Accurate regulation and adhesion device for indication gratings

Abstract

The invention provides an accurate regulation and adhesion device for indication gratings, and belongs to the field of manufacturing of grating rulers. The problem that widths of moire fringes cannot be controlled accurately in the prior art is solved. The accurate regulation and adhesion device for the indication gratings comprises a supporting platform, an indication grating regulation module, the indication gratings, a slide rack, a main grating, an illuminating light source, a coaxial optical lens, a camera, a computer and an automatic dispenser, wherein the main grating is fixed on the supporting platform through the slide rack; the indication gratings are arranged above the main grating and is fixed with the indication grating regulation module; the computer controls the camera to take photos of the main grating and the indication gratings through the coaxial optical lens; the illuminating light source has an illumination function; the positions of the indication gratings relative to the main grating are adjusted through the indication grating regulation module; and the computer controls the automatic dispenser to perform adhesion. By the accurate regulation and adhesion device, an included angle between two gratings can be regulated accurately, data are visual and time-based, and the reference performance of the data is high. By the automatic adhesion function of the accurate regulation and adhesion device, unnecessary errors generated in an artificial adhesion process can be avoided.

Description

technical field [0001] The invention belongs to the field of grating ruler manufacturing, and in particular relates to a precise adjustment and bonding device for indicating gratings. Background technique [0002] With the continuous improvement of positioning accuracy requirements in the field of machine tools, grating rulers have become an important tool for precise position measurement. The grating scale is composed of two parts: the main grating and the grating reading head. The grating reading head is further composed of a light source, a converging lens, an indicating grating, a photoelectric element, and an adjustment mechanism. The basic principle of the grating scale is that the main grating and the index grating on the grating reading head form moiré fringes. When the line pattern on the index grating and the line pattern on the main grating form a small angle θ, and the index grating and the main grating When the surfaces are relatively parallel, under the illumi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a precise adjustment and bonding device for indicating gratings, which solves the problem of inability to accurately control the width of moiré fringes in the prior art

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