数控运动相邻加工段拐角的平滑转接方法  

Smoothing Transfer for the Corner of Adjacent NC Processing Segment

作　　者：黄建[1] 宋爱平[1] 陶建明[1] 尹玮中[1] 

机构地区：[1]扬州大学机械工程学院,江苏扬州225127

出　　处：《上海交通大学学报》2013年第5期734-739,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(50975249);江苏省产学研联合创新项目(SBY201220124)

摘　　要：为了实现数控运动相邻加工段的高速平滑转接,采用可调形的3次插值样条转接曲线进行平滑拐角过渡.在拐角过渡的过程中,保持运动速度不变,采用改变样条转接曲线的调形系数来调整其曲率半径并控制加速度.结果表明,采用可调形的3次插值样条转接曲线控制的平滑拐角转接方法可以保证运动路径的平稳、进给速度的连续并提高加工效率,能够有效降低加速度突变,减轻加工过程对机床的冲击.In order to realize smooth transfers along a continuous segment trajectory, adjustable form of the cubic spline connecting curve was made for corner transition. The movement speed remains unchanged dur- ing the process of corner transition, changing the form adjustment coefficient of the spline connecting curve to adjust its curvature radius and controlling the value of acceleration. The results show that this method of adjustable form of the cubic spline connecting curve control corner transition can guarantee the smooth- ness of the path and the continuity of the speed and improve the machining efficiency, and reduce the accel- eration mutations effectively, lessen the impact to machine tool.

关 键 词：平滑转接 样条曲线 曲率半径 加速度 

分 类 号：TH161.6[机械工程—机械制造及自动化]