US3986010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tool deflection calibration system
Assignee: International Business Machines Corp
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Filing: 1975-01-14
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Granted: 1976-10-12
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Expires: 1995-01-14
Abstract
Abstract A computer-controlled machine tool includes force deflection and tool-part contact sensors. A tool is inserted in the chuck of the automatic machine tool and the tool is driven over a deflection testing pad on the work support so that upon contact a first tool deflection force is measured. Then the tool is driven a small increment in the same direction to provide a second but greater tool deflection force in the same direction. Then the computer calculates the differential value of the tool deflection force over the distance moved. Also the error between estimated and actual tool diameter is calculated from the difference between the tool offset value used and the distance required for adjustment of the tool from a spaced starting position to contact with the pad.
Inventors
- 👤 Larry Gene Lankford
- 👤 William Robert Whittle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:13
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/416; G05B19/4163; B; B23; B23Q; B23Q17/00; B23Q17/22; B23Q17/2233; B23Q17/2241; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37405; G05B2219/49; G05B2219/49169; G05B2219/49186
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
165 words
In a computer controlled numerical-control system, an object, a numerically-controlled machine tool indluding force sensing means for sensing deflection forces, control means for controlling said numerically-controlled machine tool, data means for generating data directing said tool towards contact with said object having an output coupled to the input of said control means, incrementing means for incrementing said tool towards said object subsequent to contact, said incrementing means having an output coupled to the input of said control means, register means for recording amounts of displacement, calculating means for calculating the deflection force as a function of tool displacement including an input connected to said force sensing means and said register means, said calculating means receiving measurements of said deflection forces from said sensing means at a first tool position in contact with said object, and said calculating means receiving measurements of said deflection forces from said sensing means at a second tool position in contact with said object and spaced from said second tool position.
Claim 2
Dependent Claim
165 words
In a computer controlled numerical-control system, an object, a numerically-controlled machine tool indluding force sensing means for sensing deflection forces, control means for controlling said numerically-controlled machine tool, data means for generating data directing said tool towards contact with said object having an output coupled to the input of said control means, incrementing means for incrementing said tool towards said object subsequent to contact, said incrementing means having an output coupled to the input of said control means, register means for recording amounts of displacement, calculating means for calculating the deflection force as a function of tool displacement including an input connected to said force sensing means and said register means, said calculating means receiving measurements of said deflection forces from said sensing means at a first tool position in contact with said object, and said calculating means receiving measurements of said deflection forces from said sensing means at a second tool position in contact with said object and spaced from said second tool position.
Claim 3
Dependent Claim
38 words
Apparatus in accordance with claim 1 wherein said machine tool includes contact sensing means for sensing contact of a tool with said object, said incrementing means having an input coupled to the output of said contact sensing means.
Claim 4
Dependent Claim
31 words
Apparatus in accordance with claim 2 wherein means is provided for measuring travel from an arbitrary reference point to a point coinciding with sensing of contact by said contact sensing means.
Claim 5
Dependent Claim
29 words
Apparatus in accordance with claim 1 wherein means is provided for measuring travel from an arbitrary reference point to the point of deflection sensing by said force sensing means.
Claim 6
Dependent Claim
94 words
A computer controlled machine tool system for calibrating the force deflection characteristics thereof comprising, a tool, an object firmly supported upon a base, means for moving said tool towards said object, means for sensing contact of said tool with said object, means for measuring deflection forces at a first tool position in contact with said object, means for measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, and means for calculating deflection forces as a function of tool displacement between said separate positions.
Claim 7
Dependent Claim
94 words
A computer controlled machine tool system for calibrating the force deflection characteristics thereof comprising, a tool, an object firmly supported upon a base, means for moving said tool towards said object, means for sensing contact of said tool with said object, means for measuring deflection forces at a first tool position in contact with said object, means for measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, and means for calculating deflection forces as a function of tool displacement between said separate positions.
Claim 8
Dependent Claim
25 words
Apparatus in accordance with claim 5 wherein said means for moving drives said tool in a predetermined direction between said first and second tool positions.
Claim 9
Dependent Claim
31 words
Apparatus in accordance with claim 5 wherein said means for moving drives said tool into contact with said object with deflection of said tool transverse to the axis of said tool.
Claim 10
Dependent Claim
25 words
Apparatus in accordance with claim 7 wherein said means for moving drives said tool to deflect transverse to the direction of travel of said tool.
Claim 11
Independent Claim
84 words
A method for operating a computer controlled machine tool system for calibrating the force deflection characteristics thereof comprising, moving said tool towards an object firmly supported upon a base, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, and calculating deflection force as a function of tool displacement between said separated positions.
Claim 12
Independent Claim
84 words
A method for operating a computer controlled machine tool system for calibrating the force deflection characteristics thereof comprising, moving said tool towards an object firmly supported upon a base, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, and calculating deflection force as a function of tool displacement between said separated positions.
Claim 13
Dependent Claim
57 words
A method in accordance with claim 9 including moving said tool in a predetermined direction beteeen said first and second tool positions, driving said tool into contact with said object with deflection of said tool transverse to the axis of said tool and the ultimate direction of travel of said tool during a related subsequent cutting operation.
Claim 14
Dependent Claim
55 words
Apparatus in accordance with claim 5 including first means for measuring the actual distance of said tool from a starting position to contact with said object, second means for storing a predetermined offset value, and means for determining tool diametral dimension error as a function of values for said first means and said second means.
Claim 15
Dependent Claim
110 words
A computer controlled machine tool system for measuring the tool size of a tool comprising a machine tool, a tool in said machine tool, an object firmly supported upon a base secured to said machine tool, means for moving said machine tool to a predetermined position with said tool spaced from said object, means for driving said tool into contact with said object, and means for measuring displacement of said tool between said predetermined position and the position at which said contact occurs, calculating means associated with said means for measuring for calculating the tool size of said tool as a function of the output of said means for measuring.
Claim 16
Dependent Claim
110 words
A computer controlled machine tool system for measuring the tool size of a tool comprising a machine tool, a tool in said machine tool, an object firmly supported upon a base secured to said machine tool, means for moving said machine tool to a predetermined position with said tool spaced from said object, means for driving said tool into contact with said object, and means for measuring displacement of said tool between said predetermined position and the position at which said contact occurs, calculating means associated with said means for measuring for calculating the tool size of said tool as a function of the output of said means for measuring.
Claim 17
Dependent Claim
88 words
A machine tool system for calibrating the force deflection characteristics thereof comprising, a tool, an object firmly supported upon a base, means for moving said tool towards said object, means for sensing contact of said tool with said object, means for measuring deflection forces at a first tool position in contact with said object, means for measuring deflection forces at a second tool position in contact with said object and spaced from said means for determining deflection forces as a function of tool displacement between said separate positions.
Claim 18
Dependent Claim
88 words
A machine tool system for calibrating the force deflection characteristics thereof comprising, a tool, an object firmly supported upon a base, means for moving said tool towards said object, means for sensing contact of said tool with said object, means for measuring deflection forces at a first tool position in contact with said object, means for measuring deflection forces at a second tool position in contact with said object and spaced from said means for determining deflection forces as a function of tool displacement between said separate positions.
Claim 19
Dependent Claim
25 words
Apparatus in accordance with claim 13 wherein said means for moving drives said tool in a predetermined direction between said first and second tool position.
Claim 20
Dependent Claim
31 words
Apparatus in accordance with claim 13 wherein said means for moving drives said tool into contact with said object with deflection of said tool transverse to the axis of said tool.
Claim 21
Dependent Claim
25 words
Apparatus in accordance with claim 15 wherein said means for moving drives said tool to deflect transverse to the direction of travel of said tool.
Claim 22
Independent Claim
82 words
A method for operating a machine tool system for calibrating the force deflection characteristics thereof comprising: moving said tool towards an object firmly supported upon a base, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, and calculating deflection force as a function of tool displacement between said separated positions.
Claim 23
Independent Claim
82 words
A method for operating a machine tool system for calibrating the force deflection characteristics thereof comprising: moving said tool towards an object firmly supported upon a base, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, and calculating deflection force as a function of tool displacement between said separated positions.
Claim 24
Dependent Claim
57 words
A method in accordance with claim 17 including moving said tool in a predetermined direction between said first and second tool positions, driving said tool into contact with said object with deflection of said tool transverse to the axis of said tool and the ultimate direction of travel of said tool during a related subsequent cutting operation.
