摘要
曲轴过渡圆角是产生疲劳破坏的主要部位。理想的曲轴圆角形状可以降低曲轴圆角的应力峰值,改善应力分布状况,提高曲轴工作的可靠性。曲轴前端端面、外圆以及过渡圆角采用斜头架磨床成型磨削。由于滚轮的形状误差等因素,圆角采用90°圆弧插补,不能保证其轮廓误差。文章采用9段圆弧逼近90°圆角轮廓,建立圆角轮廓误差补偿模型,设计相应补偿用宏程序,实施圆角轮廓误差补偿。经实际应用表明,圆角轮廓误差控制取得了满意的效果。该方法可以推广应用于金刚碟或金刚笔插补修砂轮圆角R的补偿。
The Contour accuracy of a crankshaft transition fillet is important for the crankshaft working relia-bility. The front end surface, cylindrical surface and the transition fillet of a crankshaft are grinded by an end cylindrical grinder. During this machining, due to the roller’ s shape error and other factors, the contour error of the fillet cannot be guaranteed while 90 degree circular arc interpolation was taken. In this paper, a fillet contour error compensation model was established, the appropriate compensation macro program was designed, and the radical contour error compensation was implemented through 9 circular arcs approaching. The practical application is shown that the satisfactory result is achieved and this method can also be applied in the fillet compensation for wheel dressing when applying diamond disk or stylus.
出处
《组合机床与自动化加工技术》
北大核心
2014年第12期48-50,55,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家科技支撑计划"面向汽车零部件产业的数控装备开发及应用示范"(2012BAF13B10)
关键词
曲轴磨床
误差补偿
宏程序
crankshaft grinder
error compensation
macro program
