Diamond turning method and device for Archimedean spiral type Fresnel lens

An Archimedes spiral and Fresnel lens technology, applied in metal processing equipment, turning equipment, turning equipment, etc., can solve the problems of low precision, shortened tool life, long processing cycle, etc., to improve processing accuracy , to solve the fragile effect

Inactive Publication Date: 2007-01-24
TSINGHUA UNIV +1
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Problems solved by technology

[0004] The object of the present invention is to solve the problems of shortened tool life, long processing cycle and low precision caused by intermittent ma

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  • Diamond turning method and device for Archimedean spiral type Fresnel lens
  • Diamond turning method and device for Archimedean spiral type Fresnel lens
  • Diamond turning method and device for Archimedean spiral type Fresnel lens

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Embodiment Construction

[0025] The present invention is an Archimedes spiral Fresnel lens proposed to solve the problems of shortened tool life, long processing cycle and low precision caused by intermittent machining of the conventional large-scale Fresnel lens diamond turning. Diamond turning processing method and device. exist image 3 In the schematic diagram of the diamond turning processing device for the Archimedes spiral Fresnel lens shown, the X-axis ram 2 moves along the guide rail fixed on the bed 5 to realize the X-axis movement, and the Z-axis ram 3 moves along the fixed The guide rail movement on the X-axis ram 2 realizes the Z-axis movement. The arc direct drive motor 4 is installed on the Z-axis ram 3 to realize the B-axis movement. The precision linear motor 1 is fixed on the moving part of the arc direct drive motor 4. On the sub, the diamond tool 6 is installed on the precision linear motor 1 and moves along the W axis output by the precision linear motor 1, the workpiece 7 is ins...

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Abstract

The present invention belongs to the field of precise machining technology, and is especially diamond turning method and apparatus for Archimedean spiral type Fresnel lens. The present invention has X axis ram on guide track on bed for X axis motion, Z axis ram on guide track on the X axis ram for Z axis motion, arced direct driving motor on Z axis ram for B axis motion, precise linear motor on the mover of the arced direct driving motor, and diamond cutter on the precise linear motor for W axis motion. During machining, the diamond cutter has the motion path as the synthesis of the X axis motion, the B axis motion and the W axis motion, and the work piece on the bench rotates around C axis, so that the diamond cutter moves along Archimedean spiral in the surface of the work piece. The present invention has continuous cutting, less damage of the cutter, short machining period and raised machining precision of Fresnel lens.

Description

technical field [0001] The invention belongs to the technical field of precision machining. In particular, it relates to a diamond turning method and device for an Archimedes spiral Fresnel lens. Background technique [0002] In the 1920s, the famous physicist Fresnel proposed that the imaging characteristics of a continuous optical surface mainly depend on the curvature of the surface, while the axial thickness is a secondary factor. Therefore, the thickness between the two surfaces of the lens can be reduced by dividing the ordinary convex lens into several split bodies, removing the redundant parts in the middle split body, and then rearranging the remaining parts of the splits on a common base plane perpendicular to the optical axis On the other hand, the optical element can still maintain the focusing characteristics, thus forming a Fresnel lens. The common form of Fresnel lens is concentric ring fine alveolar groove type, such as figure 1 shown. [0003] When using...

Claims

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Application Information

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IPC IPC(8): B23B5/46
Inventor 叶佩青赵彤张辉汪劲松李维谦
Owner TSINGHUA UNIV
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