Authors: Stanislav S Makhanov
Publish Date: 2009/09/26
Volume: 47, Issue: 9-12, Pages: 1167-1208
Abstract
The paper presents a survey of fiveaxis computer numerical controlled CNC machining optimization methods employing adaptable geometric patterns First the survey introduces evolution of CNC interpolators from the simplest Taylor seriesbased routines to sophisticated procedures based on constraint minimization from dynamic systems control theory Furthermore a variety of methods based on spline interpolation NURBS interpolation and Farouki’s Pythagorean–hodograph curves is presented and analyzed Next the survey deals with techniques to optimize the positions and orientations of the tool in a particular neighborhood of the part surface The most important application of these techniques is cutting by a flatend or a fillet mill while avoiding local overcuts or undercuts due to the curvature interference and rear gouging This section is supplemented by detection of global interference using visibility cone schemes and their recent modifications and improvements Solutions offered by solid modeling are presented as well Finally adaptable geometric patterns employed for tool path generation are considered and analyzed The adaptation is performed using certain criteria of the tool path quality such as kinematics error scallops possible undercuts or overcuts and the continuity of the path Also covered are complex pocket milling employing geometric patterns capable of following the boundary such as the offset methods regional milling the potential path methods and clustering The chapter also presents tool path optimization based on the adaptable curvilinear grids connecting the cutter location points Finally navigation approaches and the shortestpath schemes are considered along with the adaptive spacefilling curve algorithms and their combinations with grid generation
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