US3880025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool for the machining of shafts
Assignee: GFM Gesellschaft fuer Fertigungstechnik und Maschinenbau AG
•
Filing: 1974-05-22
•
Granted: 1975-04-29
•
Expires: 1994-05-22
Abstract
Abstract The machine tool comprises a longitudinal guide, workpieceholding means for holding a workpiece in a fixed position, in which the longitudinal axis of said workpiece is parallel to said longitudinal guide, a tool slide assembly, which is movable along said longitudinal guide and comprises a compound rest, which consists of two slides, which are movable relative to each other in directions which are normal to each other and transverse to said guide, an annular tool, which has inwardly facing cutting means and is carried by said compound rest and adapted to surround a workpiece held by said workpiece-holding means, means for revolving said tool around said workpiece, and means for coordinating the relative movements of said slides.
Inventors
- 👤 Bruno Kralowetz
- 👤 Robert Obtresal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:39
CPC Classifications
B; B23; B23Q; B23Q27/00; B23C; B23C1/00; B23C1/06; B23C3/00; B23C3/06; B23C2210/00; B23C2210/50; B23C2210/503; B23C2220/00; B23C2220/68; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306664; Y10T409/307448; Y10T409/30756; Y10T409/307616; Y10T82/00; Y10T82/19
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
A machine tool for the machining of shafts, which comprises a longitudinal guide, workpiece-holding means for holding a workpiece in a fixed position, in which the longitudinal axis of said workpiece is parallel to said longitudinal guide, a tool slide assembly, which is movable along said longitudinal guide and comprises a compound rest, which consists of two slides, which are movable relative to each other in directions which are normal to each other and transverse to said guide, an annular tool, which has inwardly facing cutting means and is carried by said compound rest and adapted to surround a workpiece held by said workpiece-holding means, means for revolving said tool around said workpiece, and means for coordinating the relative movements of said slides.
Claim 2
Dependent Claim
123 words
A machine tool for the machining of shafts, which comprises a longitudinal guide, workpiece-holding means for holding a workpiece in a fixed position, in which the longitudinal axis of said workpiece is parallel to said longitudinal guide, a tool slide assembly, which is movable along said longitudinal guide and comprises a compound rest, which consists of two slides, which are movable relative to each other in directions which are normal to each other and transverse to said guide, an annular tool, which has inwardly facing cutting means and is carried by said compound rest and adapted to surround a workpiece held by said workpiece-holding means, means for revolving said tool around said workpiece, and means for coordinating the relative movements of said slides.
Claim 3
Dependent Claim
15 words
A machine tool as set forth in claim 1, which is adapted to machine crankshafts.
Claim 4
Dependent Claim
24 words
A machine tool as set forth in claim 1, which comprises circular path numerical control means for coordinating the relative movements of said slide.
Claim 5
Dependent Claim
38 words
A machine tool as set forth in claim 1, in which said compound rest comprises a horizontally displaceable cross slide having a vertical guide, and a tool slide carrying said tool and slidably mounted in said vertical guide.
Claim 6
Dependent Claim
43 words
A machine tool as set forth in claim 1, in which said tool slide assembly carries an additional support, which is adapted to support a workpiece held in said fixed position and is movable along said guide relative to said tool slide assembly.
Claim 7
Dependent Claim
18 words
A machine tool as set forth in claim 1, in which said additional support consiSts of a chuck.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |