Open double-reading head circular grating system quick installation and adjustment mechanism

Abstract

The invention discloses an open double-reading head circular grating system quick installation and adjustment mechanism. The open double-reading head circular grating system quick installation and adjustment mechanism comprises a base plate, a ring flange and a circular grating, reading head installation seats are diametrically arranged on the two sides of the circular grating, the reading head installation seats are fixedly connected with a positive reading head and a reverse reading head correspondingly, cushion blocks are arranged at the bottoms of the reading head installation seats, and fixedly connected with the base plate; the reading head installation seats are provided with a plurality of first step groove holes in the Z direction and the Y direction, the first step groove holes are used for adjusting the distance of the reading heads relative to the circular grating in the Z direction and the Y direction, threaded holes are further formed in the reading head installation seats, and the pitching angle of the reading head mounting seats to the X direction is adjusted through fastening bolts; and the cushion blocks are provided with second step groove holes in the X direction, and the second step groove holes are used for adjusting the distance of the reading heads relative to the circular grating in the X direction and the torsional swinging angle of the reading head installation seats relative to the Z direction. According to the open double-reading head circular grating system quick installation and adjustment mechanism, through the quick installation and adjustment mechanism, the multi-degree of freedom adjustment of the reading heads is realized, the volume is small, the structure is simple, installation and adjustment are convenient, and the circular grating and the diametrical double-reading head can be rapidly installed and adjusted.

Description

technical field [0001] The invention belongs to the technical field of installation and adjustment of precision detection components, and in particular relates to a rapid installation and adjustment mechanism for an open-type double-reading head circular grating system. Background technique [0002] Most of the existing rotary motion mechanisms are equipped with a circular grating as an angle detection element to improve the accuracy of the movement. Among them, the circular grating produced by the British RENISHAW company is more famous, especially the circular grating system with double reading heads. It uses dual readheads for radial readings, which eliminate the effects of mounting eccentricity errors and repeatable higher order odd harmonic errors. However, for the specific circular grating and reading head, RENISHAW company does not provide the corresponding installation and adjustment mechanism, which needs to be designed by the user according to the application. [...

AI Technical Summary

Problems solved by technology

[0003] Due to the high requirements for the installation position of the reading head and the circular grating, the existing installation and adjustment mechanism of the circular grating and the reading head is bulky and cannot realize the adjustment of multiple degrees of freedom directions. The adjustment process is complicated and the precision is low. It is suitable for equipment with small installation and adjustment space, and the existing installation and adjustment mechanism cannot observe the state of the reading head and the circular grating. While affecting work efficiency, collisions may occur during installation and damage the reading head

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