US4942350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of creating NC data for grooving
Assignee: Fanuc Corp
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Filing: 1988-08-26
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Granted: 1990-07-17
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Expires: 2008-08-26
Abstract
Abstract NC data for grooving are created by inputting a groove shape (GR) which lies on a three-dimensional curved surface as well as a groove-depth specifying curve (GRC) which indicates a relationship between a distance d from one end and groove depth hk of a point at this distance, obtaining the distance dk from one end of the groove-depth specifying curve (GRC) in accordance with dk=lk·Lj/Li where Li represents the total length of the groove shape, lk the distance from one end of the groove shape and Lj the total length of the groove-depth specifying curve (GRC), obtaining, from the groove-depth specifying curve, the depth hk at the distance dk from the abovementioned one end, and adopting the groove depth hk as groove depth of a point at the distance lk from the one end of the groove shape (GR).
Inventors
- 👤 Masaki Seki
- 👤 Koji Samukawa
- 👤 Osamu Hanaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:24
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/4093; G05B19/40937; G05B2219/00; G05B2219/30; G05B2219/50; G05B2219/50213; Y; Y02; Y02P; Y02P90/00; Y02P90/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
150 words
A method of creating NC data for grooving a three-dimensional curved surface, comprising the steps of: specifying a groove shape which lies on the three-dimensional curved surface; specifying a groove-depth specifying curve defining a relationship between a distance dk measured from one end of said groove shape and a groove depth hk of a point at said distance dk; obtaining said distance dk in accordance with dk=lk·Lj/Li where Li represents a total length of said groove shape, lk represents a distance from said one end of said groove shape and Lj represents a total length of said groove-depth specifying curve; obtaining, based on said groove-depth specifying curve, said groove depth hk at said distance dk; and creating NC data for said grooving at said distance dk based on said groove depth identifying a groove depth of a point at the distance lk from said one end of said groove shape.
Claim 2
Independent Claim
150 words
A method of creating NC data for grooving a three-dimensional curved surface, comprising the steps of: specifying a groove shape which lies on the three-dimensional curved surface; specifying a groove-depth specifying curve defining a relationship between a distance dk measured from one end of said groove shape and a groove depth hk of a point at said distance dk; obtaining said distance dk in accordance with dk=lk·Lj/Li where Li represents a total length of said groove shape, lk represents a distance from said one end of said groove shape and Lj represents a total length of said groove-depth specifying curve; obtaining, based on said groove-depth specifying curve, said groove depth hk at said distance dk; and creating NC data for said grooving at said distance dk based on said groove depth identifying a groove depth of a point at the distance lk from said one end of said groove shape.
Claim 3
Dependent Claim
52 words
A method of creating NC data for grooving according to claim 1, further comprising the steps of: selecting said total length Li to represent a total length of said groove shape projected onto a predetermined plane; and selecting said distance lk to represent a distance from one end of said projected shape.
Claim 4
Dependent Claim
36 words
A method of creating NC data for grooving according to claim 2, storing a plurality of groove-depth specifying curves; and specifying a groove-depth specifying curve by selecting a predetermined one of the stored groove-depth specifying curves.
Claim 5
Dependent Claim
48 words
A method of creating NC data for grooving the three-dimensional curved surface with a tool according to claim 2, further comprising the step of: performing grooving in accordance with said NC data so that a distal end of the tool is lowered by hk at said distance lk.
Claim 6
Dependent Claim
59 words
A method of creating NC data for grooving according to claim 2, further comprising the step of: performing grooving in accordance with said NC data so that the tool is oriented normal to the three dimensional curved surface by simultaneous five-axis control, and so that a distal end of the tool is lowered by hk along the normal direction.
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) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |