A Non-Uniform Offset Algorithm for Milling Toolpath Generation Based on Boolean Operations

In milling, the advancement of CAM strategies has increased need for tailored algorithms semi-finished phase computation. some cases (e.g., thin-wall milling), variable radial engagement tool during toolpath is desired, leading to non-uniform machining allowance on component that could be achieved only with a offset algorithm, i.e., where distance initial contour varies along input. This work presents general algorithm polyline curves. The approach based 2D polygons and Boolean union operation, following these steps: (i) projection segments are generated, (ii) (trapezoids circular sectors) created, (iii) all performed, (iv) boundary interest extracted. proposed able handle both internal external robust complexity magnitude line, as proven by several examples two applications milling provided.