US3962777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool clamping device for multiple-operation machines
Assignee: INSTITUTE ZA METALLOOBRABORVASHTI MACHINI
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Filing: 1974-12-19
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Granted: 1976-06-15
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Expires: 1994-12-19
Abstract
Abstract A tool clamping device for multiple-operation machines or machining centers. The device has a self-blocking fork for selectively securing a tool on a tool changing device or autooperator, the fork being in the shape of jaws which partially embrace the shank of a tool. In both arms of the fork there are profile grooves in which there are located pivotally mounted blocking pins. Between the blocking pins and the bottom wall of the grooves there are springs for constantly pressing the blocking pins toward their blocking position. The blocking pins are L-shaped, and in their blocking position the end of one arm of each protrudes outwardly in position to be engaged by the face keys of the spindle of the machine in the operation of removing a tool from the spindle of the machine.
Inventors
- 👤 Nikola Dimov Stoilov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/04; B23Q7/043; B23Q3/00; B23Q3/155; B23Q3/1552; B23Q3/1554; B23Q2003/155404; B23Q2003/155407; B23Q2003/155414; B23Q2003/155421; B23Q2003/155449; Y; Y10; Y10S; Y10S279/00; Y10S279/90; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5105; Y10T29/5107; Y10T483/00; Y10T483/17; Y10T483/1733; Y10T483/1736; Y10T483/1743; Y10T483/1748
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
In the combination of a multiple-operation machine having a spindle with a pair of face keys and a tool changer therefor, an improved tool clamping device, comprising a self-blocking fork having a pair of arms adapted partially to embrace the shanks of a tool, wherein in both arms of the fork there being profile grooves, blocking pins pivotally mounted in respective ones of the grooves and springs between the blocking pins and the bottom wall of the grooves for continually pressing the blocking pins toward their tool blocking positions, the blocking pins having portions which are so disposed as to be engageable by the face keys on the spindle of the multiple-operation machine upon the approach of a spindle to the tool-changing position of the tool clamping device, thereby to thrust the blocking pins to the tool unblocking position.
Claim 2
Dependent Claim
139 words
In the combination of a multiple-operation machine having a spindle with a pair of face keys and a tool changer therefor, an improved tool clamping device, comprising a self-blocking fork having a pair of arms adapted partially to embrace the shanks of a tool, wherein in both arms of the fork there being profile grooves, blocking pins pivotally mounted in respective ones of the grooves and springs between the blocking pins and the bottom wall of the grooves for continually pressing the blocking pins toward their tool blocking positions, the blocking pins having portions which are so disposed as to be engageable by the face keys on the spindle of the multiple-operation machine upon the approach of a spindle to the tool-changing position of the tool clamping device, thereby to thrust the blocking pins to the tool unblocking position.
Claim 3
Dependent Claim
72 words
The tool clamping device according to claim 1, wherein the blocking pins are L-shaped, a first arm of each of the pins extending generally parallel to the machine spindle when the tool clamping device is disposed in the tool changing position, the outer free end of the first arm of each blocking pin protruding outwardly of the device so as to be engageable by a respective face key on the machine spindle.
Claim 4
Dependent Claim
27 words
The tool clamping device according to claim 2, wherein the blocking pins are L-shaped and are pivotally mounted adjacent the outer end of the second arm thereof.
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) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |