Optimum tool path generation for 2.5D direction-parallel milling with incomplete mesh model |
| |
Authors: | Hyun-Chul Kim |
| |
Affiliation: | (1) Ingram School of Engineering, Texas State University, San Marcos, Texas, USA;(2) Department of Industrial Engineering, Sharif University of Technology, Tehran, Iran; |
| |
Abstract: | Many mechanical parts are manufactured by milling machines. Hence, geometrically efficient algorithms for tool path generation,
along with physical considerations for better machining productivity with guaranteed machining safety, are the most important
issues in milling. In this paper, an optimized path generation algorithm for direction-parallel milling, a process commonly
used in the roughing stage as well as the finishing stage and based on an incomplete 2-manifold mesh model, namely, an inexact
polyhedron widely used in recent commercialized CAM software systems, is presented. First of all, a geometrically efficient
tool path generation algorithm using an intersection points-graph is introduced. Although the tool paths obtained from geometric
information have been successful in forming desired shapes, physical process concerns such as cutting forces and chatters
have seldom been considered. In order to cope with these problems, an optimized tool path that maintains a constant MRR for
constant cutting forces and avoidance of chatter vibrations, is introduced, and verified experimental results are presented.
Additional tool path segments are appended to the basic tool path by means of a pixel-based simulation technique. The algorithm
was implemented for two-dimensional contiguous end milling operations with flat end mills, and cutting tests measured the
spindle current, which reflects machining characteristics, to verify the proposed method. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|