EP0032518B1 - Presse de transformation avec un dispositif de came - Google Patents

Presse de transformation avec un dispositif de came Download PDF

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Publication number
EP0032518B1
EP0032518B1 EP80100237A EP80100237A EP0032518B1 EP 0032518 B1 EP0032518 B1 EP 0032518B1 EP 80100237 A EP80100237 A EP 80100237A EP 80100237 A EP80100237 A EP 80100237A EP 0032518 B1 EP0032518 B1 EP 0032518B1
Authority
EP
European Patent Office
Prior art keywords
cam
metal
adjusting
press according
disc
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
Application number
EP80100237A
Other languages
German (de)
English (en)
Other versions
EP0032518A1 (fr
Inventor
Walter Ing. Grad. Flamme
Oskar Ing. Grad. Rahn
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.)
L Schuler GmbH
Original Assignee
L Schuler 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 L Schuler GmbH filed Critical L Schuler GmbH
Priority to EP80100237A priority Critical patent/EP0032518B1/fr
Priority to DE8080100237T priority patent/DE3066531D1/de
Priority to AT80100237T priority patent/ATE6214T1/de
Publication of EP0032518A1 publication Critical patent/EP0032518A1/fr
Application granted granted Critical
Publication of EP0032518B1 publication Critical patent/EP0032518B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G21/00—Mechanical apparatus for control of a series of operations, i.e. programme control, e.g. involving a set of cams
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • 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
    • B21J13/08—Accessories for handling work or tools
    • 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 a forming press, in particular a multi-stage press, with a control cam device, for example for actuating gripper tongs for the transport of a workpiece from one stage to a subsequent one or from a shear station to a press stage or for actuating an ejector pin of an ejector device or a shear knife , wherein the control cam device has a control shaft with at least one cam disk which can be connected to it by means of a clamping device and on which an actuating member runs or rolls.
  • Such a forming press is known, for example, from DE-B-1 36 913, the clamping device being realized by the fact that the cam can be clamped on the driven control shaft by means of screws, which can be clamped under different central angles.
  • Forming presses in particular multi-stage presses, usually have a series of gripper tongs for the transport of the workpiece from one stage to a subsequent stage or from the shear station to a pressing stage, the movement of which is effected via a control cam device.
  • This cam device consists of a control shaft driven by the forming press and one, but usually several cam disks attached to this shaft.
  • the cams are fastened via supports connected to the control shaft, which are provided with Hirth teeth. In this way, the cam disks can be rotated relative to the control shaft after loosening fasteners, and the sequence of movements of the gripper tongs can thus be postponed.
  • cam sets are arranged on the control shaft instead of individual cam disks, each cam disk set consisting of two closely spaced cam disks of mostly the same shape, on which the control element for actuating the gripper pliers runs simultaneously.
  • These two cams can not only be rotated relative to the control shaft, but also against each other, which can also increase the length of time the gripper tongs stay in the press room.
  • the dwell time can also be increased by additionally assigning an intermediate washer to the cam disk set, which is usually located between the two cam disks and has a cam disk segment to bridge the gap that results when the two cam disks are rotated strongly.
  • control cam devices designed in this way can also be used for other purposes, for example for controlling the shear knife or the ejector bolts.
  • the turning of the cam disks relative to the control shaft and against each other must be done by hand in the previously known forming presses after loosening a number of fasteners. As is not necessary to explain this in detail, this is cumbersome and takes a lot of time, particularly in the case of multi-stage presses.
  • the invention is therefore based on the object of significantly simplifying and shortening the adjustment process with respect to the cam disks.
  • the clamping device can be actuated by the application of pressure medium and in that a coupling device is provided for rotating the cam disc (s) relative to the control shaft, each consisting of a gear wheel connected to the cam disc and an adjusting pinion meshing with it exists, which can be connected to an adjusting shaft driven by an adjusting motor.
  • a coupling device is provided for rotating the cam disc (s) relative to the control shaft, each consisting of a gear wheel connected to the cam disc and an adjusting pinion meshing with it exists, which can be connected to an adjusting shaft driven by an adjusting motor.
