US20090090161A1 - Underdrive-type press - Google Patents

Underdrive-type press Download PDF

Info

Publication number
US20090090161A1
US20090090161A1 US12/298,321 US29832107A US2009090161A1 US 20090090161 A1 US20090090161 A1 US 20090090161A1 US 29832107 A US29832107 A US 29832107A US 2009090161 A1 US2009090161 A1 US 2009090161A1
Authority
US
United States
Prior art keywords
slide
pressurizing portion
die
underdrive
upper die
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/298,321
Other languages
English (en)
Inventor
Hiroyuki Amino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amino Corp
Original Assignee
Amino Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Amino Corp filed Critical Amino Corp
Assigned to AMINO CORPORATION reassignment AMINO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMINO, HIROYUKI
Publication of US20090090161A1 publication Critical patent/US20090090161A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/12—Devices controlling or operating blank holders independently, or in conjunction with dies mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/103—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by screw means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • B30B1/14—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/061—Cushion plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/14—Control arrangements for mechanically-driven presses
    • B30B15/148—Electrical control arrangements

Definitions

  • the present invention relates to a press used for plastic forming of a metal material or nonmetal material, and particularly, to an underdrive-type high-precision forming press.
  • Presses are widely used as a means to perform plastic forming represented by drawing on metal and nonmetal materials.
  • a frame structure in which a column is erected on a bed, and a crown is installed at the apex of the column is adopted.
  • a slide f on which an upper die (die in this example) e is loaded is adapted to be raised or lowered by a driving device (not shown) provided on the side of the crown.
  • a lower die (punch in this example) g is fixed to the bed, and a wrinkle holding ring h is disposed around the lower die g.
  • the wrinkle holding ring h is supported by a number of cushion pins m extending from a pad k which is raised or lowered by fluid pressure cylinders j.
  • a forming stroke is performed by raising the pad k to lift the wrinkle holding ring h to the level of the lower die by the cushion pins m, lowering the slide to sandwich a peripheral edge of a workpiece W by the wrinkle holding ring h and a peripheral edge of the upper die e, further pressing and lowering the slide f in this state, and lowering the wrinkle holding ring h in an interlocking manner.
  • the upper slide side becomes a forming press unit, and the slide is lowered by a whole stroke required for forming, by a drive mechanism.
  • stroke length becomes large, and achievement of energy saving is difficult.
  • the stroke length is large, the overall height of the press becomes high, and thereby, a large space is required within a building. In some case, a situation in which installation cannot be made also occurs.
  • the dies are processed with high precision, a frame structure whose rigidity has become high is adopted, or a CNC control method is adopted for operation of the press.
  • a frame structure whose rigidity has become high is adopted, or a CNC control method is adopted for operation of the press.
  • any deflection by elastic deformation and occurrence of troubles resulting therefrom could not be avoided due to a large load during forming operation.
  • deflection ⁇ 1 is caused in the slide as shown in FIG. 1 due to a large forming load. This impairs close contact between the slide and the upper die. Thus, it is difficult to uniformly transmit a forming force to the workpiece, and the uniform contact on a die cavity of the workpiece becomes is hardly performed. Therefore, forming precision deteriorates.
  • the wrinkle holding ring is supported by the die cushion pins with a pitch of 150 to 300 mm, and such cushion pins have dimensions such that they extend to pass through a bolster. For this reason, it is unavoidable that deflection ⁇ 2 is caused in a wrinkle holding ring between the cushion pins due to a compressive load by the slide. For this reason, nonuniformity of a wrinkle holding force occurs, and poor forming precision, such as a reduction in plate thickness or generation of a shocking line is easily caused.
  • a hydraulic ram type drive mechanism or a crank type drive mechanism is adopted as a drive mechanism of the slide. Since the former cannot take a large number of strokes per unit time, realization of high throughput is difficult. Although the latter can make processing speed and the number of strokes high, there are problems in that processing force, processing speed, stroke position, etc., cannot be set arbitrarily, that the motion of the slide is limited, that slide speed cannot be adjusted according to various conditions, such as forming shapes or sizes of products, or materials, and that output according to the stroke length of the slide cannot be adjusted.
  • a link motion pres's in Japanese Unexamined Patent Application Publication No. 2001-300778.
  • a slide is adapted to ascend and descend via a toggle link mechanism, and a servo motor and a screw nut are used as a driving means of the toggle link mechanism.
  • This press has advantages in that the processing speed and the number of strokes can be made high, the processing speed, stroke, and output can also be set arbitrarily.
  • Patent Document 1 JP-A-2001-300778
  • the invention has been made in order to solve the above problems. It is thus a first object of the invention to provide an underdrive-type single action press capable of saving energy, saving space, and realizing high-precision formability in a well-balanced manner.
  • an underdrive-type press includes an annular wrinkle holder fixedly disposed on a bed; a forming press unit including a lower die located inside the wrinkle holder, a slide supporting a lower die within the bed, and a drive mechanism raising or lowering the slide; a drive mechanism loaded on the side of a crown, and a slide raised or lowered by the drive mechanism; a die-clamping press unit including an upper die having a clamping portion pinching a workpiece in cooperation with the wrinkle holder at its peripheral edge; and a device applying a pressing force to the upper die from its back after the last stage of the descent of the slide of the die-clamping press unit and the upper die for improvements in forming precision.
  • the die-clamping press unit is disposed on the crown side, the forming press unit is disposed on the bed side, the die-clamping press unit is not lowered under pressure during descent, and a stroke length only for performing die-clamping is required.
  • the overall height of the press can be made low.
  • forming is performed by raising a lower forming press to pressurize the lower die in a state where the die-clamping press unit operates and the upper die abuts on the wrinkle holder.
  • a minimum stroke equal to the forming stroke will be sufficient for the stroke length of the forming press unit.
  • energy saving can be realized.
  • the wrinkle holder does not ascend or descends while being supported by the cushion pins, but is fixed in position on the bed, deflection of the wrinkle holder between the pins does not occurs unlike the conventional press.
  • a device for improvements in forming precision is provided on the side of the die-clamping press unit, and a pressing force is positively superimposed on the upper die from its back after the last stage of the descent of the die-clamping press unit.
  • FIG. 1 is a sectional view showing the outline and deflection generation situation of a conventional single-action-type press.
  • FIG. 2 is a partial cutaway front view showing a first embodiment of an underdrive-type press of the invention.
  • FIG. 3 is a longitudinal sectional front view showing the details of FIG. 2 .
  • FIG. 4 is a partially enlarged view of FIG. 3 .
  • FIG. 5 is a partially enlarged view showing an example of a pressurizing portion and a pressing member in a forming precision improving device.
  • FIG. 6 is a partially enlarged view showing another example of the pressurizing portion in the forming precision improving device.
  • FIG. 7 is an explanatory view showing an example of a pressure generating means in the forming precision improving device.
  • FIG. 8 is an explanatory view showing another example of the pressure generating means in the forming precision improving device.
  • FIG. 9 is a system diagram showing a pressure control means in the forming precision improving device.
  • FIG. 10A is a sectional view showing the operation of the first embodiment in a stepwise fashion, and showing a last stage state before the start of forming.
  • FIG. 10B is a sectional view showing the operation of the first embodiment in a stepwise fashion, and showing a state where a lower die and an upper die are matched together, and a wrinkle holding force is applied.
  • FIG. 10C is a sectional view showing the operation of the first embodiment in a stepwise fashion, and showing a last stage state where the lower die has ascended to perform forming.
  • FIG. 10D is a sectional view showing the operation of the first embodiment in a stepwise fashion, and showing a state where the forming is completed, and the upper die has ascended.
  • FIG. 11A is a sectional view showing a state of the forming precision improving device when the upper die has touched a wrinkle holder.
  • FIG. 11B is a sectional view showing a state of the forming precision improving device during forming.
  • FIG. 12 is an enlarged view of the state of FIG. 10B .
  • FIG. 13 is an enlarged view of the state of FIG. 10C .
  • FIG. 14 illustrates an example of a stroke and pressure diagram of a press to which the invention is applied.
  • FIG. 15 is a front view showing another example of a slide drive mechanism of a forming press unit.
  • FIG. 16A is a sectional view showing the operation when the slide drive mechanism of FIG. 15 is used, in a stepwise fashion, and showing a state before the start of forming.
  • FIG. 16B is a sectional view showing the operation when the slide drive mechanism of FIG. 15 is used, in a stepwise fashion, and showing a state where the lower die and the upper die are matched together, and the wrinkle holding force is applied.
  • FIG. 16C is a sectional view showing the operation when the slide drive mechanism of FIG. 15 is used, in a stepwise fashion, and showing a last stage state where the lower die has ascended to perform forming.
  • FIG. 16D is a sectional view showing the operation when the slide drive mechanism of FIG. 15 is used, in a stepwise fashion, and showing a state where the forming is completed, and the upper die has ascended.
  • FIG. 17 is a front view showing a second embodiment of the invention.
  • FIG. 18 is a partially enlarged view of FIG. 17 .
  • FIG. 19 is a plan view of the device of FIG. 17 .
  • FIG. 20A is a sectional view showing another aspect of the pressurizing portion and the pressing member in the second embodiment.
  • FIG. 20B is a plan view of FIG. 20A .
  • FIG. 21 is a front view showing an example in which the direction of the pressing member of the second embodiment is reversed.
  • FIG. 22 is a front view showing a third embodiment of the invention.
  • FIG. 23 is a sectional view taken along a X-X line of FIG. 22 .
  • FIG. 24A is a sectional view of a portion where adjustment pieces are used in the aspect of FIG. 22 .
  • FIG. 24B is a sectional view of a portion where the adjustment pieces are not used in the aspect of FIG. 22 .
  • FIG. 25 is a front view showing an example in which the direction of the pressing member of the third embodiment is reversed.
  • FIG. 26 is a partially enlarged view of FIG. 25 .
  • the device applying a pressing force to the upper die from its back for improvements in forming precision includes a disk-like base disposed between a lower surface of the slide and the upper die; a pressurizing portion built in the base; a pressing member having a pressing surface against the lower surface of the slide or the back surface of the upper die, and an opposite surface to the pressing surface facing the pressurizing portion; a pressure generating means disposed in a place outside the base to feed a pressurizing medium to the pressurizing portion; and a means disposed in a place outside the base to control the pressure of the pressurizing medium fed to the pressurizing portion from the pressure generating means.
  • the pressing member protrudes to powerfully press the lower surface of the slide or the back surface of the upper die by feeding a pressurizing medium to the pressurizing portion from the pressure generating means, and then concave deflection of the slide is corrected.
  • the slide and the upper die are brought close contact with each other, so that the forming force can be uniformly transmitted to a workpiece, and the pressure of the surfaces of the upper and lower dies which abut on the workpiece is equalized. For this reason, since a material flow state becomes uniform, the forming shape of a workpiece can be improved.
  • the force of the pressing member can be controlled according to a press stroke.
  • the wrinkle holding force to a workpiece can be controlled to an optimal magnitude, and the force of the pressing member is strengthened at a final forming stage, so that deflection of the slide can be corrected.
  • the base including the pressing member and the pressurizing portion becomes a flat unit, structure is easy, and installation to the press is also easy.
  • the pressurizing portion is composed of a chamber body and an elastic body built in the chamber body, or is composed of a chamber body and a fluid which fills the chamber body.
  • the pressure generating means has a servo motor as a driving source.
  • the pressure of the pressurizing portion which moves the pressing member can be freely controlled with precision, and optimal effects adapted to the degree of deflection, the material properties of workpieces, plate thickness, etc. can be obtained.
  • a sensor for adjusting the pressure to be fed to the pressurizing portion from the pressure generating means is interposed between the lower surface of the slide and the back surface of the upper die or between the base and the back surface of the upper die.
  • the invention includes an aspect in which the pressing member and the pressurizing portion are composed of fluid pressure cylinders, and these cylinders are disposed within the base at predetermined intervals.
  • the fabrication of the apparatus is easy. Further, if a plurality of rows of piston cylinders are disposed in the width direction of the chamber body, the deflection correction force and the wrinkle holding force can be adjusted more finely.
  • the pressing member has one disk shape with a size enough to cover a wrinkle holding region.
  • the pressing member has a first body in its central region, and a second body in a position corresponding to the wrinkle holding region, the pressurizing portion is composed of a first pressurizing portion corresponding to the first body, and a second pressurizing portion corresponding to the second body, and the pressure generating means is composed of a first pressure generating means for the first pressurizing portion, and a second pressure generating means for the second pressurizing portion.
  • pressurization for the wrinkle holder, and pressurization for deflection correction can be controlled independently, and an optimal wrinkle holding force, and optimal deflection correction of the slide can be realized according to a press stroke.
  • aspects of the above 2) includes a case where the first body has a disk shape, and the second has an annular flame shape in plan view, and a case where the first body has a disk shape, or the first body and the first pressurizing portion are composed of a plurality of fluid pressure cylinders which are connected with each other and are arranged at required intervals, and the second body and the second pressurizing portion are composed of a plurality of fluid pressure cylinders which are connected with each other and are arranged at required intervals.
  • control to an optimal wrinkle holding force adapted to properties and forming conditions of workpieces can be made.
  • the second body and the second pressurizing portion are composed of a plurality of fluid pressure cylinders which are connected with each other and disposed at required intervals, the magnitude of the wrinkle holding force can be adjusted locally and simply, and an optimal wrinkle holding force suited to the material, size, etc. of workpieces can be obtained.
  • the drive mechanism of the die-clamping press unit includes a digital system motor and links
  • the drive mechanism of the forming press unit includes a digital system motor and links
  • FIGS. 2 and 3 show a first aspect of an underdrive-type digital driving press according to the invention.
  • Reference numeral 1 represents a press frame which has a bed 1 a , a plurality of columns 1 b , and a crown 1 c .
  • the center of the bed 1 a is equipped with a forming press unit 2
  • the crown is equipped with a die-clamping press unit (upper press unit) 3 .
  • a bolster 4 is disposed on an upper surface of the bed.
  • the forming press unit (lower press unit) 2 includes a lower die A, a slide 2 a disposed in a hole in the bed, and a drive mechanism 2 b for raising or descending the slide.
  • a digital system motor 2 f such as a servo motor or a CNC motor, and a pair of right and left eccentric links 2 e which are driven by this motor are used.
  • the eccentric links 2 e have first levers 201 ends of which are respectively supported in eccentric positions of a pair of right and left rotating disks 200 and 200 , second levers 202 rear ends of which are linked to free ends of the first levers 201 and the other ends of which are linked to the slide 2 a , and third levers 203 rear ends of which are linked to the free ends of the first levers 201 and the other ends of which are fixed to the bed.
  • the rotating disks 200 and 200 have gears at their outer peripheries, respectively, and are adapted to be rotated in opposite directions by a large gear driven by a driving gear of the digital system motor 2 f , a small gear in the center of this large gear, and a small gear meshing with this small gear.
  • the lower die (punch) A is located at an upper surface of the bolster 4 , and the lower die A is linked with an upper portion of the slide 2 a via a linking block which extends via an opening of the bolster 4 .
  • An annular wrinkle holder 7 which places a plate-like workpiece W is fixed to the upper surface of the bolster 4 , and a distance block 8 which once catches an upper die B during the descent of the upper die, thereby regulating a stroke, is installed on the bolster outside the wrinkle holder 7 .
  • the distance block 8 may be formed in the shape of a frame on the whole and may be a plurality of split single bodies (columns or walls). However, in any case, the height of the distance block is set to a dimension which is equal to or moderately higher than a level in a state where the workpiece W is disposed on the wrinkle holder 7 before start of forming.
  • guide pins 21 are implanted at predetermined intervals around the linking block of the slide 2 a , and longitudinal holes 41 which allows insertion/removal of the guide pins 21 are disposed in the bolster 4 .
  • push-up pins 42 which are pressed by the guide pins 21 are inserted into the longitudinal holes 41 corresponding to a lower surface of the lower die A.
  • the die-clamping press unit 3 has a slide 3 d and a drive mechanism 3 b for raising or descending this slide.
  • the drive mechanism 3 b may be the same as the drive mechanism of the forming press unit 2 , it is preferable that high-speed descent and a large die-clamping force are obtained.
  • a pair of right and left toggle links 3 e and 3 e , and a digital system motor (for example, an AC servo motor, etc.) 3 f are used.
  • Each toggle link 3 e has a first link 301 one end of which is linked to a nut 300 which is screwed to a screw shaft 304 rotated by the motor 3 f , a second link 302 one end of which is linked to the crown, and a third link 303 one end of which is linked to the slide 3 d , and the other ends of the links are collected and linked together by pivots.
  • a means which exhibits a slide deflection correcting function or/and a wrinkle holding pressure-equalizing function for improvements in forming precision is provided in the die-clamping press unit 3 and its vicinity.
  • the slide 3 d of the die-clamping press unit 3 and a device 5 which applies a pressing force to the upper die B from behind after the last stage of the descent of the upper die B are provided. This significantly differs from a normal press in which an upper die (die) B is only fixed to the lower surface of the slide 3 d.
  • the device (hereinafter referred to as forming precision improving device) 5 has a main body interposed between the lower surface of the slide 3 d , and the upper die B.
  • the main body includes a disk-like relatively flat base 5 a , a pressurizing portion 5 b built in the base 5 a , and a pressing member 5 e an end surface of which faces the lower surface of the slide 3 d in this embodiment, and which has a portion below the slide built in the pressurizing portion 5 b so that it can ascend or descend.
  • a pressure generating means 5 c which supplies and discharges a pressurizing medium to and from the pressurizing portion 5 b , and a control means 5 f which controls the driving of the pressure generating means 5 c are provided.
  • the pressure generating means 5 c is loaded on, for example, the column 1 b.
  • the base 5 a functions as a base, it is made of a thick plate, etc. so as to have high strength and rigidity.
  • the portion of the base outside the pressurizing portion 5 b is suspended by a damper 3 g mounted on the slide 3 d so that there may be a moderate gap S from the lower surface of the slide 3 d in a normal state.
  • the clamper 3 g has an arm 31 with a hook which is engaged with and disengaged from a hanging portion provided at a side end of the base 5 a.
  • the upper die B is suspended by an L-shaped suspension means 11 fixed to an edge of the base 5 a , the upper die may be directly fixed to the base 5 a .
  • a guide 110 as shown in FIG. 4 may be attached so that any deviation may not occur in the horizontal direction of the upper die B.
  • the pressurizing portion 5 b is of a direct type in this embodiment. As shown in FIG. 5 , the pressurizing portion is formed inside the base 5 a as a relatively shallow flat chamber 5000 , and is adapted such that a pressurizing medium is directly introduced or discharged through a channel 52 provided in a proper place of the base 5 a . Although liquids, such as oil and water, are generally used as the pressurizing medium, gas is also used depending on circumstances.
  • the base 5 a is integrated, for example, by fastening the main body 50 and a lid 51 with a fixing element.
  • a recess 500 is formed in the main body 50
  • a recess which faces the recess 500 is formed in the lid 51 , thereby constituting a flat chamber.
  • the lid 51 is formed with an opening 511 which communicates with the recess but has a smaller width than the recess. Since the pressurizing medium is directly introduced or discharged through the channel 52 as mentioned above, a sealing member 5100 which touches a peripheral wall portion of the pressing member 5 e is attached along an inner wall surface of the opening 511 .
  • the pressing member 5 e is made of one disk-like body (plate) which has almost the same area as the area of the workpiece W in this embodiment.
  • the portion of the pressing member below a pressing end surface 520 is fitted into the opening 511 , and extends within the recess.
  • a lower end lateral portion of the pressing member is provided with a flange 521 which can contact with the top wall of the recess.
  • This flange and a ceiling wall are adapted to define a stroke ST to a range of, for example, 1 to 5 mm.
  • Arrows of FIG. 5 indicate a state where a pressurizing medium is injected into the chamber 5000 through the channel 52 , and thereby the pressing member 5 e protrudes and the end surface 520 presses the slide 3 d.
  • FIG. 6 shows an example of an indirect type which is constituted by a chamber 5000 defined by a recess, and an elastic body 5001 built in the chamber.
  • the elastic body 5001 is made of contractable or expandable material, such as rubber. An upper surface of the elastic body 5001 may be joined to the pressing member 5 e .
  • a flat bag is used as the elastic body 5001 a portion of which is connected to the channel 52 of the base 5 a via a joint.
  • the elastic body 5001 is not limited to a material as long as it is expanded by the pressure of the pressurizing medium to generate pressure, and liquid, pasty, or solid rubber may be used.
  • the pressure generating means 5 c is a means which makes a pressurizing medium, and feeds and discharges the medium through the channel 52 to and from the pressurizing portion 5 b .
  • a digital-controllable-type pressure generating means is used.
  • FIG. 7 shows a cylinder-type pressure generating means as an example of the pressure generating means 5 c .
  • a branch pipe 540 connected to a pressurizing-side outlet of a cylinder 55 is connected to a pipe 54 connected to the channel 52 via a pump 53 and a check valve.
  • a nut 56 is screwed to a screw 5501 of a piston rod 550 inserted into the cylinder 55 .
  • This nut 56 itself is connected with a rotational member (small pulley or pinion) 571 of an output part of a servo motor 57 by a transmission means, directly or via a rotational member (pulley or small gear) 560 for deceleration.
  • the output of the servo motor 57 is decelerated, and transmitted to the nut 56 , the piston rod 550 is moved by the rotation of the nut 56 , and thereby, the pressure of a system composed of the branch pipe 540 and the pipe 54 , which are filled with a fluid from the pump 53 in advance, is controlled toward its increased side or reduced side.
  • the pressure of the pressurizing portion 5 b is changed and the projecting force and pressing force of the pressing member 5 e changes.
  • the pressure generating means 5 c is not limited to the cylinder type.
  • FIG. 8 shows a pump-type pressure generating means. In this type, as the pump 53 is driven by the servo motor 57 , the internal pressure in the pipe 54 which leads to the channel 52 is controlled to its increased side or reduced side.
  • the pressure generating means includes the pump 53 which is interposed in the pipe 54 to supply a pressurizing medium, for example, pressure oil, to the pressurizing portion 5 b from a tank depending on the rotational direction, and on the contrary, returns the pressurizing medium to the tank from the pressurizing portion 5 b , and the servo motor 57 which drives the pump normally or reversely, and controls the force created by the pressurizing portion 5 b depending on the rotational direction, torque, and speed control.
  • a pressurizing medium for example, pressure oil
  • the pressing member 5 e ascends as the pressurizing medium within the tank is fed to the pressurizing portion 5 b through the pipe 54 and the channel 52 from the pump 53 by the normal direction driving of the servo motor 57 . Further, if the servo motor 57 is driven in the reverse direction, the pump 53 sucks the pressurizing medium of a pipe, and the oil in the pressurizing portion 5 b and pipe 54 is returned to the tank. Thus, the pressing member 5 e descends. Accordingly, the pressing force of the pressing member 5 e can be arbitrarily controlled with precision by the control of the torque and speed of the servo motor 57 .
  • the pressure control means 5 f is disposed as a control panel, etc. in a proper place in the vicinity of the bed, the column, etc. in order to control the driving of the pressure generating means 5 c .
  • the pressure control means 5 f as shown in FIG. 9 , is constituted as a computer including a controller like a CNC.
  • a sensor 5 g is attached to a central region between the lower surface of the base 5 a and the upper die B, or a predetermined part, such as a lateral part, and is electrically connected to the controller.
  • displacement sensors represented by a distortion sensor, a pressure sensor, etc. which can detect compression and tension, are used.
  • a position sensor may be used.
  • a pressure sensor 5 h is interposed in a system of the pressure generating means 5 c .
  • An output system of the pressure sensor 5 h and of the displacement sensor 5 g along with an output system of speed and torque of the servo motor 57 is connected to the controller.
  • the kinds, properties, processing conditions, etc., of workpieces are input to and stored in a computer, and instructions on rotational direction, speed, and torque are issued from the controller in response to calculated suitable conditions.
  • rotational frequency and torque are fed back to the controller from the output system of the servo motor 57 .
  • the actual deflection state (compression and tension) of the slide 3 d or the upper die B is detected by the sensor 5 g
  • cushion pressure is detected by the pressure sensor 5 h
  • the deflection state and cushion pressure are fed back to the controller. Accordingly, the rotational direction, speed, and torque which are sequentially compared with proper values, and calculated, and which are corrected if there is any difference will be ordered to the servo motor 57 .
  • FIGS. 10A to 10D , and FIG. 11A , FIG. 11B , FIG. 12 , and FIG. 13 show the operation of the press shown in FIG. 3 in a stepwise fashion
  • FIG. 14 shows a stroke and pressure diagram
  • FIG. 10A shows a state before start of processing.
  • the upper die B and the lower die A are at retreat limits. At this time, any deformation of the slide 3 d or the upper die B is not caused.
  • a distortion generation signal is not issued from the displacement sensor 5 g in the forming precision improving device 5 , but the pressure of the pressurizing portion 5 b is set to zero to low pressure.
  • a gap S exists between the upper surface of the base 5 a of the forming precision improving device 5 and the lower surface of the slide 3 d , as shown in FIG. 4 .
  • the workpiece w is mounted on the wrinkle holder 7 , and the upper end surface of the distance block 8 is at almost the same level as the upper surface of the workpiece W.
  • the slide 3 d and the upper die B are lowered, and as shown in FIG. 10B , the upper die B abuts on the wrinkle holder 7 and the distance block 8 .
  • the suspended base 5 a is pressed upward, and its upper surface touches the lower surface 320 of the slide 3 d .
  • the sensor 5 g detects this touch state, a signal is delivered from the control means 5 f which has received the detection signal, and the pressure generating means 5 c operates, and thereby, the pressurizing medium is fed to the pressurizing portion 5 b via the pipe 54 and the channel 52 .
  • the pressurizing portion 5 b is boosted to the pressure P 1 , as shown in FIG. 11B , the pressing surface 520 of the pressing member 5 e rises by a prescribed height, for example, 1 to 4 mm, from the level of the upper surface of the base. Thereby, a reaction force is applied to the upper die B. This state is shown in FIG. 10B and FIG. 12 . Since a uniform wrinkle holding force acts on the whole surface of the wrinkle holder 7 , the uniform wrinkle holding force is applied to the workpiece W between the upper die B and the wrinkle holder 7 .
  • the lower die A advances into the upper die B, and desired processing, for example, drawing is performed.
  • desired processing for example, drawing is performed.
  • the pressure generating means 5 c is operated by a signal from the control means 5 f , and the pressure P 2 higher than that at the time of the above touch is introduced into the pressurizing portion 5 b .
  • the output of the pressing member 5 e becomes strong, and as exaggeratingly shown in FIG. 13 , the pressure of the lower surface of the slide is intensified.
  • the slide 2 a is lowered by the rotation of Servo motor 2 f , and returns the lower die A to the position of the bolster.
  • a forming load is lost at this phase, and the deflection of the slide 3 d and the upper die B disappear.
  • the pressurizing portion 5 b is decompressed by the pressure generating means 5 c , and the pressing member 5 e is made to return to its original position.
  • the die-clamping press unit 3 is raised as shown in FIG. 10D and the slide 3 e has stopped at a top dead center, a formed product w′ is removed, and the processing process is completed.
  • wrinkle holding pressure is controlled by applying pressure to the pressing member 5 e via the pressurizing portion 5 b at the time of the touch of dies.
  • nonuniformity of the wrinkle holding force resulting from the deflection of the wrinkle holder can be canceled in cooperation with the fact that cushion pins are not used, and a uniform wrinkle holding state can be created.
  • deflection correction on the side of the slide can be properly performed by applying a pressure higher than the first step at the stroke end to the pressing member 5 e via the pressurizing portion 5 b .
  • re-striking forming is performed by applying the deflection correction pressure of P 2 at the stroke end. Accordingly, the precision of formed products can be significantly improved.
  • the pressure within the pressurizing portion 5 b can be freely controlled in an arbitrary position of the press by a digital control system, the torque of a servo motor, and speed control.
  • a digital control system the torque of a servo motor
  • speed control For example, if the rotational direction of the servo motor 57 is reversed by an instruction from a controller and the servo motor 57 is driven with the torque and rotational frequency according to processing conditions, in FIG. 7 , the piston 550 retreats to increase the cylinder volume.
  • the pump 53 makes reverse rotation to switch suction and discharge, and the pressure medium within the pipe 54 is returned to a tank according to torque and rotational frequency.
  • the pressure of the pressurizing portion 5 b becomes low, the pressing force of the pressing member 5 e is also reduced, the wrinkle holding force is relieved, and the cushion effect suitable for drawing is exhibited to fluidize a material. Further, deepening on the detection of the displacement sensor 5 g and the rotational direction, torque, and rotational frequency of the servo motor 57 corresponding thereto, the pressing force of the pressing member 5 e according to the deflection state of the press is adjusted.
  • the wrinkle holding pressure and deflection correction pressure can be controlled in a stepless fashion by the torque and rotational frequency of the servo motor 57 . That is, if the torque of the servo motor 57 is reduced, deceleration is made and if the torque is increased, acceleration is made. If the rotational frequency is small, the amount of the pressure medium returned to a cylinder or a tank decreases. Thus, the reduction in the pressure within the system of the pressurizing portion 5 b is small. Accordingly, the die cushion pressure or deflection correction pressure become relatively higher than a case where the rotational frequency of the servo motor is large.
  • the servo motor 57 is driven with a suitable value in the course of the forming stroke according to this property. Thereby, deflection can be corrected, and control to a uniform pressing force can be made. Further, wrinkle holding pressure can be smoothly controlled with high precision, and highly precise forming matched with processing conditions can be realized.
  • the overall height of the press can be reduced by processing stroke. Further, forming is performed by an underdrive method, using the lower forming press unit 2 , and is performed with the same minimum stroke length as the forming stroke. Therefore, energy saving can be achieved.
  • the driving of the forming press unit 2 transmits a vertical motion to the slide 2 a via the eccentric links 2 e with the digital system motor 2 f as a driving source, speed increase and large magnification ratio of a force can be obtained.
  • the drive mechanism 2 b is rotary, and does not have stop time. Thus, high cycle time of almost twice the SPM 15 - 18 of a conventional press is allowed.
  • FIG. 15 shows another example.
  • a pair of right and left toggle links 20 and a digital system motor 21 are provided.
  • the lower die A is located at the upper surface of the bolster 4 , and the slide 2 a is linked with the lower die A via the opening of the bolster 4 .
  • the toggle link 20 is composed of a pair of right and let links.
  • Each toggle link has a first link 201 one end of which is linked to a nut 200 which is screwed to a screw shaft 205 rotated by the digital system motor 21 , a second link 202 one end of which is linked to the bed, and a third link 203 one end of which is linked to the slide, and the other ends of the links are collected and linked together by pivots.
  • FIGS. 16A to 16D show a forming process when a toggle link is used as the drive mechanism 2 b in a stepwise fashion. Since the operation and effects of the press are the same as those described with reference to FIGS. 10A to 10D , the description thereof is omitted.
  • FIGS. 10 to 21 show the embodiment using another aspect as the forming precision improving device 5 .
  • the base 5 a as a main body of the forming precision improving device 5 is not different from that of the first embodiment in that the base is suspended by the clamper 3 g such that a gap S can be formed with respect to the slide 3 d.
  • the pressing member 5 e is split into a first body 5 e 1 in its central region, and a second body 5 e 2 in a position corresponding to a wrinkle holding region.
  • the pressurizing portion 5 b is constituted by a first pressurizing portion 5 b 1 corresponding to the first body, and a second pressurizing portion 5 b 1 corresponding to the second body.
  • the pressure generating means is constituted by a first pressure generating means 5 c 1 for the first pressurizing portion, and a second pressure generating means 5 c 2 for the second pressurizing portion.
  • the first pressing body 5 e 1 has a disk shape, and any of the structures shown in FIGS. 5 and 6 is adopted as the first pressurizing portion 5 b 1 .
  • the first pressure generating means 5 c 1 and the second pressure generating means 5 c 2 any of aspects in FIGS. 7 and 8 is adopted.
  • the first pressurizing portion 5 b 1 is connected with the first pressure generating means 5 c 1 by a channel 54 .
  • the second pressing body 5 e 2 is composed of a plurality of fluid actuators which are disposed at intervals, in this embodiment. That is, a number of fluid pressure cylinders each including a cylinder tube serving as a unit pressurizing portion, and a piston serving as a unit pressing member are arrayed in chambers provided at required intervals inside the base 5 a .
  • the fluid pressure cylinders are individually provided, or are arrayed in a chamber which is widely formed as a recess.
  • the pistons may be exposed to the upper surface of the base 5 a , or a lid or cover with a hole is mounted on every cylinder.
  • Each of the cylinder tubes of the fluid pressure cylinder group is connected by a communication channel (conduit) 542 and is connected to the pressure generating means 5 c 2 via a channel 54 ′.
  • FIG. 20A and FIG. 20B show another aspect of the second embodiment.
  • the second pressing body 5 e 2 is constructed as an annular frame as seen in plan view
  • the second pressurizing portion 5 b 2 is constructed as a chamber formed in the shape of an annular groove inside the base 5 a .
  • the second pressurizing portion 5 b 2 may be of a direct type as shown in FIG. 5 , or may be of an indirect type using an elastic body as shown in FIG. 6 .
  • the second embodiment also basically has the same effects as the first embodiment.
  • the pressing member 5 e and the pressurizing portion 5 b are a single combination. Therefore, the wrinkle holding force and deflection correction force which are obtained as a uniform force is applied to the whole pressing member 5 e will be created.
  • a pressing member 2 e is split into a first body 2 e 1 in its central portion or inner portion, and a second body 2 e 2 at its periphery (corresponding to each side of a product).
  • a pressurizing portion 2 b is also split into a first pressurizing portion 2 b 1 and a second pressurizing portion 2 b 2 .
  • the pressure of each set is individually controlled by the first pressure generating means 5 c 1 and the second pressure generating means 5 c 2 .
  • the second pressing body 2 e 2 projects will project by a required stroke to press the peripheral edge of the upper edge if only the second pressurizing portion 5 b 2 is pressurized by the second pressure generating means 5 c 2 .
  • a suitable wrinkle holding force can be created and controlled.
  • the first pressure generating means 5 c 1 is driven to set the pressure of the first pressurizing portion 2 b 1 to the pressure of P 2 .
  • FIG. 18 shows a state at this time.
  • a pressure medium is supplied to the first pressurizing portion 5 b 1 and the second pressurizing portion 5 b 2 simultaneously from the first pressure generating means 5 c 1 and the second pressure generating means 5 c 2 , to simultaneously moving the first pressing body 5 e 1 and the second pressing body 5 e 2 , and to generate a pressing force P 1 +P 2 of an equal or different magnitude, thereby creating the re-striking pressure. Improvements in forming precision, and energy saving can be achieved by such pressing.
  • the pressing surfaces of the first pressing body 5 e 1 and the second pressing body 5 e 2 face the lower surface of the slide 3 d .
  • the invention is not limited thereto.
  • the top and bottom of the apparatus may be reversed, and as shown in FIG. 21 , the pressing surfaces of the first pressing body 5 e 1 and the second pressing body 5 e 2 may be made to face the back surface of the upper die B.
  • the portion of the base outside the pressurizing portion 5 b may be firmly fixed to the slide 3 d and integrated with the slide 3 d , by bolting, etc.
  • FIG. 21 the portion of the base outside the pressurizing portion 5 b may be firmly fixed to the slide 3 d and integrated with the slide 3 d , by bolting, etc.
  • the first pressing body 5 e 1 and the second pressing body 5 e 2 are projected by the first pressurizing portion 2 b 1 and the second pressurizing portion 2 b , whereby pressing forces directly act on the back surface of the upper die B, and addition of the wrinkle holding pressure and deflection correction are performed.
  • FIGS. 22 to 26 show a third embodiment of the invention.
  • the pressing member 5 e has a first body 5 e 1 in its central region, and a second body 5 e 2 in a position corresponding to a wrinkle holding region.
  • the pressurizing portion 5 b is split into a first pressurizing portion 5 b 1 corresponding to the first body, and a second pressurizing portion 5 b 1 corresponding to the second body.
  • the pressure generating means is split into a first pressure generating means 5 c 1 for the first pressurizing portion, and a second pressure generating means 5 c 2 for the second pressurizing portion.
  • the second pressing body 5 e 2 is composed of a group of fluid-pressure cylinders disposed at intervals.
  • the first pressing body 5 e 1 which is the first pressing body 5 e 1 in the central region, and the first pressurizing portion 5 b 1 are also composed of a plurality of fluid pressure cylinders which are disposed at intervals.
  • a number of fluid pressure cylinders each including a cylinder tube serving as a unit pressurizing portion, and a piston serving as a unit pressing member are arrayed in chambers provided at required intervals inside the base 5 a .
  • the fluid pressure cylinders are individually provided, or are arrayed in a chamber which is widely formed as a recess.
  • Each of the cylinder tubes of the fluid pressure cylinder group is connected by a communication channel (conduit) 541 and is connected to the pressure generating means 5 c 1 via the channel 54 .
  • the first pressing body 5 e 1 and the second pressing body 5 e 2 are disposed such that their pressing surfaces face the upper die B.
  • the first pressing body 5 e 1 and the second pressing body 5 e 2 are disposed such that their pressing surfaces face the slide 3 d .
  • FIG. 26 shows FIG. 25 in partially enlarged manner. Since the other configurations and effects are the same as those of the second embodiment, the description thereof is omitted.
  • the first pressing body 5 e 1 and the second pressing body 5 e 2 are simultaneously moved at a stroke end, and a pressing force P 1 +P 2 of an equal or different magnitude is generated, thereby creating re-striking pressure.
  • a pressing force P 1 +P 2 of an equal or different magnitude is generated, thereby creating re-striking pressure.
  • the pressing members and the pressurizing portions are individually constructed (point group)
  • a fluid pressure cylinder group like the second embodiment or third embodiment
  • fine control of a wrinkle holding force or a deflection correction force can be made.
  • the fluid pressure cylinder group may be split into some groups, these groups may be connected together by conduits, and a pressure generating means may be connected to every group.
  • pressure receiving pieces 9 are disposed on the upper surface of the upper die including the regions which require the pressing by the pressing members.
  • the pressure receptacle pieces 9 are on the same axes as pistons, and receive the pressing by the stroke of the pistons.
  • the pressure receiving pieces are not arranged. Otherwise, the pressure receiving pieces which have different thicknesses according to the degree of necessity of a pressing force may be disposed.
  • the wrinkle holding force can be controlled locally, using the fluid pressure cylinder group of the same specification and without increasing the number of pressure generating means.
  • the pressing force of a straight line region can be made relatively high to obtain a strong wrinkle holding force, and the pressing force of a corner region can be made relatively and slightly low to weaken the wrinkle holding force slightly.
  • the same eccentric links as the forming press unit 2 may be used for the drive mechanism 3 b of the die-clamping press unit 3 .
  • a rotary single-action-type under drive press is obtained. It is needless to say that the forming precision improving device 5 is interposed and fixed between the slide of the die-clamping press unit and the upper die.
  • the forming precision improving device 5 itself can be used regardless of types of presses, can be applied to a general-purpose mechanical press, a hydraulic press, etc. as well as the link-type servo press shown as a prior art, and can be applied to a single-action-type press, or a double-action type press in the classification according to driving types.
  • an energy saving effect is large, and if the pressure generating means is also constructed like the embodiments, a relief valve is not used. Thus, heat is not generated within a hydraulic circuit, and the surge pressure when the slide and a die cushion collide with each other is low. Moreover, durability and load bearing properties are high.
  • the invention includes the following contents.
  • a forming precision improving device including, between a die and a lower surface of a slide capable of ascending or descending, a disk-like base, a pressurizing portion built in the base and connected to external pressure generating means and supply-pressure control means, and a pressing member having a pressing surface against the lower surface of the slide or the upper surface of the die, and facing the pressurizing portion on the side opposite to the pressing surface.
  • a forming method using a press including interposing between an upper die and a lower surface of a slide of a press, a device including a disk-like base, a pressurizing portion built in the base and connected to external pressure generating means, and a pressing member having a pressing surface against the lower surface of the slide or the upper surface of the die, and an opposite surface to the pressure surface facing the pressurizing portion, and setting the pressing force of the pressing member by the pressurizing portion in pressing a workpiece, i.e., a pressure P 1 at a stage where the slide descends and the upper dies abuts on the workpiece, and a pressure P 2 at a stage where the slide has arrived at a bottom dead center, to P 2 >P 1 .
  • the aspect 2) includes an aspect in which the pressure at a stage where the slide descends and the upper die has abutted on the workpiece is given to only the pressing member at its peripheral edge corresponding to the wrinkle holder, and the pressure P 2 at a stage where the slide has arrived at the bottom dead center is given to the pressing member in its central portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
US12/298,321 2006-05-09 2007-05-08 Underdrive-type press Abandoned US20090090161A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006130815 2006-05-09
JP2006-130815 2006-05-09
PCT/JP2007/059500 WO2007138820A1 (ja) 2006-05-09 2007-05-08 アンダードライブ式プレス

Publications (1)

Publication Number Publication Date
US20090090161A1 true US20090090161A1 (en) 2009-04-09

Family

ID=38778342

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/298,321 Abandoned US20090090161A1 (en) 2006-05-09 2007-05-08 Underdrive-type press

Country Status (8)

Country Link
US (1) US20090090161A1 (ru)
EP (1) EP2017071A4 (ru)
JP (1) JP5005683B2 (ru)
CN (1) CN101443183A (ru)
BR (1) BRPI0710220A2 (ru)
RU (1) RU2401714C2 (ru)
WO (1) WO2007138820A1 (ru)
ZA (1) ZA200809499B (ru)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110083487A1 (en) * 2009-10-13 2011-04-14 Ihi Corporation Die cushion device for press machine
US20110110392A1 (en) * 2008-07-16 2011-05-12 Rollax Gmbh & Co. Kg Method of Calibrating a Position Sensor in a Motor Vehicle Gear
US20130180301A1 (en) * 2010-08-15 2013-07-18 Schuler Pressen Gmbh Drawing press with stable metal sheet holder
US20130333437A1 (en) * 2010-10-21 2013-12-19 Schuler Pressen Gmbh Drawing Press With Dynamically Optimized Blank Holding
US20140137755A1 (en) * 2011-04-12 2014-05-22 Schuler Pressen Gmbh Method for operating a press with an underneath drive and press operated according thereto
WO2014149822A1 (en) * 2013-03-15 2014-09-25 Honda Motor Co., Ltd. Forming press
CN104401025A (zh) * 2014-11-14 2015-03-11 扬州固诚机床有限公司 一种活动式压力机
US20160136711A1 (en) * 2014-11-06 2016-05-19 Aida Engineering, Ltd. Press forming apparatus and press forming method for a semi-solid metal material
US20160347017A1 (en) * 2015-05-29 2016-12-01 Andritz Ag Device for compacting stacked sheets or pulp slabs
JP2017127894A (ja) * 2016-01-21 2017-07-27 コマツ産機株式会社 プレス装置
CN107030183A (zh) * 2016-12-14 2017-08-11 惠州市哈罗德科技有限公司 模压装置
US10322443B2 (en) 2014-08-27 2019-06-18 Benteler Automobiltechnik Gmbh Press-forming tool with tolerance compensation
EP3845324A4 (en) * 2018-08-31 2021-10-20 Daikin Industries, Ltd. COUSIN
CN114042818A (zh) * 2021-10-15 2022-02-15 东风本田汽车有限公司 汽车前地板拉延模具及加工方法
US11298736B2 (en) * 2017-09-12 2022-04-12 Aida Engineering, Ltd. Wrinkle generation detecting device, die cushion device and die protection device, and wrinkle generation detecting method, die cushion force automatic setting method and die protecting method
CN116727542A (zh) * 2023-07-10 2023-09-12 济南二机床集团有限公司 一种具有能量可回收功能的模具缓冲装置

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010008255A1 (de) * 2010-02-17 2011-08-18 GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Mich. Presse und Betriebsverfahren dafür
DE102010037950B4 (de) * 2010-10-04 2013-04-18 Schuler Pressen Gmbh Ziehpresse mit statischer Blechhaltung
JP5528984B2 (ja) 2010-10-19 2014-06-25 アイダエンジニアリング株式会社 機械プレスのプレス荷重制御装置
ITMI20120197A1 (it) * 2012-02-14 2013-08-15 Cesare Galdabini S P A Pressa per stampare, e in particolare imbutire, lamiere
DE102012109150A1 (de) * 2012-09-27 2014-03-27 Schuler Pressen Gmbh Verfahren und Einrichtung zum Betreiben einer Werkzeugmaschine wie Presse mit linear bewegbarem Hubelement
CN103170566A (zh) * 2013-03-13 2013-06-26 华南理工大学 普通压力机伺服调速模锻装置
TWI579069B (zh) * 2014-03-20 2017-04-21 Displacement compensation and feedback system
CN104841832B (zh) * 2015-06-15 2017-02-08 吴丽清 一种用于锻造金属器件的电机锻造装置
CN105057447B (zh) * 2015-07-26 2017-03-22 中山市广恒合优科技发展有限公司 一种生产效率高的冲压机
CN105538571B (zh) * 2016-01-21 2018-01-19 合肥良骏汽车材料有限公司 汽车内饰件成型液压机
CN106734527B (zh) * 2016-12-14 2019-04-26 新昌县长城空调部件股份有限公司 冲孔机
CN106827613A (zh) * 2017-04-14 2017-06-13 沃得精机(中国)有限公司 一种下传动伺服压力机
CN107139515A (zh) * 2017-04-21 2017-09-08 沃得精机(中国)有限公司 一种伺服压力机
CN107608304A (zh) * 2017-09-18 2018-01-19 北京首钢自动化信息技术有限公司 一种汽车板翻转机夹紧控制装置及其方法
CN108904288B (zh) * 2018-07-20 2020-08-25 安徽长江药业有限公司 一种圆形药片压型装置
CN110280630A (zh) * 2019-07-22 2019-09-27 南京邮电大学 三自由度曲柄连杆机械式全电伺服数控板料折弯机
CN112820667B (zh) * 2021-01-04 2022-05-17 深圳市铨天科技有限公司 一种用于储存芯片的压固机加工设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615204A (en) * 1983-12-28 1986-10-07 Nissan Motor Company, Ltd. Drawing apparatus of the double action and lower punch slide type
US20060201226A1 (en) * 2005-03-12 2006-09-14 Uhlmann Pac-Systeme Gmbh & Co. Kg Press-actuation system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217172A (en) * 1935-06-29 1940-10-08 Birdsboro Steel Foundry & Mach Drawing press and process
CH638410A5 (en) * 1979-01-05 1983-09-30 Aluminiumwerke Ag Rorschach Deep-drawing tool
JPS5947028A (ja) * 1982-09-13 1984-03-16 Nissan Motor Co Ltd 逆絞りプレス型
JPS60174219A (ja) * 1984-02-17 1985-09-07 Nissan Motor Co Ltd 逆絞りプレス装置
JPS63157428U (ru) * 1987-04-03 1988-10-14
JP2001300778A (ja) 2000-04-14 2001-10-30 Amino:Kk リンク式サーボプレス
JP3910514B2 (ja) * 2002-09-25 2007-04-25 本田技研工業株式会社 プレス機械のクッション装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615204A (en) * 1983-12-28 1986-10-07 Nissan Motor Company, Ltd. Drawing apparatus of the double action and lower punch slide type
US20060201226A1 (en) * 2005-03-12 2006-09-14 Uhlmann Pac-Systeme Gmbh & Co. Kg Press-actuation system

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110110392A1 (en) * 2008-07-16 2011-05-12 Rollax Gmbh & Co. Kg Method of Calibrating a Position Sensor in a Motor Vehicle Gear
US8662744B2 (en) * 2008-07-16 2014-03-04 Rollax Gmbh & Co. Kg Method of calibrating a position sensor in an automotive transmission
US20110083487A1 (en) * 2009-10-13 2011-04-14 Ihi Corporation Die cushion device for press machine
US9132463B2 (en) * 2009-10-13 2015-09-15 Ihi Corporation Die cushion device for press machine
US20130180301A1 (en) * 2010-08-15 2013-07-18 Schuler Pressen Gmbh Drawing press with stable metal sheet holder
US10160023B2 (en) * 2010-08-16 2018-12-25 Schuler Pressen Gmbh Drawing press with stable metal sheet holder
US9713832B2 (en) * 2010-10-21 2017-07-25 Schuler Pressen Gmbh Drawing press with dynamically optimized blank holding
US20130333437A1 (en) * 2010-10-21 2013-12-19 Schuler Pressen Gmbh Drawing Press With Dynamically Optimized Blank Holding
US20140137755A1 (en) * 2011-04-12 2014-05-22 Schuler Pressen Gmbh Method for operating a press with an underneath drive and press operated according thereto
US10000032B2 (en) * 2011-04-12 2018-06-19 Schuler Pressen Gmbh Method for operating a press with an underneath drive and press operated according thereto
WO2014149822A1 (en) * 2013-03-15 2014-09-25 Honda Motor Co., Ltd. Forming press
US10377103B2 (en) 2013-03-15 2019-08-13 Honda Motor Co., Ltd. Forming press
US9387529B2 (en) 2013-03-15 2016-07-12 Honda Motor Co., Ltd. Forming press
US10322443B2 (en) 2014-08-27 2019-06-18 Benteler Automobiltechnik Gmbh Press-forming tool with tolerance compensation
US9993866B2 (en) * 2014-11-06 2018-06-12 Aida Engineering, Ltd. Press forming apparatus and press forming method for a semi-solid metal material
US20160136711A1 (en) * 2014-11-06 2016-05-19 Aida Engineering, Ltd. Press forming apparatus and press forming method for a semi-solid metal material
CN104401025A (zh) * 2014-11-14 2015-03-11 扬州固诚机床有限公司 一种活动式压力机
US20160347017A1 (en) * 2015-05-29 2016-12-01 Andritz Ag Device for compacting stacked sheets or pulp slabs
JP2017127894A (ja) * 2016-01-21 2017-07-27 コマツ産機株式会社 プレス装置
CN107030183A (zh) * 2016-12-14 2017-08-11 惠州市哈罗德科技有限公司 模压装置
US11298736B2 (en) * 2017-09-12 2022-04-12 Aida Engineering, Ltd. Wrinkle generation detecting device, die cushion device and die protection device, and wrinkle generation detecting method, die cushion force automatic setting method and die protecting method
EP3845324A4 (en) * 2018-08-31 2021-10-20 Daikin Industries, Ltd. COUSIN
CN114042818A (zh) * 2021-10-15 2022-02-15 东风本田汽车有限公司 汽车前地板拉延模具及加工方法
CN116727542A (zh) * 2023-07-10 2023-09-12 济南二机床集团有限公司 一种具有能量可回收功能的模具缓冲装置

Also Published As

Publication number Publication date
BRPI0710220A2 (pt) 2011-08-02
EP2017071A4 (en) 2010-12-01
CN101443183A (zh) 2009-05-27
RU2008148309A (ru) 2010-06-20
JPWO2007138820A1 (ja) 2009-10-01
ZA200809499B (en) 2009-12-30
WO2007138820A1 (ja) 2007-12-06
JP5005683B2 (ja) 2012-08-22
RU2401714C2 (ru) 2010-10-20
EP2017071A1 (en) 2009-01-21

Similar Documents

Publication Publication Date Title
US20090090161A1 (en) Underdrive-type press
US6216508B1 (en) Apparatus for dieless forming plate materials
US7765848B2 (en) Press working method and press working apparatus
US6006567A (en) Apparatus and method for hydroforming
EP0867271B1 (en) Hydraulic press for forming metal plates
US5288440A (en) Method and apparatus for controlling powder molding press
CN111195673B (zh) 一种变截面异形管件的充液压制成形装置
US7152444B2 (en) Press-forming machine
JP2007075846A (ja) プレスのダイクッション装置
JP2007160319A (ja) プレス用ダイクッション装置
JPH10249590A (ja) サーボモータ駆動のリンクモーションプレスおよびそ のプレス制御方法
JP2002219600A (ja) コンピュータ数値制御プレス装置
US20070113613A1 (en) Die cushion apparatus of press machine
EP1104688A1 (en) Method and Apparatus for simultaneously performing multiple hydroforming operations
EP1080803A2 (en) Mechanical press adapted to perform hydroforming operations
JP2008173678A (ja) プレス成形装置
CN105899307B (zh) 用于形成金属片工件的装置
EP0549955A1 (en) Method of the fluidised bed type for the shaping of sheet metal
JP4171435B2 (ja) 機械プレスの制御方法及びその制御装置
Sawant et al. Design and Analysis of Ejection Pin System for 1500T Press
JP7068394B2 (ja) プレス機械及びそれを用いたワークのプレス方法
CN115921652B (zh) 一种拉深胀形一体化模具及其成型方法
JP3558773B2 (ja) 超塑性成形装置
JP3022140B2 (ja) 対向液圧成形装置
JPH08132299A (ja) プレス装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: AMINO CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMINO, HIROYUKI;REEL/FRAME:021730/0492

Effective date: 20080812

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION