EP0032518B1 - Transforming-press with a cam device - Google Patents

Transforming-press with a cam device 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
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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
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German (de)
French (fr)
Other versions
EP0032518A1 (en
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
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Filing date
Publication date
Application filed by L Schuler GmbH filed Critical L Schuler GmbH
Priority to DE8080100237T priority Critical patent/DE3066531D1/en
Priority to AT80100237T priority patent/ATE6214T1/en
Priority to EP80100237A priority patent/EP0032518B1/en
Publication of EP0032518A1 publication Critical patent/EP0032518A1/en
Application granted granted Critical
Publication of EP0032518B1 publication Critical patent/EP0032518B1/en
Expired legal-status Critical Current

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    • 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.

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  • 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)

Abstract

1. Metal-shaping press, in particular a multistage press, with a control-cam device (1) for actuating, for example, gripping tongs for transporting a work-piece from one stage to the next, or from a shearing station to a pressing stage, or for actuating the ejector pin of an ejector device, or for actuating a shearing blade, the control-cam device (1) possessing a camshaft (5) carrying at least one cam disc (48, 49) which can be connected to it by means of a clamping arrangement (53), an actuating element running or rolling on this cam disc (48, 49) characterised in that the clamping arrangement (53) can be actuated by subjecting it to the action of a pressure medium, and in that, for the purpose of twisting the cam disc, or discs (48, 49), relative to the camshaft (5), a coupling device is provided, comprising, in each case, a gearwheel (11 to 20), which is fastened to the cam disc (48, 49), and an adjusting pinion (21 to 30) which meshes with this gearwheel (11 to 20) and which can be coupled to an adjusting shaft (31), driven by an adjusting motor (46).

Description

Die Erfindung bezieht sich auf eine Umformpresse, insbesondere Mehrstufenpresse, mit einer Steuerkurveneinrichtung, beispielsweise für eine Betätigung von Greiferzangen für den Transport eines Werkstückes von einer Stufe zu einer folgenden oder von einer Scherstation zu einer Pressstufe oder für eine Betätigung eines Auswerferbolzens einer Auswerfereinrichtung oder eines Schermessers, wobei die Steuerkurveneinrichtung eine Steuerwelle mit wenigstens einer mittels einer Klemmeinrichtung mit ihr verbindbaren Kurvenscheibe aufweist, auf der ein Betätigungsorgan abläuft oder abrollt.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.

Eine derartige Umformpresse ist beispielsweise aus der DE-B-1 36 913 bekannt, wobei die Klemmerinrichtung durch die mittels Schrauben bewirkbare, unter verschiedenen Zentriwinkeln mögliche Anklemmbarkeit der Kurvenscheibe auf der angetriebenen Steuerwelle verwirklicht ist.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.

Umformpressen, insbesondere Mehrstufenpressen, weisen für den Transport des Wekstückes von einer Stufe zu einer folgenden oder von der Scherstation zu einer Pressstufe meist eine Reihe von Greiferzangen auf, deren Bewegung über eine Steuerkurveneinrichtung bewirkt wird. Diese Steuerkurveneinrichtung besteht aus einer von von der Umformpresse angetriebenen Steuerwelle und einer, meist jedoch mehreren auf dieser Welle befestigten Kurvenscheiben.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.

Die Befestigung der Kurvenscheiben geschieht dabei über mit der Steuerwelle verbundene Träger, die mit einer Hirth-Verzahnung versehen sind. Auf diese Weise lassen sich die Kurvenscheiben nach Lösen von Befestigungsmitteln relativ zur Steuerwelle verdrehen und damit lässt sich der Bewegungsablauf der Greiferzangen zeitlich verschieben.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.

Vielfach sind auf der Steuerwelle statt einzelner Kurvenscheiben jeweils Kurvenscheibensätze angeordnet, wobei jeder Kurvenscheibensatz aus zwei dicht nebeneinander angeordneten Kurvenscheiben von meist gleicher Formgebung besteht, auf denen das Steuerorgan für die Betätigung der Greiferzangen gleichzeitig abläuft. Diese beiden Kurvenscheiben können nicht nur relativ zur Steuerwelle, sondern auch gegeneinander verdreht werden, wodurch auch die Verweildauer der Greiferzangen im Pressenraum verlängert werden kann. Die Verweildauer lässt sich zudem noch dadurch vergrössern, dass dem Kurvenscheibensatz zusätzlich noch eine Zwischenscheibe zugeordnet wird, die meist zwischen den beiden Kurvenscheiben sitzt und ein Kurvenscheibensegment zur Überbrückung der bei starker Verdrehung der beiden Kurvenscheiben sich ergebenden Lücke aufweist.In many cases 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.

