Cutting tool form compensaton system and method

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868974

Barkman, William E ^[1]; Klages, Edward J ^[1]

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1. Oak Ridge, TN

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
• Patent Number(s): US 5255199
• OSTI ID: 868974
• Country of Publication: United States
• Language: English

Related Subjects

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
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