• CN:11-2187/TH
  • ISSN:0577-6686

›› 1997, Vol. 33 ›› Issue (6): 20-25.

• 论文 • 上一篇    下一篇

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切削过程的分叉与突变

王西彬;师汉民;陆涛   

  1. 北京理工大学机械工程与自动化学院;华中理工大学
  • 发布日期:1997-11-01

STUDY ON THE BIFURCATION AND CATASTROPHE OF METAL CUTTING PROCESS

Wang Xibin;Shi Hanmin;Lu Tao   

  1. Bejing Institute of Technology Huazhong University of Science Technology
  • Published:1997-11-01

摘要: 根据非自由切削模型和切削试验研究了切屑流动的分叉突变原理,结果表明:在切削层图形系数gs=1的两侧有两个分叉点gs1和gs2,形成一个分叉区间(gs1,gs2);单位切削功率的连续多极值取向是切屑流动分叉的原因;在分叉区间切屑流动状态的改变呈现出典型的尖点突变特征;突变的滞后性对切削力及切屑旋向有明显的影响。

关键词: 分叉, 金属切削, 突变

Abstract: Bifurcation and catastrophe would emerge in some unstable process of metal cutting. It's principle and characteristics are analyzed based on a theoretical model of non-free-cutting, and verified through cutting test. The study reveals that: There is a fork domain (gs1,gs2) for geometric parameter of cutting layer, and boundary points gs1 and gs2 are in the region of g's= 1. It is the multi-extremum of cutting power that cause the bifurcation of chip ejection angle. The change of chip flow state in fork domain is a typical cusp catastrophe. The catastrophe and its lag phenomenon make a great effect on cutting force and chip form.

Key words: Bifurcation, Catastrophe, Metal cutting

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