US3597933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote grinding head
Assignee: Atomic Energy of Canada Ltd AECL
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Filing: 1968-09-17
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Granted: 1971-08-10
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Expires: 1988-09-17
Abstract
Abstract There is provided a apparatus for the automatic compensation for deterioration or reduction in diameter of a cutting tool, such as a grinding wheel, whereby machining may be resumed, without further adjustment after such compensation. The invention is particularly suitable for remote operation under hazardous conditions such as might be experienced in highly radioactive environments.
Inventors
- 👤 Cyril J Astill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:51
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/18; B24B27/00; B24B41/00; B24B41/04; B24B41/047
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
211 words
A toolhead for a machine tool having means defining a cylindrical cutting surface, said head having integral redressing means for precisely compensating for wear on the cylindrical cutting surface of the tool, said head comprising: a. shaft and bearing means providing an axis about which said tool may rotate, b. slide means supporting said bearing, said slide means including freely rotatable pinion thereon, c. a dressing device, d. slidable support means for said dressing device whereby the dressing device is engageable with the cylindrical cutting surface of said tool and whereby the dressing device is constrained to move along an axis which is parallel to and in the same plane as the said shaft, e. first rack means rigidly attached to said support means for said dressing device, said first rack means meshing with said pinion, f. second rack means rigidly attached to said tool head said second rack means meshing with said pinion, and, g. means for moving the axis of the said shaft by a determined distance X, the movement occurring in the said plane whereby the said pinion rolls on said second rack and whereby the said first rack and said dressing device move, by an accurately determined distance 2X, the dressing device moving toward the said tool.
Claim 2
Dependent Claim
211 words
A toolhead for a machine tool having means defining a cylindrical cutting surface, said head having integral redressing means for precisely compensating for wear on the cylindrical cutting surface of the tool, said head comprising: a. shaft and bearing means providing an axis about which said tool may rotate, b. slide means supporting said bearing, said slide means including freely rotatable pinion thereon, c. a dressing device, d. slidable support means for said dressing device whereby the dressing device is engageable with the cylindrical cutting surface of said tool and whereby the dressing device is constrained to move along an axis which is parallel to and in the same plane as the said shaft, e. first rack means rigidly attached to said support means for said dressing device, said first rack means meshing with said pinion, f. second rack means rigidly attached to said tool head said second rack means meshing with said pinion, and, g. means for moving the axis of the said shaft by a determined distance X, the movement occurring in the said plane whereby the said pinion rolls on said second rack and whereby the said first rack and said dressing device move, by an accurately determined distance 2X, the dressing device moving toward the said tool.
Claim 3
Dependent Claim
66 words
A toolhead as defined in claim 1, wherein said means slidably supporting said dressing device is a shaft upon which the dressing device is mounted, a portion of said shaft being threaded for engagement with an internally threaded member which is constrained against movement along the axis of its thread and supported for rotation, said shaft incorporating means inhibiting rotation about the axis of the shaft.
Claim 4
Dependent Claim
42 words
A toolhead as defined in claim 1 further including means for selectively moving the head bodily away from its machining position prior to tool redressing and to returning and to accurately repositioning the head in its original position after a redressing operation.
Claim 5
Dependent Claim
48 words
A toolhead as defined in claim 8 wherein the said means for selectively moving the head comprises an inclined plane and a follower resting on the inclined plane, the latter and the follower being movable with respect to each other, the movement being provided by a linear actuator.
Claim 6
Dependent Claim
19 words
A toolhead as defined in claim 2 wherein said internally threaded member is mechanically coupled to a prime mover.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |