Patent US5313400A successfully refreshed from Google Patents.
US5313400A
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US
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Tracing method
Assignee: Fanuc Corp
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Filing: 1993-08-09
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Granted: 1994-05-17
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Expires: 2013-08-09
Abstract
Abstract A tracing operation by designating a region is performed after a wire limit. Tracing line segments (2a, 2b, 2c) parallel to the wire limit (1)are found connecting a plurality of points. The tracing operation is performed by moving a stylus on a path along the tracing line segments (2a, 2b, 2c), whereby a tracing region determined by a complex wire limit can be accurately traced.
Inventors
- 👤 Osamu Tsukamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:53
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
279 words
A method of carrying out a tracing operation in a region designated by a wire limit defined by limit line segments connecting a plurality of limit points, comprising the steps of: (a) determining a first limit point, nearest to a first tracing point, from among the limit points; (b) setting a pick feed angle relative to a first coordinate axis; (c) determining a second tracing point lying on a straight line passing through a second limit point adjacent the first limit point and forming the pick feed angle with the first coordinate axis, so that a first tracing line segment connecting the first and second tracing points is parallel to a first limit line segment connecting the first and second limit points; (d) tracing a stylus in a first tracing direction along the first tracing line segment; (e) repeating steps (c) and (d) until the stylus reaches an end point of a first tracing path; (f) performing a pick feed to move the stylus a predetermined distance in a pick feed direction along a first pick feed line forming the pick feed angle with the first coordinate axis, to position the stylus at a new tracing start point; (g) repeating steps (c)-(f) to trace the stylus along a second tracing path in a second direction opposite to the first direction until an end point of the second tracing path is reached and the pick feed is performed in the pick feed direction along a second pick feed line parallel to the first pick feed line; and (h) repeating steps (c)-(g) alternating the first and second tracing direction and the pick feed along the first and second pick feed lines.
Claim 2
Independent Claim
279 words
A method of carrying out a tracing operation in a region designated by a wire limit defined by limit line segments connecting a plurality of limit points, comprising the steps of: (a) determining a first limit point, nearest to a first tracing point, from among the limit points; (b) setting a pick feed angle relative to a first coordinate axis; (c) determining a second tracing point lying on a straight line passing through a second limit point adjacent the first limit point and forming the pick feed angle with the first coordinate axis, so that a first tracing line segment connecting the first and second tracing points is parallel to a first limit line segment connecting the first and second limit points; (d) tracing a stylus in a first tracing direction along the first tracing line segment; (e) repeating steps (c) and (d) until the stylus reaches an end point of a first tracing path; (f) performing a pick feed to move the stylus a predetermined distance in a pick feed direction along a first pick feed line forming the pick feed angle with the first coordinate axis, to position the stylus at a new tracing start point; (g) repeating steps (c)-(f) to trace the stylus along a second tracing path in a second direction opposite to the first direction until an end point of the second tracing path is reached and the pick feed is performed in the pick feed direction along a second pick feed line parallel to the first pick feed line; and (h) repeating steps (c)-(g) alternating the first and second tracing direction and the pick feed along the first and second pick feed lines.
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) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |