US4084424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twin motor and screw drive for workpiece positioning stops and for press ram drive and the like
Assignee: Hurco Manufacturing Co Inc
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Filing: 1976-08-06
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Granted: 1978-04-18
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Expires: 1996-08-06
Abstract
Abstract A rear gauge assembly includes a gauge bar extending between two carriages, each carriage being mounted to a housing mounted to the rear of a press brake bed and having a lead screw and motor associated with it. Front gauges are provided on carriages on a pair of similar housings mounted to a rail mounted to the front of a press brake bed, each of these housings also having a lead screw and motor for driving its respective carriage. A microcomputer is employed to control the two motors for synchronizing movement of the rear gauge carriages with each other while driving the rear gauge, and to control the two motors for the front gauge while the front gauges are being driven to synchronize movement of front gauges with each other. The same synchronizing techniques for two lead screws are employed on a new type of ram drive for press brakes incorporating two ram drive screws, with a motor for each screw, the motors being synchronized by the controller.
Inventors
- 👤 Gerald V. Roch
- 👤 Chris L. Hadley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
B; B23; B23D; B23D33/00; B23D33/10; B21; B21D; B21D5/00; B21D5/002
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
114 words
A gauging apparatus for presses and the like comprising: frame means having first and second lead screws therein; first and second screw drive motors, said first motor being coupled to said first screw for driving said first screw, and said second motor being coupled to said second screw for driving said second screw; first and second gauge mounting carriages coupled to said first and second screws respectively and linearly drivable thereby; control means coupled to said motors for controlling the drive of said motors and thereby controlling drive of said screws, and control means including electric synchronizing means for causing said motors to drive said carriages in synchronism, said control means including a microprocessor.
Claim 2
Dependent Claim
114 words
A gauging apparatus for presses and the like comprising: frame means having first and second lead screws therein; first and second screw drive motors, said first motor being coupled to said first screw for driving said first screw, and said second motor being coupled to said second screw for driving said second screw; first and second gauge mounting carriages coupled to said first and second screws respectively and linearly drivable thereby; control means coupled to said motors for controlling the drive of said motors and thereby controlling drive of said screws, and control means including electric synchronizing means for causing said motors to drive said carriages in synchronism, said control means including a microprocessor.
Claim 3
Dependent Claim
78 words
The apparatus of claim 1 wherein: said frame means include a pair of frames, each frame having a pair of horizontally-spaced, longitudinally-extending carriage ways thereon, each way having a running edge of V-shaped cross section; said carriages each having grooved rollers thereon mounted for rotation thereon and engaging the said running edge of one of the ways of the respective frame whereby said carriage is supported and guided as it is driven by one of said lead screws.
Claim 4
Dependent Claim
97 words
The apparatus of claim 2 and further comprising: a pair of ball nuts and connectors, one of said ball nuts being on each of said lead screws and having one of said connectors secured thereto; a pair of U-shaped drive yokes, one yoke for each carriage, each of said yokes being secured at its bottom to one of said connectors and extending outwardly and then upwardly therefrom on around the one of said frames having therein the lead screw driving the said one connector, the upper ends of each yoke being affixed to one of said carriages.
Claim 5
Dependent Claim
70 words
The apparatus of claim 2 and further comprising: two pairs of posts, one pair of posts being affixed to each of said carriages and projecting upwardly therefrom; a pair of horizontal support brackets, each bracket being mounted to the posts of one pair of said pairs of posts and vertically movable thereon; and two height adjusting screws mounted to said posts and operable to change the height of said brackets.
Claim 6
Dependent Claim
57 words
The apparatus of claim 4 and further comprising: a pair of horizontal support rods, each clamped in one of said horizontal support brackets and, upon unclamping, relatively movable therein parallel to the running edges of said ways, and a pivoting gauge bar extending between and pivotally mounted to said support rods to pivot about a horizontal axis.
Claim 7
Dependent Claim
144 words
The apparatus of claim 2 and further comprising: means on said carriages for locating material to be fed into the press or the like; and vertical guideways extending transverse to the direction of extension of said carriage ways, the rear end of each of said frames being affixed to one of said vertical guideways, a front mounting rail securable to a press or the like, upper and lower horizontally extending carriage support guideways affixed to said rail, a pair of front mounting speed carriages having grooved rollers thereon received and guidingly supported on said guideways for horizontal movement of said speed carriages side-to-side on the press or the like, said vertical guideways being received in said speed carriages and being vertically movable and guided in said speed carriages, and means on said speed carriages and vertical guideways for raising and lowering said vertical guideways.
Claim 8
Dependent Claim
61 words
The apparatus of claim 6 wherein: said means for raising and lowering include height adjustment screws, one of said screws being on each of said speed carriages and threaded into said vertical guideway and each having a handwheel on said screw for convenient manual rotation thereof to raise and lower the frames and thereby raise and lower the material locating means.
