Controlled-Force Grinding—A New Technique for Precision Internal Grinding

[+] Author and Article Information
Robert S. Hahn

Research Department, Heald Machine Company, Worcester, Mass.

J. Eng. Ind 86(3), 287-293 (Aug 01, 1964) (7 pages) doi:10.1115/1.3670536 History: Received June 14, 1963; Online December 08, 2011


The causes of random-size variations and random-taper variations in feed-rate grinding are described and related to stock variations and wheel-sharpness variations. A new technique, controlled-force grinding, is presented which eliminates errors resulting from variable elastic deflections. An analysis is made of the rounding-up dynamics of the controlled-force system and a critical workspeed is found which must be exceeded in order to have a rounding-up action. A study is also made of the stability of the system using the Nyquist criterion.

Copyright © 1964 by ASME
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