Ultra-precise oblique angle turning method for machining mirror surface of soft and brittle material

A mirror processing and ultra-precision technology, which is applied in the field of precision and ultra-precision cutting, can solve the problems of sub-surface damage, surface roughness, material surface cracking and cracking, etc., to improve the quality of the processed surface, reduce the depth of damage, and improve chip removal and the effect of cooling conditions

Active Publication Date: 2015-11-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the surface layer of the material is easily broken and cracked during the mirror surface processing of the existing soft and brittle materials, and causes serious subsurface damage and surface roughness; Precision Bevel Turning Method

Method used

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  • Ultra-precise oblique angle turning method for machining mirror surface of soft and brittle material
  • Ultra-precise oblique angle turning method for machining mirror surface of soft and brittle material
  • Ultra-precise oblique angle turning method for machining mirror surface of soft and brittle material

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specific Embodiment approach 1

[0019] Specific implementation mode one: combine figure 1 , this embodiment is an ultra-precision bevel turning method for mirror surface processing of soft and brittle materials, which is specifically completed according to the following steps:

[0020] 1. Preliminary preparation: Strictly control the ambient temperature, humidity and cleanliness around the ultra-precision machining machine tool. The temperature is controlled at 23°C ± 0.1°C, the humidity is controlled at 45% ± 5%, and the cleanliness is above 1000 grades;

[0021] 2. Machine tool warm-up: start the ultra-precision machining machine tool, and wait until the performance of the ultra-precision machining machine tool is stable;

[0022] 3. Polishing pretreatment: the polycrystalline ZnS material is subjected to polishing pretreatment, and the polycrystalline ZnS material after polishing pretreatment is obtained;

[0023]4. Installation: Install the pre-polished polycrystalline ZnS material through the high-prec...

specific Embodiment approach 2

[0038] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the radius of the cutting blunt circle of the natural diamond tool I described in step 4 should be less than 30 nm. Others are the same as the first embodiment.

[0039] The cutting edge consistency of the natural diamond cutter I described in this embodiment is better.

specific Embodiment approach 3

[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the radius of the cutting blunt circle of the natural diamond tool II described in step 7 should be less than 30 nm. Others are the same as those in Embodiment 1 or 2.

[0041] The cutting edge consistency of the natural diamond cutter II described in this embodiment is better.

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Abstract

The invention discloses an ultra-precise oblique angle turning method for machining a mirror surface of a soft and brittle material, belongs to precise and ultra-precise cutting methods and particularly relates to a turning method suitable for soft and brittle materials. The ultra-precise oblique angle turning method for machining the mirror surface of the soft and brittle material mainly aims to solve the problems that in the prior art, during machining of the mirror surface of the soft and brittle material, the surface layer of the material is prone to breaking and cracking, and serious surface subdamage and surface roughness are caused. The ultra-precise oblique angle turning method comprises the first step of early-stage preparation, the second step of machine tool preheating, the third step of polishing preprocessing, the fourth step of installation, the fifth step of rough cutting, the sixth step of semi-precise cutting, the seventh step of oblique angle turning, and the eighth step of precise cutting and obtaining the polycrystal ZnS material with the mirror surface. The ultra-precise oblique angle turning method for machining the mirror surface of the soft and brittle material has the advantage that the surface roughness Sa of the machined mirror surface of the soft and brittle material is decreased to 7.5 nm from 18.2 nm. The ultra-precise oblique angle turning method is mainly used for machining the mirror surface of the soft and brittle material.

Description

technical field [0001] The invention belongs to precision and ultra-precision cutting processing methods, in particular to a turning method suitable for soft and brittle materials. Background technique [0002] In recent years, due to the advancement of space technology, the development of cutting-edge defense technologies and the urgent needs of military science, the research on the characteristics of infrared optical materials and the processing of corresponding optical components have attracted the attention of all countries in the world. The material can cause infrared light to undergo refraction, reflection and transmission effects, change its intensity, phase or spectral composition, and even the direction of propagation, so as to achieve the purpose of controlling the transmission law of infrared light beams in it according to preset requirements. Therefore, in the process of rapid development of modern weapons and equipment, infrared optical materials have been more ...

Claims

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Application Information

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IPC IPC(8): B23B1/00
CPCB23B1/00B23B2226/00
Inventor 宗文俊曹志民何春雷孙涛
Owner HARBIN INST OF TECH
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