US4999784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axis changeover apparatus
Assignee: Fanuc Corp
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Filing: 1988-08-18
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Granted: 1991-03-12
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Expires: 2008-08-18
Abstract
Abstract An axis changeover apparatus according to the invention changes axes of movement of a machine tool having axes with the same direction of movement, such as a cross rail axis and quill axis. A check is performed to determine the commanded strokes along axes (Z and W axes) from machining commands supplied by an NC command tape (1). If a move command has a commanded stroke which exceeds a set limit stroke value, the portion of the commanded stroke which exceeds the value is converted into a commanded stroke along the other axis having the same direction of movement, thereby elongating the apparent stroke.
Inventors
- 👤 Hideaki Kawamura
- 👤 Kentaro Fujibayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:56
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/195; G05B2219/00; G05B2219/30; G05B2219/41; G05B2219/41457; G05B2219/42; G05B2219/42232
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
An axis changeover apparatus for changing over axes to be program driven on a machine tool having a drive mechanism for driving a plurality of axes in the same direction based on a commanded value, comprising: control means for controlling movement of a large stroke axis having a large allowable stroke and a small stroke axis, parallel to the large stroke axis, having a small allowable stroke; detection means for determining if the commanded value exceeds the small allowable stroke; and conversion means for converting a portion of the commanded value in excess of the small allowable stroke into a changeover command value along the large stroke axis having the large allowable stroke.
Claim 2
Dependent Claim
113 words
An axis changeover apparatus for changing over axes to be program driven on a machine tool having a drive mechanism for driving a plurality of axes in the same direction based on a commanded value, comprising: control means for controlling movement of a large stroke axis having a large allowable stroke and a small stroke axis, parallel to the large stroke axis, having a small allowable stroke; detection means for determining if the commanded value exceeds the small allowable stroke; and conversion means for converting a portion of the commanded value in excess of the small allowable stroke into a changeover command value along the large stroke axis having the large allowable stroke.
Claim 3
Dependent Claim
38 words
An axis changeover apparatus according to claim 1, wherein said conversion means comprises: pulse distributing means for distributing commanded distributed pulses along a predetermined axis; and changeover means for changing over the distributed pulses exceeding the allowable stroke.
Claim 4
Dependent Claim
36 words
An axis changeover apparatus according to claim 1, wherein the small stroke axis is a quill rail axis of the machine tool, and the large stroke axis is a cross rail axis of the machine tool.
Claim 5
Independent Claim
132 words
A method for changing over axes used to position a machine tool having a drive mechanism fordriving the machine tool along a large stroke axis and a small stroke axis, parallel to the large stroke axis, said method comprising the steps of: (a) distributing a command value to produce movement of the machine tool along the small stroke axis; (b) determining if the command value exceeds a small allowable stroke of the small stroke axis; (c) producing, based upon said determining of step (b), a changeover command value for the large stroke axis by reducing the command value by the small allowable stroke; and (d) producing, based upon said determining of step (b), a modified command value for the small stroke axis by reducing the command value by the changeover command value.
Claim 6
Independent Claim
132 words
A method for changing over axes used to position a machine tool having a drive mechanism fordriving the machine tool along a large stroke axis and a small stroke axis, parallel to the large stroke axis, said method comprising the steps of: (a) distributing a command value to produce movement of the machine tool along the small stroke axis; (b) determining if the command value exceeds a small allowable stroke of the small stroke axis; (c) producing, based upon said determining of step (b), a changeover command value for the large stroke axis by reducing the command value by the small allowable stroke; and (d) producing, based upon said determining of step (b), a modified command value for the small stroke axis by reducing the command value by the changeover command value.
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) | 1994-03-11 | 1994-09-10 | 1995-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-11 | 1998-09-10 | 1999-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-11 | 2002-09-10 | 2003-03-12 | $7700.00 | Window Closed / Lapsed |