US3762035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of machining work-pieces on opposite side in a machine tool
Assignee: Individual
•
Filing: 1971-12-17
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Granted: 1973-10-02
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Expires: 1991-12-17
Abstract
Abstract A method of machining workpieces on opposite sides in a fourspindle machine in which the workpieces are moved along a circular path between a succession of four equidistant stations of which the first and second station comprise machining stations, in which a workpiece is mounted on a spindle at the fourth station preceding the first station, than indexed to the first and second station to be machined at one side at each of the stations, then indexed to the third station and removed from its spindle and mounted in reverse position on the spindle at the fourth station, whereafter it is again indexed to the first and second station to be machined on the other side thereof while a new workpiece is mounted on the spindle at the fourth station.
Inventors
- 👤 A Ledergerber
- 👤 H Jacoby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:20
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
211 words
A method of machining workpieces on opposite sides in a four spindle machine having four equidistant spindles indexible on a carrier along a circular path between a succession of four equidistant stations of which the first and second stations constitute machining stations having tool means for machining the workpieces at said first and said second stations, said method comprising the steps of introducing a workpiece at a fourth station preceding said first station; moving the workpiece in succession to said first and to said second machining stations and machining one side of said workpiece at said first and said second stations by operating said tool means at said first and second stations in a first predetermined manner; moving the workpiece after one side has been machined to a third station following said second station; removing the workpiece from said third station and inserting it in inverted position into said fourth station; subsequently moving the workpiece again in succession to said first and said second stations and machining the other side thereof by operating the tool means at said first and said second stations in a second predetermined manner differing from said first pRedetermined manner; moving the finished workpiece to said third station; and removing the finished workpiece from said third station.
Claim 2
Independent Claim
211 words
A method of machining workpieces on opposite sides in a four spindle machine having four equidistant spindles indexible on a carrier along a circular path between a succession of four equidistant stations of which the first and second stations constitute machining stations having tool means for machining the workpieces at said first and said second stations, said method comprising the steps of introducing a workpiece at a fourth station preceding said first station; moving the workpiece in succession to said first and to said second machining stations and machining one side of said workpiece at said first and said second stations by operating said tool means at said first and second stations in a first predetermined manner; moving the workpiece after one side has been machined to a third station following said second station; removing the workpiece from said third station and inserting it in inverted position into said fourth station; subsequently moving the workpiece again in succession to said first and said second stations and machining the other side thereof by operating the tool means at said first and said second stations in a second predetermined manner differing from said first pRedetermined manner; moving the finished workpiece to said third station; and removing the finished workpiece from said third station.
Claim 3
Dependent Claim
31 words
A method as defined in claim 1, and including the step of introducing a new workpiece at said fourth station while a workpiece is machined at one of said machining stations.
Claim 4
Dependent Claim
78 words
A method as defined in claim 1, wherein the step of introducing a workpiece at said fourth station comprises the step of mounting the workpiece on that spindle which is indexed to said fourth station, and wherein the steps of moving the workpiece from said fourth to said first, from said first to said second, and from second to said third station comprises the steps of indexing said carrier during each such step through an angle of 90*.
Claim 5
Dependent Claim
42 words
A method as defined in claim 3, wherein said step of machining said workpiece at said first and said second station comprises the steps of rotating at least one of the spindles located at said two stations about the respective spindle axis.
Claim 6
Dependent Claim
50 words
A method as defined in claim 4, wherein only one of said spindles at said first and second station is rotated and including the step of arresting the other of said two spindles and the workpiece mounted thereon against rotation about the spindle axis and in a predetermined angular position.
Claim 7
Dependent Claim
25 words
A method as defined in claim 5, wherein the step of machining the workpiece on said other of said two spindles comprises drilling said workpiece.
Claim 8
Dependent Claim
26 words
A method as defined in claim 4, and including the step of arresting the spindles against rotation about their axes at said third and fourth station.
Claim 9
Dependent Claim
59 words
A method as defined in claim 3, and including the step of mounting a new workpiece on the spindle at said fourth station after each second indexing of the carrier through 90* so that after the first four initial indexing operations there will always be three workpieces on said spindles and two of the workpieces will be simultaneously machined.
Claim 10
Dependent Claim
56 words
A method as defined in claim 1, wherein said tool means at one of said first and second stations comprise an indexible turret having a plurality of tools projecting radially therefrom, and wherein said method includes the step of indexing the turret before said workpiece is in said reversed position again moved to said one station.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |