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High speed machining is playing a more and more important role in modern machines shops, in particularly, in aerospace machining, mold and die machining. In high speed milling operations, a path that has the least number of sharp turns is preferred. Spiral curve is a special curve which can have no sharp turn, and the step-over between adjacent segments can also be controlled to a predefined value. However, traditional approaches to finding such a path either work for very simple convex regions, or, for irregular shapes, many overlap linkage paths have to be used. Thus, although spiral curves are promising, there is still not a good algorithm in generating a path which 1) covers the entire region, 2) has least number of turns, 3) uses a controllable step-over value. In this paper, we will introduce a novel approach which covers a 2D region in a very efficient manner. In particular, 1) it covers the 2D region using a set of modified spiral curves based on the geometry of the 2D region, 2) these cur...

A Novel Cutter Path Planning Approach to High Speed Machining