Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

A Comparative Study of CMM Flat-Surface Inspection Plans

Published

Author(s)

J Hsu, T Hsu, James J. Filliben, Ted Hopp

Abstract

This document reports on the findings from a collaborative effort by J. P. Hsu of the University of Texas at El Paso, T. W. Hsu (also of the same affiliation), James J. Filliben of the Statistical Engineering Division of the National Institute of Standards and Technology (NIST), and Theodore H. Hopp of the Machine Intelligence Group at NIST. The subject of the investigation was inspection sampling plans as related to coordinate measuring machines (CMM). The goal of the investigation was to compare various inspection plans, and, in particular, to make recommendations on minimal sample sizes to achieve pre-specified engineering tolerances on a CMM. The investigation is baseline in the sense that the recommendations flow from a part geometry which is--by design--fundamental (a plane) and a part characteristic which is fundamental (flatness). This report provides details on the engineering consideratiomns that went into setting up and running an appropriate experiment, and the several quantitative and graphical data analysis steps involved in the subsequent statistical analysis. We expect that the information included in this report will be of interest to CMM users, designers, and manufacturers; and we expect such procedural detail to serve as a guideline for other researchers involved on more complicated part geometries and part characteristics.
Citation
NIST Interagency/Internal Report (NISTIR) - 4897
Report Number
4897

Keywords

CMM's, coordinate measuring machines, flatness, inspection plans, sample size determination, sampling plans

Citation

Hsu, J. , Hsu, T. , Filliben, J. and Hopp, T. (1992), A Comparative Study of CMM Flat-Surface Inspection Plans, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.4897, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=821192 (Accessed June 17, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created June 30, 1992, Updated October 12, 2021