Claim 25
Dependent Claim
55 words
Apparatus in accordance with claim 13 including first means for measuring the actual distance of said tool from a starting position to contact with said object, second means for storing a predetermined offset value, and means for determining tool diametral dimension error as a function of values for said first means and said second means.
Claim 26
Independent Claim
89 words
A method for measuring the tool size of a tool with a machine tool, a tool in said machine tool, an object firmly supported upon a base secured to said machine tool, comprising moving said tool with machine tool to a predetermined position with said tool spaced from said object, driving said tool into contact with said object, measuring displacement of said tool between said predetermined position and the position at which said contact occurs, and calculating the tool size of said tool as a function of said displacement.
Claim 27
Independent Claim
89 words
A method for measuring the tool size of a tool with a machine tool, a tool in said machine tool, an object firmly supported upon a base secured to said machine tool, comprising moving said tool with machine tool to a predetermined position with said tool spaced from said object, driving said tool into contact with said object, measuring displacement of said tool between said predetermined position and the position at which said contact occurs, and calculating the tool size of said tool as a function of said displacement.
Claim 28
Independent Claim
92 words
A method of operating a machine tool system for calibrating the force deflection characteristics thereof in a system including, a tool, and an object firmly supported upon a base, the steps including moving said tool towards said object, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, and measuring deflection forces at a second tool position in contact with said object and spaced from said means for determining deflection forces as a function of tool displacement between said separate positions.
Claim 29
Independent Claim
92 words
A method of operating a machine tool system for calibrating the force deflection characteristics thereof in a system including, a tool, and an object firmly supported upon a base, the steps including moving said tool towards said object, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, and measuring deflection forces at a second tool position in contact with said object and spaced from said means for determining deflection forces as a function of tool displacement between said separate positions.
Claim 30
Dependent Claim
23 words
A method in accordance with claim 21 wherein said tool is moved in a predetermined direction between said first and second tool positions.
Claim 31
Dependent Claim
32 words
A method in accordance with claim 21 wherein involving moving said tool into contact with said object in a direction providing deflection of said tool transverse to the axis of said tool.
Claim 32
Dependent Claim
23 words
A method in accordance with claim 23 wherein said tool is moved to deflect transverse to the direction of travel of said tool.
Claim 33
Independent Claim
87 words
A method for operating a machine tool system for calibrating the force deflection characteristics thereof comprising: moving said tool towards an object firmly supported upon a base, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, and measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, whereby calculation of deflection force as a function of tool displacement between said separated positions can be performed.
Claim 34
Independent Claim
87 words
A method for operating a machine tool system for calibrating the force deflection characteristics thereof comprising: moving said tool towards an object firmly supported upon a base, sensing contact of said tool with said object, measuring deflection forces at a first tool position in contact with said object, and measuring deflection forces at a second tool position in contact with said object and spaced from said first tool position, whereby calculation of deflection force as a function of tool displacement between said separated positions can be performed.
Claim 35
Dependent Claim
57 words
A method in accordance with claim 25 including moving said tool in a predetermined direction between said first and second tool positions, driving said tool into contact with said object with deflection of said tool transverse to the axis of said tool and the ultimate direction of travel of said tool during a related subsequent cutting operation.
Claim 36
Dependent Claim
49 words
A method in accordance with claim 21 including first measuring the actual distance of said tool from a starting position to contact with said object, storing a predetermined offset value, and determining tool diametral dimension error as a function of values for said first measurement and said offset value.
Claim 37
Independent Claim
92 words
A method for measuring the tool size of a tool with a machine tool, a tool in said machine tool, an object firmly supported upon a base secured to said machine tool, comprising moving said tool with machine tool to a predetermined position with said tool spaced from said object, driving said tool into contact with said object, and measuring displacement of said tool between said predetermined position and the position at which said contact occurs, whereby the tool size of said tool can be calculated as a function of said displacement.
Claim 38
Independent Claim
92 words
A method for measuring the tool size of a tool with a machine tool, a tool in said machine tool, an object firmly supported upon a base secured to said machine tool, comprising moving said tool with machine tool to a predetermined position with said tool spaced from said object, driving said tool into contact with said object, and measuring displacement of said tool between said predetermined position and the position at which said contact occurs, whereby the tool size of said tool can be calculated as a function of said displacement.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |