Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (4): 91-96,104.doi: 10.3969/j.issn.1000-565X.2014.04.014

• Mechanical Engineering • Previous Articles     Next Articles

High- Precision Modification of Tooth Surface for Spiral Bevel Gears

Su Jin- zhan He Zhao- xia   

  1. Key Laboratory of Road Construction Technology and Equipment of the Ministry of Education,Chang'an University,Xian 710064,Shaanxi,China
  • Received:2013-12-09 Revised:2014-03-20 Online:2014-04-25 Published:2014-03-03
  • Contact: 苏进展(1982-)，男，博士，讲师，主要从事齿轮传动技术研究． E-mail:sujinzhan@chd.edu.cn
  • About author:苏进展(1982-)，男，博士，讲师，主要从事齿轮传动技术研究．
  • Supported by:

    国家自然科学基金资助项目(51205310);长安大学中央高校基本科研业务费专项资金资助项目(2013G3252005，2014G1251031)

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Abstract:

In order to improve the meshing performance of gear drive,an Ease- offbased modification method oftooth surface is proposed for spiral bevel gears. By predesigning the contact ratio of gear pair,the symmetric para-bolic function of transmission error and the contact ellipse,a bidirectional modification of the pinion surface is per-formed along the contact path and the contact line,thus obtaining the target tooth surface.Then,a least- square op-timization model is established to identify the machine- tool setting parameters approaching the target surface via theLevenberg- Marquardt method based on a trust- region strategy.The results of numerical examples show that a set ofmachine- tool setting parameters approaching the target surface can be obtained through limited iterations,which en-sures the pre- designed meshing performance and keeps the maximum derivation of tooth surface within 2.0μm; andthat the pre- designed contact ratio,the transmission error amplitude and the contact ellipse all directly affect theiteration times as well as the precision of tooth surface modification.

Key words: spiral bevel gear, tooth surface modification, transmission error, contact ratio, Levenberg- Marquardt method