Adaptable geometric patterns for five-axis machining: a survey

作者：Makhanov Stanislav S^*

来源：International Journal of Advanced Manufacturing Technology, 2010, 47(9-12): 1167-1208.

DOI：10.1007/s00170-009-2244-z

• Five-axis machines
• Multi-axis machines
• CNC interpolators
• Tool orientation
• Curvature interference
• Rear gouging
• Solid modeling
• Pythagorean-hodograph curves
• Pocket machining
• Regional milling
• Space-filling curves for machining
• Curvilinear grids for machining
• Navigation approach for machining

The paper presents a survey of five-axis computer numerical controlled (CNC) machining optimization methods employing adaptable geometric patterns. First, the survey introduces evolution of CNC interpolators from the simplest Taylor series-based 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 flat-end 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 shortest-path schemes are considered, along with the adaptive space-filling curve algorithms and their combinations with grid generation.

• 出版日期2010-4