An approach to strip-maximization machining based on tolerance constraints for sculptured surfaces

Jianhua Yang, Dinghua Zhang, Juan Zhang, Baohai Wu

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

To improve the efficiency of complex surfaces machining with toroidal tools, an approach about the tool path planning of strip-maximization machining is proposed by combining with the design tolerance zone. According to second-order Taylor approximation method, the strip width within the entire tool path is calculated, and then its adjustability is assessed based on the predefined strip-width-ratio threshold. For these adjustable tool path, the cutting contact points(CCPs) which decrease the strip width are analyzed. Each point of them is transformed into another actual CCP with a reasonable translation distance along the normal vector on the corresponding surface, where the value is in the constraints of tolerance zone. Thus the optimal strip-width is obtained. The influence analysis of strip-width from surface characteristic indicates that the theory based on the tolerance constraints is versatile. Example shows that the strip-width calculated by the proposed method is significantly expanded by 26.5%, comparing to second-order Taylor approximation method. Meanwhile, the length of the CCPs path is shortened by 22.7%. Therefore, the simulation result verifies the effectiveness in the complex surface machining with toroidal cutters.

Original languageEnglish
Pages (from-to)130-136
Number of pages7
JournalJixie Gongcheng Xuebao/Journal of Mechanical Engineering
Volume49
Issue number3
DOIs
StatePublished - 5 Feb 2013

Keywords

  • Sculpture surface
  • Second-order Taylor approximation method
  • Strip-maximization machining
  • Tolerance constraints
  • Toroidal tool

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