A precision machining method for a small-diameter rotating axisymmetric optical surface element

A technology of precision machining and rotating shafts, applied in stone processing equipment, stone processing tools, metal processing equipment, etc., can solve the problems of low processing accuracy and processing efficiency, limited processing materials, and large cumulative errors, and achieve improved processing accuracy and efficiency. Processing efficiency, high processing efficiency, and the effect of reducing accumulated errors

Active Publication Date: 2019-03-05
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of large cumulative error, low machining accuracy and efficiency, and limited machining materials in the above-mentioned prior art, the present invention aims to provide a precision machining method for small-diameter rotating axisymmetric optical curved surface elements

Method used

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  • A precision machining method for a small-diameter rotating axisymmetric optical surface element
  • A precision machining method for a small-diameter rotating axisymmetric optical surface element
  • A precision machining method for a small-diameter rotating axisymmetric optical surface element

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Embodiment 1

[0038] See attached figure 1 , 2 , 3, 5, the material of the workpiece to be processed is FB05 cemented carbide produced by Daijie Industrial Co., Ltd., the workpiece blank is a cylinder (size is Φ20mm×10mm), the surface of the workpiece to be processed is located at the end surface of the cylinder, and its shape is Axisymmetric aspherical concave surface, the aspheric diameter is 10mm. The processing of the above-mentioned workpieces is completed on a precision machining machine tool for small-diameter rotating axisymmetric optical curved surface elements, and the following procedures are followed:

[0039] Process 1: Fix the workpiece holder 3 with the workpiece 4 to be processed on the right end of the workpiece spindle 1 through the vacuum chuck 2; rotate the rotary table 13 to make the milling spindle 6 of the oblique-axis micro-milling device 7 The axis is inclined to the axis of workpiece spindle 1 by ∠α 1 The angle intersects, ∠α 1 The value of the angle is 45°; t...

Embodiment 2

[0049] See attached figure 1 , 3 , 4, 5, the material of the workpiece to be processed is brass for commercially available H62 molds, the workpiece blank is a cylinder (size Φ20mm×10mm), the surface of the workpiece to be processed is located at the end surface of the cylinder, and its shape is an axisymmetric concave spherical surface , the diameter of the concave spherical surface is 10mm. The processing of the above-mentioned workpieces is completed on a precision machining machine tool for small-diameter rotating axisymmetric optical curved surface elements, and the following procedures are followed:

[0050] Process 1: Fix the workpiece holder 3 with the workpiece 4 to be processed on the right end of the workpiece spindle 1 through the vacuum chuck 2; rotate the rotary table 13 so that the center line of the single-point diamond turning tool 12 is aligned with the workpiece The axes of the main shaft 1 are coincident; the tool setting of the workpiece 4 and the single...

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Abstract

The invention relates to a precision machining method for small-aperture rotating shaft symmetric optical cambered elements. The method is based on a precision machine tool for small-aperture rotating shaft symmetric optical cambered elements, and the small-aperture rotating shaft symmetric optical cambered elements made of different workpiece materials are machined by different processes. An inclined shaft superfine milling device, an inclined shaft electrorheological polishing device and a single-point diamond turning device are integrated on a single machine tool, and different machining modes can be switched over rapidly; by a detecting device, on-position measurement and shape error correction on workpieces can be implemented, compensated machining of the workpieces can be realized, and the controllability of a machining path is good; the workpieces are clamped at a time in a machining process, accumulated errors are reduced, assisted working hours are shortened, and the machining precision is improved; the method is suitable for machining and detecting the workpieces with different surface shapes, and interference between a knife and the workpieces can be avoided effectively; the precision machining method is suitable for machining the workpieces made of various materials; and the machining efficiency of surface shapes of workpieces is high.

Description

technical field [0001] The invention relates to a processing method for an optical curved surface element, in particular to a precision processing method for a small-diameter rotational axisymmetric optical curved surface element. Background technique [0002] With the rapid development of optoelectronic information, automotive, biological, medical, security, military and aerospace industries, small-diameter rotating axisymmetric optical curved elements are increasingly widely used in various high-quality imaging systems, and the demand has increased sharply. In order to meet the requirements of high-precision imaging in the above-mentioned fields, the surface shape of the small-aperture rotating axisymmetric optical surface element is required to achieve sub-micron level shape accuracy, and its surface is required to achieve nano-level surface roughness and minimal sub-surface damage. [0003] At present, there are two main methods for precision manufacturing of small-diame...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28D1/18B28D7/00B28D7/04B24B29/04B24B41/06
CPCB24B29/04B24B41/06B28D1/186B28D7/00B28D7/005B28D7/04
Inventor 唐昆孔明慧谭可成
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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