The Research of Dual NURBS Curve interpolation algorithm for 5 axis high speed machining

摘要：

In order to overcome the disadvantages of conventional CNC machining methods,smooth feedrate optimization scheme have been used in many CNC machines to minimize the start/stop motions and to achieve a constant feed rate.However,this scheme meets the problem of having some short linear segment cannot be discretized exactly in an integer interpolation period because of the nonzero start velocity of the segment，and the small remnant which makes in the end will cause the position error or speed fluctuation.To overcome these drawbacks,the variable period feed interpolation algorithm for high-speed five-axis machining having the function of “Look-ahead is proposed.The algorithm overcomes the speed fluctuation in the last period effectively.Meanwhile the precision and speed of machining is improved greatly.To ensure the real-time,we test the delay caused by the changes of the period length.With the efficient adjusting method,the delay can be controlled in allowable extent.Finally,the presented algorithm is demonstrated by the experimental results.

关键词： Optimal feed Five-axis machining Linear Interpolation variable interpolation RTX.

作者: Yuyao Li Yuhan Wang Jingchun Feng Jianguo Yang

作者单位: School of Mechanical Engineering Shanghai Jiao tong University,State Key Laboratory of Mechanical Sy School of Mechanical Engineering Shanghai Jiao tong University,Shanghai China,200240

会议类型: 国际会议

会议名称: International Conference on Modelling,Identification and Control(模拟、鉴定、控制国际会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）