Servo-type multi-position turntable and its precision characteristic testing device

Abstract

The invention discloses a servo-type multi-station rotary table and a precision property testing device thereof. The rotary table comprises a rack and a fixed disc arranged on the rack, a multi-station rotary disc is installed on the fixed disc, a servo motor is installed on the rack, and the servo motor is in transmission connection with the multi-station rotary disc through a harmonic speed reducer; a photoelectric switch is installed between the multi-station rotary disc and the fixed disc, a motor encoder is installed on an output shaft of the servo motor, and an original point reset device is formed by the photoelectric switch and the motor encoder. The testing device comprises an angle encoder testing device and an eddy current displacement sensor testing device. According to the servo-type multi-station rotary table and the precision property testing device thereof, by means of the rotary table, the intermittent movement of the multi-station rotary disc under different numbers of divisions, different movement-static rates, different movement directions and different accelerating and decelerating control modes can be achieved; by means of the precision testing device, measurement of parameters such as fine division errors, dynamic division errors and repetitive errors of the multi-station rotary disc can be achieved.

Description

technical field [0001] The invention relates to a multi-station turntable used in an automatic production and assembly production line and a precision characteristic testing device thereof, in particular to a servo-type multi-station turntable device, a turntable precision measuring device and a motion control method thereof. Background technique [0002] In automated production and assembly, in order to improve the degree of automation of production or meet the process requirements, the mechanical system must perform periodic stepping motion or indexing rotation, and convert the rotary motion of the input shaft into intermittent motion or indexing rotation of the actuator. , to complete a series of standard operations such as machining, transposition, feed, commutation, and indexing. The widely used multi-station turntable device is mainly composed of ratchet mechanism, groove wheel mechanism, incomplete gear mechanism, indexing cam mechanism or their mutual combination mec...

AI Technical Summary

Problems solved by technology

[0003] Due to the low operating accuracy of the traditional multi-station turntable device, the existing detection devices for the accuracy characteristics of the multi-station turntable device mainly focus on static accuracy characteristic detection, and less attention is paid to the measurement of its dynamic characteristics, which is increasingly unable to satisfy Measurement requirements for precision characteristics of new multi-station turntable device

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