Chang Lehao
2 Papers
Chang Lehao is an academic researcher. The author has contributed to research in topics: Tooth surface & Involute. The author has co-authored 2 publications.
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Papers
Patent
High-contact-ratio gleason spiral bevel gear design method
Su Jinzhan,Chang Lehao,Feng Shuo,He Zhaoxia +3 more
- 02 Jun 2020
TL;DR: In this paper, a high-contact-ratio gleason spiral bevel gear design method is presented, which comprises the steps of presetting a geometrical transmission error curve, and deriving a relational expression of large and small gear meshing rotation angles; by means of the principles of transformation of homogeneous coordinates and space meshing, obtaining a small gear auxiliary tooth surface making line contact with a large gear, computing the largest design contact ratio of a gear pair; computing the profiling length and the profiling quantity on the tangent plane of the contact point, superposing
Patent
Gear pair design method based on clothoid rack cutter
Su Jinzhan,Chang Lehao,Feng Shuo,He Zhaoxia +3 more
- 23 Jun 2020
TL;DR: In this article, a gear pair design method based on a clothoid rack cutter is presented, which consists of the steps of placing a linear blade and an arc blade of the rack cutter and by means of the involute profile generating theory, the tooth profile of a conjugate gear pair is obtained; geometric constraint conditions are established with gear tooth basic parameters, and the shape parameter of the clothoid is calculated.