一、问题的提出在机械制造中,经常要遇到非整圆零件(如图1)需切割成形。如果单件加工,用铣、刨床加工圆弧是很困难的,精度既低又不经济。若把零件做成整圆的,就可以用车床加工,再进行切割,这样加工比较容易,且精度较高,但是怎样切割却是一个问题。无论用什么方法切割(铣床、线切割等),都要有一条割缝。由于 First, the problem raised In machinery manufacturing, often encounter non-full-round parts (Figure 1) need to cut the shape. If the single-piece processing, milling, planer arc processing is very difficult, low precision and not economical. If the parts made into a full circle, you can use lathe processing, and then cut, so that processing easier, and high accuracy, but how to cut it is a problem. No matter what method of cutting (milling machine, wire cutting, etc.), there must be a kerf. due to