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RESEARCH PAPERS: Mechanisms Papers

Stability and Kinematic Accuracy of Hydraulic Copying Mechanisms in Metal Cutting

[+] Author and Article Information
W. M. Mansour

Mechanical Engineering Department, Solid Mechanics Division, University of Waterloo, Waterloo, Ontario, Canada

M. O. M. Osman

Mechanical Engineering Department, Sir George Williams University, Ontario, Canada

G. M. L. Gladwell

Civil Engineering Department, Solid Mechanics Division, University of Waterloo, Waterloo, Ontario, Canada

J. Eng. Ind 95(3), 787-793 (Aug 01, 1973) (7 pages) doi:10.1115/1.3438226 History: Received July 18, 1972; Online July 15, 2010

Abstract

The nature and the size of the cutting forces were investigated to develop a model that accounts for their fluctuation. Due to the interaction between the velocity of the power cylinder and the cutting forces, the governing equations contained periodic coefficients. Stability analysis showed that the fluctuations of the cutting forces and their averages played important roles. Dimensionless plots were developed to be used as a guide for the design and operation of copying mechanisms. The kinematic accuracy of copying was found to be influenced most by the coefficient of leakage, and the degree of under lap of the spool valve. Digital and analog approaches were used in this study.

Copyright © 1973 by ASME
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