Milling Process Simulation—A Generic Solid Modeller Based Paradigm
Author:
Mounayri H. El1, Spence A. D.1, Elbestawi M. A.1
Affiliation:
1. Intelligent Machines and Manufacturing Research Center, Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, CANADA L8S 4L7
Abstract
A generic solid modeller based milling process simulation system is developed for 3-axis milling of complex parts. Parts are described using a boundary representation solid model, and cutting edges are fitted with cubic Be´zier curves. For every completed tool path (i.e., one NC block), the tool swept volume is generated and intersected with the part, yielding the corresponding removed material volume. The tool cutting edges are then intersected with that volume to produce the tool-part immersion geometry. The mechanistic milling process model produces an accurate simulation of cutting forces, torque and power. Modelling of tool and tool holder dynamics is included. The system is based on a generic procedure for extracting geometric data required to accurately simulate milling of complex parts. Any tool shape can be represented, and extension to 4- and 5-axis machining is straightforward. Related processes such as turning and drilling can be modelled in a similar way. The capability of the system is demonstrated experimentally for ball end milling.
Publisher
ASME International
Subject
Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering
Reference39 articles.
1. Abrari, F., Elbestawi, M. A., and Spence, A. D., “On the Dynamics of Ball End Milling. Part I: Modelling of Cutting Forces,” Int’l Journal of Machine Tools and Manufacturing, in press. 2. Anderson R. O. , 1987, “Detecting and Eliminating Collisions in NC Machining,” Computer Aided Design, Vol. 10, No. 4, pp. 231–237. 3. Armerago E. J. A. , and DeshpandeN. P., 1989, “Computerized Predictive Cutting Models or Forces in End Milling Including Eccentricity Effects,” CIRP Annals, Vol. 38, No. (1), pp. 45–49. 4. Atherton, P., Earl, C., and Fred, C., 1987, “A Graphical Simulation System for Dynamic Five-Axis NC Verification,” Autofact Show of the Society of Manufacturing Engineers, Detroit, Nov. 2–1 to 2–12. 5. Chappel I. T. , 1983, “The Use of Vectors to Simulate Material Removed by Numerically Controlled Milling,” Computer Aided Design, Vol. 15, No. 3, May, pp. 156–158.
Cited by
59 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|