US3824822A - Programing system for press brakes or the like - Google Patents

Programing system for press brakes or the like Download PDF

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Publication number
US3824822A
US3824822A US00283857A US28385772A US3824822A US 3824822 A US3824822 A US 3824822A US 00283857 A US00283857 A US 00283857A US 28385772 A US28385772 A US 28385772A US 3824822 A US3824822 A US 3824822A
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United States
Prior art keywords
backgauge
contacts
accordance
latch
switch
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Expired - Lifetime
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US00283857A
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English (en)
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R Richardson
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Canron Inc
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Canron Inc
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Filing date
Publication date
Application filed by Canron Inc filed Critical Canron Inc
Priority to US00283857A priority Critical patent/US3824822A/en
Priority to CA171,138A priority patent/CA995795A/en
Priority to GB2338273A priority patent/GB1393825A/en
Priority to AU56812/73A priority patent/AU465727B2/en
Priority to IT50935/73A priority patent/IT986194B/it
Priority to FR7322683A priority patent/FR2196901A1/fr
Priority to BE132793A priority patent/BE801530A/xx
Priority to DE19732334437 priority patent/DE2334437A1/de
Priority to NL7309852A priority patent/NL7309852A/xx
Priority to SE7311624A priority patent/SE405556B/sv
Application granted granted Critical
Publication of US3824822A publication Critical patent/US3824822A/en
Priority to JP1981036255U priority patent/JPS56152111U/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/10—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using selector switches
    • G05B19/102—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using selector switches for input of programme steps, i.e. setting up sequence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves

Definitions

  • ABSTRACT [LS Cl. A programing System for Press brakes or the [51] Int B21c sl'loo wherein a plurality of backgauge positioning means [58] Field DIG are pre-set in nonfunctioning condition and then acti- H1 vated to functioning condition in accordance with a predetermined sequence program. A plurality of ad- [56] References Cited justable depthgauges are provided and these are also selected in accordance with a predetermined sequence UNITED STATES PATENTS program. Changes from one setting to another are 34:32; 1
  • PROGRAMING SYSTEM FOR PRESS BRAKES OR THE LIKE My invention relates primarily to press brakes and more particularly to a programming system for backgauge and stroke control.
  • FIG. I is a three dimensional view of a machine incorporating the present invention.
  • FIG. 2 is a fragmentary plan view of the machine of FIG. 1 depicting the backgauge adjusting apparatus;
  • FIG. 3 is a view depicting chain drives in the apparatus of FIG. 2;
  • FIG. 4 is a plan view of a backgauge adjustment assembly involved in the apparatus of FIG. 2;
  • FIG. 5 is a side view of the assembly of FIG. 4, partly fragmentated and sectioned;
  • FIG. 12 is a chart depicting switch operating contacts of a stepping switch involved in operating of the present system.
  • FIG. 13 is an electrical circuit diagram associated with the operation of the apparatus of FIGS. I through 7
  • Such components include a pair of slide housings 3 connected by a vertical bed plate 7 with a platen 9 mounted on the upper edge thereof and provided with an upper slot I1 and front and back side slots 13,15 respectively, preferably of dovetail contour. Above this platen and in line therewith is a reciprocably mounted ram 19.
  • the bed plate platen is adapted to mount a lower die component while the ram is adapted to carry a complementary die component for cooperation with the lower component to perform a particular operation on a piece of work, in the present instance, a bending operatron.
  • the present invention involves in part, a pair of backgauge adjustment assemblies 21 each mounted at an end of the machine on the backside of the vertical bed plate, adjacent the upper edge thereof.
  • Each such backgauge adjustment assembly comprises a frame including a bottom 23, side walls 25, 27.
  • a cylinder 37 is fixedly mounted at one end to the rear end wall between the bracing rods, and carries a piston 39 having a piston rod 41 extending through the opposite end of the cylinder toward the front end wall.
  • a carrier assembly 45 On the free end of the piston rod is mounted a carrier assembly 45 for supporting one end of a backgauge 46.
  • the carrier assembly involves a substantially rectangular metal block 47 having a vertical bolt opening in the upper end to receive an adjusting screw 48 having an expsoed end portion 51 of smaller diameter extending upwardly and forming a shoulder on which is positioned a steel washer 53.
  • a bracket plate 55 Installed about the exposed end portion of the adjusting screw and resting on the washer, is a bracket plate 55, on the end of which is supported one end of a backgauge, which may be of channel section, bolted to the bracket plate by a bolt 57 extending upwardly through the plate and channel, with a compression spring 58 about the bolt and maintained under slight compression by a washer S9 and nut 61.
  • An adjusting wheel 63 fixed to the exposed end of the adjusting screw, preferably with a washer intermediate the bracket plate and adjusting wheel, will enable elevational adjustments of the associated bracket plate and the proximate end of the backgauge supported by this bracket plate. Such adjustments become necessary to level the backgauge with respect to a particular die being used, such dies varying as to height.
  • the compression spring associated with each backgauge mounting bolt permits of adequate independence in the adjustment of each end of the backgauge, to enable independent end adjustments toward realizing level adjustment of the backgauge.
  • a recess 65 in the upper side of the block receives a guide shaft 67 which in turn is bolted to the bracket plate.
  • the piston is capable of full stroke movement to carry the backgauge through its full range of adjustment without programming.
  • the backgauge To program the backgauge, it must be restricted as to position, to certain predetermined adjustments, and then sequenced as to the use of such adjustments in accordance with the bending operations to be performed.
  • each gauge adjustment assembly includes a plurality of screw drives 71, 73, 75, 77 etc., one end of each being rotatably mounted in a bearing in a partition wall 81 carried by and between the side walls of the frame, just below and just to the front of the cylinder.
  • each screw drive passes through a bearing in the front end wall of the frame, and on the exposed end of each screw drive is fixed a chain sprocket 83, with each sprocket offset with respect to the plane of the other sprockets, the spacing of the various sprockets with respect to the front end wall of the frame, being the same for the corresponding sprockets of the other gauge adjustment assembly.
  • a slide assembly including a drive nut 87 on the screw, a latch 89 carried by the drive nut, and means enabling switching of the latch between a latching position in line of travel of a portion of the backgauge supporting means and a position out of line of travel of said backgauge supporting means.
  • Said latch includes a substantially rectangular plate 91 and means hingedly securing said plate to the nut on a hinge axis 93 enabling said latch to swing into latching position from its normal out of latching position.
  • the means for normally holding of the latch in its out of latching position includes means in the form of a spring 95 disposed in a channel 97 in the nut and anchored at one end to a wall of the channel and at its other end to a lever arm 99 extending from the latch and urging the latch toward its out of latching position.
  • a platform 101 is connected to the nut and extends rearwardly beneath the partition wall 81 and to a point beyond.
  • a bracket 103 for supporting a solenoid 105 having a core 107 protruding in the direction of the latch.
  • each screw drive of one of the adjustment assemblies is installed a normally open roller switch 113 while the corresponding roller switch 114 of the other adjustment assembly will be of the normally closed type, each of the switches having a vertically extended actuating stem terminating in a roller 115 lying in the path of movement of a stop slide 117 affixed to the underside of the backgauge supporting block.
  • the slide will engage the stem of the roller switch and depress the same to alter the condition of the circuit in which the switch may be located.
  • the drive nut and associated components will be adjusted to various positions and the point in the return stroke of the backgauge supporting block at which the roller switch would be so actuated, will depend upon the prevailing adjustment of the slide assembly on the screw drive.
  • a stop plate 121 Adjacent the forward end of the stop slide is a stop plate 121 adapted to abut against the latch during forward movement of the backgauge supporting block, the point of abutment in the forward stroke of the backgauge being a function of the prevailing position of the drive nut and associated latch. To permit the stop slide to initiate forward movement beyond the latch, should the latch be in its up or functioning position at the time, the forward end of the stop slide is tapered.
  • Each backgauge supporting assembly is supported in its position behind the bed of the machine, by affixing to the front wall of the bed, a dovetailed key 123 which is slidably installed in the proximate side slot 15 formed in the platen of the bed.
  • This may take the form of an adjusting hand wheel 127 for each corresponding pair of adjusting screws, such adjusting wheel being mounted on the end of a shaft 129 supported on bearings 131, 133 within a housing 135 mounted on the front face of the machine bed, the shaft passing through the wall of the machine.
  • a sprocket 137 On the end of the shaft behind the bed of the machine, is keyed a sprocket 137 in the plane of the sprockets of the corresponding screws which it is to control.
  • a chain roller 139 is mounted on the rear of the bed in the plane of the aforementioned sprockets and in a position to hold the chain in positive engagement with the adjusting wheel sprocket.
  • each adjusting wheel there is associated a digital readout 141 which indicates to the operator, screw adjustments as they are being made.
  • Such digital readout is driven from the adjusting wheel shaft by providing on such shaft within the shaft supporting housing, a helical gear 143 and meshing it with a helical pinion 145 mounted on a shaft 147 controlling the digital movements within the indicator.
  • a helical gear 143 By matching the ratio of the helical gear and pinion to the thread of the adjusting assemblies, very accurate adjustments may be made.
  • a locking block 149 on the shaft within the shaft supporting housing is affixed to the end of a screw threadedly passing through the wall of the housing and carrying on its exposed end, a knob 153, which upon rotation will cause the locking nut to move into pressure engagement with the shaft to lock the same against turning.
  • the drive nuts on each pair of corresponding screws will be adjusted simultaneously and can be moved to any position within the permissible range provided on the adjusting screws.
  • four pairs of adjusting screws four different settings can be established at any time and such settings can then be employed in performing a sequence of bends in a sheet of metal, the angles of such bends being determined by stroke adjustments of the machine.
  • Adjustable movement of the backgauge requires simultaneous actuation of the pistons in their respective cylinders.
  • the pistons are preferably air actuated from a source of air under compression, the cylinders being preferably supplied in parallel from such source, one line 159 from such source branching and supplying the corresponding ends of the cylinders. while another line 161 from such source branches to supply the opposite ends of the cylinders.
  • a switching valve assembly 163 installed in one line 159, is actuated in one direction to an exhaust position by a spring 164 and in the opposite direction by a solenoid 165 to an air feed position.
  • a similar switching valve assembly 167 is located in the other line 161. One is thus enabled to reverse flow of air to the cylinders, whereby to selectively perform an advance stroke and a return stroke.
  • a cross shaft 171 is mounted in bearings on the facing side walls of the backgauge adjusting assemblies, and at each end carries a sprocket 173.
  • Each sprocket is chain coupled to an idler sprocket 175 mounted on the same side wall, while the chain itself is mechanically tied in with the proximate stop slide by a connection 177 having a chain anchoring screw 179 installed therein.
  • circuitry Also depicted in the circuitry are three switch banks, a first bank 183 involving four switches 185 for determining the program selector sequence, a second bank 187 comprising four switches 189 constituting backgauge position selector switches, each having four contacts, while a third bank 191 involves four depth stop selector switches 193, each also having four contacts.
  • a stepping switch 201 Electrically associated with the program selector sequence switches is a stepping switch 201 of the type having a plurality of cam operated contacts 203, 205, 207, 209, 211, 213, 215, 217, 219, 221, 223, 225, 227, 229, 231, 233, 235, 237, 239 and 241, the intermittent cam movement being controlled by a stepping switch winding 245.
  • MT series step switch
  • Eagle Signal a division of E. W. Bliss Company of 736 Federal Street, Davenport, Iowa 52803 and includes means for adjusting cam action to establish which contacts will respond to cam action and when.
  • the contacts are set to function in accordance with the schedule as set forth in FIG. 12 of the drawings.
  • Each program selector sequence switch 185 includes five sets 185a, 185b, 185e, 185d and 185e, each involving five contacts 247, 249, 251, 253 and 255, with a rotatable switch contact 257 for each set, and all rotatable contactors being ganged simultaneous adjustment through a single knob 259, the first of these switches not making use of the first and last set of contacts.
  • wired contacts are connected to line L1 of a power source while each of the rotatable contacts 257 is connected through its own associated stepping switch contact to a common line 261, which line passes through the first contact 203 of the stepping switch to the control winding 245 of the stepping switch, and from there to L2 of the power source.
  • the stepping switch contact 203 through which the common line 261 passes to the control winding, is normally closed for all positions of the stepping switch except the first position as designated on the chart of Figure.
  • the first four sets of contacts are employable in determining repeat strokes where a particular backgauge setting can be used more than once and up to four times in succession in a particular sequence.
  • the fifth or last set of contacts is employed in correlating these sequence switches to the operation of the backgauge and depth stop controls.
  • a signal light 265 parallels the wired contacts of each of these first four sets of contacts, to indicate when such wired contacts are functioning in a circuit.
  • the first of the program selector sequence switches which does not require use of the first and last sets of contacts, is otherwise wired the same as the other switches in this bank.
  • the chart of FIG. 12 indicates that preliminary to the start of a sequence of programmed operations, contacts 235 and 248 are closed. All others are open.
  • the contacts 293 close a circuit through a selected contact 298 of the first backgauge position selector switch to a backgauge relay 299.
  • Contacts 295 similarly close a circuit through a selected contact 301 of the first depth stop selector switch, such circuit including a depth stop relay 305.
  • the relay 299 when energized, closes a pair of normally open contacts 311 in circuit to a relay 315 via a normally open roller switch 113 and the normally open slow make contacts 317 of the time delay relay 309.
  • the time delay relay 309 in addition to the slow make contacts 317, has a pair of normally open instantaneous contacts 319 which close a circuit to the solenoid of the switching valve assembly 167, causing retraction of the backgauge and connected apparatus from its prevailing position, which means also, rearward movement of the stop slides 117 to, at some point in their movement, depress their associated roller switches.
  • roller switch 113 in circuit with contacts 311 will close, along with the slow make contacts 317 of the time delay relay 309, and thereby cause gauge relay 315 to energize.
  • This relay 315 closes a pair of normally open contacts 321 to establish a holding circuit for itself.
  • Relay 315 also opens a pair of normally closed contacts 323 in the circuit to the solenoid of the return switching valve assembly 167, while at the same time closing a pair of normally open contacts 327 to cause energization of the solenoid of the advance switching valve assembly 163, thus halting the rearward movement of the backgauge and initiating an advance movement.
  • relay 315 closes a pair of normally open contacts 329 to energize corresponding solenoids in the two adjusting assemblies, to flip up corresponding latch plates 91 controlling the next stop position in the sequence.
  • latch plates are now awaiting engagement by the associated advancing stop plate 121.
  • roller switch 114 is, during advance of the backgauge, being depressed by the stop slide, it will be in open condition until the stop slide moves off the roller as the backgauge approaches its new position. At this moment, the roller switch closes to complete the circuit through time delay relay 337 which then becomes energized.
  • This relay 337 has a pair of normally open instantaneous contacts 339 and a pair of normally closed slow opening contacts 341, these being connected in series to close a circuit through the solenoid of the return switching valve assembly 167 upon energization of this relay 337, which circuit remains closed but a brief time, as determined by the opening of the slow opening contacts 341.
  • a circuit adapted to include the stepping switch winding 245 directly across the power source is also associated with the operation of the stepping switch 201.
  • a circuit adapted to include the stepping switch winding 245 directly across the power source including the contact 345 ofa 3-way single pole switch 347 and a pair of normally open contacts 349.
  • relay 351 located on the machine in circuit with the slow release contacts 353 of a time delay relay 357, which is also mounted on the machine, the contacts of a normally open depth limit switch 359 and a pair of normally open contacts 361 on the relay 305.
  • the relay 357 is in series with the same normally open contacts 361, the same depth limit switch 359, a second pair of normally open contacts 363 associated with the aforementioned relay 351, and the back travel limit switch 365 of the machine.
  • relay 357 When energized, relay 357 closes a pair of normally open contacts 367 to establish a holding circuit, while at the same time opening its slow opening contacts 353 to disconnect relay 351, and closing a pair of slow closing contacts 369 which complete a circuit through an Up" relay 371 located on the machine and controlling the return of the ram from its position at the end of a work stroke.
  • time delay 357 will have opened the circuit to the relay 351 which, as a result, will deenergize and drop out its contacts 349 to open that circuit to the stepping switch winding 245.
  • the stepping switch winding 245 can be energized anytime that a circuit including this winding is completed through any of the program selector sequence switches 185. If no circuit is completed at the first set of contacts of any one switch, the backgauge position will remain undisturbed and ready for the next stroke of the ram.
  • the advance of the stepping switch one step in response to the closing of the contacts 349 will place the stepping switch winding 245 in circuit through the wired contact 253 of the program selector sequence switch under consideration, and cause the selector switch to advance another step. and this will repeat each time the winding 245 is placed in circuit by a wired contact in that switch until a stepping switch contact associated with the contacts of the next switch is closed, and the stepping switch winding circuit is broken.
  • the pertinent relay 291 cannot be energized and nothing happens except that the stepping switch winding 245 will be energized through the corresponding contacts 255 of the same switch causing the stepping switch to step its way to the next program selector switch 185 in the bank.
  • a single rotary switch 375 having a number of contacts 377, 379, 381, 383 and 385 and a rotary contact 387, all corresponding to those in each set of contacts 247-255 of a program selector sequence switch 185, is associated with the first program selector sequence switch.
  • Contact 377 is connected to the first relay 291, contact 379 to the second relay 291, contact 381 to the third of these relays, and contact 383 to the fourth.
  • Contact 385 is connected to the line 261.
  • the rotary contact 387 of this switch is connected to that side of contacts 209 which were previously connected to line 261.
  • the connection from contacts 209 to the line 261 must be open, and this can be made possible by inclusion of a switch 391 in the connection,
  • a connection 393 through a switch 395 from the line L1 to the contacts 209 must be completed, and
  • the connection to the last rotary contact 265 of the first program selector sequence switch must be open, which can also be accomplished through the insertion of a switch 397.
  • All three switches 391, 295 and 397 may be ganged to facilitate the inclusion of the additional switch 375.
  • a second such switch 375 associated with the second program selector sequence switch will be related to stepping switch contacts 217 and will be similarly connected in circuit.
  • a third such switch associated with the third program selector sequence switch will be related to stepping switch contacts 225, while a fourth such switch associated with the fourth program selector sequence switch, will be related to stepping switch contacts 233. Both will be connected in circuit like the first two.
  • a programming system for a press brake or the like having a ram for performing operation on work said programming system including a backgauge, a backgauge adjusting assembly comprising means for controlling movement of said backgauge through a range of adjustability, a plurality of mechanical backgauge posi tion determining means, each capable of being ren dered functional or non-functional, means for prelocating, from a remote station, the individual mechanical backguage position determining means in a nonfunctional condition, and means, between work strokes of said machine, for establishing said various mechanical backgauge position determining means to a functioning condition in accordance with a predetermined sequence program.
  • each of said backgauge positioning means including a screw drive supported for rotation in said frame, a latch threadedly carried on said screw drive, means for shifting said latch between a nonfunctioning position and a functioning position, and means, on a movable component of said backgauge movement controlling means, for engaging said latch in its functioning position, to halt forward movement of said movement controlling means.
  • a programing system in accordance with claim 2 characterized by means interconnecting both said means for controlling movement of said backgauge, for maintaining synchronism between the two backgauge movement controlling means.
  • a programming system in accordance with claim 6, characterized by a plurality of program selector sequence switches, each having a plurality of sets of contacts and a rotary contact, with each succeeding set of contacts having a progressively larger number of contacts wired for connection in circuit, and means connecting said wired contacts in common to one side of a power source, with each of said rotary selector contacts connected to a different contact of said stepping switch, and means for maintaining one of said backgauge selector switches in circuit so long as an associated program selector sequence switch is functioning.
  • An assembly for pre-setting the adjustments of a backgauge in a gauge programing system comprising a frame, a piston drive assembly including a cylinder supported by said frame and a piston within said cylinder having a rod extending through an end of said cylinder for reciprocal movement within the full stroke of said piston, means connected to said piston rod for supporting one end of a backgauge, adjustable stop means in the path of a portion of said backgauge supporting means for arbitrarily limiting the travel of said backgauge supporting means in one direction, said adjustable stop means including a drive supported by said frame substantially parallel to said piston rod, a slide assembly in drive engagement with said drive including a drive nut, a latch carried by said drive nut, means enabling switching of said latch between a latching position in line of travel of a portion of said backgauge supporting means and a position out-of-line of travel of said backgauge supporting means, means for actuating said drive to adjust the position of said latch, and means for indicating such adjustment as it is being made.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US00283857A 1972-08-25 1972-08-25 Programing system for press brakes or the like Expired - Lifetime US3824822A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US00283857A US3824822A (en) 1972-08-25 1972-08-25 Programing system for press brakes or the like
CA171,138A CA995795A (en) 1972-08-25 1973-05-08 Programming system for press brakes or the like
GB2338273A GB1393825A (en) 1972-08-25 1973-05-16 Programming system for press brakes
AU56812/73A AU465727B2 (en) 1972-08-25 1973-06-12 Programming system for press brakes orthe like
IT50935/73A IT986194B (it) 1972-08-25 1973-06-20 Perfezionamento nelle disposizioni di controllo e comando per presse e simili
FR7322683A FR2196901A1 (sv) 1972-08-25 1973-06-21
BE132793A BE801530A (fr) 1972-08-25 1973-06-27 Dispositif de programmation du fonctionnement d'une presse
DE19732334437 DE2334437A1 (de) 1972-08-25 1973-07-06 Programmsteuerung fuer biegepressen o.dgl
NL7309852A NL7309852A (sv) 1972-08-25 1973-07-16
SE7311624A SE405556B (sv) 1972-08-25 1973-08-27 Programmeringsanordning for en kantpress
JP1981036255U JPS56152111U (sv) 1972-08-25 1981-03-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00283857A US3824822A (en) 1972-08-25 1972-08-25 Programing system for press brakes or the like

Publications (1)

Publication Number Publication Date
US3824822A true US3824822A (en) 1974-07-23

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Application Number Title Priority Date Filing Date
US00283857A Expired - Lifetime US3824822A (en) 1972-08-25 1972-08-25 Programing system for press brakes or the like

Country Status (11)

Country Link
US (1) US3824822A (sv)
JP (1) JPS56152111U (sv)
AU (1) AU465727B2 (sv)
BE (1) BE801530A (sv)
CA (1) CA995795A (sv)
DE (1) DE2334437A1 (sv)
FR (1) FR2196901A1 (sv)
GB (1) GB1393825A (sv)
IT (1) IT986194B (sv)
NL (1) NL7309852A (sv)
SE (1) SE405556B (sv)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874205A (en) * 1974-02-19 1975-04-01 Hurco Mfg Co Inc Digitally controlled multiple depth stop and return stroke limit control for press brakes
US4242904A (en) * 1978-04-17 1981-01-06 Northampton Sheet Metal Fabrications Ltd. Workpiece stop means for a sheet metal working machine
US4337637A (en) * 1980-09-25 1982-07-06 Hurco Manufacturing Company, Inc. Parallel positioning device
US4430879A (en) * 1981-06-12 1984-02-14 Hurco Manufacturing Company, Inc. Apparatus for controlling a press brake
US4486840A (en) * 1981-10-14 1984-12-04 Houdaille Industries, Inc. Computer numeric control for metal forming
US4486841A (en) * 1980-12-09 1984-12-04 Amada Company, Limited Bending press
US5857366A (en) * 1994-07-08 1999-01-12 Amada Company, Ltd. Method of bending workpiece to target bending angle accurately and press brake for use in the same method
CN102806682A (zh) * 2012-08-03 2012-12-05 中南钻石股份有限公司 超硬材料合成设备行程控制装置
CN113458189A (zh) * 2021-07-01 2021-10-01 深圳市合信自动化技术有限公司 一种换步时后挡料自动向前停靠的折弯机系统

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Publication number Priority date Publication date Assignee Title
JPH0221137Y2 (sv) * 1985-06-25 1990-06-07
DE102007056827B3 (de) * 2007-11-26 2009-06-10 Data M Software Gmbh Controller und vollautomatisches Biegesystem für Biegemaschinen

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US3126045A (en) * 1964-03-24 Indexing mechanism for reciprocating devices
US3176556A (en) * 1960-12-14 1965-04-06 Harris Intertype Corp Control for the back gage of a cutting machine
US3192750A (en) * 1962-01-02 1965-07-06 Pacific Ind Mfg Co Sequence control for machine ram
US3245556A (en) * 1959-09-16 1966-04-12 Lauson Company Division Of Mie Magnetic tape control systems for guillotine type cutting machine
US3587375A (en) * 1969-01-13 1971-06-28 North American Rockwell Systems for marking a magnetic tape with a repetitive pattern
US3600993A (en) * 1970-01-09 1971-08-24 Cincinnati Inc Shearing apparatus
US3618349A (en) * 1969-03-26 1971-11-09 Hurco Mfg Co Inc Gauging system for presses
US3691887A (en) * 1970-06-01 1972-09-19 Hurco Mfg Co Inc Automatic shearing method and apparatus
US3733885A (en) * 1971-04-19 1973-05-22 E Brauer Automatic press brake back gauge

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126045A (en) * 1964-03-24 Indexing mechanism for reciprocating devices
US3245556A (en) * 1959-09-16 1966-04-12 Lauson Company Division Of Mie Magnetic tape control systems for guillotine type cutting machine
US3176556A (en) * 1960-12-14 1965-04-06 Harris Intertype Corp Control for the back gage of a cutting machine
US3192750A (en) * 1962-01-02 1965-07-06 Pacific Ind Mfg Co Sequence control for machine ram
US3587375A (en) * 1969-01-13 1971-06-28 North American Rockwell Systems for marking a magnetic tape with a repetitive pattern
US3618349A (en) * 1969-03-26 1971-11-09 Hurco Mfg Co Inc Gauging system for presses
US3600993A (en) * 1970-01-09 1971-08-24 Cincinnati Inc Shearing apparatus
US3691887A (en) * 1970-06-01 1972-09-19 Hurco Mfg Co Inc Automatic shearing method and apparatus
US3733885A (en) * 1971-04-19 1973-05-22 E Brauer Automatic press brake back gauge

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874205A (en) * 1974-02-19 1975-04-01 Hurco Mfg Co Inc Digitally controlled multiple depth stop and return stroke limit control for press brakes
US4242904A (en) * 1978-04-17 1981-01-06 Northampton Sheet Metal Fabrications Ltd. Workpiece stop means for a sheet metal working machine
US4337637A (en) * 1980-09-25 1982-07-06 Hurco Manufacturing Company, Inc. Parallel positioning device
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CN102806682A (zh) * 2012-08-03 2012-12-05 中南钻石股份有限公司 超硬材料合成设备行程控制装置
CN102806682B (zh) * 2012-08-03 2015-03-04 中南钻石有限公司 超硬材料合成设备行程控制装置
CN113458189A (zh) * 2021-07-01 2021-10-01 深圳市合信自动化技术有限公司 一种换步时后挡料自动向前停靠的折弯机系统
CN113458189B (zh) * 2021-07-01 2023-03-14 深圳市合信自动化技术有限公司 一种换步时后挡料自动向前停靠的折弯机系统

Also Published As

Publication number Publication date
DE2334437A1 (de) 1974-03-07
AU5681273A (en) 1974-12-12
SE405556B (sv) 1978-12-18
IT986194B (it) 1975-01-20
AU465727B2 (en) 1975-10-02
NL7309852A (sv) 1974-02-27
BE801530A (fr) 1973-10-15
CA995795A (en) 1976-08-24
FR2196901A1 (sv) 1974-03-22
GB1393825A (en) 1975-05-14
JPS56152111U (sv) 1981-11-14

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