Neural network modeling for tool path planning of the rough cut in complex pocket milling

被引:28
作者
Suh, SH
Shin, YS
机构
[1] Pohang University of Science and Technology, Pohang
关键词
pocket milling; rough cutting; tool path planning; neural network; self-organizing map; CAD/CAM;
D O I
10.1016/0278-6125(96)84192-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper presents a new approach to rough-cut tool path planning of pocket milling operations. The key idea is to formulate the tool path problem into a TSP (traveling salesman problem) so that the powerful neural network method can be effectively applied. Specifically, the method is composed of (1) digitization of the pocket area into a finite number of tool points, (2) a neural network method (called a SOM-self-organizing map) for path finding, and (3) postprocessing for path smoothing and feed rate adjustment. By the neural network procedure, an efficient tool path (in the sense of path length and tool retraction) can be robustly obtained for any arbitrary shaped pockets with many islands. In postprocessing, (1) the detailed shape of the path is partially modified by eliminating sharp corners of the path segments and (2) any crossovers between the path segments and islands. With the determined tool path, the feed rate adjustment is finally performed for legitimate motion without requiring excessive cutting forces. The validity and powerfulness of the algorithm is demonstrated through various computer simulations and real machining.
引用
收藏
页码:295 / 304
页数:10
相关论文
共 21 条
[1]   SELF-ORGANIZING FEATURE MAPS AND THE TRAVELING SALESMAN PROBLEM [J].
ANGENIOL, B ;
VAUBOIS, GD ;
LETEXIER, JY .
NEURAL NETWORKS, 1988, 1 (04) :289-293
[2]  
Bao HP, 1992, T N AM MANUF RES I S, V20, P151
[3]   AN ANALOG APPROACH TO THE TRAVELING SALESMAN PROBLEM USING AN ELASTIC NET METHOD [J].
DURBIN, R ;
WILLSHAW, D .
NATURE, 1987, 326 (6114) :689-691
[4]  
*FANUC, 1992, FANUC SER 15 MF OP M, P273
[5]   POCKET MACHINING BASED ON CONTOUR-PARALLEL TOOL PATHS GENERATED BY MEANS OF PROXIMITY MAPS [J].
HELD, M ;
LUKACS, G ;
ANDOR, L .
COMPUTER-AIDED DESIGN, 1994, 26 (03) :189-203
[6]  
HELD M, 1991, COMPUTATINAL GEOMETR
[7]  
HOPFIELD JJ, 1985, BIOL CYBERN, V52, P141
[8]  
KIRKPATRICH S, 1983, SCIENCE, V220, P141
[9]  
KLEIN W, 1982, INT J MACH TOOL MANU, V22, P7
[10]  
Kohonen T., 1984, SELF ORG ASS MEMORY