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Indexed by:期刊论文

Date of Publication:2022-06-30

Journal:Guangxue Jingmi Gongcheng/Optics and Precision Engineering

Affiliation of Author(s):机械工程学院

Volume:29

Issue:7

Page Number:1609-1619

ISSN No.:1004-924X

Abstract:Pendulum components are the key parts of a miniature wire-suspended pendulum accelerometer. The accuracy of the assembly directly affects the measurement accuracy of the accelerometer. An assembly equipment for pendulum components is developed in this study. In this equipment, the upper and lower constant fixtures and removable fixtures are designed. The pendulum components are fixed on corresponding constant fixtures through the respective removable fixtures. A linear stepper motor is used to drive a clamp to thread the suspension wire through glass tubes, where the tension of the suspension wire is controlled by a micro-force sensor mounted on the clamp. A vacuum adsorption mechanism is integrated into a 3-D precision motion platform to form the upper operation module. It realizes the picking up, movement, and positioning of the upper fixture. A locking device is integrated into a rotating platform to form the lower operation module. It realizes the fixing and posture adjustment of the lower fixture. After suspension wire threading, the final assembly is achieved through the alignment and combination of the two constant fixtures. During the assembly process, a single camera is set as a stereo vision system via a reflecting prism. Experimental results show that the positioning and parallelism errors of assembly parts are all less than 15 µm. It can meet the requirements of stability, reliability, and high precision of automatic assembly equipment. © 2021, Science Press. All right reserved.

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