新型环面蜗杆成形法加工的分析与验证  

The Analysis and Verification for the Forming Method of Novel Toroidal Worm

作　　者：张燕[1] 王君泽[1] 陈厚军[1] 张小萍[1] 

机构地区：[1]南通大学机械工程学院,南通226019

出　　处：《组合机床与自动化加工技术》2012年第11期21-24,28,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金资助项目(51105210);南通大学自然科学研究项目(10ZY006)

摘　　要：新型环面蜗杆副是一种改进的传动形式,基于成形法加工,提出蜗杆廓面加工误差的评定方法,验证实际加工的可行性。利用三坐标测量机的接触式测量方法获得蜗杆廓面上离散点的坐标值,经测头半径补偿、坐标系转换将实际测点和理论测点进行匹配,借助双三次B样条曲面拟合获得实际加工的环面蜗杆廓面,采用法向误差法获得了蜗杆的齿形误差图,并分析了该误差对啮合点的影响。结果表明齿形误差小于0.0021mm,且实际齿形误差图和理论齿形误差图的变化趋势一致,实际啮合点符合设计要求,从而验证了加工方法的正确性。The novel toroidal worm pair is an improved type of transmission. Based on the forming method, the method of error assess of worm surface is put forward to verify the feasibility of the machi ning method. The actual coordinates, which are obtained by contact measurement of the threecoordinate instrument, are matched with theoretic coordinates with the radius compensation and coordinate conver sion. The actual surface is fitted by bicubic Bspline surface, the sketch of the tooth profile error is ob tained with the method of normal error, and the impact of error on the meshing points is analyzed. The results show that the tooth profile error is less than 0. 0021mm, the trend of the actual tooth profile is consistent with theoretic, and the actual meshing points also meet the design requirement, thus verifying the correctness of machining methods.

关 键 词：环面蜗杆 B样条曲面 成形法 

分 类 号：TH132.44[机械工程—机械制造及自动化]