通过数学计算与使用靠模夹具，求得铣削回珠器回珠槽指状铣刀的运动轨迹。
By mathematical calculation and using a copying fixture, the orbit of movement of an end-milling form cutter is obtained.
但是，在仿形铣削中，是由滚子直接与铣刀头耦连，紧靠在样板或靠模上，以获得零件所需外形。
With tracer-controlled milling, however, the required form is generated by causing a tracer, directly coupled to a cutting head, to follow a template or a model.
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