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Method for machining cylindrical mirror

A processing method and technology of cylindrical mirrors, applied in metal processing equipment, manufacturing tools, optical surface grinders, etc., can solve the problems of low processing precision of cylindrical mirrors, achieve good application prospects, reduce processing scrap rate, and improve surface accuracy Effect

Active Publication Date: 2015-01-21
LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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Problems solved by technology

[0003] The purpose of the present invention is to provide a processing method for cylindrical mirrors to solve the problem of relatively low processing accuracy of existing cylindrical mirrors

Method used

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  • Method for machining cylindrical mirror
  • Method for machining cylindrical mirror
  • Method for machining cylindrical mirror

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Embodiment 1

[0043] The shape of the cylindrical mirror to be processed in this embodiment is as follows figure 1 , 2 As shown, the process requirements are:

[0044] Dimensions, length 237.7, width

[0045] Cylindrical curvature radius, concave surface R-107.5, convex surface R+107.5;

[0046] Surface accuracy Rt≤0.4μm, Ra≤0.04μm;

[0047] Center deviation χ≤1.2';

[0048] Center thickness dimension 8±0.1;

[0049] Surface blemish grade B=Ⅴ.

[0050] The processing method of the cylindrical mirror of the present embodiment comprises the following steps:

[0051] Process the first side R+107.5:

[0052] 1) Take a quadrangular prism blank, which is 237.7 in length and 237.7 in width Thickness 22, milling a long side adjacent to the cylindrical surface to be processed, controlling the parallelism of this surface to be 0.002, and using this surface as the blank reference surface;

[0053] Get the used frock of this embodiment, described frock is as image 3 , 4 As shown, includi...

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Abstract

The invention discloses a method for machining a cylindrical mirror. The method for machining the cylindrical mirror comprise the steps that a blank is obtained, and the reference surface of the blank is milled; the blank adheres to a tool with wax; the tool with the blank is arranged on a workpiece shaft of a milling device, and the reference surface of the blank is measured with a dial indicator and is clamped; programmed milling is conducted on the cylindrical surface to be machined; the surface type data of the machined cylindrical surface are measured; the surface type data are compared, if the Rt value is larger than 1 micron, correction milling is conducted, and if the Rt value is smaller than 1 micron, polishing is conducted; if the Rt value and the Ra value of the machined cylindrical surface of the polished workpiece meet expected requirements, the workpiece is detached from the tool, cleaning is conducted, and then the cylindrical mirror is obtained. By the adoption of the method for machining the cylindrical mirror, the machining efficiency and the machining precision of the cylindrical mirror are improved, the high-precision cylindrical mirror can be machined, the machining difficulty and the detection difficulty are effectively lowered, generation of waste is avoided, the machining rejection rate is reduced, the technologies are simple, operation is convenient, and good application prospect is achieved.

Description

technical field [0001] The invention belongs to the technical field of optical manufacturing, and in particular relates to a processing method of a cylindrical mirror. Background technique [0002] Cylindrical lens is a non-axisymmetric special aspheric lens, which can provide the best optical power in one dimension, and is equal to a plane in the other dimension orthogonal to it. This feature makes it important in some special fields. With the development of science, the application fields of cylindrical mirrors are constantly expanding, and their precision requirements are getting higher and higher. However, since the cylindrical mirror has no axis of rotational symmetry, its processing and testing, especially high-precision processing and testing, are difficult. Contents of the invention [0003] The object of the present invention is to provide a method for processing a cylindrical mirror, which solves the problem of relatively low processing precision of the existing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B13/00B24B49/02
CPCB24B13/00B24B13/005B24B49/02
Inventor 袁兆峰孙红晓刘伏涛
Owner LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC
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