US3845546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool change mechanism
Assignee: Rheinmetall Air Defence AG
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Filing: 1972-09-18
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Granted: 1974-11-05
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Expires: 1992-09-18
Abstract
Abstract A tool change mechanism comprising a tool holder and a clamp with arms for gripping same. The tool holder possesses a flange with three recesses at the periphery of the flange with which engage the arms of the clamp. The recesses are formed by grooves directed perpendicular to the axis of the tool holder, and each arm engages with two grooves of the flange.
Inventors
- 👤 A Rutschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/155; B23Q3/1552; B23Q3/1554; B23Q2003/155404; Y; Y10; Y10S; Y10S279/00; Y10S279/90; Y10T; Y10T483/00; Y10T483/17; Y10T483/1733; Y10T483/1736
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
186 words
A tool change mechanism comprising an axially extending tool holder, a clamp with arms for gripping the tool holder, said tool holder possessing a flange equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each arm engaging in two grooves of the flange, substantially linear extending webs at the inside of the arms, the length of said webs being smaller than one-half of the length of each of the grooves and the cross-section of said webs being accommodated to the cross-section of the grooves, a pivot bolt about which the arms of the clamp are pivotably arranged, aligned blind hole bores provided at the arms, bolts bearing against one another arranged in said aligned blind hole bores, spring means for loading said bolts, the clamp further possessing rearwardly directed arms with respect to the axis of rotation defined by said pivot bolt, bolts guided at substantially pot-shaped sleeves against which bear said rearwardly directed arms, a rotatable pin having a substantially rectangular-shaped cross-section against which bear said pot-shaped sleeves.
Claim 2
Dependent Claim
186 words
A tool change mechanism comprising an axially extending tool holder, a clamp with arms for gripping the tool holder, said tool holder possessing a flange equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each arm engaging in two grooves of the flange, substantially linear extending webs at the inside of the arms, the length of said webs being smaller than one-half of the length of each of the grooves and the cross-section of said webs being accommodated to the cross-section of the grooves, a pivot bolt about which the arms of the clamp are pivotably arranged, aligned blind hole bores provided at the arms, bolts bearing against one another arranged in said aligned blind hole bores, spring means for loading said bolts, the clamp further possessing rearwardly directed arms with respect to the axis of rotation defined by said pivot bolt, bolts guided at substantially pot-shaped sleeves against which bear said rearwardly directed arms, a rotatable pin having a substantially rectangular-shaped cross-section against which bear said pot-shaped sleeves.
Claim 3
Dependent Claim
35 words
The tool change mechanism defined in claim 1, wherein the bolts guided at the pot-shaped sleeves possess collars bearing via a respective associated package of plate springs upon the floor of the associated pot-shaped sleeve.
Claim 4
Dependent Claim
16 words
The tool change mechanism defined in claim 1, wherein each of the grooves possess bevelled sidewalls.
Claim 5
Dependent Claim
63 words
An axially extending tool holder possessing a flange adapted to be supported by a tool gripper said flange being equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each groove having a base, and the bases of the grooves, when projected, intersect to form a triangle.
Claim 6
Dependent Claim
63 words
An axially extending tool holder possessing a flange adapted to be supported by a tool gripper said flange being equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each groove having a base, and the bases of the grooves, when projected, intersect to form a triangle.
Claim 7
Dependent Claim
70 words
An axially extending tool holder possessing a flange adapted to be engaged by a tool gripper, said flange being equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each groove having a base and the bases of the grooves, when projected, intersecting to form an isosceles triangle and each groove possessing bevelled sidewalls.
Claim 8
Dependent Claim
70 words
An axially extending tool holder possessing a flange adapted to be engaged by a tool gripper, said flange being equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each groove having a base and the bases of the grooves, when projected, intersecting to form an isosceles triangle and each groove possessing bevelled sidewalls.
Claim 9
Dependent Claim
111 words
A tool change mechanism including an axially extending tool holder, a clamp with at least two arms for gripping the tool holder, said tool holder possessing a flange transverse to the tool holder axis equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each groove having a base, the bases of the grooves each being located at a side of a triangle having two equal sides, two arms of the clamp engaging the same groove and each arm further engaging in two grooves of the flange lying on said equal sides of the triangle.
Claim 10
Dependent Claim
111 words
A tool change mechanism including an axially extending tool holder, a clamp with at least two arms for gripping the tool holder, said tool holder possessing a flange transverse to the tool holder axis equipped with three recesses at its periphery, said recesses being formed by grooves lying in a plane substantially perpendicular to the axis of the tool holder, each groove having a base, the bases of the grooves each being located at a side of a triangle having two equal sides, two arms of the clamp engaging the same groove and each arm further engaging in two grooves of the flange lying on said equal sides of the triangle.
Claim 11
Dependent Claim
121 words
The tool change mechanism defined in claim 6, including substantially linear extending webs at the inside of the arms, the length of said webs being smaller than one-half at the length of each of the grooves, a pivot bolt about which the arms of the clamp are pivotably arranged, aligned blind hole bores provided at the arms, bolts bearing against one another arranged in said aligned blind hole bores, spring means for loading said bolts, said clamp further possesses rearwardly directed arms with respect to the axis of rotation defined by said pivot bolt, bolts guided at substantially pot-shaped sleeves against which bear said rearwardly directed arms, a rotatable pin having a substantially rectangular-shaped cross-section against which bear said pot-shaped sleeves.
Claim 12
Dependent Claim
35 words
The tool change mechanism defined in claim 7, wherein the bolts guided at the pot-shaped sleeves possess collars bearing via a respective associated package of plate springs upon the floor of the associated pot-shaped sleeve.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |