diamond tool and ultra-precision technology, applied in the fields of ultra-precision machining and complex parts manufacturing, can solve the problems of low fracture toughness, low production efficiency and poor machinability of brittle materials

Active Publication Date: 2008-08-20
TIANJIN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] However, due to the characteristics of high brittleness and low fracture toughness, brittle materials have poor machinability. When the material is subjected to overloaded cutting force, it will fracture and damage, which seriously affects the processing quality of the workpiece.
The processing of brittle materials mainly adopts grinding, grinding, polishing and other processes, and the production efficiency is low

Method used

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  • Ultra-precise turning method with diamond knife tool hook angle compensation
  • Ultra-precise turning method with diamond knife tool hook angle compensation
  • Ultra-precise turning method with diamond knife tool hook angle compensation

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Embodiment Construction

[0023] The tool model considering the rake angle is as follows figure 1 shown. In the figure, 1 is the cutting surface, and 2 is the zero rake angle surface. The radius of the tool nose arc on the cutting surface is r 0 ;Established at the center of the arc of the cutting surface figure 1 In the tool coordinate system o′x′y′z′ shown, the angle between the cutting surface and the negative direction of the z-axis is the rake angle α 0 , the current cutting surface can be regarded as a zero-rake angle surface formed by rotating around the axis parallel to the tool nose and the x-axis. The normal vector of the cutting surface is,

[0024] n → t = ( 0 , cos α 0 , sin α 0 ) - - - ...

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Abstract

The invention belongs to ultra precise machining, complex parts fabrication technique field, relates to a ultra precise turning process with diamond knife tool anterior angle compensating for three axis diamond ultra precise machine tool. The method adapts above tool orthogonal rake compensating to search lathe coordinate of knife for many coordinate on the mould, and generates machining paths according to certain paths to realize the machining for surface model tool orthogonal rake compensating. In the paths generation method, the knife with anterior angle is compensated on the anterior angle to realize tool bit accurate control in case of machining brittleness material and ultra precise turning with high shape accuracy.

Description

technical field [0001] The invention belongs to the technical field of ultra-precision machining and complex part manufacturing, and relates to an ultra-precision turning method. Background technique [0002] At present, brittle materials (such as silicon, BK7 glass, ZnS and ZnSe, etc.) are increasingly used in the application field of ultra-precision products. Whether it is in the micro-optics consumer market such as mobile phone cameras, DVD readout heads, and miniaturized camera lenses, or in new health diagnostic methods such as endoscopes, chip laboratories, and minimally invasive biological information analysis in the biomedical field, brittle material products Both began to form a growing market demand. [0003] However, due to the characteristics of high brittleness and low fracture toughness, brittle materials have poor machinability. When the material is subjected to overloaded cutting force, it will fracture and damage, which seriously affects the processing qual...

Claims

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Application Information

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IPC IPC(8): G05B19/19B23B1/00
Inventor 房丰洲张效栋
Owner TIANJIN UNIV
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