CNC, 自由曲线, 刀具路径, 粒子群优化, 双圆弧

In NC machining, the 2-D freeform curves are commonly approximated by a large number of line segments, and there are shortcomings in some aspects, such as errors, smoothness, program amounts, etc. To solve this problem, biarc approximation based on particle swarm optimization was proposed. In order to get the least arcs with the least approximation errors, a fitness function was established through the maximal approximation error and the maximal arc length, and the particle swarm optimization was used to find nodes of the biarcs. The test results show the availability and superiority of this method.

CNC, freeform curve, tool path, particle swarm optimization, biarc