EP0611612B1 - Machine à repousser - Google Patents

Machine à repousser Download PDF

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Publication number
EP0611612B1
EP0611612B1 EP94100538A EP94100538A EP0611612B1 EP 0611612 B1 EP0611612 B1 EP 0611612B1 EP 94100538 A EP94100538 A EP 94100538A EP 94100538 A EP94100538 A EP 94100538A EP 0611612 B1 EP0611612 B1 EP 0611612B1
Authority
EP
European Patent Office
Prior art keywords
spindle
spinning
workpiece
tool
work
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
EP94100538A
Other languages
German (de)
English (en)
Other versions
EP0611612A1 (fr
Inventor
Helmut Wenzel
Karl-Heinz Köstermeier
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.)
Leifeld GmbH and Co
Original Assignee
Leifeld GmbH and Co
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 Leifeld GmbH and Co filed Critical Leifeld GmbH and Co
Publication of EP0611612A1 publication Critical patent/EP0611612A1/fr
Application granted granted Critical
Publication of EP0611612B1 publication Critical patent/EP0611612B1/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
    • 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
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers

Definitions

  • the invention relates to a press-rolling machine with a machine frame, with a spindle, with a pressing tool attached to an end face of the spindle, with an axially movable counter-holder aligned with the spindle for a workpiece placed on the pressing tool and with at least two rotatable pressing rollers which are guided in the machine frame are adjustable in the radial direction of the spindle, whereby the spindle can be moved together with the counterholder in the axial direction of the spindle relative to the machine frame and to the pressure rollers in order to carry out a pressure rolling process, whereby a workpiece scraper is provided, which can be freely guided on the machine frame parallel to the spindle by means of the latter is, and wherein the displacement path of the workpiece scraper in the return direction of the spindle is limited so that the displacement path of the workpiece scraper is less than the displacement path of the spindle.
  • a pressure rolling machine of the type mentioned is known from DD-A-121 281.
  • a fold holder is provided which lies on the free end of the finished workpiece and can also function as a workpiece scraper at the end of the press-rolling process.
  • the spindle is positioned in a rotationally fixed manner and that the spinning rollers rotate around the spindle in order to carry out a spinning-rolling process. This makes the mechanical outlay relatively high required for the holder, the drive and the position adjustment of the spinning rollers.
  • the main spindle is moved in the axial direction of the spindle while rotating about its longitudinal axis together with the pressing tool and workpiece blank and with its rotary drive and the counterholder until the forming process has taken place, i.e. until the workpiece blank is formed into the workpiece.
  • the spinning rollers do not have to perform any movement in the axial direction of the spindle or any movement in the circumferential direction of the spindle and are only moved outward again in the radial direction of the spindle at the end of the pressure rolling process.
  • the articulated and / or elastic mounting of the scraper fingers of the workpiece scraper ensures that, even with asymmetries and the resulting wave or tip formation at the free end of the workpiece, the scraper fingers in the contact area with the workpiece always attack the workpiece with largely the same force. This prevents canting of the workpiece when the pressing tool is pulled out and thus prevents damage to the workpiece and the pressing tool.
  • a corresponding articulation of the wiping fingers can, for example, thereby achieved that they are mounted like a seesaw; an elastic mounting can be realized, for example, by an elastomer intermediate layer on each wiping finger.
  • the rotary drive is connected to the spindle by transmission means which are arranged on the front end of the spindle, to which the spinning tool is also attached.
  • the rotary drive is formed by an electric motor and that the transmission means consist of two belt pulleys and a multiple or poly-V belt drive. With these means a simple but reliable drive of the spindle is achieved.
  • a workpiece ejector which can be moved axially relative to these two can be provided on the pressing and rolling machine according to the invention centrally in the spindle and in the pressing tool.
  • the pusher can be actuated by suitable actuating means, e.g. a hydraulically actuated piston-cylinder unit are moved so that the ejector pushes the workpiece from the pressing tool with its end face facing the workpiece. This pushing of the workpiece by the ejector can take place in addition to the removal of the workpiece by the workpiece scraper.
  • connection means for the centered attachment of additional tool parts or measuring devices on its front end lying on the end face of the pressing tool With the additional tool parts, a time-saving, modular structure of the spinning tool for adaptation to different workpieces to be produced on the spinning and rolling machine is possible.
  • the measuring devices With the measuring devices, the pressure rolling machine can be checked, for example, with regard to its setting and working accuracy and its wear, and on the basis of the test results readjusted and calibrated.
  • the additional tool part is preferably a workpiece centering insert, which ensures that the workpiece is exactly centered on the spinning tool, as a result of which the workpieces produced on the spinning roll machine obtain very good concentricity.
  • the measuring device it is preferably provided that it comprises a measuring head and a measuring sensor in the form of a finger or a disk, and that, in particular, courses of pressure roller contours relative to the pressure tool can be detected.
  • Such measuring heads are known per se from other applications, but can also be used in the press-rolling machine according to the invention for their testing and calibration, a suitable sensor then being used depending on the desired measuring purpose.
  • the measuring head can, for example, supply electrical measuring signals which vary depending on the degree of deformation or deflection of the sensor, such as occur in the event of concentricity inaccuracies of the pressure roller and / or the pressure tool. After evaluating these sensor signals, an appropriate adjustment of the spinning roll machine and its parts can then be carried out in order to again ensure precise calibration and thus high product quality.
  • the exemplary embodiment of the press-rolling machine 1 shown here has a machine frame 10 as the supporting part.
  • a first guide 12 is built, on which a spindle slide 23 in the direction of the arrow 29 is guided.
  • a slide drive unit 24 is provided within the guide 12 and below the spindle slide 23 for actuating the spindle slide 23.
  • a spindle 2 is mounted on the spindle slide 23 and can be driven in rotation about a central axis of rotation 20.
  • a rotary drive 3 which is arranged above the spindle 2 and which consists of an electric motor 3 ′ with a pulley 32 arranged on its axis of rotation 30 and a second pulley 22 arranged near the right end 21 of the spindle 2, is used to generate the rotary movement of the spindle 2 and a belt drive 33 guided over the two pulleys 22 and 32 from here a total of three individual belts, for example V-belt or poly-V belt.
  • the electric motor 3 ' is arranged on a motor mount 34 which is arranged with the spindle 2 on the spindle slide 23 and can be moved together with the latter in the direction of the movement arrow 29.
  • an exchangeable pressing tool 4 is attached by means of a flange 42, which here has the shape of a cylinder which is rotationally symmetrical with respect to the spindle axis of rotation 20.
  • a hydraulically actuated piston-cylinder unit 54 is provided within the spindle 2, by means of which the workpiece ejector 5 can be moved in the direction of the arrow 59 in the axial direction of the spindle.
  • the ejector 5 is formed with connecting means 51, here with an undercut, T-shaped groove, which are used to attach additional tool parts or other devices, in particular measuring devices.
  • a conical opening with an inner cone 44 is provided on the free front side 41 of the pressing tool 4, which serves to center the additional tool parts or measuring devices mentioned.
  • a second guide 18 is arranged on the machine frame 10, on which a second carriage 83 can be moved in the direction of the spindle in the axial direction of the spindle 89.
  • a workpiece stripper 8 which consists of an annular support part 84 screwed to the carriage 83 with a central opening 87 and two stripper fingers 85, 85 '.
  • An elastomer layer 86, 86 ' is provided between the carrier part 84 and each wiper finger 85, 85', which ensures a certain relative mobility of the wiper fingers 85, 85 'relative to one another and to the carrier part 84.
  • the carriage 83 does not need its own drive for the displacement; it is simply shifted passively here. In the direction of movement to the left, the displacement path of the carriage 83 is limited by a stop 88 attached to the guide 18. Depending on the purpose and conditions of use of the press-rolling machine 1, the stop 88 can be fixed at a suitable point on the guide 18.
  • a part 10 'of the machine frame 10 extends upwards.
  • a counter-holder 6 and two pressure rollers are held, only one pressure roller 7 being visible in the drawing.
  • the counter-holder 6 consists of an essentially cylindrical body which is rotatably mounted in a guide 63 and can be displaced in the axial direction of the spindle in the direction of the movement arrow 69.
  • the central axis of the counter-holder 6 is aligned with the central axis 20 of the spindle 2 and the pressing tool 4.
  • the counter-holder 6 is formed with an end face 61, the end face of which runs parallel and concentrically to the end face 41 of the pressing tool 4.
  • the counter holder 6 is equipped with a suitable actuating device 64, e.g. a hydraulic piston-cylinder unit.
  • one of the two pressure rollers 7 is finally visible, which is rotatable about an axis of rotation 70 and which can be moved in the direction of the arrow 79 by means of a suitable guide and actuation device 73.
  • the direction of movement 79 extends in a direction perpendicular to the axis of rotation 20 of the spindle 2, ie in the spindle radial direction.
  • the spinning roller 7 in this spinning and rolling machine 1 also has movability in the axial direction of the spindle.
  • the second pressure roller is of identical design and is arranged offset by 180 ° about the spindle axis 20 in relation to the first pressure roller 7.
  • Three pressure rollers 7 can also be provided, which are then preferably arranged symmetrically at 120 ° intervals around the pressure tool 4.
  • a workpiece blank is first guided in the spindle radial direction in front of the end face of the counter-holder 61.
  • the spindle 2 is moved to the right in the spindle axial direction, the pressing tool 4 passing through the opening 87 in the workpiece scraper 8 until the end face 41 of the pressing tool 4 comes into contact with the workpiece blank.
  • the counter holder 6 is moved to the left until the workpiece blank is firmly clamped between the end faces 41, 61 of the pressing tool 4 and counter holder 6.
  • the workpiece stripper 8 lies with its stripping fingers 85, 85 'to the left of the workpiece blank.
  • the pressure rollers 7 are fed in the radial direction of the spindle and then the spindle 2 is moved to the right together with its rotary drive 3 and the pressure tool 4 as well as the workpiece blank and the counterholder 6 until the pressure rolling process has ended.
  • the feed movement is carried out correspondingly far, the slide 83 being passively moved to the right with the workpiece scraper 8 if required.
  • the pressure rollers 7 are moved back again and the spindle 2 is moved to the left, the workpiece still on the pressure tool 4 taking the workpiece scraper 8 to the left until the carriage 83 hits the stop 88 with its slide 83.
  • FIGS. 2a to 2f show various essential work steps in the forming process.
  • the right end of the spindle 2 is shown with the pressing tool 4, which can be rotated about the axis of rotation 20.
  • all of FIGS. 2a to 2f show a workpiece 9, the end of the counter holder 6 and the one of two pressure rollers 7, each in a sectional view.
  • the part of the workpiece scraper 8 coming into contact with the workpiece 9 is shown.
  • the pressing tool 4 and the counter holder 6 are spaced apart from one another, so that the blank of the workpiece 9 can be fed in the radial direction of the spindle.
  • the pressure rollers 7 are still out of engagement with the workpiece 9 here.
  • the workpiece scraper 8 surrounds the pressure tool 4, likewise without being in contact with the workpiece 9.
  • the pressure-rolling machine moves to the right by the displacement path L 1 by moving the spindle 2 with the pressure tool 4.
  • the right end of the pressing tool 4 is brought into contact with the workpiece 9, whereby this is firmly clamped between the pressing tool 4 and the counter-holder 6.
  • the spindle 2 is moved to the right by a further displacement path L 2 , as shown in FIG. 2c, as a result of which the pressure rollers 7 come into engagement with the peripheral region of the workpiece 9.
  • the counterholder 6 is now moved to the right together with the spindle 2, the clamping of the workpiece 9 being retained.
  • the workpiece scraper 8 also surrounds the pressing tool 4 in the part not occupied by the workpiece 9, the workpiece scraper 8 having previously maintained its position.
  • the spindle 2 is first moved back by a displacement path L 4 , ie moved to the left in FIG. 2e, the workpiece stripper 8 coming into contact with the left end edge 93 of the workpiece 9.
  • the workpiece stripper 8 can follow the return movement of the spindle 2 by a certain displacement path 1 until the workpiece stripper 8, as explained with reference to FIG. 1, runs against the associated stop 88.
  • the workpiece scraper 8 and the workpiece 9 can no longer follow the spindle 2, which moves further to the left by the displacement path L 5 , as shown in FIG. 2f.
  • the pressing tool 4 is thus pulled out of the workpiece 9, as the transition from FIG. 2e to FIG. 2f shows.
  • the cycle time for forming a workpiece can be greatly reduced because it is not necessary to move the workpiece blank and the workpiece in the axial direction of the spindle when placing or removing it.
  • Figure 3 of the drawing shows the free end of the pressing tool 4 in longitudinal section in an enlarged view, the right end of the workpiece ejector 5 being visible in the center of the pressing tool 4.
  • the workpiece ejector 5, like the pressing tool 4, is arranged concentrically to the axis of rotation 20 of the spindle.
  • the workpiece ejector 5 can be moved in the axial direction in the direction of the movement arrow 59.
  • the connecting means 51 can be seen, which are designed in the form of an undercut, T-shaped groove which runs through the ejector 5 in a direction perpendicular to the plane of the drawing.
  • an additional tool part 40 is connected to the pressing tool 4 at its front end 41.
  • this additional tool part 40 is a workpiece centering insert, which, with its central part projecting beyond the end face 41 of the pressing tool 4, engages in a correspondingly dimensioned opening in the workpiece and thus centers the latter on the pressing tool 4.
  • an inner cone 44 is provided on the pressing tool 4 and an outer cone 44 ′ on the additional tool part 40.
  • the additional tool part 40 By means of a head bolt 43 arranged between the end of the ejector 5 and the additional tool part 40, the additional tool part 40 with its outer cone 44 'is drawn into the inner cone 44 of the pressing tool 4 and thereby clamped in a precisely centered manner.
  • FIG. 4 of the drawing shows an example of the attachment of a measuring device 40 ′ to the pressing tool 4 instead of the additional tool part 40 described previously with reference to FIG. 3.
  • the pressing tool 4 is here unchanged compared to the pressing tool described in FIG. 3; here too the ejector 5 is located concentrically in the interior of the pressing tool 4 and can be moved back and forth in the direction of the movement arrow 59.
  • the front end 41 of the pressing tool 4 is also formed with an inner cone 44, which is used for the central clamping of the measuring device 40 '.
  • this has a correspondingly shaped outer cone 44 ', which is again pulled firmly into the inner cone 44 by means of a head bolt 43.
  • the measuring device has a measuring head 45, on the outer, i.e. in Figure 4 right end a sensor in the form of a measuring disc 46 is arranged.
  • the contour of the pressure roller 7 can preferably be scanned by means of this measuring disc 46 in order to be able to carry out an adjustment and calibration of the pressure rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Press Drives And Press Lines (AREA)

Claims (7)

  1. Machine (1) à repousser comportant un bâti (10) de machine, une broche (2), un outil (4) à repousser monté à une extrémité frontale (21) de la broche (2), un appui (6) mobile dans la direction axiale, en alignement avec la broche (2) et destiné à une pièce (9) mise en place sur l'outil (4) à repousser et comportant au moins deux galets (7) à repousser tournants qui peuvent être approchés dans la direction radiale (79) de la broche en étant guidés dans le bâti (10) de machine, la broche (2) pouvant, pour exécuter une opération de repoussage, être déplacée avec l'appui (6) dans la direction axiale de la broche par rapport au bâti (10) de machine et aux galets (7) à repousser, un déchaussoir (8) de pièce étant prévu, lequel déchaussoir peut, en étant guidé sur le bâti (10) de machine, être déplacé librement parallèlement à la broche (2) au moyen de celle-ci et la course (1) de déplacement du déchaussoir (8) de pièce étant limitée dans la direction de recul de la broche (2) de telle manière que la course (1) de déplacement du déchaussoir (8) de pièce est inférieure à la course (L) de déplacement de la broche (2),
       caractérisée en ce
    - que la broche (2) peut être entraînée en rotation au moyen d'un mécanisme (3) d'entraînement en rotation,
    - que pour exécuter une opération de repoussage, le mécanisme (3) d'entraînement en rotation de la broche (2) peut être déplacé avec celle-ci dans la direction axiale de la broche,
    - que le déchaussoir (8) de pièce est réalisé en forme de fourche avec au moins deux ergots (85, 85'), et
    - que les ergots (85, 85') du déchaussoir présentent un montage flexible et/ou élastique en vue de compenser des dissymétries entre les zones de contact de la pièce (9) et des ergots (85, 85') du déchaussoir.
  2. Machine à repousser selon la revendication 1, caractérisée en ce que le mécanisme (3) d'entraînement en rotation est relié à la broche (2) par des moyens (22, 32, 33) de transmission qui sont disposés à l'extrémité frontale (21) de la broche (2) sur laquelle est également monté l'outil (4) à repousser.
  3. Machine à repousser selon la revendication 2, caractérisée en ce que le mécanisme (3) d'entraînement en rotation est formé par un moteur (3') électrique et que les moyens de transmission sont constitués de deux poulies (22, 32) et d'un entraînement (33) à courroie multiple ou multi-V.
  4. Machine à repousser selon l'une des revendications 1 à 3, caractérisée en ce que dans la broche (2) et dans l'outil (4) à repousser, il est prévu en position centrée un éjecteur (5) de pièce qui peut être déplacé axialement par rapport à ladite broche et à l'outil à repasser.
  5. Machine à repousser selon la revendication 4, caractérisée en ce que l'éjecteur (5) de pièce comporte, à son extrémité frontale située sur la face frontale (41) de l'outil (4) à repousser, des moyens d'assemblage (51) destinés à monter en position centrée des éléments d'outil (40) supplémentaires ou des dispositifs de mesure (40').
  6. Machine à repousser selon la revendication 5, caractérisée en ce que l'élément d'outil (40) supplémentaire est un insert de centrage de pièce.
  7. Machine à repousser selon la revendication 5, caractérisée en ce que le dispositif de mesure (40') comprend une tête de mesure (45) et un capteur de mesure (46) se présentant sous la forme d'un doigt ou d'une plaque et que le dispositif de mesure permet notamment de détecter des positions de contours de galets à repousser par rapport à l'outil (4) à repousser.
EP94100538A 1993-02-19 1994-01-15 Machine à repousser Expired - Lifetime EP0611612B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/020,061 US5323630A (en) 1993-02-19 1993-02-19 Flow-roller machine
US20061 1993-02-19

Publications (2)

Publication Number Publication Date
EP0611612A1 EP0611612A1 (fr) 1994-08-24
EP0611612B1 true EP0611612B1 (fr) 1997-03-19

Family

ID=21796526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100538A Expired - Lifetime EP0611612B1 (fr) 1993-02-19 1994-01-15 Machine à repousser

Country Status (6)

