Multifunctional knife rest of optical grating notching knife in elastic withstanding pin type

Abstract

A knife frame of multifunctional grating ruling knife with elastic centre consists of main knife frame, sub- knife frame, clamp block, frame for lifting knife, diamond ruling knife, spherical centre, V formed shaft sleeve for fastening, rotatable support frame and sliding balance weight. The knife frame is easy to be adjusted and it can be used to rule grating with planar surface and grating with concave surface.

Description

1. Technical field [0001] The invention belongs to an elastic thimble-type multifunctional grating marking tool holder used in the grating development and marking process involved in the spectrum technology field. 2. Technical background [0002] In spectroscopy technology, grating is one of the important core components of light dispersion. The number of engraved lines per millimeter varies from several hundred to several thousand. Generally, the diffraction grating in the visible light band is 600 lines / mm to 1200 lines / mm. In the process of scribing diffraction gratings, the tool holder of the diamond knife plays a very critical role, and its structure directly affects the quality of scribing plane diffraction gratings. It is understood that most of the tool holders used to scribe plane diffraction gratings in the past are cross elastic hinge structures, and domestic units that develop and scribe plane diffraction gratings generally use tool holders with this structure....

AI Technical Summary

Problems solved by technology

[0004] The main problem of this kind of cross elastic hinge structure tool holder is: there are certain limitations in use, it can only be used to carve flat gratings, it cannot be used to carve concave gratings, and it is very difficult to adjust

Because the allowable deformation of the cross elastic hinge is 3 to 6 μm, if the deformation is too large, the diamond knife will vibrate during marking, resulting in a deviation between the direction of the diamond blade and the direction of movement of the diamond, causing the groove surface of the grating to be rough. Diffraction efficiency is reduced, so the tool holder with this structure is only suitable for marking gratings on planar blanks with planar errors less than 5 μm

For scribing concave gratings, the tool holder with this structure is not suitable, because the height of the spherical center of the concave blank is generally greater than 5 μm

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