Design of plastic gear automatic online detection equipment

NAN Hao-xuan, LIN Jia-chun, ZHOU Jia-yi, YUE Hui-jun, SHI Zhao-yao
(Beijing Engineering Research Center of Precision Measurement Technology and Instruments,
Beijing University of Technology, Beijing 100124, China)

Abstract: Aiming at the low efficiency, poor reliability, and high labor costs when plastic gears were manually detected, the plastic gear production technology was researched and production environment was analyzed, the automated testing equipment with functions of feeding, positioning, testing and sorting was designed. A threedimensional model of the mechanical system was established, the automatic control scheme of the mechanical system was designed, the automatic control software was developed. The plastic gear path on the production line was automatically groomed and accurately positioned, high resolution images of gears were acquisited, and according to the detection results of products from the vision information processing software were automatically sorted. Experiments were carried out using testing equipment in conjunction with testing software. The results indicate that the glass turntable rotation speed and endface runout has no effect on the testing results, and that the blanking mechanisms sorting accuracy of the tested products is 100%, and the equipment is suitable for the production line to achieve integration of plastic gears' production, testing and sorting.

Key words: plastic gear; online testing; testing equipment; PLC