EP0751842B1 - Doppelpresse - Google Patents
Doppelpresse Download PDFInfo
- Publication number
- EP0751842B1 EP0751842B1 EP95937017A EP95937017A EP0751842B1 EP 0751842 B1 EP0751842 B1 EP 0751842B1 EP 95937017 A EP95937017 A EP 95937017A EP 95937017 A EP95937017 A EP 95937017A EP 0751842 B1 EP0751842 B1 EP 0751842B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- double press
- forging
- piston
- press according
- stated
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- B21J9/06—Swaging presses; Upsetting presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/02—Special design or construction
- B21J7/14—Forging machines working with several hammers
-
- 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
- B21J9/10—Drives for forging presses
- B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B7/00—Presses characterised by a particular arrangement of the pressing members
- B30B7/04—Presses characterised by a particular arrangement of the pressing members wherein pressing is effected in different directions simultaneously or in turn
Definitions
- the invention relates to a double press for forging of round or angular rod-shaped workpieces with two pairs of hydraulically offset by 90 ° drivable by means of two pump units, counter-working forging tools (see e.g. JP-A-62 101301).
- each unit of a double press is from two cylinder-piston units working against each other, that deform the workpiece without it To shift the central axis, e.g. in the German Laid-open specification 2 221 341.
- Two of these Presses are offset by 90 ° in the longitudinal axis of the workpiece arranged one behind the other so that they are rod-shaped Workpieces across their longitudinal axis in two planes can deform.
- the simultaneous deformation of rod material in two Planes transverse to the longitudinal axis of the workpiece is basically at known as forging machines. With the exception of machine described in DE 38 00 220 C1, however, work all such machines with four tools in one Level. Due to their design, they are as wide as theirs Tools or limited in their stroke length and can therefore not with metallurgically favorable ones Deformation values work.
- a forging machine is known from DE 29 51 587, at the synchronization of two working against each other Cylinder-piston units of articulated levers which the forging tools have a perpendicular to the Working axis sliding in a guide connect with each other.
- the slider is made by one Reverse cylinder acted on the joint pieces causes the return of the forging tools.
- the function of resetting the forging tools can be from another pair of cylinder-piston units working against each other be taken over, perpendicular to that first pair is arranged in the same plane. To this The synchronized alternate drive is the way guaranteed two pairs of pistons.
- a crucial disadvantage of the above Forging machine is that the mechanical synchronization no variation in the stroke of the forging tools. It would be by adjusting the stroke to the decreasing material thickness, shorter piston operating times and thus faster forging and the saving of Energy desirable.
- the control also limits of the cylinder-piston units through valves in the Main lines the stroke frequency.
- the object of the present invention is a To provide double press, which the design-related disadvantages of DE 38 00 220 mentioned forging machine clears and their Realization is also cheaper. Furthermore it should be possible to have two pairs of each other working cylinder-piston units one Forging machine, especially the invention Double press, with individually adjustable stroke and high To operate stroke frequency. The performance of the operating pump units better used and the exact synchronization of the forging tools with simple means can be guaranteed.
- Double press according to claim 1 solved.
- the cylinder-piston units of the four forging tools of a double press be alternate driven, with each of the pump units at its respective pressure side with a cylinder-piston unit of a forging tool of one pair and on his Intake side with a cylinder-piston unit one Forging tool of the other pair is connected.
- Suction and discharge side change with the reversal of the Direction of conveyance.
- the main lines between the Pump units and the cylinder-piston units are free of valves and that the conveying direction of the Pump sets are reversible.
- a double press in the form of two in a row offset freeform presses is compared to the mentioned forging machines inexpensively.
- the forging machine according to the invention one can use conventional open die forging tools and thereby saving costs. Because of the construction avoided the eccentric forces that the machine strain.
- the control according to the invention offers an exact Synchronization of the movement of the forging tools a much higher wear resistance.
- Means An electronic control unit is the hub of both Pairs of forging tools in a simple way individually adjustable. By the individual Adjusting the stroke of the forging tools becomes unnecessary No idle stroke avoided and thus energy saved.
- the Pump capacity is reduced by 50%.
- the invention offers the possibility of Energy used for the compression of the pressure medium must be spent in usable mechanical energy to implement. To do this, use the pump shafts Flywheels that use the energy of the Intermediate pumps operating as hydraulic motors save and thus available for the pump drive put. This heats up through the conversion of energy Pressure barely on. The forging machine comes without additional cooling.
- the electronic control enables through the Switching off a pump set, one each A couple's forging tool on the forging to put on and fix while the other Tool pair operated by the other pump set can work faster forge sequence.
- the first pair I of forging tools A1 and A2 will operated by two cylinder-piston units 1 and 3.
- the pairs I and II of the forging tools lie around 90 ° offset in two levels. You machine the workpiece 35.
- the cylinder-piston units 1 and 2 are over the Main lines 21 and 22 from the pump unit 5 with Pressure medium supplied.
- One main line 21 is connected to the Pressure side of the pump 5, the other main line 22 to the Suction side of pump 5 connected. Suction and discharge side change with the reversal of the conveying direction.
- the cylinder-piston units 3 and 4 via the main lines 23 and 24 of the Pump unit 6 supplied with pressure medium.
- the Main lines 21, 22, 23 and 24 are between the pumps 5 and 6 and the connected cylinder-piston units 1, 2, 3 and 4 free of valves.
- the pump units 5 and 6 comprise at least one, in an advantageous embodiment several in parallel switched pumps, especially radial piston pumps, whose flow rate is infinitely variable, and their Direction of conveyance is reversible.
- radial piston pumps themselves through their fast positioning times and their good Controllability. Instead, axial piston or Swing disk pumps are used.
- the retreat areas of the cylinders of the pump units 1 and 2 are like those of the pump units 3 and 4 with the gas-pressurized liquid stores 7 or 8 connected which a constant pressure in the Retreat areas that maintain the return movement of the supports each piston.
- the pistons of cylinder-piston units 1 and 2 follow in their directions of movement and in the Operating speeds of the modulation of the Pump unit 5. Conveys the pump unit right, 1 pressure medium is sucked out of the cylinder, the piston moves in the direction of the arrow shown outwards, the piston of cylinder 2 in the direction of the arrow inside.
- the lifting movements can be known Way detected by measuring devices 31, 32, 33, 34 that are attached to the forging tools.
- the Signals from these measuring devices can also be used rhythmic reversal can be used.
- the piston surfaces of the cylinder pairs are normal the same size, so that the same in both directions Stroke lengths and stroke speeds arise. To anyway e.g. different when forging rectangular bars To be able to reach stroke end positions are on the Pressure lines 21, 22, 23 and 24 supply lines via the Three-way valves 14, 11, 12 and 13 provided it allow the fluid volume in the cylinders and thus changing the piston end positions.
- the three-way valves 11, 12, 13, and 14 to a circle with a Control line 30 connected by a pump 9 with a bias valve 10 is fed.
- the three-way valves are controlled by a forging program 14, 11, 12 or 13 when stationary or open pressure of the main lines, so that Pressure fluid can flow in or out.
- a forging program 14, 11, 12 or 13 when stationary or open pressure of the main lines, so that Pressure fluid can flow in or out.
- the opposite movement of the cylinder-piston units 1 and 2 can for example while the piston is Unit 1 moves the three-way valve back in the direction of the arrow 14 connected to the tank to the stroke of the Move the piston of unit 1 further outwards.
- the Pump 9 connected to shift the stroke inwards.
- the cylinder-piston units 2 and 4 become one Unit summarized by the Pump units 5 and 6 is supplied. This is how one comes about Double press with three cylinder-piston units with which advantageously slabs forged on an anvil can be. The one cylinder-piston unit presses double strength from above while the two Press other cylinder-piston units from the sides.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Press Drives And Press Lines (AREA)
- External Artificial Organs (AREA)
Description
- Fig 1.:
- Die Doppelpresse.
- Fig 2.:
- Der Antrieb der Doppelpresse.
Claims (12)
- Doppelpresse zum Schmieden von runden oder kantigen stangenförmigen Werkstücken mit zwei um 90° versetzt angeordneten Pressen, die jeweils ein Paar von hydraulisch mittels Pumpenaggregaten (5,6) antreibbaren, gegeneinander arbeitenden Schmiedewerkzeugen (A1,A2,B1,B2) aufweisen, insbesondere nach Anspruch 1,
dadurch gekennzeichnet,daß die Paare (I,II) der Schmiedewerkzeuge wechselweise angetrieben werden, wobei jedes der Pumpenaggregate (5,6) an seiner jeweiligen Druckseite mit jeweils einer Zylinder-Kolben-Einheit (1,3) eines Schmiedewerkzeuges (A1,A2) des einen Paares (I) und an seiner Saugseite mit jeweils einer Zylinder-Kolben-Einheit (2,4) eines Schmiedewerkzeuges (B1,B2) des anderen Paares (II) verbunden ist,daß die Hauptleitungen (21,22,23,24) zwischen den Pumpenaggregaten (5,6) und den Zylinder-Kolben-Einheiten (1,2,3,4) frei von Ventilen sind unddaß die Förderrichtung der Pumpenaggregate (5,6) umkehrbar ist. - Doppelpresse nach Anspruch 1
dadurch gekennzeichnet, daß die Fördermenge der Pumpenaggregate (5,6) einstellbar ist. - Doppelpresse nach den Ansprüchen 1 oder 2,
dadurch gekennzeichnet, daß die Pumpenaggregate (5,6) mehrere parallel geschaltete Pumpen, insbesondere Radialkolbenpumpen, umfassen. - Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Rückzugsräume der Zylinder der Pumpenaggregate (1,2,3,4) mit gasdruckbeaufschlagten Flüssigkeits-Speichern (7,8) verbunden sind.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß an den Schmiedewerkzeugen (A1,A2,B1,B2) Sensoren (31,32,33,34) angebracht sind, die den Hub der Kolben erfassen.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Hauptleitungen (21,22,23,24) mit Sicherheisventilen (25,26,27,28) verbunden sind.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Hauptleitungen (21,22,23,24) mit Rückschlagventilen (17,18,19,20) in Sperrichtung verbunden sind.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Rückschlagventile (17,18,19,20) über eine Fülleitung (29) mit einer durch das Vorspannventil (16) vorgespannten Pumpe (15) verbunden sind.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Hauptleitungen (21,22,23,24) mit steuerbaren Drei-Wege-Ventilen (14,11,12,13), insbesondere Servoventilen, verbunden sind.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Drei-Wege-Ventile (11,12,13,14) über eine Steuerleitung (30) mit einer durch das Vorspannventil (10) vorgespannten Pumpe (9) verbunden sind.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Pumpenaggregate (5,6) und die Drei-Wege-Ventile (11,12,13,14) elektronisch steuerbar sind.
- Doppelpresse nach einem der genannten Ansprüche, dadurch gekennzeichnet, daß die Zylinder-Kolben-Einheiten eines Paares von Schmiedewerkzeugen zu einer Zylinder-Kolbeneinheit zusammengefaßt werden, die mit ihrem Schmiedewerkzeug gegen einen Amboß arbeitet.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4446580A DE4446580A1 (de) | 1994-12-24 | 1994-12-24 | Doppelpresse |
DE4446580 | 1994-12-24 | ||
PCT/EP1995/004226 WO1996020053A1 (de) | 1994-12-24 | 1995-10-27 | Doppelpresse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0751842A1 EP0751842A1 (de) | 1997-01-08 |
EP0751842B1 true EP0751842B1 (de) | 1999-05-19 |
Family
ID=6537108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95937017A Expired - Lifetime EP0751842B1 (de) | 1994-12-24 | 1995-10-27 | Doppelpresse |
Country Status (6)
Country | Link |
---|---|
US (1) | US5732588A (de) |
EP (1) | EP0751842B1 (de) |
JP (1) | JPH09510145A (de) |
AT (1) | ATE180187T1 (de) |
DE (3) | DE4446580A1 (de) |
WO (1) | WO1996020053A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022206855A1 (de) | 2022-06-30 | 2024-01-04 | Sms Group Gmbh | Schmiedestrategie SMX |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100335195C (zh) * | 2005-10-13 | 2007-09-05 | 上海交通大学 | 悬梁式双压力机并联组合锻压机 |
CN100337769C (zh) * | 2005-10-13 | 2007-09-19 | 上海交通大学 | 滑块式双压力机并联组合锻压机 |
JP5240467B2 (ja) * | 2009-03-18 | 2013-07-17 | トヨタ自動車株式会社 | プレス成形方法 |
DE102011052733B4 (de) | 2011-08-16 | 2023-09-28 | Langenstein & Schemann Gmbh | Maschinenfundament, Verfahren zum Betrieb einer Umformmaschine und Umformanlage |
EP2946850A1 (de) * | 2014-05-23 | 2015-11-25 | SMS Meer GmbH | Verfahren zum Schmieden eines metallischen Werkstücks |
CN106623719B (zh) * | 2017-02-24 | 2019-04-26 | 王安基 | 锻造机构及锻机 |
CN107225691A (zh) * | 2017-06-01 | 2017-10-03 | 成都贝施美生物科技有限公司 | 一种生产长桥义齿用瓷块等径加压工艺 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE492281A (de) * | ||||
AT244716B (de) * | 1964-07-10 | 1966-01-25 | Gesellscharft Fuer Fertigungst | Gesenkschmiedemaschine |
AT264973B (de) * | 1966-05-23 | 1968-09-25 | Ges Fertigungstechnik & Maschb | Vorrichtung zum Streckschmieden strangförmigen Gutes |
AT289513B (de) * | 1969-06-27 | 1971-04-26 | Ges Fertigungstechnik & Maschb | Schmiedemaschine |
AT290255B (de) * | 1969-12-30 | 1971-05-25 | Ges Fertigungstechnik & Maschb | Schmiedemaschine |
DE2149577A1 (de) * | 1971-10-05 | 1973-04-12 | Erich Ribback | Maschine zur spanlosen formgebung von metallen |
DE2207717C3 (de) * | 1972-02-18 | 1975-10-16 | Maschinenfabrik Sack Gmbh, 4000 Duesseldorf | Steuereinrichtung mit hydraulischer Gleichlaufsteuerung für Schmiedemaschinen |
DE2221341A1 (de) * | 1972-05-02 | 1973-11-15 | Schloemann Ag | Hydraulische schmiedemaschine zum ausschmieden von knueppeln oder dergleichen |
SU479554A1 (ru) * | 1973-01-17 | 1975-08-05 | Рязанский Завод Тяжелого Кузнечнопрессового Оборудования | Радиально-ковочна машина |
DE2306566C2 (de) * | 1973-02-10 | 1983-11-17 | Pahnke Engineering GmbH & Co KG, 4000 Düsseldorf | Hydraulischer Antrieb für Schmiedemaschinen |
SU708589A1 (ru) * | 1976-06-17 | 1986-06-30 | Рязанский завод тяжелого кузнечно-прессового оборудования | Радиально-ковочна машина |
DE2951587A1 (de) * | 1979-12-21 | 1981-07-02 | Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen | Schmiedemaschine |
JPH0675721B2 (ja) * | 1985-10-28 | 1994-09-28 | 石川島播磨重工業株式会社 | スラブの成形装置 |
SU1323194A1 (ru) * | 1986-03-07 | 1987-07-15 | Рязанский завод тяжелого кузнечно-прессового оборудования | Устройство дл контрол работы радиально-ковочной машины |
DE3800220C1 (de) * | 1988-01-07 | 1989-02-02 | Pahnke Engineering Gmbh & Co Kg, 4000 Duesseldorf, De | |
DE3803632A1 (de) * | 1988-02-06 | 1989-08-17 | Eumuco Ag Fuer Maschinenbau | Mehr-stoessel-schmiedemaschine |
-
1994
- 1994-12-24 DE DE4446580A patent/DE4446580A1/de not_active Withdrawn
-
1995
- 1995-10-21 DE DE29516647U patent/DE29516647U1/de not_active Expired - Lifetime
- 1995-10-27 US US08/702,475 patent/US5732588A/en not_active Expired - Fee Related
- 1995-10-27 DE DE59505975T patent/DE59505975D1/de not_active Expired - Fee Related
- 1995-10-27 JP JP8520137A patent/JPH09510145A/ja active Pending
- 1995-10-27 AT AT95937017T patent/ATE180187T1/de active
- 1995-10-27 WO PCT/EP1995/004226 patent/WO1996020053A1/de active IP Right Grant
- 1995-10-27 EP EP95937017A patent/EP0751842B1/de not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022206855A1 (de) | 2022-06-30 | 2024-01-04 | Sms Group Gmbh | Schmiedestrategie SMX |
Also Published As
Publication number | Publication date |
---|---|
JPH09510145A (ja) | 1997-10-14 |
ATE180187T1 (de) | 1999-06-15 |
US5732588A (en) | 1998-03-31 |
DE59505975D1 (de) | 1999-06-24 |
DE29516647U1 (de) | 1995-12-21 |
DE4446580A1 (de) | 1996-07-04 |
WO1996020053A1 (de) | 1996-07-04 |
EP0751842A1 (de) | 1997-01-08 |
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