MANUFACTURE OF HYPOID GEAR BASED

ON COMPUTER NUMERICAL CONTROL

CUTTING MACHINE

SU Zhijian¹  WU Xutang²

(1. College of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001；
2. College of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049 )

Abstract: Based on the conceptual model of the five-axis simultaneous CNC bevel gear cutting machine, a new machining theory for the function-oriented active tooth surface of hypoid gear is proposed. The equation of meshing, control equation of the tooth depth and the second order geometric parameters of the gear tooth surface are established. A new algorithm for determining the motion function of machine tool, cutter velocity and point radius of cutter is given. In this process, there is no need for calculating of the moving acceleration and the acceleration rate of the cutter. According to this theory, the second order geometric parameters of the gear tooth surfaces and the designed tooth depth can be generated accurately. At the same time, above-mentioned manufacture method for the hypoid gear is universal and can be used to manufacture many kinds of point mesh gears.

Key words: Computer numerical control(CNC) Hypoid gear Active tooth surface design

CLC No: TG132.4

国家自然科学基金资助项目(59775009). Received 20060613, received in revised form  20070115