Journal of Shanghai Jiaotong University ›› 2012, Vol. 46 ›› Issue (02): 172-177.

• Automation Technique, Computer Technology • Previous Articles     Next Articles

Interference-Free Tool Positioning for Five-Axis Sculptured Surface Machining Using ThirdOrder Point Contact Approach  

 ZHENG  Gang, LU  Yao-An, ZHU  Li-Min   

  1. (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-03-29 Online:2012-02-28 Published:2012-02-28

Abstract: Based on the third-order local approximation of tool envelope surface, an interferencefree tool positioning strategy was proposed for five-axis sculptured surface machining with a constraint on the tool feasibility space. The tool feasibility space is constructed by analyzing the local and global interferences, which is indicated by the distance between the design surface and the tool axis. On this basis, the tool orientations are adjusted and optimized to achieve the optimal contact between the tool envelope surface and the design surface within the computed tool feasibility space. The numerical examples indicate that the proposed method can avoid interferences effectively and improve the machining strip width greatly.

Key words: sculptured surface, flat-end cutter, thirdorder point contact, interference, tool positioning

CLC Number: