Positioning and splicing device of indicating grating

Abstract

The invention provides a positioning and splicing device of an indicating grating, belongs to the technical field of photoelectric measurement, and aims to conveniently and accurately position the indicating grating before the indicating grating is spliced on an indicating grating carriage. The device comprises a supporting mechanism, a charge coupled device (CCD), an objective lens, a guide rail mechanism, a left pressing needle, a right pressing needle, a regulating mechanism, a light source, the indicating grating and a main grating, wherein the lower end of the CCD is connected to the objective lens; the guide rail mechanism is arranged below the objective lens and is fixedly arranged on the regulating mechanism; the left and right pressing needles are fixedly arranged on the guide rail mechanism; the indicating grating is pressed on the main grating by the left and right pressing needles; the main grating is fixedly arranged on the regulating mechanism; the regulating mechanism is fixedly arranged on a middle seat of the supporting mechanism; the light source is arranged at the bottom end of the supporting mechanism; and light emitted by the light source irradiates on the main grating and the indicating grating and is then imaged on the CCD via the objective lens. The positioning and splicing device is applied to the structure mounting process of a grating ruler, and the reliability of a grating ruler measuring mechanism is guaranteed.

Description

technical field [0001] The invention relates to a positioning bonding device for an indicating grating, and belongs to the technical field of photoelectric measurement. Background technique [0002] In the field of precision measurement and displacement control, the use of grating as a benchmark is internationally recognized as the most practical, economical and reliable technical measure to obtain high precision. The grating ruler measuring mechanism is a representative product to achieve this approach, and is widely used in various machine tools, electromechanical equipment, and automated measuring equipment. [0003] The grating scale used on the CNC machine tool is composed of the main grating and the indicating grating. The main grating is glued on the scale shell, and the indicating grating is glued on the indicating grating carriage of the reading head. When the feed axis of the CNC machine tool moves, the scale The shell and the reading head move relative to each ot...

AI Technical Summary

Problems solved by technology

The traditional craft means is to operate entirely with the eyes and hands of the master installer, so that the position of the indicating grating cannot be adjusted very accurately, making it difficult to guarantee the reliability of the entire grating ruler measurement mechanism, and the accuracy will also be affected to a certain extent

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