基于虚拟中心距加工原理的新型平面二次包络环面蜗杆数控磨床设计及关键技术研究  

Design and key technology research of a novel plane-quadratic-envelope annular worm CNC grinding machine based on virtual center distance grinding principle

作　　者：张庆锋 Qing-feng ZHANG(Shanghai Material Engineering School,Shanghai 200231,China)

机构地区：[1]上海市材料工程学校,上海200231

出　　处：《机床与液压》2020年第24期71-79,共9页Machine Tool & Hydraulics

基　　金：高精度特种外圆磨床设计(院士工作站)重点难度突破项目(ME2019023)。

摘　　要：针对新型平面二次包络环面蜗杆数控磨床研发中的难题,在蜗杆齿面的成形原理及传统磨削方法的基础上分析了齿面的虚拟中心距磨削原理及关键技术,论证了四轴四联动磨削方法的可行性并提出了新型磨床的结构布局及总体设计方案;针对产形面到摆头回转工作台中心轴线距离过大以及砂轮产形面上的磨削点到联动回转工作台中心轴线距离过大的两类难题,在结构布局上提出了砂轮倾角式磨头设计匹配磨头内藏式的设计方案,对于砂轮的修整及补偿方式提出了主轴平移修砂的设计方案,解决了在磨削过程中,因联动回转工作台回转误差所造成的砂轮磨削区域形位超差的问题并完成了机床虚拟样机的设计。For the problems encountered in the development of a novel plane-quadratic-envelope annular worm CNC grinding machine,the article analyzes the forming principle of the worm surface and the traditional grinding method,and then analyzes the virtual center distance grinding principle and key technologies of the worm surface.The feasibility of the four-axis-linkaged grinding method was also proposed,and the structural layout and overall design of the new grinding machine were also proposed.Aiming at the two problems of the large distance between the grinding processing surface and the center axis of the rotary table and the large distance between the grinding point on the grinding wheel surface and the center axis of the rotary table,an inclined grinding wheel design was proposed on the structural layout of the grinding machine as well as the design scheme of hidden grinding head,at the same time,the design of translational dressing for the dressing and compensation methods of the grinding wheel is proposed.These new schemes solved the problems of the grinding area shape and position out-of-tolerance caused by the table rotation error during the grinding process,and the virtual prototype design of the grinding machine was completed.

关 键 词：虚拟中心距 平面二次包络环面蜗杆 数控磨床 结构设计 

分 类 号：TG596[金属学及工艺—金属切削加工及机床]