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Temperature controllable polishing tool

A technology of polishing tools and polishing heads, which is applied in the direction of manufacturing tools, metal processing, metal processing equipment, etc., can solve the problems of demanding processing environment temperature, difficulty in ensuring the convergence efficiency of the processing surface shape, and overcome the uncontrollable temperature , improve the convergence efficiency of surface shape accuracy, and improve the effect of machining surface quality

Inactive Publication Date: 2008-10-22
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has very high requirements on the shape and fluidity of the polishing adhesive layer, so the requirements on the processing environment temperature are very strict, and it is difficult to ensure the convergence efficiency of the processing surface shape accuracy

Method used

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Embodiment Construction

[0013] The invention provides a temperature-controllable polishing tool. figure 1 Schematic diagram of the structure of the polishing tool shown. The disc-shaped heat transfer substrate 4 and the polishing head base 1 are connected by threads, and the insulating layer 2 is tiled on the lower surface of the polishing head base 1 and the inner surface of the heat transfer substrate 4 respectively to form an internal space. The temperature control relay 5 and the heater 3 are installed therebetween. The heater 3 can be a resistance wire or an electrothermal ceramic. If it is a resistance wire, it is evenly arranged on the insulating layer 2 on the inner surface of the disc-shaped heat transfer substrate 4 (Such as figure 2 shown). The miniature temperature control relay 5 is fixed on the insulating layer 2 laid on the inner surface of the heat transfer substrate 4 by means of screws, its input end is welded and connected with the positive pole of the power supply, and the outp...

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Abstract

A temp controllable polishing tool with circular plate shape features that the miniature temp controlling relay and heater are arranged in the insulating layer between heat-transfer base plate and the substrate of polishing head, and the polishing layer is adhered on the external surface of heat-transfer base plate. The surface shape of said polishing layer is same as the surface to be polished.

Description

technical field [0001] The invention belongs to the field of precision curved surface processing tools. In particular, it relates to a temperature-controllable polishing tool. Background technique [0002] Most of the traditional precision optical components rely on optical spherical surfaces that are easier to obtain in the process. However, considering the irreplaceable advantages of aspheric surfaces in correcting aberrations, often one aspheric mirror can replace the role of multiple spherical mirrors. Therefore, the quantity and weight of the entire optical system unit are greatly reduced. Therefore, the primary mirrors in modern large astronomical telescopes and reconnaissance cameras are all made of aspheric elements. In the initial stage, only aspheric elements with small asphericity can be used, that is, aspheric surfaces that are very close to spherical surfaces. Therefore, it was once considered rare to achieve the high-level requirements pursued by optical theo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D17/00B24D99/00
Inventor 程灏波冯之敬壬英伟王飞
Owner TSINGHUA UNIV