EP0653257B1 - Machine à forger - Google Patents

Machine à forger Download PDF

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Publication number
EP0653257B1
EP0653257B1 EP93120367A EP93120367A EP0653257B1 EP 0653257 B1 EP0653257 B1 EP 0653257B1 EP 93120367 A EP93120367 A EP 93120367A EP 93120367 A EP93120367 A EP 93120367A EP 0653257 B1 EP0653257 B1 EP 0653257B1
Authority
EP
European Patent Office
Prior art keywords
stroke
tools
ram
rams
cylinder
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
Application number
EP93120367A
Other languages
German (de)
English (en)
Other versions
EP0653257A1 (fr
Inventor
Peter Schubert
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
SMS Hasenclever Maschinenfabrik 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 AT93120367T priority Critical patent/ATE122941T1/de
Priority to EP93120367A priority patent/EP0653257B1/fr
Priority to DE59300222T priority patent/DE59300222D1/de
Publication of EP0653257A1 publication Critical patent/EP0653257A1/fr
Application granted granted Critical
Publication of EP0653257B1 publication Critical patent/EP0653257B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • Forging workpieces emphasized along the longitudinal axis forging machines are used which are distributed with three or more in one plane, in particular with four x-shaped staggered by 90 ° to each other, which act radially on the workpiece, which is guided longitudinally in the system axis, and are equipped with tools It is structurally advantageous if the plungers guided in the machine frame are designed at their ends facing away from the tools as cylinders of piston-cylinder units which are open to the outside or are connected to them.
  • the tools should form a closed caliber in adjustable stroke end positions, which can be achieved in that either those tools which are transversely adjustable in their common plane by means of tool supports on the butts, and with their part of their working surface exceeding the caliber dimension, are covered by a side surface of an adjacent tool adjusting devices acting on the supports can be adjusted accordingly (EP 0 228 030 B1), or the use of interchangeable tools of appropriate width takes place (Peter Metzger, "The numerically controlled radial forming machine and its use in the context of flexible production" Volume 55 of the reports from the Institute of Metal Forming Technology at the University of Stuttgart, publisher: Springer-Verlag, Berlin - Heidelberg - New York, 1980, pages 36-39, 67-69, 112, 113, 129).
  • the stroke position by which the caliber defined by the tools is determined, can be adjusted by means of cross-beams that are adjustable on the machine frame and support the pistons of the piston-cylinder units.
  • the invention relates to a forging machine which is to be used primarily for free-form stretch forging, that is to say is operated with a lower number of strokes but with a high penetration depth.
  • the piston-cylinder units can be dimensioned for the entire ram stroke, so that fixed cross members can be provided to support the pistons.
  • the aim of the invention is a simple, secure fixation of the stroke end position corresponding to the respective tool setting or tool width.
  • the plungers of which are guided in the machine frame at their ends facing away from the tools are designed as cylinders of piston-cylinder units which are open to the outside or are connected to them, according to the invention the stroke of each plunger or of the cylinder connected to it can be limited in the stroke end position by adjustable stops arranged between the machine frame and a projection on the tappet or cylinder.
  • threaded spindles protruding from the machine frame are used, which are supported by threaded nuts in the frame and are provided with drives for the relative rotation of threaded spindles and threaded nuts, which allows a continuous adjustment of the stroke end position.
  • spacers are provided which can be inserted into and removed from the projection areas of the tappets and which determine the stop position of the tappets relative to the machine frame.
  • the spacers are designed as plates which can be pivoted about an axis parallel to the tappet axis and with eccentric projections which pivot in and out of the projection area. It is particularly advantageous to alternately arrange the spacers forming a stop so as to be pivotable about two axes and to dimension their eccentric projections in such a way that they also overlap each other outside the projection area.
  • the forging machine consists of a frame 1 which leads in a plane perpendicular to the system axis S four rams 2 which are arranged in an x-shape at 90 ° to each other in the plane and can be moved radially to the system axis S.
  • the plungers 2 are equipped with tools 3 at their ends facing the system axis S.
  • the plungers 2 are designed as cylinders 4 which are open to the outside, ie are provided with a cylinder bore 4b, the parts of the plungers 2 forming the cylinders 4 being able to form separate parts which are detachably connected to the plungers 2.
