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Title: Cutting tool form compensaton system and method

Abstract

A compensation system for a computer-controlled machining apparatus having a controller and including a cutting tool and a workpiece holder which are movable relative to one another along a preprogrammed path during a machining operation utilizes a camera and a vision computer for gathering information at a preselected stage of a machining operation relating to the actual shape and size of the cutting edge of the cutting tool and for altering the preprogrammed path in accordance with detected variations between the actual size and shape of the cutting edge and an assumed size and shape of the cutting edge. The camera obtains an image of the cutting tool against a background so that the cutting tool and background possess contrasting light intensities, and the vision computer utilizes the contrasting light intensities of the image to locate points therein which correspond to points along the actual cutting edge. Following a series of computations involving the determining of a tool center from the points identified along the tool edge, the results of the computations are fed to the controller where the preprogrammed path is altered as aforedescribed.

Inventors:
 [1];  [1]
  1. Oak Ridge, TN
Publication Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
868974
Patent Number(s):
US 5255199
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
cutting; tool; form; compensaton; method; compensation; computer-controlled; machining; apparatus; controller; including; workpiece; holder; movable; relative; preprogrammed; path; operation; utilizes; camera; vision; computer; gathering; information; preselected; stage; relating; shape; size; edge; altering; accordance; detected; variations; assumed; obtains; image; background; possess; contrasting; light; intensities; locate; therein; correspond; following; series; computations; involving; determining; center; identified; results; fed; altered; aforedescribed; workpiece holder; preprogrammed path; machining apparatus; light intensities; cutting edge; cutting tool; machining operation; movable relative; operation utilizes; tool edge; computer-controlled machining; /700/348/382/

Citation Formats

Barkman, William E, Babelay, Jr., Edwin F., and Klages, Edward J. Cutting tool form compensaton system and method. United States: N. p., 1993. Web.
Barkman, William E, Babelay, Jr., Edwin F., & Klages, Edward J. Cutting tool form compensaton system and method. United States.
Barkman, William E, Babelay, Jr., Edwin F., and Klages, Edward J. Fri . "Cutting tool form compensaton system and method". United States. https://www.osti.gov/servlets/purl/868974.
@article{osti_868974,
title = {Cutting tool form compensaton system and method},
author = {Barkman, William E and Babelay, Jr., Edwin F. and Klages, Edward J},
abstractNote = {A compensation system for a computer-controlled machining apparatus having a controller and including a cutting tool and a workpiece holder which are movable relative to one another along a preprogrammed path during a machining operation utilizes a camera and a vision computer for gathering information at a preselected stage of a machining operation relating to the actual shape and size of the cutting edge of the cutting tool and for altering the preprogrammed path in accordance with detected variations between the actual size and shape of the cutting edge and an assumed size and shape of the cutting edge. The camera obtains an image of the cutting tool against a background so that the cutting tool and background possess contrasting light intensities, and the vision computer utilizes the contrasting light intensities of the image to locate points therein which correspond to points along the actual cutting edge. Following a series of computations involving the determining of a tool center from the points identified along the tool edge, the results of the computations are fed to the controller where the preprogrammed path is altered as aforedescribed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Patent:

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