Data analysis for surface plate calibration

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Description

A surface plate is used to establish a reference plane used for making precision dimensional measurements. Ideally, the surface should be perfectly flat. Since it is impossible to create a perfectly flat surface, surface plate are calibrated to determine how much they deviate from a perfectly flat surface. Once a surface plate is calibrated, the user can determine if the plate is flat enough for use in a particular application. The currently accepted method of data analysis for surface plate calibration, the Moody method, does not give optimum results because of the arbitrary way in which the reference plane is ... continued below

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29 p.

Creation Information

Burton, R.N. August 1, 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 33 times . More information about this report can be viewed below.

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Description

A surface plate is used to establish a reference plane used for making precision dimensional measurements. Ideally, the surface should be perfectly flat. Since it is impossible to create a perfectly flat surface, surface plate are calibrated to determine how much they deviate from a perfectly flat surface. Once a surface plate is calibrated, the user can determine if the plate is flat enough for use in a particular application. The currently accepted method of data analysis for surface plate calibration, the Moody method, does not give optimum results because of the arbitrary way in which the reference plane is chosen. The exact solution, wherein the reference plane is located in the optimum position, has been worked out and is given in a step by step procedure along with all of the necessary equations. The amount of calculation involved in a typical example proved to be prohibitive even for a computer, so an alternate solution using a least squares criterion for locating the reference plane was developed. Results were comparable with those from Moody`s method with values being smaller or greater depending on the shape of the plate.

Physical Description

29 p.

Notes

OSTI as DE97054102

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  • Other Information: PBD: Aug 1997

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  • Other: DE97054102
  • Report No.: KCP--613-5986
  • Grant Number: AC04-76DP00613
  • DOI: 10.2172/650156 | External Link
  • Office of Scientific & Technical Information Report Number: 650156
  • Archival Resource Key: ark:/67531/metadc710079

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Creation Date

  • August 1, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • Nov. 19, 2015, 6:53 p.m.

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Burton, R.N. Data analysis for surface plate calibration, report, August 1, 1997; United States. (digital.library.unt.edu/ark:/67531/metadc710079/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.