Patent US3741023A successfully refreshed from Google Patents.
US3741023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool changing mechanism for a machine tool
Assignee: BW WEBER VERWALTUNGSGMBH
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Filing: 1971-05-24
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Granted: 1973-06-26
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Expires: 1991-05-24
Abstract
Abstract An improvement in a tool changing mechanism of the type as disclosed in the U.S. Pat. No. 3,551,984 according to which two laterally adjacent gripping devices are alternately movable back and forth in a common guide element along separate guideways which are partly curved toward each other so that the gripping heads of both devices are alternately movable to the same point to pick up or deliver different tools at identical positions and the paths of the last part of the forward movements of both gripping devices extend nearly parallel and closely adjacent to each other and even the rear straight parts of the guideways may be spaced at a relatively small distance from each other, thus permitting the common guide element to be made of a narrow width.
Inventors
- 👤 H Goebel
- 👤 E Raiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:04
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/155; B23Q3/1552; B23Q3/1554; B23Q2003/155414; B23Q2003/155421; B23Q2003/155449; Y; Y10; Y10S; Y10S483/00; Y10S483/902; Y10T; Y10T483/00; Y10T483/17; Y10T483/1733; Y10T483/1748; Y10T483/1752; Y10T483/1755; Y10T483/1767; Y10T483/1769; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
285 words
A tool-changing mechanism for a machine tool having a tool magazine for supporting different tools and having a tool spindle, comprising two gripping members for exchanging a tool, each gripping member having a gripping head at its front end adapted to grip a tool, said gripping members being adapted to remove a selected tool from said magazine and also to remove a tool from said tool spindle and then to insert these tools into said tool spindle and into said magazine, respectively, a common guide member for said gripping members, guide members for guiding said guide member so as to be movable between a magazine position adjacent to said magazine and a spindle position adjacent to said tool spindle, means for moving said guide member along said guide means from one of said positions to the other, two separate guideways disposed in said guide member along which said two gripping members are slidable independently of each other, said two guideways on said guide member extend in directions intersecting at a common point of action of said heads of said gripping members which point of action in said magazine position and in said spindle position of said guide elements coincides with the position of a tool in said magazine and in said tool spindle, respectively, means for moving said gripping members along said guideways between a first position, in which said heads of said gripping members are remote from said point of action, and a second position in which said heads of said gripping members are adapted to grip a tool, the latter position coinciding with said point of action, the improvement residing in that at least a part of one of said guideways is curved.
Claim 2
Dependent Claim
285 words
A tool-changing mechanism for a machine tool having a tool magazine for supporting different tools and having a tool spindle, comprising two gripping members for exchanging a tool, each gripping member having a gripping head at its front end adapted to grip a tool, said gripping members being adapted to remove a selected tool from said magazine and also to remove a tool from said tool spindle and then to insert these tools into said tool spindle and into said magazine, respectively, a common guide member for said gripping members, guide members for guiding said guide member so as to be movable between a magazine position adjacent to said magazine and a spindle position adjacent to said tool spindle, means for moving said guide member along said guide means from one of said positions to the other, two separate guideways disposed in said guide member along which said two gripping members are slidable independently of each other, said two guideways on said guide member extend in directions intersecting at a common point of action of said heads of said gripping members which point of action in said magazine position and in said spindle position of said guide elements coincides with the position of a tool in said magazine and in said tool spindle, respectively, means for moving said gripping members along said guideways between a first position, in which said heads of said gripping members are remote from said point of action, and a second position in which said heads of said gripping members are adapted to grip a tool, the latter position coinciding with said point of action, the improvement residing in that at least a part of one of said guideways is curved.
Claim 3
Dependent Claim
48 words
A tool-changing mechanism as defined in claim 1, in which due to the curvature of said guideway, said gripping members are movable nearly parallel and closely adjacent to each other during the first and last part of their reciprocating movements out of and into said first position, respectively.
Claim 4
Dependent Claim
21 words
A tool-changing mechanism as defined in claim 1, in which said gripping members comprise guide means movably engaging into said guideways.
Claim 5
Dependent Claim
34 words
A tool-changing mechanism as defined in claim 3, wherein each gripping member has a front guide means adjacent said gripping head and a rear guide means which engage separate front and rear guideways, respectively.
Claim 6
Dependent Claim
52 words
A tool-changing mechanism as defined in claim 4, wherein said front guideway and said rear guideway for each of said gripping members merge into one another, and wherein each guide means comprises a roller, each front roller and its associated guideway being wider than the rear guide roller and its associated guideway.
Claim 7
Dependent Claim
39 words
A tool-changing mechanism as defined in claim 5, wherein eaCh rear guide roller is located near the rear end of the respective gripping member, a fluid-operated drive means acting upon the rear guide roller by way of a pin.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |