US4533286A
Expired / Lapsed
US
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Tool compensation method
Assignee: Fanuc Corp
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Filing: 1982-03-30
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Granted: 1985-08-06
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Expires: 2002-03-30
Abstract
Abstract A tool compensation method for cutting a surface on a workpiece having a slanted surface. A radius at a final point is determined by a path computing unit using coordinates of the final cutting point and a tool height. Based on these values thus determined, coordinates of a final offset position, which is aligned with a tool center, is also computed. Corrective values in the directions of the X and Y axes are determined using the computed coordinates and coordinates of a starting offset position, to thereby correct the movement of the tool center.
Inventors
- 👤 Hajimu Kishi
- 👤 Masaki Seki
- 👤 Masashi Kawasumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:17
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/41; G05B2219/00; G05B2219/30; G05B2219/50; G05B2219/50282; G05B2219/50334; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896; Y10T409/30112; Y10T409/303752
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A tool compensation method for offsetting a tapered tool by a distance corresponding to a tool radius from a commanded tool path for cutting a workpiece, wherein the tool path has a varied depth relative to a work surface, comprising the following steps: (a) storing data defining (i) the inclination a° of a uniform taper of the tapered tool, and (ii) a radius r of the tapered tool at a given height h above the tip of the tool; (b) determining an offset value based on said data defining the inclination, said radius, and height; and (c) offsetting the tool according to said offset value to cut the workpiece, thereby utilizing a corrected tool position dependent upon the depth of which the tool is infed.
Claim 2
Dependent Claim
125 words
A tool compensation method for offsetting a tapered tool by a distance corresponding to a tool radius from a commanded tool path for cutting a workpiece, wherein the tool path has a varied depth relative to a work surface, comprising the following steps: (a) storing data defining (i) the inclination a° of a uniform taper of the tapered tool, and (ii) a radius r of the tapered tool at a given height h above the tip of the tool; (b) determining an offset value based on said data defining the inclination, said radius, and height; and (c) offsetting the tool according to said offset value to cut the workpiece, thereby utilizing a corrected tool position dependent upon the depth of which the tool is infed.
Claim 3
Dependent Claim
42 words
A tool compensation method according to claim 1, wherein a tool radius r' at a position Z from the tip of the tool is computed by r'=r+(Z-h) tan a= and wherein the computed tool radius r' is employed as said offset value.
Claim 4
Dependent Claim
18 words
A tool compensation method according to claim 1, wherein the tool path is corrected by said offset value.
Claim 5
Dependent Claim
18 words
The tool compensation method according to claim 1, wherein the data is stored in a plurality of registers.
Claim 6
Dependent Claim
18 words
The tool compensation method according to claim 2, wherein the data is stored in a plurality of registers.
Claim 7
Dependent Claim
18 words
The tool compensation method according to claim 3, wherein the data is stored in a plurality of registers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |