| In this paper, application of convex hull is proposed to slove the problem of global tool interference avoidance in 5-axis sculptured surface machining. Two different methods for interference checking have been developed. Quick feasibility checking is used to find a conservative feasible tool orientation by using the control mesh of a sculptured surface. Detailed feasibility checking uses exact surface to detect tool interference. A correction method for removing tool interference has also been developed.In quick feasibility checking, a convex hull is applied to check whether a tool orientation is feasible. If the tool orientation by using this algorithm is not feasible, the detailed feasibility checking is developed to detect the global tool interference.In detailed feasibility checking, the problem of interference avoidance is solved by transforming them to the test of relation between tool surface and triangular patches. |