  • At least one cam disk set each with two cam disks arranged close to one another but rotatable relative to one another, is attached to the control shaft, each of the two cam disks being assigned its own coupling device. In this way, it is not only possible to postpone the activation of the respective control member, but also to influence its duration. If necessary, several sets of cams can be attached to the control shaft.
  • an intermediate disk with a cam segment is mounted, which engages in elongated holes in the two cam disks with a driving pin.
  • each adjustment pinion can be connectable to the adjustment shaft via a magnetically switchable tooth coupling.
  • All adjusting pinions should preferably be arranged side by side on an adjusting shaft which is driven by an adjusting motor, so that only this one motor is required.
  • the clamping device is designed as a hydraulic clamping sleeve, wherein a clamping sleeve can be provided for each cam disk or cam disk set.
  • the invention further provides that the adjusting motor is designed as a servomotor, which is expediently combined with an incremental encoder, so that the respective adjusting process can be monitored precisely.
  • FIG. 1 shows a control cam device 1 of a five-stage press for the control of gripper tongs (not shown here), which is intended to transport a workpiece from one stage to the next.
  • the control cam device 1 has a control shaft 5 which is mounted in the roller bearings 2, 3 in the machine frame 4 and on which a total of five sets of cam plates 6, 7, 8, 9, 10 are arranged. These sets of cams 6, 7, 8, 9, 10 are firmly connected to the control shaft 5 during operation of the five-stage press, but can be detached from it for the adjustment.
  • each cam disk set 6, 7, 8, 9, 10 consists of two cam disks and an intermediate disk, each cam disk being connected to a spur gear 11 to 20.
  • spur gears 11 to 20 each mesh with an adjusting pinion 21 to 30, which are mounted on an adjusting shaft 31 arranged next to the control shaft 5.
  • a magnetically switchable tooth coupling 32 to 41 is provided for each of these adjusting pinions 21 to 30.
  • the respective pinion 21 to 30 is entrained by the adjusting shaft 31 by electrical control of these toothed clutches 32 to 41, whereby it rotates the spur gear 11 to 20 meshing with it and the cam disc connected to it relative to the control shaft 5.
  • the adjusting shaft 31 has a drive gear 42 at the upper end, which meshes with a drive pinion 44 seated on the motor shaft 43.
  • the motor shaft 44 is connected at one end via an elastic coupling 45 to a servomotor 46 and at the other end to an incremental encoder 47 which serves to display the respective position of the motor shaft 44. With the help of the servo motor 46, the cams can be rotated, the toothed clutches 32 to 41 are controlled.
  • FIG. 2 shows a cross section through the bottom 10 of the cam disk sets 6, 7, 8, 9, 10 shown in FIG. 1, from which the structure thereof can be seen.
  • the cam disk set 10 consists of two cam disks 48, 49, which are screwed to the adjacent spur gear 19, 20 by means of driving pins 50, 51 and screws 52.
  • the spur gears 19, 20 can be connected to the control shaft 5 via a common clamping sleeve 53 if the latter is hydraulically loaded via an axial oil supply line 54 and a radial branch 55.
  • an intermediate disk 56 is arranged, which is connected to the cams 48, 49 only via a further driver pin 57.
  • This - common - driver pin 57 each encompasses an elongated hole running in the circumferential direction, as can be seen in FIG. 3, which shows a side view of the cam disk set 10.
  • the elongated holes 61, 62 already mentioned are provided in the two cam disks 48, 49, which accordingly restrict the freedom of movement of the intermediate disk 56 via the driving pin 57.
  • this driver pin 57 is framed by the opposite ends of the elongated holes 61, 62.
  • FIG. 2 also shows that the two spur gears 19, 20 for adjusting the cams 48, 49 are in engagement with the two adjusting pinions 29, 30, which are mounted on the adjusting shaft 31 via roller bearings 63. When the forming press is in operation, they accordingly rotate with the cam disks 48, 49 or their spur gears 19, 20.
  • the adjustment pinions 29, 30 can each be coupled to the adjustment shaft 31 independently of one another via the toothed couplings 40, 41. If only one of the two toothed clutches 40, 41 intended for cam disk set 10 is actuated, then only one cam disk 48, 49 is rotated with respect to control shaft 5, so that the cam flank widens. If, on the other hand, both tooth clutches 40, 41 are actuated at the same time, only an angular displacement occurs without changing the cam shape.
  • cam disk sets 6, 7, 8, 9 also shown in FIG. 1 are designed in exactly the same way as the cam disk set 10 shown in more detail in FIG. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Press Drives And Press Lines (AREA)
  • Forging (AREA)
  • Transmission Devices (AREA)

Claims (10)

1. Presse de formage, en particulier presse de formage à plusieurs postes de travail, possédant un dispositif à came(s) de commande (1), par exemple pour commander des pinces servant au transport d'une pièce d'un poste à un poste suivant ou d'une station de cisaillement à un poste de pressage, pour commander la tige d'éjection d'un dispositif d'éjection ou pour commander une lame de cisaillement, le dispositif à came(s) de commande (1) comprenant un arbre de commande (5) avec au moins une came discoïde (48, 49) qui peut être reliée à l'arbre par un dispositif de serrage (54) et sur laquelle glisse ou roule un organe de commande, caractérisée en ce que le dispositif de serrage (54) est commandé par un fluide de pression et qu'un dispositif d'accouplement est prévu pour tourner la came ou les cames (48, 49) par rapport à l'arbre (5), le dispositif d'accouplement étant constitué, pour chaque came (48, 49), d'une roue dentée (11 à 20) solidaire de la came et d'un pignon de positionnement d'être relié en rotation à un arbre de positionnement (31) entraîné par un moteur de positionnement (46).
2. Presse selon la revendication 1, caractérisée en ce que l'arbre de commande (5) porte au moins un jeu de cames (6 à 10) comprenant deux cames (48, 49) juxtaposées mais susceptibles d'être tournées l'une par rapport à l'autre et à chacune desquelles est conjugué un dispositif d'accouplement individuel.
3. Presse selon la revendication 2, caractérisée en ce que plusieurs jeux de cames (6 à 10) sont disposée sur l'arbre de commande (5).
4. Presse selon la revendication 2 ou 3, caractérisée en ce que les deux canes juxtaposées (48, 49) de chaque jeu sont séparées par un disque intermédiaire (56) portant une goupille d'entraînement (57) qui pénètre dans des trous oblongs (61, 62) des deux cames (48, 49).
5. Presse selon une des revendications 1 à 4, caractérisée en ce que chaque pignon de positionnement (21 à 30) peut être relié à l'arbre de positionnement (31) par l'intermédiaire d'un accouplement à dents à commande électromagnétique (32 à 41).
6. Presse selon une des revendications 1 à 5, caractérisée en ce que tous les pignons de positionnement (21 à 30) sont disposés l'un à côté de l'autre sur un arbre de positionnement (31) qui est entraîné en rotation par un moteur de positionnement (46).
7. Presse selon l'une des revendications 1 à 6, caractérisée en ce que le dispositif de serrage est formé par un manchon de serrage hydraulique (53).
8. Presse selon la revendication 7, caractérisée en ce qu'un manchon de serrage (53) est prévu pour chaque came (48, 49) ou pour chaque jeu de cames (6 à 10).
9. Presse selon une des revendications 1 à 8, caractérisée en ce que le moteur de positionnement est un servomoteur (46).
10. Presse selon la revendication 9, caractérisée en ce que le servomoteur (46) est combiné avec un indicateur d'incréments (47).
EP80100237A 1980-01-18 1980-01-18 Presse de transformation avec un dispositif de came Expired EP0032518B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP80100237A EP0032518B1 (fr) 1980-01-18 1980-01-18 Presse de transformation avec un dispositif de came
DE8080100237T DE3066531D1 (en) 1980-01-18 1980-01-18 Transforming-press with a cam device
AT80100237T ATE6214T1 (de) 1980-01-18 1980-01-18 Umformpresse mit einer steuerkurveneinrichtung.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80100237A EP0032518B1 (fr) 1980-01-18 1980-01-18 Presse de transformation avec un dispositif de came

Publications (2)

Publication Number Publication Date
EP0032518A1 EP0032518A1 (fr) 1981-07-29
EP0032518B1 true EP0032518B1 (fr) 1984-02-15

Family

ID=8186573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100237A Expired EP0032518B1 (fr) 1980-01-18 1980-01-18 Presse de transformation avec un dispositif de came

Country Status (3)

Country Link
EP (1) EP0032518B1 (fr)
AT (1) ATE6214T1 (fr)
DE (1) DE3066531D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT209421Z2 (it) * 1986-12-31 1988-10-05 Garlaschi Eufemia Dispositivo per il ricambio rapido di camme in una pressa per laproduzione di rivetti e similari.
EP1138414A1 (fr) * 2000-04-01 2001-10-04 Schumag Aktiengesellschaft Arrangement d'arbre à cames et galet suiveur de came, transport transversal, presse à étages multiples et methode pour l'ajustement du profile d'une came
CN103192009B (zh) * 2013-03-13 2016-08-17 上海明隽电子有限公司 可调式打头机撞头凸轮
KR102346475B1 (ko) * 2021-08-26 2022-01-03 효동기계공업(주) 캠 자동 조절장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3165766A (en) * 1961-08-29 1965-01-19 Nat Machinery Co Transfer for metal forming machine
US3695088A (en) * 1969-08-15 1972-10-03 Aerpat Ag Multi-stage forming machine
US3685070A (en) * 1970-06-26 1972-08-22 Nat Machinery Co The Forging machine transfer
DE2549319C3 (de) * 1975-11-04 1981-04-02 Malmedie & Co Maschinenfabrik GmbH, 4000 Düsseldorf Quertransporteinrichtung an einer Mehrstufenpresse

Also Published As

Publication number Publication date
DE3066531D1 (en) 1984-03-22
ATE6214T1 (de) 1984-03-15
EP0032518A1 (fr) 1981-07-29

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