大型数控成形磨齿齿形误差分析及补偿  

The Tooth Profile Error Analysis and Compensation of the Large Cnc Forming Gear Grinding

作　　者：刘洋河 洪荣晶[1] 张虎 张浩 LIU Yang-he;HONG Rong-jing;ZHANG Hu;ZHANG Hao(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China;Nanjing Gongda CNC Technology Co.,Ltd.,Nanjing 211800,China)

机构地区：[1]南京工业大学机械与动力工程学院,南京211816 [2]南京工大数控科技有限公司,南京211800

出　　处：《组合机床与自动化加工技术》2023年第4期156-159,164,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(51635003);江苏省科技成果转化专项(BA2017099);江苏省研究生科研与实践创新计划项目(CX10291)。

摘　　要：针对大规格齿轮齿形误差溯源困难的问题,提出一种“滚-磨”工艺计算方法,分析砂轮的位置误差(中心距误差、安装角误差、切向误差)、半径误差及齿轮的齿数、螺旋角对齿形误差的影响,并建立磨齿机几何误差传动链模型,对齿轮精度进行测量和补偿。该齿形误差溯源及补偿方法,分析磨齿工艺参数与几何误差之间的关系,经测试其补偿后精度可达GB4级。应用算例分析表明,“滚-磨”工艺计算方法在齿形误差分析时可大大降低计算量和求解难度,能准确获得齿形误差产生的原因,所开发的补偿工艺,可以通过几何误差调整磨齿工艺参数,为大型数控成形磨齿齿形误差溯源及补偿提供科学依据。A method based on the gear hobbing and gear grinding process calculation is proposed to solve the problem of tooth profile error tracing of large wind power gears.The method can analyze the influence of position errors(center-to-center distance errors,installation angle errors,tangential errors),radius errors,teeth number and helical angle on gear teeth profiles.Then the geometric error model can be built.The gear accuracy can be measured and compensated by the teeth profile error tracing method.The algorithm analyzes the relationship between the grinding gear manufacturing parameters and geometric errors.It can be proved that the gear accuracy can be improved to GB4 class after compensation.The application of the numerical example shows:“hobbing-grinding”process calculation method can greatly reduce the amount of calculation and solving difficulty in teeth profile error tracing,and can accurately obtain the cause of teeth profile error.The developed compensation process can use the geometric errors to adjust the grinding gear manufacturing parameters,which provides a scientific basis for teeth profile error tracing and compensation of large CNC forming gears.

关 键 词：“滚-磨工艺” 位置误差 半径误差 几何误差 齿形误差 

分 类 号：TH16[机械工程—机械制造及自动化] TH501