EP0228658A2 - Machine de forgeage - Google Patents

Machine de forgeage Download PDF

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Publication number
EP0228658A2
EP0228658A2 EP86117596A EP86117596A EP0228658A2 EP 0228658 A2 EP0228658 A2 EP 0228658A2 EP 86117596 A EP86117596 A EP 86117596A EP 86117596 A EP86117596 A EP 86117596A EP 0228658 A2 EP0228658 A2 EP 0228658A2
Authority
EP
European Patent Office
Prior art keywords
pistons
cylinders
machine according
piston
forging machine
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
EP86117596A
Other languages
German (de)
English (en)
Other versions
EP0228658A3 (en
EP0228658B1 (fr
Inventor
Heinz Schmoll
Hans Albert Schubert
Klaus Schulze
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.)
SMS Hasenclever GmbH
Original Assignee
SMS Hasenclever GmbH
SMS Hasenclever Maschinenfabrik GmbH
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 SMS Hasenclever GmbH, SMS Hasenclever Maschinenfabrik GmbH filed Critical SMS Hasenclever GmbH
Priority to AT86117596T priority Critical patent/ATE61951T1/de
Publication of EP0228658A2 publication Critical patent/EP0228658A2/fr
Publication of EP0228658A3 publication Critical patent/EP0228658A3/de
Application granted granted Critical
Publication of EP0228658B1 publication Critical patent/EP0228658B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • 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

Definitions

  • the mechanical ram drives allow very high working speeds and stroke rates of the rams, but the depth of penetration is small. If greater penetration depths are required, the hydraulic ram drive is advantageous.
  • a distinction must be made between the actual working stroke and the proportion of the stroke with which the degree of approximation of the ram, ie the workpiece dimension, is specified.
  • This dimension or the position in which the working stroke takes place is referred to as the stroke position, which is set by adjusting the stroke position.
  • a stroke position adjustment by changing the liquid column in the cylinders designed for the entire stroke range is forbidden in high-speed forging presses because of the high proportion of suspension work as a result of the unnecessarily large volume of hydraulic fluid in most stroke positions. For a long time, therefore, the hydraulic drive for the working stroke has been separated from the drive for the stroke position adjustment.
  • the pistons moving the rams are in short-stroke cylinders of the small volume given by the piston stroke and piston area and the piston stroke is mechanically limited by stops, while the stroke position is adjusted mechanically usually by means of spindles.
  • the aim of the invention is to improve such forging machines provided with a hydraulic drive for the working stroke and a separate mechanical drive for adjusting the stroke position.
  • a solid, low-play ram guidance can be achieved with simple mechanical stroke position adjustment.
  • the tappets which are equipped with tools and carry out the working stroke, are each designed as a part (lifting part) of piston-cylinder units
  • the second parts of the piston (cylinder parts) limiting the displacement in the reaction pressure direction axially from the total stroke by subtracting the working stroke remaining travel paths (stroke position adjustments) are adjustable relative to the machine frame
  • the invention further provides for the cylinders to be firmly inserted into the machine frame, the pistons to be guided in the cylinders and the cylinders with plugs forming their bottoms and adjustable in them as actuating means .
  • the invention further provides for the pistons to be axially adjustable relative to the machine frame by means of actuating means.
  • the cylinders are firmly inserted into the machine frame and are designed with adjustable plugs as cylinder bottoms, it is particularly advantageous, according to a further feature of the invention, for the plugs with a central bore and the pistons with shafts penetrating the hollow plugs to be provided so that the shafts can be provided with the stroke limits and / or retractions of the pistons.
  • the pistons are connected to protective jackets that cover the cylinders with little play, into which compressed air is pressed, which acts as a dirt barrier to the gaps happens between the cylinders and the protective sleeves.
  • the jacketing of the cylinders must have a maximum length of slightly more than the total stroke dimension and the remaining length of the cylinders is available in connection with the machine frame.
  • the tappets are designed as cylinders and the pistons as actuating parts
  • double-acting pistons connected to actuating means via their piston rods can be provided, wherein the pistons can also be designed for stroke limitation in addition to retraction.
  • the pistons can also be designed as ring pistons, so that the cylinders acting as tappets penetrate the ring pistons as ring cylinders with an inner shaft and can be designed with the means for limiting the stroke and / or retracting the cylinders.
  • pistons are provided with the plugs or the cylinders with shafts penetrating the pistons, these can be provided with collars, traverses or the like, which serve as support stops and / or retraction pistons as supports.
  • the shafts can themselves be drilled through and accommodate the means for fastening and / or adjusting the tools connected to the tappets, otherwise these means must be guided past the piston-cylinder units.
  • the shafts can be guided in the bores receiving them and thus the pistons or cylinders secured against rotation with respect to the plugs or pistons, for which purpose square sections can be provided on the shafts and in the bores, otherwise those designed as pistons or cylinders Tappets in at least a section of their guides in the machine frame are to be provided with non-circular, in particular planar, guide means which exclude the rotation of the pistons or cylinders in the machine frame.
  • the adjusting parts that is the plugs or pistons, are connected to yoke plates on which the adjusting means act.
  • threaded nuts are mounted in the yoke plates, with which the yoke plates can be adjusted along two or more threaded spindles connected to the machine frame. It is advantageous to provide the threaded nuts with external toothing and to connect them in a geared manner by means of a ring gear in order to be able to rotate or lock them together.
  • the workpiece 1 can be seen in its cross section, which traverses the length of the forging machine and is thereby stretched by the tools 2.
  • the Tools 2 are cross-lock-like, that is to say offset according to the cross-section to be forged, and an adjacent tool 2 is arranged to overlap around the workpiece 1 with its working surface.
  • the respective center offset of the tools 2 determines the possible approximation of the tools 2 and thus the smallest cross section to be forged with a specific tool position, which in turn determines the inner reversal point of the stroke position.
  • the tools 2 are carried by plungers 3, which are designed as pistons and are movably guided in cylinders 4.
  • plungers 3 which are designed as pistons and are movably guided in cylinders 4.
  • four cylinders 4 are arranged in a machine frame 5.
  • the machine frame 5 is anchored to the foundation 7 with foot pieces 6.
  • FIGS. 2 to 4 The details of the units formed from the tappets or pistons 3 and the cylinders 4 are shown in FIGS. 2 to 4.
  • the cylinders 4 are provided with flanges 8 and the machine frames 5 per cylinder 4 are provided with four eyes.
  • the tie rods 10 are also extended to spindles 13 with a threaded shaft 14.
  • Each cylinder 4 has a through bore which is closed on one side by a plug 15, which includes a seal 16.
  • the plug 15 is firmly connected to a yoke plate 17 which is provided with four bores 18 for the passage of the spindles 13 to the tie rods 10.
  • the bores 18 are expanded to bearing bores in which nuts 20 provided with teeth 19 on the outside and internally threaded nuts are rotatably mounted and held by a split bearing plate 21.
  • the four nuts 20 of a yoke plate 17 are rotated together by a ring gear 22 which can be rotated with balls 23 on a bearing ring 24 centered and fastened on the yoke plate 17.
  • Drive pinions 25, which are in engagement with the ring gear 22, can be rotated or locked either via a gear 26. With the rotation of the pinion 25, the nuts 20 provided with the toothing 19 are rotated via the ring gear 22 and move along the threaded shafts 14 on the spindles 13 and thus axially adjust the stopper 15 in the bore of the
  • a plunger 3 which is at the same time designed as a plunger, which carries the tool (not shown in FIGS. 2 to 4), is guided in an axially movable manner.
  • the piston 3 is provided with a round shaft 27 and at the transition from the piston 3 to the shaft 27 with a square section 28. Furthermore, the shaft 27 is provided with a collar 29 at its end.
  • the stopper 15 is provided with a corresponding round and square bore in the area of the section 28, the square section 28 corresponding to the piston 3 leads square hole of the plug 15 secured against rotation.
  • the pressure medium space in the cylinder 4 between the piston 3 and the plug 15 is closed by the seals 30 and 31.
  • the axial movement of the piston 3 is limited, on the one hand, by its stop on the plug 15 and, on the other hand, by the collar 29 on the piston shaft 27, by the collar 29 striking the rear face 32 of the plug 15.
  • the collar 29 on the piston shaft 27 can be axially adjustable, whereby the stroke of the piston 3 limited by the stops is also adjustable.
  • the stroke position of the piston 3, however, is adjustable by the previously described adjustment of the yoke plate 17 by turning the nuts 20 on the threaded shafts 14 of the spindles 13.
  • the plug 15 is drilled out from the rear end face to a cylinder space 33.
  • An annular piston 34 inserted into this cylinder space 33, which rests on the shaft 27 of the piston 3 and is supported on the collar 29, closes an annular space 37 with the seals 35 and 36, the action of which causes the piston 3 to retract.
  • Piston-cylinder units 38 are arranged between the flange 8 of the cylinder 4 and the yoke plate 17, by means of which the constant contact of the threaded nuts 20 on the threaded shaft 14 is maintained in the direction of the working pressure in order to ensure that the stopper 15 is supported without play.
  • a protective jacket 39 is placed on the piston 3, which surrounds the outside of the cylinder 4 with little play. Compressed air is blown into the protective jacket 39, which emerges at the annular gap 40 between the protective jacket 39 and the cylinder 4 and thus prevents the ingress of dirt into the space 41 covered by the protective jacket 39.
  • the plungers are designed as cylinders 42, one of which is shown in FIG. 5.
  • the cylinders 42 are guided in the machine frame 43 in guide bushes 44 on the outside of round cylinders 42, with guide plates of corresponding shape taking the place of the guide bushes 44 on the outside of cylinders which are flattened out of round.
  • Each cylinder 42 forms a unit with a piston 45, the piston 45 being supported on a yoke plate 46.
  • the adjustment of the yoke plate 46 relative to the machine frame 43 is the same as that of the yoke plate 17 relative to the machine frame 5, the corresponding parts being identified identically, so that reference is made to their description in the context of the first exemplary embodiment.
  • the piston 45 is designed as an annular piston and the cylinder 42 is accordingly provided with a shaft 47 which passes through the annular piston 45. At its end, the shaft 47 is provided with a cross member 48. A plate 49, which is provided with cylinder bores 50, is placed on the yoke plate 46 with the piston 45. Pistons 51 in the cylinder bores 50 can be acted upon to retract the cylinder 42 and the working stroke of the cylinder 42 is on the one hand by the annular piston 45 and on the other hand by the pistons 51 limited.
  • bushes 52a, b and c are provided between the annular piston 45 and the cylinder 42 with shaft 47, and sealing rings 52d and e are provided for sealing.
  • the design of the piston 45 as an annular piston and the shaft 47 offer the possibility of tool adjustment through a bore 53 in the shaft 47.
  • a shaft 54 is provided which can be rotated and locked via a worm drive 55.
  • a pinion 55 connected to the shaft 54 is in engagement with a toothed rack 56 in the tool 57.
  • a support 59 carrying the tool 57 is fastened to a head piece 60 by means of clamping devices 59, the head piece 60 being connected to the cylinder 42.
  • clamping devices 58 When the clamping devices 58 are released, the tool 57 with its support 59 on the head piece 60 can be adjusted transversely to the ram axis in the working plane.
  • a tool can be adjusted if the piston shaft 27 is axially pierced.
  • the plungers are designed as cylinders 61, as shown in FIGS. 6 and 7.
  • Each cylinder 61 is guided in the machine frame 62.
  • double-acting pistons 63 are provided which are connected to the yoke plates 65 via piston rods 64.
  • each cylinder 61 is closed off by a cover 66 towards the piston rod 64, the cover 66 simultaneously limiting the stroke of the cylinder 61 to the working stroke.
  • the stroke position is adjusted via the yoke plate 65 in the same way as in the first and second exemplary embodiments.
  • the corresponding parts are provided with the same reference numerals and it is referred to Description of the other embodiments.
  • a tool adjustment by means of a centrally arranged shaft as in the second embodiment would also be possible - for this purpose the piston 63 would have to be extended with a pin into a bore penetrating the bottom of the cylinder 61 and the cylinder 61 for 7, the tool adjustment is provided by two external shafts 67 which are mounted in bearings 68 fastened to the yoke plate 65 and follow the movement of the yoke plate 65.
  • a gear transmission 69 is placed on the yoke plate 65 and connects the shafts 67 driven by motors 72 via two intermediate gears 70 and gears 71.
  • the shafts 67 are furthermore mounted in a head piece 73 to the cylinder 61 in bushes 74 and connected with pinions 75.
  • a support 77 carrying the tool 76 which is guided in the head piece 73 and is detachably connected to the head piece 73 by a clamping device 78, is provided on both longitudinal sides with a toothing 79 in which the pinions 75 engage.
  • the clamping device 78 is released, the tool 76 with its support 77 on the head piece 73 can be adjusted transversely to the ram axis in the working plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
EP86117596A 1986-01-02 1986-12-17 Machine de forgeage Expired - Lifetime EP0228658B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86117596T ATE61951T1 (de) 1986-01-02 1986-12-17 Schmiedemaschine.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3600018 1986-01-02
DE3600018 1986-01-02
DE3630172 1986-09-04
DE3630172 1986-09-04

Publications (3)

Publication Number Publication Date
EP0228658A2 true EP0228658A2 (fr) 1987-07-15
EP0228658A3 EP0228658A3 (en) 1988-08-31
EP0228658B1 EP0228658B1 (fr) 1991-03-27

Family

ID=25839902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117596A Expired - Lifetime EP0228658B1 (fr) 1986-01-02 1986-12-17 Machine de forgeage

Country Status (4)

Country Link
US (1) US4831864A (fr)
EP (1) EP0228658B1 (fr)
JP (1) JPH0761520B2 (fr)
DE (1) DE3678411D1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800220C1 (fr) * 1988-01-07 1989-02-02 Pahnke Engineering Gmbh & Co Kg, 4000 Duesseldorf, De
US5056351A (en) * 1988-01-29 1991-10-15 Dayco Products, Inc. Crimping device and adjusting ring
ATE91443T1 (de) * 1991-12-30 1993-07-15 Hasenclever Maschf Sms Schmiedemaschine.
DE4143175A1 (de) * 1991-12-30 1993-07-01 Hasenclever Maschf Sms Schmiedemaschine
DE4143176A1 (de) * 1991-12-30 1993-07-01 Hasenclever Maschf Sms Schmiedemaschine
DE4444493A1 (de) * 1993-12-16 1995-06-22 Hasenclever Maschf Sms Schmiedemaschine
DE4444497A1 (de) * 1993-12-16 1995-06-22 Hasenclever Maschf Sms Schmiedemaschine
DE4342974C1 (de) * 1993-12-16 1995-04-20 Hasenclever Maschf Sms Antriebs- und Führungseinheit für Stößel von Schmiedemaschinen oder Schmiedepressen
DE4444498A1 (de) * 1993-12-16 1995-06-22 Hasenclever Maschf Sms Schmiedemaschine
US9365008B1 (en) * 2012-09-28 2016-06-14 Michael Kenneth Walker Actuating device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB517015A (en) * 1939-02-22 1940-01-18 John Peace And Sons Ltd Improvements in apparatus for forging, hammering and the like
GB1186379A (en) * 1966-07-21 1970-04-02 Btr Industries Ltd Improvements in or relating to Swaging Machines
DE2030471A1 (de) * 1969-06-27 1971-01-07 Gesellschaft fur Fertigungstechnik u Maschinenbau GmbH Steyr (Osterreich) Schmiedemaschine
DE1963979A1 (de) * 1969-12-20 1971-06-24 Demag Hydraulik Gmbh Hydraulische Schmiedemaschine fuer das Warmschmieden stab- und stangenfoermiger Werkstuecke
DE2055592A1 (de) * 1969-12-30 1971-07-15 GFM Gesellschaft fur Fertigungstech mk und Maschinenbau AG, Steyr (Oster reich) Schmiedemaschine
GB1302095A (fr) * 1969-04-05 1973-01-04

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DE449558C (de) * 1926-05-07 1927-09-15 Johannes Ingrisch Dipl Ing Presse zur Verdichtung oder Querschnittsaenderung von Koerpern aus Metall oder anderen Stoffen
BE555710A (fr) * 1956-03-19
US3348406A (en) * 1963-11-12 1967-10-24 Youngstown Sheet And Tube Co Motorized press ram adjusting means
US3373596A (en) * 1965-06-18 1968-03-19 Gerd M. Moeller Hydraulic press
DE1812169A1 (de) * 1968-12-02 1970-06-18 Sack Gmbh Maschf Schmiedemaschine
DE1908362A1 (de) * 1969-02-20 1970-09-10 Sack Gmbh Maschf Schmiedemaschine mit verstellbaren Schmiedesaetteln
DE1908361A1 (de) * 1969-02-20 1970-09-10 Sack Gmbh Maschf Schmiedemaschine
US3626746A (en) * 1969-02-25 1971-12-14 Fives Lille Cail Work reducing and shaping apparatus
US3822456A (en) * 1970-03-30 1974-07-09 Anaconda Co Strand connecting method
DE2207717C3 (de) * 1972-02-18 1975-10-16 Maschinenfabrik Sack Gmbh, 4000 Duesseldorf Steuereinrichtung mit hydraulischer Gleichlaufsteuerung für Schmiedemaschinen
NL155685B (nl) * 1972-07-21 1978-01-16 Philips Nv Gasontladingslaser en werkwijze voor het vervaardigen daarvan.
JPS5417196B2 (fr) * 1972-08-31 1979-06-28
DE2306566C2 (de) * 1973-02-10 1983-11-17 Pahnke Engineering GmbH & Co KG, 4000 Düsseldorf Hydraulischer Antrieb für Schmiedemaschinen
US3919877A (en) * 1973-11-06 1975-11-18 Thomas & Betts Corp Tool
AT329349B (de) * 1973-11-15 1976-05-10 Gfm Fertigungstechnik Schnellaufende kurzhub-schmiedepresse
SU565445A1 (ru) * 1974-01-03 1979-05-30 Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения Радиально-ковочна машина
SU612744A1 (ru) * 1976-11-22 1978-06-30 Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения Радиально-ковочна машина
EP0112516B1 (fr) * 1982-12-01 1988-05-11 Hitachi, Ltd. Dispositif pour réduire la largeur de brame
JPS62229946A (ja) * 1986-03-31 1987-10-08 Toshiba Corp ドライエツチング装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB517015A (en) * 1939-02-22 1940-01-18 John Peace And Sons Ltd Improvements in apparatus for forging, hammering and the like
GB1186379A (en) * 1966-07-21 1970-04-02 Btr Industries Ltd Improvements in or relating to Swaging Machines
GB1302095A (fr) * 1969-04-05 1973-01-04
DE2030471A1 (de) * 1969-06-27 1971-01-07 Gesellschaft fur Fertigungstechnik u Maschinenbau GmbH Steyr (Osterreich) Schmiedemaschine
DE1963979A1 (de) * 1969-12-20 1971-06-24 Demag Hydraulik Gmbh Hydraulische Schmiedemaschine fuer das Warmschmieden stab- und stangenfoermiger Werkstuecke
DE2055592A1 (de) * 1969-12-30 1971-07-15 GFM Gesellschaft fur Fertigungstech mk und Maschinenbau AG, Steyr (Oster reich) Schmiedemaschine

Also Published As

Publication number Publication date
JPS62158543A (ja) 1987-07-14
US4831864A (en) 1989-05-23
EP0228658A3 (en) 1988-08-31
JPH0761520B2 (ja) 1995-07-05
DE3678411D1 (de) 1991-05-02
EP0228658B1 (fr) 1991-03-27

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