Study on movement forming methods for the machining of elliptic-shaped holes
Study on movement forming methods for the machining of elliptic-shaped holes
复制标题
DOI：
10.1177/0954405413506192
复制
发表时间：
2014-04
期刊：
影响因子：
--
通讯作者：
Peng Liang;Changhou Lu;Jie Ding;Jinkui Ma
中科院分区：
文献类型：
--
作者：
Peng Liang;Changhou Lu;Jie Ding;Jinkui Ma
介绍了椭圆孔加工的运动成形方法。这些方法可以使静压轴心绕轴承中心的公转和刀尖绕轴心的自转的合成的刀尖轨迹成为椭圆。因此，可以实现椭圆孔的加工。研究了在多轴心轨迹与刀尖旋转轨迹同步正向综合和同步反向综合的条件下，形成椭圆刀尖轨迹的必要条件和充分条件。研究了刀尖初始相位角对椭圆刀尖轨迹形成的影响。给出了多轴心轨迹和不同刀尖初始相位角条件下椭圆刀尖轨迹的特征和控制方程。这些研究将为运动形成方法的实现奠定理论基础。传统的椭圆孔加工方法需要在机床上安装辅助进给机构，伺服杆的频率响应特性限制了加工效率。本文提出的成形方法可以克服这些缺点，为椭圆孔的精密加工提供了一种新的途径。
The movement forming methods for the machining of elliptic-shaped holes are presented. These methods can make the tool nose orbit, which is the synthesis of revolution of the hydrostatic shaft center around bearing center and rotation of the tool nose around shaft center, become an ellipse. Thus, the machining of elliptical holes can be achieved. Necessary conditions and sufficient conditions for forming elliptic tool nose orbit, under the condition that multiple shaft center orbits and the tool nose’s rotation orbit take synchronous forward synthesis and synchronous backward synthesis, are studied. The influence of initial phase angle of the tool nose on the formation of elliptic tool nose orbit has also been investigated. Characteristics and control equations of elliptic tool nose orbit under the conditions of multiple shaft center orbits and different initial phase angles of the tool nose are given. These studies will lay a theoretical foundation for the realization of the movement forming methods. Traditional machining methods for elliptic-shaped holes require auxiliary feed mechanism installed on the machine tool, and machining efficiency is limited by the frequency response characteristic of the servo bar. The forming methods presented in this article can overcome these shortcomings and provide a new approach for precision machining of elliptic-shaped holes.