An Analysis of Punching Variables by Two-Level Fractional Factorial Design

[+] Author and Article Information
K. K. Wang, Khalil Taraman

Department of Mechanical Engineering, The University of Wisconsin, Madison, Wis.

S. M. Wu

Department of Mechanical Engineering and Department of Statistics, The University of Wisconsin, Madison, Wis.

J. Eng. Ind 92(2), 435-442 (May 01, 1970) (8 pages) doi:10.1115/1.3427772 History: Received July 28, 1969; Online July 15, 2010


A two-level fractional factorial design of experiment is introduced to investigate the effects of several variables on four responses with 16 tests for punching operation. The analysis indicates that the taper on punch bottom is not only the most significant factor affecting punch force but also interacts with another factor, the radius on die mouth. The die radius was found to be the dominating factor affecting the other three responses, i.e., the burr height, the amount of dishing, and the fracture angle. The increase of die radius will reduce burr height but increase dishing and fracture angle.

Copyright © 1970 by ASME
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