Country Link
US (1) US5323630A (fr)
EP (1) EP0611612B1 (fr)
JP (1) JPH06339733A (fr)
CA (1) CA2113337A1 (fr)
DE (1) DE59402107D1 (fr)
ES (1) ES2101361T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878229A (zh) * 2014-03-31 2014-06-25 成都振中电气有限公司 一种型材旋压止退装置

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4437212C2 (de) * 1994-10-18 2000-11-16 Leifeld Gmbh & Co Drückwalzmaschine
EP1347849B1 (fr) * 2001-01-04 2005-05-25 Leifeld Metal Spinning GmbH Procede de fluotournage et dispositif de fluotournage
US7487656B2 (en) * 2007-03-30 2009-02-10 The Gates Corporation Method of spinning multiple parts
DE102007041149B3 (de) * 2007-08-30 2009-04-02 Technische Universität Dresden Verfahren und Vorrichtung zum Querwalzen abgestufter Hohlwellen oder zylindrischer Hohlteile aus einem Rohr
KR101337518B1 (ko) * 2012-01-09 2013-12-06 유도로보틱스 주식회사 금속 신장 스피닝 가공 방법
CN103302156A (zh) * 2012-03-16 2013-09-18 上海先欧机床制造有限公司 同异步双旋轮旋压机
CN103934343B (zh) * 2014-04-21 2015-09-16 浙江大学 带辅助旋轮的无芯模旋压机及旋压方法
CN103934344B (zh) * 2014-04-21 2015-11-04 浙江大学 复合式板料旋压机及其旋压方法
USD766347S1 (en) * 2014-04-29 2016-09-13 Chandra Maurya Pte Ltd Napkin roller machine
ES2665845T3 (es) 2015-10-20 2018-04-27 Leifeld Metal Spinning Ag Máquina de conformación para presionar/laminar a presión y procedimiento para presionar/laminar a presión
CN109382435B (zh) * 2017-08-08 2020-06-16 航天特种材料及工艺技术研究所 一种内旋压设备
CN112518388A (zh) * 2020-11-24 2021-03-19 嘉善翔宇旅游用品有限公司 一种箱包饰件加工定位装置

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US1866895A (en) * 1931-03-23 1932-07-12 Maier John Forming apparatus
US3262191A (en) * 1962-12-28 1966-07-26 Budd Co Method of forming wheel disks
DE1652595B2 (de) * 1968-02-23 1979-06-28 Leifeld & Co, 4730 Ahlen Verfahren zur Herstellung von Gasflaschen
DE2328387A1 (de) * 1973-06-04 1975-01-02 Strobel Christian Hochleistungs-verfahren zum abstrecken bzw. zum einziehen von rohrkoerpern, sowie vorrichtung zu seiner anwendung auf das herstellen von behaeltern und rohren aus stahl und nichteisenmetallen
DD121281A1 (fr) * 1975-08-27 1976-07-20
DD204047A1 (de) * 1981-10-06 1983-11-16 Karlheinz Wenke Vorrichtung fuer metalldrueckarbeiten
DD223083A1 (de) * 1983-12-21 1985-06-05 Aribert Schwager Verfahren und vorrichtung zur bearbeitung des bodens von drueckteilen
CH686817A5 (de) * 1992-03-04 1996-07-15 Grob Ernst Fa Vorrichtung und Verfahren zum Herstellen eines wenigstens innen gerade oder schraeg zur Werkstueckachse profilierten hohlen Werkstuecks.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103878229A (zh) * 2014-03-31 2014-06-25 成都振中电气有限公司 一种型材旋压止退装置
CN103878229B (zh) * 2014-03-31 2015-09-09 成都振中电气有限公司 一种型材旋压止退装置

Also Published As

Publication number Publication date
JPH06339733A (ja) 1994-12-13
ES2101361T3 (es) 1997-07-01
US5323630A (en) 1994-06-28
CA2113337A1 (fr) 1994-08-20
DE59402107D1 (de) 1997-04-24
EP0611612A1 (fr) 1994-08-24

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