Im übrigen lassen sich derart ausgebildete Steuerkurveneinrichtungen auch für andere Zwecke, beispielsweise für die Steuerung des Schermessers oder der Auswerferbolzen, verwenden.In addition, 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.

Das Verdrehen der Kurvenscheiben relativ zur Steuerwelle und gegeneinander muss bei den bisher bekannten Umformpressen von Hand nach Lösen einer Reihe von Befestigungsmitteln geschehen. Dies ist, wie keiner näheren Erläuterung bedarf, umständlich und nimmt insbesondere bei Mehrstufenpressen sehr viel Zeit in Anspruch. Der Erfindung liegt somit die Aufgabe zugrunde, den Verstellvorgang bezüglich der Kurvenscheiben wesentlich zu vereinfachen und zu verkürzen.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.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, dass die Klemmeinrichtung durch Druckmittelbeaufschlagung betätigbar ist, und dass zur Verdrehung der Kurvenscheibe(n) relativ zu der Steuerwelle eine Kupplungseinrichtung vorgesehen ist, die aus je einem mit der Kurvenscheibe verbundenen Zahnrad und einem mit diesem kämmenden Verstellritzel besteht, das mit einer von einem Verstellmotor angetriebenen Verstellwelle verbindbar ist. Durch diese Ausbildung können die Kurvenscheiben durch Ansteuerung eines Verstellmotors gegenüber der Steuerwelle verdreht werden, wobei die Verbindung zwischen den Kurvenscheiben und der Steuerwelle durch entsprechende Druckmittelbeaufschlagung der Klemmeinrichtung schnell gelöst oder wieder hergestellt werden kann.This object is achieved according to the invention in that 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. With this design, the cam disks can be rotated with respect to the control shaft by actuating an adjusting motor, the connection between the cam disks and the control shaft being able to be released or re-established quickly by appropriate pressurizing of the clamping device.

In Ausbildung der Erfindung ist vorgesehen, dass auf der Steuerwelle wenigstens ein Kurvenscheibensatz mit jeweils zwei dicht nebeneinander angeordneten, jedoch gegeneinander verdrehbaren Kurvenscheiben angebracht ist, wobei jeder der beiden Kurvenscheiben eine eigene Kupplungseinrichtung zugeordnet ist. Auf diese Weise läst sich nicht nur die Ansteuerung des jeweiligen Steuerorgans zeitlich verschieben, sondern auch hinsichtlich ihrer Dauer beeinflussen. Soweit erforderlich, können mehrere Kurvenscheibensätze auf der Steuerwelle angebracht sein.In an embodiment of the invention it is provided that 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.

Nach einem weiteren Merkmal der Erfindung ist vorgesehen, dass jeweils zwischen den zwei nebeneinander angeordneten Kurvenscheiben eine Zwischenscheibe mit einem Kurvensegment gelagert ist, die mit einem Mitnehmerstift in Langlöcher in den beiden Kurvenscheiben eingreift. Auf diese Weise lässt sich die Dauer der Ansteuerung des jeweiligen Steuerorgans noch weiter vergrössern.According to a further feature of the invention it is provided that between each of the two cam disks arranged next to one another, an intermediate disk with a cam segment is mounted, which engages in elongated holes in the two cam disks with a driving pin. In this way, the duration of the activation of the respective control member can be increased even further.

Ferner kann jedes Verstellritzel über eine magnetisch schaltbare Zahnkupplung mit der Verstellwelle verbindbar sein. Vorzugsweise sollten alle Verstellritzel auf einer Verstellwelle nebeneinander angeordnet sein, die von einem Verstellmotor angetrieben ist, so dass nur dieser eine Motor erforderlich ist.Furthermore, 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.

Gemäss einem weiteren Merkmal der Erfindung ist vorgesehen, dass die Klemmeinrichtung als eine hydraulische Klemmhülse ausgebildet ist, wobei für jede Kurvenscheibe bzw. jeden Kurvenscheibensatz je eine Klemmhülse vorgesehen sein kann.According to a further feature of the invention, it is provided that 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.

Die Erfindung sieht ferner vor, dass der Verstellmotor als Stellmotor ausgebildet ist, der zweckmässigerweise mit einem Inkrementalgeber kombiniert ist, so dass sich der jeweilige Verstellvorgang genau überwachen lässt.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.

In der Zeichnung ist die Erfindung anhand eines Ausführungsbeispiels näher veranschaulicht.In the drawing, the invention is illustrated in more detail using an exemplary embodiment.

Es zeigen:

  • Figur 1 eine Ansicht einer Steuerkurveneinrichtung einer Fünfstufenpresse,
  • Figur 2 einen Querschnitt durch einen Kurvenscheibensatz der Steuerkurveneinrichtung gemäss Figur 1 und
  • Figur 3 eine Ansicht des Kurvenscheibensatzes gemäss Figur 2.
Show it:
  • FIG. 1 shows a view of a control cam device of a five-stage press,
  • Figure 2 shows a cross section through a set of cams of the control cam device according to Figure 1 and
  • FIG. 3 shows a view of the cam disk set according to FIG. 2.

Figur 1 zeigt eine Steuerkurveneinrichtung 1 einer Fünfstufenpresse für die Steuerung von hier nicht näher gezeigten Greiferzangen, die dem Transport eines Werkstückes von einer Stufe zur nächsten dienen soll.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.

Die Steuerkurveneinrichtung 1 weist eine in den Wälzlagern 2, 3 im Maschinenrahmen 4 gelagerte Steuerwelle 5 auf, auf der insgesamt fünf Kurvenscheibensätze 6, 7, 8, 9, 10 angeordnet sind. Diese Kurvenscheibensätze 6, 7, 8, 9, 10 sind beim Betrieb der Fünfstufenpresse mit der Steuerwelle 5 fest verbunden, können aber von dieser für die Verstellung gelöst werden.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.

Wie sich aus Fig. 2 noch deutlicher ergeben wird, besteht jeder Kurvenscheibensatz 6, 7, 8, 9, 10 aus zwei Kurvenscheiben und einer Zwischenscheibe, wobei jede Kurvenscheibe mit einem Stirnzahnrad 11 bis 20 verbunden ist.As can be seen more clearly from FIG. 2, 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.

Diese Stirnzahnräder 11 bis 20 kämmen jeweils mit einem Verstellritzel 21 bis 30, die auf einer neben der Steuerwelle 5 angeordneten Verstellwelle 31 gelagert sind. Für jede dieser Verstellritzel 21 bis 30 ist eine magnetisch schaltbare Zahnkupplung 32 bis 41 vorgesehen. Durch elektrische Ansteuerung dieser Zanhkupplungen 32 bis 41 wird das jeweilige Ritzel 21 bis 30 von der Verstellwelle 31 mitgenommen, wobei es das mit ihm kämmende Stirnzahnrad 11 bis 20 und die mit diesem verbundene Kurvencheibe relativ zur Steuerwelle 5 verdreht.These 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.

Die Verstellwelle 31 weist am oberen Ende ein Antriebszahnrad 42 auf, das mit einem auf der Motorwelle 43 sitzenden Antriebsritzel 44 in Eingriff steht. Die Motorwelle 44 ist einerends über eine elastische Kupplung 45 mit einem Stellmotor 46 und anderenends mit einem Inkrementalgeber 47 verbunden, der der Anzeige der jeweiligen Stellung der Motorwelle 44 dient. Mit Hilfe des Stellmotors 46 können somit die Kurvenscheiben verdreht werden, deren Zahnkupplungen 32 bis 41 angesteuert werden.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.

Figur 2 zeigt einen Querschnitt durch den untersten 10 der in Figur 1 dargestellten Kurvenscheibensätze 6, 7, 8, 9, 10, aus dem sich deren Aufbau ersehen lässt. Wie schon erläutert, besteht der Kurvenscheibensatz 10 aus zwei Kurvenscheiben 48, 49, die über Mitnehmerstifte 50, 51 und Schrauben 52 mit dem jeweils benachbarten Stirnzahnrad 19, 20 verschraubt sind. Die Stirnzahnräder 19, 20 können über eine gemeinsame Klemmhülse 53 mit der Steuerwelle 5 verbunden werden, wenn diese über eine axiale Ölzuführleitung 54 und einen radialen Abzweig 55 hydraulisch beaufschlagt wird.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. As already explained, 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.

Zwischen den beiden Kurvenscheiben 48, 49 ist eine Zwischenscheibe 56 angeordnet, die mit den Kurvenscheiben 48, 49 lediglich über einen weiteren Mitnehmerstift 57 in Verbindung steht. Dieser - gemeinsame - Mitnehmerstift 57 fasst jeweils in ein in Umfangsrichtung verlaufendes Langloch ein, wie sich aus Figur 3 ergibt, die eine Seitenansicht des Kurvenscheibensatzes 10 zeigt.Between the two cams 48, 49, 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.

Aus dieser Figur lässt sich ersehen, dass die identisch ausgebildeten Kurvenscheiben 48, 49 so weit gegeneinander verdreht sind, dass sich zwischen den beiden Nocken 58, 59 normalerweise eine unerwünschte Lücke ergäbe. Diese Lücke wird durch eine entsprechende Nocke 60 auf der Zwischenscheibe 55 gefüllt, so dass sich ein grosser Winkelbereich ergibt, in dem das nicht gezeigte Steuerorgan auf einem gegenüber dem Grundkreis vergrösserten Durchmesser läuft.It can be seen from this figure that the identically designed cam disks 48, 49 are rotated relative to one another to such an extent that there would normally be an undesirable gap between the two cams 58, 59. This gap is filled by a corresponding cam 60 on the intermediate disk 55, so that there is a large angular range in which the control element, not shown, runs on a larger diameter than the base circle.

Damit die Zwischenscheibe 56 auch genau in diese Lücke bewegt wird, sind in den beiden Kurvenscheiben 48, 49 die schon erwähnten Langlöcher 61, 62 vorgesehen, die über den Mitnehmerstift 57 die Bewegungsfreiheit der Zwischenscheibe 56 entsprechend einengen. In der gezeigten, am weitesten gegeneinander verdrehten Stellung der Kurvenscheiben 48, 49 wird dieser Mitnehmerstift 57 von den entgegengesetzten Enden der Langlöcher 61, 62 eingerahmt.So that the intermediate disk 56 is also moved precisely into this gap, 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. In the position of the cam disks 48, 49 shown in the most twisted position, this driver pin 57 is framed by the opposite ends of the elongated holes 61, 62.

Die Figur 2 zeigt desweiteren, dass die beiden Stirnzahnräder 19, 20 zur Verstellung der Kurvenscheiben 48, 49 mit den beiden Verstellritzeln 29, 30 in Eingriff stehen, die auf der Verstellwelle 31 über Wälzlager 63 gelagert sind. Beim Betrieb der Umformpresse drehen sie sich demnach mit den Kurvenscheiben 48, 49 bzw. deren Stirnzahnrädern 19, 20 mit. Für den Verstellvorgang, bei dem die Steuerwelle 5 still steht, können die Verstellritzel 29, 30 jeweils unabhängig voneinander über die Zahnkupplungen 40, 41 mit der Verstellwelle 31 gekuppelt werden. Wird nur die eine der zwei für den Kurvenscheibensatz 10 bestimmten Zahnkupplung 40, 41 angesteuert, so wird auch nur die eine Kurvenscheibe 48, 49 gegenüber der Steuerwelle 5 verdreht, so dass sich die Nockenflanke verbreitert. Werden dagegen beide Zahnkupplungen 40, 41 gleichzeitig angesteuert, so tritt lediglich eine Winkelverschiebung ohne Änderung der Nockenform ein.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. For the adjustment process in which the control shaft 5 is stationary, 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.

Die in Figur 1 weiter noch dargestellten Kurvenscheibensätze 6, 7, 8, 9 sind genauso ausgebildet wie der in Figur 2 näher dargestellte Kurvenscheibensatz 10.The 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.

Claims (10)

1. Metal-shaping press, in particular a multistage press, with a control-cam device (1) for actuating, for example, gripping tongs for transporting a workpiece from one stage to the next, or from a shearing station to a pressing stage, or for actuating the ejector pin of an ejector device, or for actuating a shearing blade, the control-cam device (1) possessing a camshaft (5) carrying at least one cam disc (48, 49) which can be connected to it by means of a clamping arrangement (53), an actuating element running or rolling on this cam disc (48, 49) characterised in that the clamping arrangement (53) can be actuated by subjecting it to the action of a pressure medium, and in that, for the purpose of twisting the cam disc, or discs (48, 49), relative to the camshaft (5), a coupling device is provided, comprising, in each case, a gearwheel (11 to 20), which is fastened to the cam disc (48, 49), and an adjusting pinion (21 to 30) which meshes with this gearwheel (11 to 20) and which can be coupled to an adjusting shaft (31), driven by an adjusting motor (46).
2. Metal-shaping press according to Claim 1, characterised in that at least one set (6 to 10) of cam discs is fitted to the camshaft (5), the two cam discs (48, 49) forming each set (6 to 10) being located side-by-side, close to one another, but being capable of being twisted relative to one another, while a separate coupling device is assigned to each of them.
3. Metal-shaping press according to Claim 2, characterised in that a plurality of cam-disc sets (6 to 10) are fitted to the camshaft (5).
4. Metal-shaping press according to Claim 2 or 3, characterised in that a spacer disc (56) is mounted, in each case, between the two cam discs (48, 49) which are arranged side-by-side, this spacer disc (56) possessing a driving pin (57) which engages into elongated holes (61,62) in the two cam discs (48, 49).
5. Metal-shaping press according to one of Claims 1 to 4, characterised in that each adjusting pinion (21 to 30) can be coupled to the adjusting shaft (31) by means of a denture clutch (32 to 41) which can be shifted magnetically.
6. Metal-shaping press according to one of Claims 1 to 5, characterised in that all the adjusting pinions (21 to 30) are installed, side-by-side, on one adjusting shaft (31) which is driven by an adjusting motor (46).
7. Metal-shaping press according to one of Claims 1 to 6, characterised in that the clamping arrangement is designed as a hydraulic collet-clamp (53).
8. Metal-shaping press according to Claim 7, characterised in that a collet-clamp (53) is provided for each cam disc (48, 49) or, if appropriate, for each cam-disc set (6 to 10).
9. Metal-shaping press according to one of Claim 1 to 8, characterised in that the adjusting motor is designed as a servo motor (46).
10. Metal-shaping press according to Claim 9, characterised in that the servo motor (46) is combined with an incremental transmitter (47).
EP80100237A 1980-01-18 1980-01-18 Transforming-press with a cam device Expired EP0032518B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8080100237T DE3066531D1 (en) 1980-01-18 1980-01-18 Transforming-press with a cam device
AT80100237T ATE6214T1 (en) 1980-01-18 1980-01-18 FORMING PRESS WITH A CAM DEVICE.
EP80100237A EP0032518B1 (en) 1980-01-18 1980-01-18 Transforming-press with a cam device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80100237A EP0032518B1 (en) 1980-01-18 1980-01-18 Transforming-press with a cam device

Publications (2)

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EP0032518A1 EP0032518A1 (en) 1981-07-29
EP0032518B1 true EP0032518B1 (en) 1984-02-15

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EP80100237A Expired EP0032518B1 (en) 1980-01-18 1980-01-18 Transforming-press with a cam device

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EP (1) EP0032518B1 (en)
AT (1) ATE6214T1 (en)
DE (1) DE3066531D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT209421Z2 (en) * 1986-12-31 1988-10-05 Garlaschi Eufemia DEVICE FOR THE QUICK REPLACEMENT OF CAMS IN A PRESS FOR THE PRODUCTION OF RIVETS AND SIMILAR.
EP1138414A1 (en) * 2000-04-01 2001-10-04 Schumag Aktiengesellschaft Arrangement of camshaft and camfollower, transport unit, multistage-press and method for adjusting the cam profile of a camshaft
CN103192009B (en) * 2013-03-13 2016-08-17 上海明隽电子有限公司 Adjustable heading machine is ramed cam
KR102346475B1 (en) * 2021-08-26 2022-01-03 효동기계공업(주) Apparatus for automatic control cam

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 (en) * 1975-11-04 1981-04-02 Malmedie & Co Maschinenfabrik GmbH, 4000 Düsseldorf Cross transport device on a multi-stage press

Also Published As

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

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