DYNAMIC RESPONSE OF ROLLER GEAR INDEXING CAM SYSTEM CONSIDERING CLEARANCE AND MOTOR CHARACTERISTIC

摘要

The dynamic response of roller gear indexing cam mechanism are investigated. With applying Lagarange equation and Gear method, motion equations of this mechanism including clearance, motor characteristic, torsion flexibility are developed and solved. The results show that clearance affects primarily the response on turret, and has little effects on the responses on rotary table. At the same time, the velocity fluctuation of motor shaft is not serious for the existence of inertia of reducer, and the high frequency of velocity fluctuation of camshaft is related with the torsion stiffness of shaft and the clearance between pairs.