Design, Specification and Tolerancing of Micrometer - Tolerance Assembles

Published

January 1, 1995

Author(s)

Dennis A. Swyt

Abstract

As increasing number of economically important products manufactured by U.S. companies are comprised of assemblies of macroscopic parts with microscopic tolerances, that is, parts from a few to hundreds of millimeters in size where the acceptable deviations from those dimensions are of the order of micrometers. Such micrometer-tolerance assemblies include not only the expected purely electronic products such as integrated circuits devices and hybrid electronic-mechanical produces such as magnetic memory read-write heads, but the less expected purely mechanical products such as magnetic memory read-write heads, but the less expected purely mechanical products such as elements of automobile combustion-engine, hydraulic-valve and fuel-injector systems. This paper reports examples of micrometer-tolerance assemblies, discussing design, specification and tolerancing (DS&T) strategies which some companies have adopted far manufacture of such assemblies, and identifies generic-technology, measurement and standards issues in DS&T associated with that manufacture.

Citation

NIST Interagency/Internal Report (NISTIR) - 5615

Report Number

5615

NIST Pub Series

NIST Interagency/Internal Report (NISTIR)

Pub Type

NIST Pubs

Keywords

assemblies, automobile engine, design, measurement, specification, standards, tolerancing

Citation

Swyt, D. (1995), Design, Specification and Tolerancing of Micrometer - Tolerance Assembles, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD (Accessed December 7, 2024)