US3643307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: DMG Mori AG
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Filing: 1969-02-20
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Granted: 1972-02-22
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Expires: 1989-02-20
Abstract
Abstract A machine tool with four equidistant work spindles rotatable in a carrier which is indexible about a horizontal axis. Two stations at which the spindles dwell between successive indexing movements of the carrier are accessible from the front side of the frame and each of the remaining two stations accommodates one or more movable tool holders for a variety of tools. All of the stations are located at different levels.
Inventors
- 👤 Alfred Ledergerber
- 👤 Hans Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:29
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/20; B23B; B23B3/00; B23B3/16; B23B3/167; B23B3/168; B23Q39/00; B23Q39/04; B23Q39/042; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49995; Y10T29/49996; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/5129; Y10T29/5152; Y10T29/5154; Y10T29/5164; Y10T408/00; Y10T408/36; Y10T408/37; Y10T82/00; Y10T82/25; Y10T82/2524
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
214 words
In a machine tool, a combination comprising frame means having a front side; a carrier indexible in said frame means about a horizontal axis; four equidistant work spindles rotatably mounted in and indexible with said carrier between four stations including a first pair of stations adjacent to each other and remote from said front side and a second pair of stations adjacent to said front side; toolholder means provided only at said first pair of stations; moving means for moving said toolholder means independently of each other relative to said frame means; a pair of drive means on said frame means; cooperating transmission means on said drive means and said spindles for rotating only the spindles occupying said first pair of stations independently from each other for machining workpieces carried by these spindLes, the spindles occupying said second pair of stations are not rotated by said drive means and serve only to remove workpieces therefrom and to reverse workpieces thereon; and workpiece engaging means on each of said spindles, one pair of the spindles which are arranged diametrically opposite each other being provided with a first type of workpiece engaging means and the other pair of oppositely arranged spindles being provided with a second type of workpiece engaging means different from said first type.
Claim 2
Dependent Claim
214 words
In a machine tool, a combination comprising frame means having a front side; a carrier indexible in said frame means about a horizontal axis; four equidistant work spindles rotatably mounted in and indexible with said carrier between four stations including a first pair of stations adjacent to each other and remote from said front side and a second pair of stations adjacent to said front side; toolholder means provided only at said first pair of stations; moving means for moving said toolholder means independently of each other relative to said frame means; a pair of drive means on said frame means; cooperating transmission means on said drive means and said spindles for rotating only the spindles occupying said first pair of stations independently from each other for machining workpieces carried by these spindLes, the spindles occupying said second pair of stations are not rotated by said drive means and serve only to remove workpieces therefrom and to reverse workpieces thereon; and workpiece engaging means on each of said spindles, one pair of the spindles which are arranged diametrically opposite each other being provided with a first type of workpiece engaging means and the other pair of oppositely arranged spindles being provided with a second type of workpiece engaging means different from said first type.
Claim 3
Dependent Claim
15 words
A combination as defined in claim 1, wherein said stations are located at different levels.
Claim 4
Dependent Claim
109 words
A combination as defined in claim 2, wherein said carrier has a front face from which said workpiece engaging means for each of said spindles project forwardly, and including a partition disposed between said first and second pair of stations and projecting forwardly from said front face, said partition being movable between an operative position engaging said front face to prevent chips formed during machining of workpieces at said first pair of stations to move toward said second pair of stations and an inoperative position remote from said front face so that said carrier is free to move said spindles and said workpiece engaging means thereon between said stations.
Claim 5
Dependent Claim
30 words
A combination as defined in claim 1, and including mounting means for mounting each of said toolholder means on said frame means movable in two directions transverse to each other.
Claim 6
Dependent Claim
26 words
A combination as defined in claim 1, wherein said toolholder means at at least one station of said first pair of stations includes an indexible turret.
Claim 7
Dependent Claim
28 words
A combination as defined in claim 5, and including an auxiliary drive means provided on at least one of said indexible turrets for rotating rotatable tools mounted thereon.
Claim 8
Dependent Claim
93 words
A combination as defined in claim 1, and including slide means for each of the toolholder means, said slide means comprising a main slide mounted on said frame means reciprocable in a first direction and a second slide mounted on said main slide reciprocable in a second direction transverse to said first direction, said toolholder means being mounted on said second slide, said moving means comprising first drive means for moving said main slide relative to said frame means and second drive means for moving said second slide relative to said first slide.
Claim 9
Dependent Claim
29 words
A combination as defined in claim 1, and including means for arresting in a predetermined angular position each spindle which occupies at least one station of said first pair.
Claim 10
Dependent Claim
75 words
A combination as defined in claim 1, wherein each drive means for rotating the spindle occupying the first pair of stations comprises a drive motor mounted on said frame means, a drive shaft turnably mounted in said frame means and connected to said drive motor to be driven thereby, said cooperating transmission means on said drive shaft and each spindle drive the latter when it occupies a respective one of said first pair of stations.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |