DESIGN AND EXPERIMENT OF SPIRAL BEVEL

GEARS WITH HIGH CONTACT RATIO

Deng Xiaozhong

(School of Mechatronics Engineering, Henan University of Science & Technology, Luoyang 471003)

Fang Zongde  Wei Bingyang

(School of Mechatronics, Northwestern Polytechnical University, Xi’an 710072)

Yang Hongbing

(School of Mechatronics Engineering, Henan University of Science & Technology, Luoyang 471003 )

Abstract: The design method of machine-tool settings is proposed on the spiral bevel gears with high contact ratio. Basing on the local synthesis method, TCA and LTCA techniques, a high contact ratio can obtained by enlarging the bias angle of contact path at the tooth surface. The method needn’t modify the geometrical parameters of the gears set and the gear machine-tool settings. The designed gears set may be cut by the present machine-tools and the standard serial cutter. The three designs of different contact paths are presented, the mesh simulation analysis are carried on and the contact ratio are tested. This results demonstrated that these method and theory can be design the spiral bevel of contact ratio reaching to 2.0~3.0.

Key words: Spiral bevel gears  Contact ratio  Machine-tools settings  TCA

CLC No: TH132.4

国家自然科学基金(50175090)与航空科学基金(00C53017)资助项目. Received 20030520, received in revised form 20031130