US4982336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracer control apparatus
Assignee: Fanuc Corp
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Filing: 1988-10-26
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Granted: 1991-01-01
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Expires: 2008-10-26
Abstract
Abstract It is arranged for a tracer head (TC) to be rotatable in a rotational direction which adopts, as an axis of rotation, an axis parallel to an axis (e.g., the Y axis) which does not form a tracing plane. When a hollow (HL) having the vertical wall (SL) is traced, the tracer head (TC) is rotated so as not to interfer with a model (MDL), an angle of rotation (β) in the rotational direction is monitored, axial displacements (ε x , ε z ) along two axes (X, Z axes) other than the axis of rotation are corrected based on the angle of rotation (β), and tracer control is performed using each of the axial displacements obtained by the correction.
Inventors
- 👤 Hitoshi Aramaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:25
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
A tracer control apparatus for tracing a model surface by computing feed rate components along respective axes in a tracer control plane based on a difference between a reference displacement and a resultant displacement, which is the result of combining axial displacements from a tracer head, and a tracing direction, characterized by comprising: rotating means for rotating the tracer head in a direction which adopts, as an axis of rotation, an axis parallel to an axis which does not form said tracer control plane; means for monitoring an angle of rotation in said rotational direction; means for correcting, based on said angle of rotation, axial displacements along two axes forming the tracer control plane; and means for performing tracer control using each of the axial displacements obtained by the correction.
Claim 2
Dependent Claim
130 words
A tracer control apparatus for tracing a model surface by computing feed rate components along respective axes in a tracer control plane based on a difference between a reference displacement and a resultant displacement, which is the result of combining axial displacements from a tracer head, and a tracing direction, characterized by comprising: rotating means for rotating the tracer head in a direction which adopts, as an axis of rotation, an axis parallel to an axis which does not form said tracer control plane; means for monitoring an angle of rotation in said rotational direction; means for correcting, based on said angle of rotation, axial displacements along two axes forming the tracer control plane; and means for performing tracer control using each of the axial displacements obtained by the correction.
Claim 3
Dependent Claim
74 words
A tracer control apparatus according to claim 1, characterized in that said displacement correcting means computes corrected displacements ε x ', ε z ' along respective axes in accordance with the following equations: ε.sub.x '=ε.sub.z sinβ+ε.sub.x cosβ ε.sub.z '=ε.sub.z cosβ-ε.sub.x sinβ where β represents said angle of rotation, two axes forming the tracer control plane are X and Z axes, and ε x , ε z represent displacements along the X and Z axes.
Claim 4
Dependent Claim
21 words
A tracer control apparatus according to claim 2, characterized by having an operator's panel for commanding rotation of the tracer head.
Claim 5
Dependent Claim
38 words
A tracer control apparatus according to claim 2, characterized by having inclination detecting means for commanding rotation of the tracer head upon detecting that a change in a distance to the model surface has exceeded a set 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) | 1993-12-31 | 1994-07-02 | 1995-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-31 | 1998-07-02 | 1999-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-31 | 2002-07-02 | 2003-01-01 | $7700.00 | Window Closed / Lapsed |