Patent US3703113A successfully refreshed from Google Patents.
US3703113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-change device for clamping apparatus on turning machines
Assignee: Georg Fischer AG
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Filing: 1971-06-18
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Granted: 1972-11-21
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Expires: 1991-06-18
Abstract
Abstract A quick change clamping device for mills, lathes or other turning machines in which a first clamping flange is fixedly attached to, or formed on, the hub of the machine, the first flange being provided with axially extending parallel holes. A second flange of annular configuration is provided with a plurality of axially extending clamping pins which are capable of gripping the second flange, extending into the holes of the first flange, and which are notched to receive a clamping ring. The clamping ring surrounds the first flange and extends inwardly therethrough. Angularly spaced openings permit the clamping pins to be inserted after which the clamping ring is rotated, operating against camming surfaces to pull the second plate firmly against the first, whereupon the clamping ring is tightened by one or more clamping bolts mounted therein. The apparatus is advantageous in that it can be operated rapidly and requires very little time and substantially no alignment for proper operation.
Inventors
- 👤 Armin Feisel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:39
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/12; Y; Y10; Y10S; Y10S279/00; Y10S279/904; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17461; Y10T403/00; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/7066; Y10T403/7067; Y10T403/7069; Y10T409/00; Y10T409/30; Y10T409/309576; Y10T409/309912; Y10T82/00; Y10T82/25; Y10T82/2552; Y10T82/2562
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
148 words
A clamping apparatus for removably connecting work units to the rotatable spindle of a turning machine comprising the combination of a first clamping flange attached to the nose of the turning machine spindle, said first clamping flange having a plurality of axially extending parallel bores therein, said bores being angularly spaced about a circle; a second clamping flange, clamping pins carried by said second flange in positions to enter said bores, each of said pins having a clamping groove; said first clamping flange having a radially inwardly extending annular groove intersecting said bores, said groove having an inclined surface; a clamping ring in said groove; means for decreasing the radius of said ring, said ring having a first surface inclined for contact with the inclined surface of said groove to move the ring axially, and a second surface to engage the grooves of and axially move said pins.
Claim 2
Dependent Claim
148 words
A clamping apparatus for removably connecting work units to the rotatable spindle of a turning machine comprising the combination of a first clamping flange attached to the nose of the turning machine spindle, said first clamping flange having a plurality of axially extending parallel bores therein, said bores being angularly spaced about a circle; a second clamping flange, clamping pins carried by said second flange in positions to enter said bores, each of said pins having a clamping groove; said first clamping flange having a radially inwardly extending annular groove intersecting said bores, said groove having an inclined surface; a clamping ring in said groove; means for decreasing the radius of said ring, said ring having a first surface inclined for contact with the inclined surface of said groove to move the ring axially, and a second surface to engage the grooves of and axially move said pins.
Claim 3
Dependent Claim
148 words
A clamping apparatus for removably connecting work units to the rotatable spindle of a turning machine comprising the combination of a first clamping flange attached to the nose of the turning machine spindle, said first clamping flange having a plurality of axially extending parallel bores therein, said bores being angularly spaced about a circle; a second clamping flange, clamping pins carried by said second flange in positions to enter said bores, each of said pins having a clamping groove; said first clamping flange having a radially inwardly extending annular groove intersecting said bores, said groove having an inclined surface; a clamping ring in said groove; means for decreasing the radius of said ring, said ring having a first surface inclined for contact with the inclined surface of said groove to move the ring axially, and a second surface to engage the grooves of and axially move said pins.
Claim 4
Dependent Claim
148 words
A clamping apparatus for removably connecting work units to the rotatable spindle of a turning machine comprising the combination of a first clamping flange attached to the nose of the turning machine spindle, said first clamping flange having a plurality of axially extending parallel bores therein, said bores being angularly spaced about a circle; a second clamping flange, clamping pins carried by said second flange in positions to enter said bores, each of said pins having a clamping groove; said first clamping flange having a radially inwardly extending annular groove intersecting said bores, said groove having an inclined surface; a clamping ring in said groove; means for decreasing the radius of said ring, said ring having a first surface inclined for contact with the inclined surface of said groove to move the ring axially, and a second surface to engage the grooves of and axially move said pins.
Claim 5
Dependent Claim
21 words
A quick-change device according to claim 1 wherein said clamping ring includes at least one pivotable joint and a clamping bolt.
Claim 6
Dependent Claim
19 words
A quick-change device according to claim 1 wherein said first clamping flange is removably connected to the spindle nose.
Claim 7
Dependent Claim
18 words
A quick-change device according to claim 1 wherein said first clamping flange is integral with the spindle nose.
Claim 8
Dependent Claim
48 words
A quick-change device according to claim 1 wherein said clamping ring is divided, wherein said means for decreasing the radius of said ring includes a clamping bolt and wherein a compression spring is arranged concentrically with said clamping bolt at the point where the clamping ring is divided.
Claim 9
Dependent Claim
30 words
A quick-change device according to claim 1 wherein said clamping ring is provided with recesses for the passage of the clamping pins on the same radius as the said bores.
References Cited (Backward Citations)
US1961605A
Cited
DE833577C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |