基于B样条曲线的电脑横机三角优化设计

Optimal Design of Cam of Compute Flat Knitting Machine Based on B-spline

针对电脑横机三角的轮廓曲线大多由直线和圆弧连接而成,造成三角和织针使用寿命低、机器速度受到受限、整机稳定性差等问题。在运用ANSYS/LS-DYNA对织针和三角进行动力学分析的基础上,采用B样条曲线对原有三角轮廓曲线进行优化设计。优化设计后,三角和织针相互间的冲击作用明显降低。

In allusion to such problems as short service life of cam and knitting needle, limited machine speed and poor machine stability caused by the situation that the profile curve of cam of computer flat knitting machine is mostly connected by straight line and arc, this paper conducts optimal design of the original profile curve of cam u- sing Bspline on the basis of conducting kinetic analysis on knitting needle and cam by using ANSYS/LS-DYNA. After optimal design, the mutual impact effect of cam and knitting needle greatly reduces.