The Hammer QSD-Quick Stop Device for High Speed Machining and Rubbing

[+] Author and Article Information
J. T. Black, C. R. James

Department of Industrial & Systems Engineering, The Ohio State University, Columbus, Ohio 43210

J. Eng. Ind 103(1), 13-21 (Feb 01, 1981) (9 pages) doi:10.1115/1.3184455 History: Received June 01, 1980; Online July 30, 2009


A quick stop device (QSD) was designed for use in orthogonal machining and rubbing experiments. QSD’s are used to obtain chip root samples that are representative of the deformation taking place during dynamic (actual) cutting conditions. These “frozen” specimens are helpful in examining the plastic deformation that occurs in the regions of compression and shear which form the chip; the secondary shear at the tool-chip interface; and the nose ploughing/flank rubbing action which operates on the newly machined surface. The Hammer QSD employs a shear pin mechanism, broken by a flying hammer, which is traveling at the same velocity as the workpiece. The device has been successfully tested up to 6000 sfpm (30.48 m/sec).

Copyright © 1981 by ASME
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