  • Plungers 5 with stuffing boxes 6 and seals 7 are inserted into the cylinders 4.
  • the pistons 5 are supported on crossbeams 8, which are connected by tension rods 9 to the frame 1 with the interposition of support blocks 11 and pressure columns 10 under prestress. Pressure medium can be supplied or removed via the holes 12 in the crossbeams 8 and the holes 13 in the piston 5.
  • the cylinders 4 are provided with flanges 14, which are each provided with two projections 14a. Piston-cylinder units, the cylinders 15 of which are supported on the frame 1, effect the retraction of the tappets 2 with the tools 3 with their pistons 16, which act on the projections 14a and thus on the cylinders 4 and tappets 2.
  • the tools 3 of radial forming forging machines move in one plane at the same time, which is why care must be taken to ensure that tool collisions are excluded.
  • the plunger strokes must be limited so that the tools 3 form a practically closed caliber in their stroke end positions without themselves to touch.
  • This stroke limitation can be carried out by application control. According to the invention it is provided that the stroke limitation - additionally or alone - be provided by adjustable stops. In the exemplary embodiment according to FIGS.
  • stop blocks 17 are fastened on both sides of each tappet 2 on the frame, which in the stroke from projections 14b to the flanges 14 of the cylinders 4 connected to the tappets 2.
  • the associated stop blocks 17 determine the stroke end position in which the tappet 2 with tool 3 approaches the system axis S as far as possible by the projections 14b of the cylinder 4 connected to this tappet 2 being placed on the stop blocks 17 .
  • Other stroke end positions of the plunger 2 with tool 3, which are further away from the system axis S, are determined by spacer plates 18 and 19, which can be pivoted into the stroke of the projections 14b.
  • the spacer plates 18 and 19 are provided with bores 20, placed on the round columns 10 and pivotally held by adjusting rings 21 on the columns 10.
  • the spacer plates 18 and 19 are pivoted by piston-cylinder units 22, which are supported by brackets 23 fastened to the frame 1 and connected to the spacer plates 18, 19.
  • the parts 24 and 25 of the spacer plates 18 and 19 lying eccentrically to the pivot axis given by the center of the bore 20 have such a shape and dimensioning that they come to lie pivoted outside the stroke of the projections 14b, but their mutual overlap and the Do not lose overlap with the stop blocks 17, so that their pivotability is always guaranteed.
  • two spacer plates 18 and 19 are provided in cooperation with a stop block 17 on both sides of each tappet 2, which results in three defined stroke end positions for the tappet 2.
  • more than two spacer plates can be provided, it being possible to define a further stroke end position with each further spacer plate, and a finer gradation between the stroke end positions can be provided.
  • the tools 3 can be moved transversely in three positions in the working plane.
  • FIG. 2 shows a first position of the tool 3 and the two further positions are shown in dashed lines.
  • the tool 3 is attached to a support 26.
  • the support 26 is releasably connected to the end plate 27 in a known manner by clamping elements, not shown. After the clamping connection has been released, the support 26 can be adjusted along the end plate 27 by means of the linkage 31 via a bracket 28 and an angle lever 29 mounted in the end plate 27 by a piston-cylinder unit 30 which can be operated in two stroke stages.
  • the piston-cylinder unit 30 is supported on the flange 14 of the cylinder 4 forming part of the tappet 2.
  • FIG. 5 corresponds to the embodiment shown in Figures 1 to 4 except for the design of the stops for the stroke limitation and the design of the actuator for the transverse tool adjustment.
  • a threaded spindle 32 is provided as a stop for the stroke limitation and its threaded shaft can be rotated in a nut piece 33 fastened to the frame 1.
  • the spindle is rotated by a worm wheel 34 with a worm 35 and a motor (not shown).
  • the worm wheel 34 with its worm 35 is mounted in the frame 1.
  • the threaded spindle 32 engages with a square shaft 36 in a corresponding bore in the worm wheel 34.
  • the transverse tool adjustment in the exemplary embodiment according to FIG. 5 is also provided with a steplessly acting actuator.
  • the linkage 37 is provided with a threaded shaft 38 which engages in a threaded sleeve 39.
  • the threaded sleeve 38 is provided with a worm gear ring 40 and is mounted with the associated worm 41 and a drive motor (not shown) in a housing 42, the housing 42 being supported on the flange 14 of the cylinder 4 forming part of the tappet 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Disintegrating Or Milling (AREA)

Claims (5)

  1. Machine à forger, comprenant quatre poinçons (2) équipés d'outils (3), disposés en forme de x dans un plan, lesdits poinçons étant décalés de 90° les uns par rapport aux autres et agissant radialement sur la pièce à oeuvrer guidée longitudinalement dans l'axe (S) du système, les poinçons (2) guidés dans le cadre (1) de la machine formant des cylindres (4) ouverts vers l'extérieur de l'axe (S) du système, ou étant reliés à de tels cylindres, et pouvant être réglés dans leurs positions de fin de course respectives au moyen d'organes de positionnement (17, 18, 19 ; 32), et en fonction du réglage des positions de fin de course des poinçons (2) soit on prévoit de pouvoir régler les outils (3), susceptibles d'être déplacés transversalement sur les poinçons (2) dans leur plan commun et au moyen de porte-outils (26), lesdits outils étant recouverts sur la partie de leur surface de travail qui dépasse la taille du calibre par une surface latérale d'un outil voisin, et le réglage étant assuré au moyen de dispositifs de positionnement (28, 29) qui agissent sur les supports (26), soit on emploie des outils interchangeables (3) d'une largeur telle que les outils (3) forment dans leurs positions de fin de course respectives un calibre fermé,
    caractérisée en ce que la course de chaque poinçon (2), ou du cylindre (4) qui lui est relié, est susceptible d'être limitée dans la position de fin de course au moyen de butées (17, 18, 19 ; 32) réglables agencées entre le cadre de machine (1) et un élément en porte-à-faux (14b) sur le poinçon (2) ou sur le cylindre (4).
  2. Machine à forger selon la revendication 1, caractérisée en ce que pour les butées on se sert de tiges filetées (32) qui dépassent hors du cadre de la machine, qui sont supportées dans le cadre de machine (1) par des écrous taraudés (32), et qui sont dotées d'entraînements (34, 35) pour la rotation relative des tiges filetées et des écrous taraudés (33).
  3. Machine à forger selon la revendication 1, caractérisée en ce qu'il est prévu dans la région en porte-à-faux (14b) des pièces d'écartement (18, 19) susceptibles d'y être amenées et d'en être extraites, qui déterminent la position de butée.
  4. Machine à forger selon la revendication 3, caractérisée en ce que les pièces d'écartement (18, 19) sont réalisées sous la forme de plaques capables de basculer autour d'un axe parallèle à l'axe des poinçons, comportant des saillies (24, 25) excentriques capables de basculer vers l'intérieur de la région en porte-à-faux (14b), ou hors de celle-ci.
  5. Machine à forger selon la revendication 4, caractérisée en ce que les pièces d'écartement (18, 19), qui forment une butée, sont agencées de manière à pouvoir basculer alternativement autour de deux axes, et en ce que leurs saillies excentriques (24, 25) ont des dimensions qui maintiennent le chevauchement mutuel vers l'extérieur de la région en porte-à-faux (14b).
EP93120367A 1993-12-16 1993-12-16 Machine à forger Expired - Lifetime EP0653257B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT93120367T ATE122941T1 (de) 1993-12-16 1993-12-16 Schmiedemaschine.
EP93120367A EP0653257B1 (fr) 1993-12-16 1993-12-16 Machine à forger
DE59300222T DE59300222D1 (de) 1993-12-16 1993-12-16 Schmiedemaschine.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93120367A EP0653257B1 (fr) 1993-12-16 1993-12-16 Machine à forger

Publications (2)

Publication Number Publication Date
EP0653257A1 EP0653257A1 (fr) 1995-05-17
EP0653257B1 true EP0653257B1 (fr) 1995-05-24

Family

ID=8213500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93120367A Expired - Lifetime EP0653257B1 (fr) 1993-12-16 1993-12-16 Machine à forger

Country Status (3)

Country Link
EP (1) EP0653257B1 (fr)
AT (1) ATE122941T1 (fr)
DE (1) DE59300222D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005012297B4 (de) * 2005-03-17 2007-06-14 Sms Meer Gmbh Schmiedemaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8528333U1 (de) * 1985-10-04 1987-03-19 Hoesch Maschinenfabrik Deutschland Ag, 4600 Dortmund Hydraulische Presse
DE3678918D1 (de) * 1986-01-02 1991-05-29 Hasenclever Maschf Sms Schmiedemaschine.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005012297B4 (de) * 2005-03-17 2007-06-14 Sms Meer Gmbh Schmiedemaschine

Also Published As

Publication number Publication date
DE59300222D1 (de) 1995-07-27
EP0653257A1 (fr) 1995-05-17
ATE122941T1 (de) 1995-06-15

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