内燃机活塞裙部车削加工研究

Research on turning machining of piston skirt profile in internal combustion engine

通过对内燃机中凸变椭圆活塞零件的分析,提出了一种新型的适合于中凸变椭圆活塞截面车削加工的方法—采用通用伺服系统加高频震荡系统构成的混合系统,有效的提高了加工速度和加工质量。在比较了目前的椭圆插补算法的基础上,设计了一种采用极坐标的、适合于本车削加工系统使用的新型的中凸变椭圆活塞截面车削加工插补算法,计算简单,运算精度高,可以满足当前数控加工高速高精度的要求。

Based on analysis of the middle-convex and varying ellipse piston in internal combustion engine, a new method of this piston cross-section based on turning machining is presented used a new system that composed by general servo system and high frequency concussive system, advanced the machining speed and quality effectively. Elliptical interpolation method is provided and this method is fit for the middle-convex and varying ellipse piston turning and is different to the passing explained in other literatures. Polar coordinates are introduced to the new method. The method calculates simply, has a high precision, and meets the demands of high speed and high accuracy CNC machining.