Claim 9
Dependent Claim
40 words
The apparatus of claim 6 and further comprising a combined stock support arm and side squaring bar member clamped to at least one of said frames and, by unclamping, vertically adjustable on the frame to which the member is mounted.
Claim 10
Dependent Claim
121 words
The apparatus of claim 1 and further comprising: additional frame means having third and fourth lead screws therein; third and fourth screw drive motors, said third motor being coupled to said third screw for driving said third screw, and said fourth motor being coupled to said fourth screw; third and fourth gauge mounting carriages coupled to said third and fourth screws respectively and linearly drivable thereby; said control means being coupled to said third and fourth motors for controlling the drive of said third and fourth motors and thereby controlling the drive of said third and fourth screws, said control means including electric synchronizing means for causing said third and fourth motors to drive said third and fourth carriages in synchronism.
Claim 11
Dependent Claim
21 words
The apparatus of claim 9 wherein: said control means include four motor controlling servo amplifiers one for each of said motors.
Claim 12
Dependent Claim
48 words
The apparatus of claim 9 and further comprising: a press brake bed, the first mentioned frame means being mounted to the rear of said bed for supporting a rear gauge, and said additional frame means being mounted to the front of said bed, for supporting a front gauge.
Claim 13
Dependent Claim
88 words
The apparatus of claim 11 wherein: the first mentioned of said frame means, and said additional frame means each include a pair of frames, each frame having a pair of horizontally-spaced, longitudinally-extending carriage ways thereon, each way having a running edge of V-shaped cross section; said carriages each having grooved rollers thereon mounted for rotation thereon and engaging the said running edge of one of the ways of the respective frame whereby said carriage is supported and guided as it is driven by one of said lead screws.
Claim 14
Dependent Claim
83 words
The apparatus of claim 12 and further comprising: drive nuts on said screws; U-shaped drive yokes connected to said drive nuts, each of said yokes having a central bottom portion connected to one of said nuts and having arms extending outwardly therefrom and then upwardly around the one of said frames having the nut receiving screw therein, with the upper ends of the arms of the yoke being attached to that one of said carriages which is to be driven by said nut.
Claim 15
Dependent Claim
29 words
The apparatus of claim 13 and further comprising: rear gauge means mounted to said first and second carriages, and front gauge means mounted to said third and fourth carriages.
Claim 16
Dependent Claim
97 words
Gauging apparatus for presses and the like comprising: an elongated housing; a drive screw in said housing and substantially enclosed by said housing; a drive motor coupled to said screw for driving said screw; a pair of parallel, longitudinally-extending carriage ways secured to said housing, each way having a running edge of V-shaped cross section; a gauge mounting carriage coupled to said screw for linear drive by said screw, said carriage having grooved rollers thereon engaging at least one of said running edges, whereby said carriage is supported and guided as it is driven by said screw.
Claim 17
Dependent Claim
97 words
Gauging apparatus for presses and the like comprising: an elongated housing; a drive screw in said housing and substantially enclosed by said housing; a drive motor coupled to said screw for driving said screw; a pair of parallel, longitudinally-extending carriage ways secured to said housing, each way having a running edge of V-shaped cross section; a gauge mounting carriage coupled to said screw for linear drive by said screw, said carriage having grooved rollers thereon engaging at least one of said running edges, whereby said carriage is supported and guided as it is driven by said screw.
Claim 18
Dependent Claim
14 words
The apparatus of claim 15 and further comprising: gauge means mounted on said carriage.
Claim 19
Dependent Claim
132 words
The apparatus of claim 15 and further comprising: vertical guideway means extending transverse to the direction of extension of said carriage ways, the rear end of said housing being affixed to said vertical guideway means, a front mounting rail securable to a press or the like, upper and lower horizontally extending carriage support guideways affixed to said rail, a speed carriage having grooved rollers thereon received and guidingly supported on said guideways for horizontal movement of said speed carriage sideways on the press or the like, said vertical guideway means being received in said speed carriage and vertically movable and guided in said speed carriage, and means on said speed carriage and on said vertical guideway means for raising and lowering said vertical guideway means and thereby raising and lowering said housing.
Claim 20
Dependent Claim
41 words
The apparatus of claim 15 wherein: said housing is a downwardly opening casting; and said carriage ways are affixed to the top of the casting and the said running edges thereof are horizontally spaced and face outwardly away from each other.
Claim 21
Dependent Claim
43 words
The apparatus of claim 18 and further comprising: a nut threaded on said drive screw; and strap means extending downward from said carriage and under said housing and fixed to said nut in said housing to thereby couple said carriage to said screw.
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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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |