EP1345715A1 - Presse a forger dotee d'un dispositif de reglage situe cote matrice - Google Patents

Presse a forger dotee d'un dispositif de reglage situe cote matrice

Info

Publication number
EP1345715A1
EP1345715A1 EP01985418A EP01985418A EP1345715A1 EP 1345715 A1 EP1345715 A1 EP 1345715A1 EP 01985418 A EP01985418 A EP 01985418A EP 01985418 A EP01985418 A EP 01985418A EP 1345715 A1 EP1345715 A1 EP 1345715A1
Authority
EP
European Patent Office
Prior art keywords
forging press
die
press according
wedge
adjusting
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.)
Granted
Application number
EP01985418A
Other languages
German (de)
English (en)
Other versions
EP1345715B1 (fr
Inventor
Luc Hoorelbeke
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.)
Nedschroef Herentals NV
Original Assignee
Nedschroef Herentals NV
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 Nedschroef Herentals NV filed Critical Nedschroef Herentals NV
Publication of EP1345715A1 publication Critical patent/EP1345715A1/fr
Application granted granted Critical
Publication of EP1345715B1 publication Critical patent/EP1345715B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B21J13/03—Die mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/14—Ejecting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/022—Special design or construction multi-stage forging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/02—Feeding devices for rods, wire, or strips
    • B21K27/04—Feeding devices for rods, wire, or strips allowing successive working steps

Definitions

  • the invention relates to improvements in the adjustment of tools of forging presses.
  • a workpiece is brought to the desired shape by shaping, in that it is pressed so strongly between a stationary die and a movable die that the desired shaping takes place.
  • the punch When the machine is in operation, the punch is usually not moved up to the die as far as it will go, but only up to a so-called closing height distance, which of course is decisive for the deformation result.
  • this closing height distance must be adjustable, that is to say it can be adjusted subsequently.
  • the closing height distance is a distance measured in the longitudinal direction, that is to say in the direction of the press stroke, this has so far been solved by the fact that on the side of the movable die, that is to say the impact side of the machine, an adjusting device is provided, which pushes an adjusting wedge in the wedge direction, transversely to the longitudinal direction, more or less far between the punch and the rest of the movable carriage carrying the punch.
  • the stroke of the slide drive which is always the same, is not changed on the side of the plunger with regard to the lifting height, but it does change with regard to the longitudinal position in the two reversal points, and thus also the closing height distance with respect to the fixed die.
  • the entire adjusting device is located in the moving part of the machine, the impact side, and not in the stationary support side, which is disadvantageous due to the high acceleration forces (approx. 300 strokes per minute) and also has the disadvantage that not only stopped the machine to repair, but u. U. also the entire slide must be removed, which causes high production downtimes.
  • the adjusting device is not housed in the impact side, but in the support side of the machine, it is exposed to considerably lower loads during the operation of the machine and, accordingly, has to be serviced or replaced less frequently.
  • This solution is particularly suitable for horizontal transfer presses, in which the longitudinal direction of the machine, the lifting direction, is arranged horizontally, and which are integrated in a transfer line, so that the workpieces are transported transversely to the longitudinal direction of the individual machine from one processing station to the next are by means of a transfer device.
  • the transport from one forging position to the next, possibly within the same machine, can be carried out in another tool if the machine comprises several tools, that is to say dies and punches, next to one another.
  • the solution is also particularly suitable for forging presses that do not use continuous material, e.g. B. wire material is worked, but the raw parts are used individually before each forming process in the machine, that is, in the die, which usually also happens automatically by means of a transfer device.
  • continuous material e.g. B. wire material is worked
  • the raw parts are used individually before each forming process in the machine, that is, in the die, which usually also happens automatically by means of a transfer device.
  • the position of the front end face, the so-called stop surface, facing the punch is determined in the longitudinal direction by means of the adjusting device, in that the die block, in which the die is fixed, and which is supported indirectly with respect to the base body of the machine, more or less by this is spaced.
  • the spacing is preferably changed by inserting a wedge more or less far in the wedge direction and transversely to the longitudinal direction, the lifting direction, this wedge preferably being supported on an analog, opposite, equally steep counter surface of a counter wedge.
  • the die block together with the die is pre-tensioned in the longitudinal direction against the wedge and thus with as little play as possible with respect to the base body.
  • this pretension which is usually implemented via a lever mechanism and a hydraulic cylinder, has to be at least partially removed in order not to let the displacement force become too high.
  • the adjustment is preferably carried out by means of a motorized spindle running in the direction of adjustment of the wedge, which preferably engages from the underside, particularly in the case of horizontal transfer presses, while the workpiece is fed from the top.
  • the threaded spindle runs u. a. through a hydraulically clampable nut, which is left in the clamped state during the forging operation of the machine in order to fix the threaded spindle.
  • the disadvantage of such an arrangement of the first adjusting device on the support side, namely behind the die is the fact that by changing the longitudinal position of the front stop surface of the die, the distance between this front stop surface and the rear stop for the workpiece is also which is provided by a part which is adjusted in the base body of the machine and which projects into the die from behind is changed.
  • This change also causes a change in the shank length L1 that has not been changed by reshaping of the workpiece to be manufactured, for example if round material cut from pieces by inserting it into the die and protruding from its front stop surface by means of the punch is intended to form the screw head on the blank, since then the distance between the front stop surface and the rear stop, the shaft length of the subsequent screw, on which the thread is subsequently rolled or pressed, is changed.
  • the rear stop with respect to the base body is not only adjustable, which is necessary in any case for the changeover from one workpiece to the other, but rather its second adjusting device is coupled to the first adjusting device such that when the closing height is adjusted.
  • Distance by means of the first adjusting device, the second adjusting device is automatically adjusted analogously so that the shaft length, that is to say the distance between the front stop surface and the rear stop, remains unchanged.
  • the second adjusting device also comprises a threaded spindle for the adjustment, which can also be screwed into the base body, but this time in the longitudinal direction.
  • a coupling of the two adjusting devices is possible, for example, in that both threaded spindles are each driven by an electric motor, for example a servo motor, and can be controlled by means of a common or two individual, functionally linked controls.
  • an electric motor for example a servo motor
  • a purely mechanical coupling of the two adjusting devices, in particular their threaded spindles is also possible in that one and the same motor or a manual drive adjusts the two threaded spindles in the correct relationship to one another.
  • a decoupling option in the form of a clutch must be available in order to be able to adjust one of the two adjusting devices, in particular the second adjusting device, separately.
  • Another problem is the transfer device, which usually grips the workpiece by means of grippers immediately in front of the front end of the front stop surface of the die and transports it to the next processing station. By changing this front stop surface, its relative position (distance s) to the transfer device could also be changed.
  • the transfer device is mounted on the base body, but is either adjustable and is displaced by means of an adjusting device, in particular directly by means of the second adjusting device for displacing the stop, or is fixed, with a sufficiently large distance s.
  • the tensioning device for tensioning and releasing the die block can also be equipped with a further tensioning device for tensioning and releasing the transfer device with respect to the base body, or tensioning or releasing it in addition to the die block.
  • Fig. 1 a schematic diagram of a solution of the prior art, looking transversely to the stroke direction of the machine; 2a, 2b: a solution according to the invention in the same viewing direction;
  • FIG. 5 shows the transfer device according to FIG. 4 viewed transversely to the stroke direction.
  • Fig. 1 shows a forging press according to the prior art, in which a workpiece 7 between a die 2 and a movable punch 1 is formed by pressing.
  • the die 2 is received in the fixed part of the machine, the support side 100.
  • the plunger 1, on the other hand, is part of the carriage 3, which is driven to move in the stroke direction of the press, the longitudinal direction 10, on the impact side 101 of the machine.
  • the carriage 3 is driven oscillating in the longitudinal direction 10 - as shown in the left part of FIG. 1 - via a lever mechanism, the design of the workpiece, in this case a screw head, primarily depending on the flow height distance h, i.e. what distance the punch 1 in the reversal point of its movement in the longitudinal direction 10 from the die 2, that is, its front stop surface 2a.
  • a wedge 6 was introduced transversely to the longitudinal direction 10 between the punch 1 and the body of the slide, with further components which are unchangeable in length being arranged between the wedge 6 and the punch 1.
  • the closing height distance h and thus in this case the head height h1 of the screw head to be produced can be varied in that the wedge 6 is inserted and fixed more or less far in the transverse direction, which is also achieved by means of the Direction of insertion of the adjusting bolt 4 happens.
  • the actuating device 5 comprising the wedge 6 is located on the slide 3, that is to say the part of the forging press that oscillates at high frequency, which, particularly in the case of a motor-driven actuating device, that is to say a motor drive for the wedge 6, exposes this drive to high loads.
  • FIG. 2a and 2b therefore show a solution of a forging press according to the invention in the same view, with primarily the impact side 101 of FIG. 2a and the supporting side 100 of the forging press being shown primarily in FIG. 2b, between which the one shown in FIG. 3 is shown separately Workpiece should be.
  • This workpiece is a screw blank with a head, the shaft length of which should be L1 and the head height of which should be a1 in the same direction, namely in the longitudinal direction of the screw and also of the machine.
  • the support side 100 of the machine according to FIG. 2a differs from the known solution according to FIG. 1 only in that the slide 3 no longer comprises an adjusting device for changing the longitudinal position of the stamp 1 relative to the slide 3, but rather the stamp 1 directly in a stamp block is received and fixed, which is moved with the carriage 3.
  • FIG. 2b shows the support side 100 of the forging press separately, with an inserted and already shaped workpiece 7, that is to say after the shaping.
  • the workpiece 7 is received with its shank in a corresponding bore in the die 2.
  • the rear free end of the shaft is supported on a drive pin 21 which projects from the rear into the bore of the die 2 up to a predetermined position, and thereby forms a stop 28 for the rear end of the workpiece 7.
  • the front free end of the blank is acted upon by the punch 1, which is not visible in FIG. 2b, that is to say from the left as shown in FIG. 2a, and is deformed in such a way that widening of the head of the blank occurs and against the front end face, the stop face 2a the die 2 is pressed.
  • the die 2 is received in a die block 15, which is closed on the back by a screwed-on block cover 15a, which likewise has a through opening aligned with the bore of the die 2.
  • the entire die block 15, including the block cover 15a, is supported indirectly with respect to the base body 9 located behind it, specifically via a support plate 16 which, in contrast to the base body 9, can therefore be replaced as a wearing part.
  • the adjusting device 5 for the adjustment of the longitudinal position of the die 2, that is to say its front stop surface 2a with respect to the base body 9, is arranged.
  • This adjusting device 5 consists of a wedge 6, the wedge shape of which extends in the direction of insertion, which is transverse to the longitudinal direction 10 and thus the lifting direction of the machine, so that the longitudinal position of the component supported on the wedge due to the wedge effect due to the transverse position of the wedge 6, and the like , a. the die 2 and thus also its front stop surface 2a is determined.
  • the wedge 6 in turn is supported with its wedge surface lying obliquely to the radial plane on an analog opposing, fixedly positioned counter wedge 19 which is supported with its rear side on the support plate 16.
  • Wedge 6, counter wedge 19 and support plate 16 are - like the base body 9 - flush with a through opening to feed the ejection pin 21, which not only represents the stop for the workpiece during the forming process, but should also subsequently eject the workpiece enable.
  • the wedge 6 is adjusted via a threaded spindle 33 which is screwed through a threaded hole in the base body 9 and with its head is rotatable in the wedge 6, but axially fixed, and can therefore move it in the direction of displacement.
  • the rear end of the threaded spindle 33 protrudes from the bottom of the base body 9 and is driven there by a servo motor 11 via a gearwheel 30 non-rotatably connected to the threaded spindle 33 via a plurality of gearwheels arranged therebetween.
  • a further gear 32 meshes with the gear 30, the axis of rotation of which is parallel to that of the threaded spindle 33 and the axial extent of which is as large as the adjustment range of the threaded spindle 33, so that the gear 30 always meshes with this gear 32 despite the longitudinal screw connection.
  • the motor sits at right angles to the threaded spindle 33 and therefore not far below the lower end of the base body 9, so that its height is not unnecessarily increased.
  • a position sensor 12 is connected to the servo motor 11, which determines the axial position of the threaded spindle 33 continuously or at regular time intervals or only on request, based on a known starting position and counting of the rotations or angular changes of the servo motor 11 that have occurred in the meantime.
  • the ejection pin 21 is used, which is inserted from the rear into the corresponding through bore of the die 2, which is usually the diameter of the other side corresponds to the workpiece to be inserted into the die.
  • the push pin 21 must above all in its retracted position, in which its front end as a stop 28 for the to be inserted
  • Workpiece 7 is used, can be adjusted precisely. This position is shown in Fig. 2b. In contrast, to the left in a not shown in Fig. 2 shifted position of the pressure pin 21, this can be moved forward so far that its front end reaches or almost reaches the front stop surface 2 of the die.
  • the pressure pin 21 is equipped at its rear end with a cylindrical widened head 31 which is guided in a corresponding pin bushing 23 in the longitudinal direction 10, which also penetrates the block cover 15a.
  • the forging press that is to say in the retracted position of the ejection pin 21 and also of the machine pin 22, the latter rests against the threaded bushing 8 with its rear shoulder 22a.
  • both are pushed forward in the longitudinal direction by means of an ejector which is guided inside the threaded bushing 8 and acts on the machine pin 22 from the rear in the longitudinal direction.
  • the threaded bushing 8 can be screwed in the longitudinal direction by means of its external thread in a corresponding internal thread of the base body 9.
  • the screwable threaded bushing 8, via which the stop position of the pressure pin 21 is divided, is part of the second adjusting device 5 '.
  • the threaded bushing 8 is in turn driven, as in the first adjusting device 5 for adjusting the position of the wedge 6, via gearwheels and a servo motor 13 and an associated position transmitter 14, which are arranged behind the rear end of the base body 9. Since a deflection of the drive train by 90 ° is not necessary, no bevel gears are installed in the drive train.
  • the die block 15, including its block cover 15a, is pressed via a clamping device 29 for forging operation in the longitudinal direction and against the wedge 6 supported on the base body 9 and transversely thereto corresponding stop surfaces of the base body 9, so that there is always a defined position of the die 2 in forging operation.
  • a hydraulic piston 18 pulls on a lever to which a further lever 17 is attached eccentrically, which is rotatably mounted on the one hand about an axis 24 of the die block 15 and on the other hand about a bolt 26 of the first lever and the first lever is additionally around one Block bolt 27 of the die block 15 is pivotally attached. All pivot axes run transversely to the longitudinal direction 10 and are aligned parallel to one another.
  • the clamping device 29 the die block 15 is clamped against the base body 9 or the wedge 6 as described above, and this clamping device is released only for adjusting the wedge 6.
  • FIG. 5 shows - in the direction of view analogous to FIGS. 1 or 2 - a transfer device 42 which is arranged above the base body and above the workpiece 7 not shown in FIG. 5. 5, the push-out pin 21 is shown in its advanced position, the push-out position.
  • the transfer device is used to grasp and remove the workpiece by means of two grippers 40, 41 which are pivotably arranged on the transfer device 42 and which together form a pair of pliers, for example to a next, adjacent processing station and / or to insert a new blank.
  • the transfer device 42 can be moved in the transverse direction above the base body 9 and preferably comprises - as the illustration in FIG. 4a shows with open grippers with a view in the longitudinal direction - at least two or more pairs of grippers in order to be able to carry out the unloading and loading at the same time ,
  • the grippers 40, 41 are so long that they can hold the workpiece 7 between them with their free ends, in the open state the grippers 40, 41 pivot about their above the workpiece, especially above the Basic body 9, arranged pivot axes, however, so far that the free ends of the grippers 40, 41 do not extend down to the die 2 above the highest point, namely a tangent 20 ′ running horizontally in the transverse direction.
  • the grippers 40, 41 - as can best be seen in FIG. 5 - are positioned directly in front of the front end of the die 2, that is to say in front of its front stop surface 2a.
  • the distance s between the front end face 2a of the die 2 and the grippers must be set so that when the die 2 is adjusted by means of the wedge, there is no collision with the grippers.
  • the second adjusting device 5 not only shifts the push-out pin 21, but also the transfer device 42 in the longitudinal direction.
  • transfer device 42 there is a third actuating device, not shown, analogous to the second actuating device 5 'and acting in the same direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Control Of Presses (AREA)

Abstract

La présente invention concerne une presse à forger dans laquelle le réglage des positions d'outil les unes par rapport aux autres peut s'effectuer rapidement et facilement, pour des coûts de construction réduits, notamment en raison d'une bonne accessibilité, et ayant en particulier une faible sensibilité aux parasites. Ladite presse comprend: un côté support (100) fixe lors du processus de déformation et comprenant une matrice (2); un côté butée (101) comprenant un coulisseau (3) doté d'un poinçon (1), ledit coulisseau pouvant se déplacer en direction longitudinale lors du processus de déformation; et un premier dispositif de réglage (5) servant à régler la distance de hauteur de fermeture, le premier dispositif de réglage étant disposé sur le côté butée de la presse à forger.
EP01985418A 2000-12-18 2001-12-17 Presse a forger dotee d'un dispositif de reglage situe cote matrice Expired - Lifetime EP1345715B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10063154 2000-12-18
DE10063154A DE10063154B4 (de) 2000-12-18 2000-12-18 Schmiedepresse mit Stellvorrichtung auf Matrizenseite
PCT/EP2001/014905 WO2002049788A1 (fr) 2000-12-18 2001-12-17 Presse a forger dotee d'un dispositif de reglage situe cote matrice

Publications (2)

Publication Number Publication Date
EP1345715A1 true EP1345715A1 (fr) 2003-09-24
EP1345715B1 EP1345715B1 (fr) 2004-11-03

Family

ID=7667697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01985418A Expired - Lifetime EP1345715B1 (fr) 2000-12-18 2001-12-17 Presse a forger dotee d'un dispositif de reglage situe cote matrice

Country Status (10)

Country Link
US (1) US7082807B2 (fr)
EP (1) EP1345715B1 (fr)
JP (1) JP2004520164A (fr)
AT (1) ATE281258T1 (fr)
BR (1) BR0115705A (fr)
CA (1) CA2424367C (fr)
DE (2) DE10063154B4 (fr)
ES (1) ES2230380T3 (fr)
TW (1) TW544350B (fr)
WO (1) WO2002049788A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100464894C (zh) * 2005-04-05 2009-03-04 运通工业股份有限公司 锻造部件成型机的可调整进料长度的进料装置
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
WO2012124199A1 (fr) * 2011-03-14 2012-09-20 東洋機械金属株式会社 Machine à mouler à injection verticale
TWI464049B (zh) * 2012-07-26 2014-12-11 Techwin Opto Electronics Co Ltd Injection Molding Machine Lever Mold Extrusion Mechanism

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US1718265A (en) * 1924-03-13 1929-06-25 Ward William Lukens Bolt-heading machine
US3559446A (en) 1968-03-29 1971-02-02 Nat Machinery Co The Forging machine
US3599446A (en) * 1969-03-21 1971-08-17 Reid Meredith Inc Terry knit fabric, machine and method of producing same
US4137748A (en) * 1977-09-28 1979-02-06 The National Machinery Company Wedging structure for presses or the like
US4170051A (en) * 1977-10-25 1979-10-09 Textron Inc. Hydraulic and mechanical punch holder adjustment
JPS5994549A (ja) * 1982-11-20 1984-05-31 Sakamura Kikai Seisakusho:Kk ホ−マにおける自動段取替え装置
US4791803A (en) 1985-11-28 1988-12-20 Hatebur Umformmaschinen Ag Die-change device for a multi-stage forming machine
DE3806352A1 (de) * 1988-02-27 1989-09-07 Schuler Gmbh L Vorrichtung zum auswerfen von werkstuecken aus matrizen in einer umformpresse
US4966028A (en) * 1988-11-14 1990-10-30 Kabushiki Kaisha Sakamurakikai Seisakusho Multi-stage cold forging machine
JP2870141B2 (ja) * 1990-07-16 1999-03-10 旭サナック株式会社 ヘツダー
JP3393010B2 (ja) * 1996-05-09 2003-04-07 株式会社阪村機械製作所 圧造成形機におけるパンチの取付位置調整装置
US5704245A (en) * 1996-05-31 1998-01-06 The National Machinery Company Progressive forging machine with individually adjustable tools

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See references of WO0249788A1 *

Also Published As

Publication number Publication date
DE10063154A1 (de) 2002-06-27
DE10063154B4 (de) 2005-02-10
TW544350B (en) 2003-08-01
US20040040362A1 (en) 2004-03-04
EP1345715B1 (fr) 2004-11-03
US7082807B2 (en) 2006-08-01
ATE281258T1 (de) 2004-11-15
CA2424367A1 (fr) 2003-03-28
JP2004520164A (ja) 2004-07-08
BR0115705A (pt) 2003-09-02
CA2424367C (fr) 2007-10-02
DE50104436D1 (de) 2004-12-09
ES2230380T3 (es) 2005-05-01
WO2002049788A1 (fr) 2002-06-27

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