Device and method for bonding illumination mechanism of grating scale

Abstract

The invention provides a device and method for bonding an illumination mechanism of a grating scale and belongs to the technical field of grating scale measurement. The device comprises a manipulator, a scale grating mechanism, an indicative grating carriage, a carriage floating support mechanism, a spring lifting pin mechanism, an oscilloscope and a glue dispensing device, wherein the scale grating mechanism is mounted above the manipulator; the carriage floating support mechanism is mounted on the side surface of the manipulator; the spring lifting pin mechanism is mounted on the other side surface of the manipulator and arranged on the opposite side of the carriage floating support mechanism; the indicative grating carriage is mounted on the carriage floating support mechanism and effectively contacted with the scale grating mechanism; the illumination mechanism is mounted on the indicative grating carriage and tightly pressed on the indicative grating carriage by the spring lifting pin mechanism; the oscilloscope and the glue dispensing device are located beside the manipulator. According to the device and the method, rigidity of the scale grating is improved, deformation of a scale grating when the scale grating is contacted with the indicative grating carriage is reduced, and reliability of the indicative grating carriage and the scale grating as well as convenience in operation is improved.

Description

technical field [0001] The invention belongs to the technical field of grating measurement, and in particular relates to a bonding device and a bonding method for an illumination mechanism of a grating ruler. Background technique [0002] In the field of precision measurement and displacement control, the grating is used as the reference, because of its simple structure and high precision, it is recognized internationally as the most practical, economical and reliable technical measure to obtain high precision. The grating scale is composed of a scale grating and an indicating grating, wherein the scale grating is bonded to the scale shell, and the indicating grating is bonded to the indicating grating carriage of the reading head. The index grating and the scale grating generate relative motion, and the relative displacement is calculated by using the generated moiré fringes. [0003] When installing the structure of the grating ruler, before the lighting mechanism is bond...

AI Technical Summary

Problems solved by technology

The prior art patent "A Lighting Installation Device for Grating Rulers (Application No.: 201410380365.1)" provides a feasible technical solution, which has been applied to actual production, but there are technical deficiencies and technical defects

Problems in the prior art: 1. The scale grating supported by two points produces a large deformation, especially when the guide grating carriage moves to the middle position of the two supported points, the scale grating deforms very large; 2. An elastic mechanical support indicates that the grating is slippery. The frame makes it contact with the scale grating, indicating that the bearing on the grating carriage is in poor contact with the scale grating, and it cannot be guaranteed that the bearings can reliably touch the scale grating. The contact force of each bearing is uneven and the contact reliability is low; 3 .When a single elastic mechanism is installed and removed from the indicating grating carriage, the elastic mechanism deforms greatly. Over time, the elastic mechanism tends to fail gradually, and the elastic force provided changes greatly; 4. One hand is required to hold the lighting mechanism, and the other hand To adjust the relative position of the lighting mechanism and the indicating grating carriage, it is inconvenient to operate the small lighting mechanism with two hands at the same time

Problems 1, 2 and 3 in the existing patented technology (Application No.: 201410380365.1) will seriously affect the positional relationship between the indicating grating and the scale grating, resulting in the signal generated when the two move relative to each other and the conditions for the ideal positional relationship between the two There is a large deviation in the generated signal, which leads to inaccurate reference signals when the lighting mechanism is installed on the indicating grating carriage, and finally leads to inaccurate bonding positions of the lighting mechanism and the indicating grating carriage

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