小模数弧齿锥齿轮粉末冶金近净成形齿面偏差控制机理研究

项目名称： 小模数弧齿锥齿轮粉末冶金近净成形齿面偏差控制机理研究

项目编号： No.51205109

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 张华

作者单位： 河南科技大学

项目金额： 25万元

中文摘要： 传统的小模数弧齿锥齿轮采用双重双面法加工，加工效率较高但齿面啮合质量难以控制，从根本上限制了其传动性能的提高。为改善我国小模数弧齿锥齿轮的生产现状，本项目拟采取的加工方法为：钢质小轮仍采用双面法展成铣齿，大轮由合金粉末压制、烧结、精整成形，控制大轮的齿面偏差，使其与小轮具有良好的啮合性能。针对本高效、节能的加工方法，深入研究相关的齿面啮合理论与齿面误差控制机理。基于局部共轭原理、齿面接触仿真与预控技术,寻求与小轮齿面良好啮合的理想大轮齿面，作为大轮齿面偏差测量的基准。基于该齿面，研究对大轮模具精确建模、模具齿形的加工与修整方法。建立正确的齿面测量模型，研究齿面精确测量与齿面偏差补偿的方法。探索粉末冶金各工艺环节对大轮齿面偏差的影响规律，结合齿面偏差测量技术，反馈修正大轮的成形模具，使得粉末冶金大轮的齿面符合精度要求。本项目将为小模数弧齿锥齿轮粉末冶金近净成形制造提供理论依据与关键技术支撑。

中文关键词： 小模数；弧齿锥齿轮；粉末冶金；精度；

英文摘要： The common small module spiral bevel gear is manufactured by double-faced generating method, which is that the gear and pinion teeth are milled by the double-faced generating method. It has high machining efficiency, but the mesh quality is not easy to be controlled. For this reason, it's difficult to improve the gear transmisson performance. For enhancing the manufacturing level of our contry's samll module spiral bevel gear, a new machining method is prompted: the steel pinion tooth profile is milled by double-faced generating method, while the gear is machined with powder metallurgy pressing, sintering and precision forming. Controlling the powder metallurgy gear tooth deviation, the mesh quality between the gear and pinion can be improved obviously. This method has the character of high machining efficiency and low energy consumption. For the method above, this project will deeply research the tooth meshing theory and the tooth profile error control mechanism. Based on local conjugate theory and tooth contact analysis technology, the project will design ideal gear tooth profile, which has good mesh quality with the pinion tooth profile.This ideal gear tooth profile can be used as datum of tooth deviation measurement. Based on the ideal gear tooth profile, the project will establish the precision 3D model

英文关键词： small module；spiral bevel gear；powder metallurgy；precision；