Computerized generation and simulation of meshing of modified spur and helical gears manufactured by shaving

✍ Scribed by Faydor L Litvin; Qi Fan; Daniele Vecchiato; Alberto Demenego; Robert F Handschuh; Thomas M Sep

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 347 KB
• Volume: 190
• Category: Article
• ISSN: 0045-7825
• DOI: 10.1016/s0045-7825(00)00362-5

✦ Synopsis

Modi®cation of geometry of spur and helical gears with parallel axes and helical gears with crossed axes is proposed. The ®nishing process of gear generation is shaving. The purposes of modi®cation of gear geometry are: (i) localization and stabilization of bearing contact, and (ii) reduction of noise and vibration.

The goals mentioned above are achieved as follows: 1. The pinion shaver tooth surface, in comparison with a conventional screw involute surface, is pro®le crowned. 2. Plunging during the process of pinion shaving is provided by variation of shortest distance E between the shaver and pinion axes.

Variation of E is executed by application of a parabolic function. 3. The pinion tooth surface becomes double-crowned, in pro®le and longitudinal directions, due to pro®le crowning of pinion shaver and variation of plunging. The gear tooth surface is generated as a conventional involute gear. Tooth contact analysis (TCA) computer program for simulation of meshing and contact of shaved pinion-gear tooth surfaces is developed. The developed theory is illustrated with TCA results obtained for spur and helical gears.