Analysis of the Influence of Fixture Locator Errors on the Compliance of Work Part Features to Geometric Tolerance Specifications

[+] Author and Article Information
Rodrigo A. Marin, Placid M. Ferreira

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

J. Manuf. Sci. Eng 125(3), 609-616 (Jul 23, 2003) (8 pages) doi:10.1115/1.1578669 History: Received October 01, 2001; Revised July 01, 2002; Online July 23, 2003
Copyright © 2003 by ASME
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American Society of Mechanical Engineers, 1994, ASME Y14.5.1M-1994 Standard, Mathematical Definition of Dimensioning and Tolerancing Principles, American Society of Mechanical Engineers.
American Society of Mechanical Engineers, 1994, ASME Y14.5M-1994 Standard, Dimensioning and Tolerancing, American Society of Mechanical Engineers.
Laloum, M., and Weill, R., 1991, “The Influence of Fixture Positioning Errors on the Geometric Accuracy of Mechanical Parts,” Proceedings of CIRP Conference on PE & MS, 215–225.
Asada,  H., and By,  A. B., 1985, “Kinematic Analysis of Workpart Fixturing for Flexible Assembly With Automatically Reconfigurable Fixtures,” IEEE J. Rbo. Autom., RA-1(2), pp. 86–94.
Choudhuri,  S. A., and De Meter,  E. M., 1999, “Tolerance Analysis of Machining Fixture Locators,” ASME J. Manuf. Sci. Eng., 121, pp. 273–281.
Wang, M. Y., 1999, “Automated Fixture Layout Design for 3D Workpieces,” Proceedings of the 1999 IEEE Conference on Robotics and Automation, pp. 1577–1582.
Marin,  R., and Ferreira,  P., 2001, “Kinematic Analysis and Synthesis of Deterministic 3-2-1 Locator Schemes for Machining Fixtures,” ASME J. Manuf. Sci. Eng., 123(4), pp. 708–719.
Marin,  R., and Ferreira,  P., 2002, “Optimal Placement of Fixture Clamps: Minimizing the Maximum Clamping Forces,” ASME J. Manuf. Sci. Eng., 124(3), pp. 686–694.
Marin,  R., and Ferreira,  P., 2002, “Optimal Placement of Fixture Clamps: Maintaining Form Closure and Independent Regions of Form Closure,” ASME J. Manuf. Sci. Eng.,124(3), pp. 676–685.
Hunt, K. H., 1978, Kinematic Geometry of Mechanisms, Clarendon Press, Oxford.
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Grahic Jump Location
Schematic of a fixture design and analysis system
Grahic Jump Location
Position tolerance specification for a cylindrical hole
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An example industrial part with a cylindrical hole feature
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An illustration of a case in which tolerance specifications are violated by reducing the magnitude of the error at a locator
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Coordinate system of cylindrical hole feature
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A convex quadratic surface and its corresponding level sets
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Specification of a surface profile tolerance
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Tolerance deviation of a point on the profile



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