US3902389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turret punch press with work feed
Assignee: Tosoh Corp
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Filing: 1974-08-27
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Granted: 1975-09-02
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Expires: 1994-08-27
Abstract
Abstract A punch press of the turret type is provided which includes automatically controlled means for moving the workpiece in the X and Y axes and for controlling press operation. The press includes a pair of power-driven lock means aligned with two of the punching stations remote from the punching axis for partially actuating the tooling therein to clamp the workpiece therebetween without altering its configuration, thereby enabling the clamps which hold the workpiece during movement to be released and reclamped at a predetermined distance from the place of first clamping.
Inventors
- 👤 Paul R Brown
- 👤 James A Mcelwain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:42
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/12; B21D28/04; Y; Y10; Y10T; Y10T83/00; Y10T83/162; Y10T83/173; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2159; Y10T83/444; Y10T83/463; Y10T83/4632; Y10T83/4645; Y10T83/566; Y10T83/5669; Y10T83/576; Y10T83/5769; Y10T83/5778; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/75; Y10T83/869; Y10T83/8727; Y10T83/8732; Y10T83/8776; Y10T83/8785
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
A system for positioning a workpiece in a punch press of the turret type, comprising: a. a power-driven support bar movable in the X and Y axes and having power-driven clamp means for releasably grasping a marginal portion of the workpiece; b. a pair of superposed turrets having coactive relatively reciprocable tooling in at least one of the tool stations thereof; c. at least one power-driven lock means disposed in fixed relation in juxtaposition to at least one of said tool stations remote from the punching axis of the press for acting vertically on the movable tooling with sufficient force to clamp the workpiece between the tooling of the upper and lower turrets without altering the workpiece configuration; and d. control means for automatically releasing said clamp means, moving said support bar, and reclosing said clamp means while the workpiece is clamped by said lock means.
Claim 2
Independent Claim
146 words
A system for positioning a workpiece in a punch press of the turret type, comprising: a. a power-driven support bar movable in the X and Y axes and having power-driven clamp means for releasably grasping a marginal portion of the workpiece; b. a pair of superposed turrets having coactive relatively reciprocable tooling in at least one of the tool stations thereof; c. at least one power-driven lock means disposed in fixed relation in juxtaposition to at least one of said tool stations remote from the punching axis of the press for acting vertically on the movable tooling with sufficient force to clamp the workpiece between the tooling of the upper and lower turrets without altering the workpiece configuration; and d. control means for automatically releasing said clamp means, moving said support bar, and reclosing said clamp means while the workpiece is clamped by said lock means.
Claim 3
Independent Claim
81 words
A system for positioning a workpiece in a punch press of the turret type, comprising: a. a support bar adapted to be power driven horizontally in the X and Y axes and having power-driven clamp means for releasably grasping a marginal portion of the workpiece; b. a pair of superposed turrets having a set of peripheral tool stations, the lower turret having a plurality of dies and the upper turret having a corresponding plurality of punch assemblies, each punch assembly comprising
Claim 4
Independent Claim
81 words
A system for positioning a workpiece in a punch press of the turret type, comprising: a. a support bar adapted to be power driven horizontally in the X and Y axes and having power-driven clamp means for releasably grasping a marginal portion of the workpiece; b. a pair of superposed turrets having a set of peripheral tool stations, the lower turret having a plurality of dies and the upper turret having a corresponding plurality of punch assemblies, each punch assembly comprising
Claim 5
Dependent Claim
6 words
a punch guided in said sleeve;
Claim 6
Dependent Claim
6 words
a punch guided in said sleeve;
Claim 7
Dependent Claim
21 words
a stripping spring acting between the punch and sleeve, and urging the punch in a direction away from the die; and
Claim 8
Dependent Claim
21 words
a stripping spring acting between the punch and sleeve, and urging the punch in a direction away from the die; and
Claim 9
Dependent Claim
124 words
a lifting spring acting between said upper turret and one of said punch and said sleeve and normally holding said sleeve, said stripping spring and said punch in raised relation to the workpiece; c. a pair of actuators disposed in fixed relation in juxtaposition to two of said punch assemblies remote from the punching axis of the press, said actuators each having a power capacity to clamp said workpiece between and by meaNs of said sleeve and its die but insufficient power capacity to force said punch against the workpiece; and d. control means for automatically releasing said clamp means, shifting said support bar a controlled distance, and regrasping the workpiece while said actuators hold the workpiece clamped between said sleeves and said dies.
Claim 10
Dependent Claim
124 words
a lifting spring acting between said upper turret and one of said punch and said sleeve and normally holding said sleeve, said stripping spring and said punch in raised relation to the workpiece; c. a pair of actuators disposed in fixed relation in juxtaposition to two of said punch assemblies remote from the punching axis of the press, said actuators each having a power capacity to clamp said workpiece between and by meaNs of said sleeve and its die but insufficient power capacity to force said punch against the workpiece; and d. control means for automatically releasing said clamp means, shifting said support bar a controlled distance, and regrasping the workpiece while said actuators hold the workpiece clamped between said sleeves and said dies.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |