Design Innovation Paper

A New and Generalized Hypoid Gear Synthesized with Common Crown Rack Positioned between Pinion and Gear Blanks

[+] Author and Article Information
Nogill Park

Department of Mechanical Engineering, Pusan National University, 2 Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan, South Korea

1Corresponding author.

ASME doi:10.1115/1.4036779 History: Received September 19, 2016; Revised April 11, 2017


A new hypoid gearing using a common crown rack is introduced. The proposed hypoid gear has no unloaded gear transmission errors. The common crown rack is located at a neutral position between the pinion and gear blanks. An arbitrary generating surface inclined by a pressure angle is prescribed. The proposed hypoid gearing is in point-contact with fulfilling the constant speed ratio along the curved line of action. The synthesis feasibility is numerically verified on the full range of hypoid gears including parallel-, intersect- and crossed- axis gear systems. The marking test on a generated hypoid gearing is in good agreement with the simulation results. From that the unloaded gear transmission error is measured less than the notified commercial CNC machine error, it is shown experimentally that the speed ratio of the proposed hypoid gearing keeps constant.

Copyright (c) 2017 by ASME
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