EP0032518A1 - Transforming-press with a cam device - Google Patents

Transforming-press with a cam device Download PDF

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Publication number
EP0032518A1
EP0032518A1 EP80100237A EP80100237A EP0032518A1 EP 0032518 A1 EP0032518 A1 EP 0032518A1 EP 80100237 A EP80100237 A EP 80100237A EP 80100237 A EP80100237 A EP 80100237A EP 0032518 A1 EP0032518 A1 EP 0032518A1
Authority
EP
European Patent Office
Prior art keywords
cam
forming press
adjusting
press according
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80100237A
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German (de)
French (fr)
Other versions
EP0032518B1 (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
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/en
Priority to DE8080100237T priority patent/DE3066531D1/en
Priority to AT80100237T priority patent/ATE6214T1/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 transporting a workpiece from one step to the next or from a shear station to the press step, for actuating a shear knife or the ejector pin of an ejector device
  • the control cam device has a control shaft with at least one cam plate releasably attached to it, on which an actuator runs or rolls.
  • Forming presses in particular multi-stage presses, usually have a series of gripper tongs for the transport of the workpiece from one stage to the next or from the shear station to the first 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 cams can be rotated relative to the control shaft after loosening fasteners and thus the movement of the gripper tongs can 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 for bridging 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 pin.
  • the turning of the cam disks relative to the control shaft and against each other must be done manually in the previously known forming presses after loosening one Series of fasteners happen. 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 task of simplifying and shortening the adjustment process with respect to the cam disks.
  • the cam disc (s) can be connected to the control shaft via a clamping device which can be acted upon by a pressure medium, and can be coupled via a coupling device with at least one adjusting motor for rotating the cam disc (s) relative to the control shaft.
  • the cam disks can be rotated relative 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.
  • At least one cam disk set each with two cam disks which are close together but can be rotated relative to one another, is arranged on the control shaft, each of the two cam disks being connectable to the adjusting motor via its own coupling device. In this way, not only can the activation of the respective control member be postponed, but also its duration can be influenced. If necessary, several sets of cams can be arranged on the control shaft.
  • an intermediate disk with a cam segment is arranged, which with a driver pin fits into elongated holes in the two cam disks enlarge further.
  • the coupling device consists of a gear wheel connected to the cam disk and a meshing adjusting pinion which can be coupled to an adjusting shaft driven by the adjusting motor.
  • Each pinion can be connected to the drive shaft via a magnetically switchable tooth coupling.
  • all pinions should sit side by side on a drive 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 adjustment motor is designed as a servomotor, which is expediently combined with an incremental encoder, so that the respective adjustment 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 provided for each of these adjustment 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 disk 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 servomotor 46, the cams can be rotated, the toothed clutches 32 to 41 of which 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 between the two cam disks 48, 49 and is connected to the cam disks 48, 49 only via a further driver pin 57.
  • This - mean same - driver pin 57 each in a circumferential slot, as shown in Figure 3, which shows a side view of the cam 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 are each independently coupled to the adjusting shaft 31 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 relative 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 zur Betätigung von Greiferzangen für den Transport eines Werkstückes von einer Stufe zur nächsten oder von einer Scherstation zur Preßstufe, zur Betätigung eines Schermessers oder des Auswerferbolzens einer Auswerfereinrichtung, wobei die Steuerkurveneinrichtung eine Steuerwelle mit wenigstens einer auf ihr lösbar befestigten 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 transporting a workpiece from one step to the next or from a shear station to the press step, for actuating a shear knife or the ejector pin of an ejector device, the control cam device has a control shaft with at least one cam plate releasably attached to it, on which an actuator runs or rolls.

Umformpressen, insbesondere Mehrstufenpressen, weisen für den Transport des Werkstückes von einer Stufe zur nächsten oder von der Scherstation zur ersten Preßstufe meist eine Reihe von Greiferzangen auf, deren Bewegung über eine Steuerkurveneinrichtung bewirkt wird. Diese Steuerkurveneinrichtung besteht aus einer von der Umformpresse angetriebenen Steuerwelle und einer, meist jedoch mehreren auf dieser Welle befestigten Kurvenscheiben. 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.Forming presses, in particular multi-stage presses, usually have a series of gripper tongs for the transport of the workpiece from one stage to the next or from the shear station to the first 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 cams can be rotated relative to the control shaft after loosening fasteners and thus the movement of the gripper tongs can 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 for bridging 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 pin.

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 manually in the previously known forming presses after loosening one Series of fasteners happen. 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 task of simplifying and shortening the adjustment process with respect to the cam disks.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß die Kurvenscheibe(n) über eine mittels eines Druckmittels beaufschlagbare Klemmeinrichtung mit der Steuerwelle verbindbar und über eine Kupplungseinrichtung mit wenigstens einem Verstellmotor zur Verdrehung der Kurvenscheibe(n) relativ zur Steuerwelle kuppelbar ist bzw. sind. 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 Druckmittel-beaufschlagung der Klemmeinrichtung schnell gelöst oder wieder hergestellt werden kann.This object is achieved according to the invention in that the cam disc (s) can be connected to the control shaft via a clamping device which can be acted upon by a pressure medium, and can be coupled via a coupling device with at least one adjusting motor for rotating the cam disc (s) relative to the control shaft. As a result of this design, the cam disks can be rotated relative 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 stehenden, jedoch gegeneinander verdrehbaren Kurvenscheiben angeordnet sind, wobei jede der beiden Kurvenscheiben über eine eigene Kupplungseinrichtung mit dem Verstellmotor verbindbar ist. Auf diese Weise läßt sich nicht nur die Ansteuerung des jeweiligen Steuerorgans zeitlich verschieben, sondern auch hinsichtlich seiner Dauer beeinflussen. Soweit erforderlich, können mehrere Kurvenscheibensätze auf der Steuerwelle angeordnet sein.In an embodiment of the invention it is provided that at least one cam disk set, each with two cam disks which are close together but can be rotated relative to one another, is arranged on the control shaft, each of the two cam disks being connectable to the adjusting motor via its own coupling device. In this way, not only can the activation of the respective control member be postponed, but also its duration can be influenced. If necessary, several sets of cams can be arranged on the control shaft.

Nach einem weiteren Merkmal der Erfindung ist vorgesehen, daß jeweils zwischen den zwei nebeneinander angeordneten Kurvenscheiben eine Zwischenscheibe mit einem Kurvensegment angeordnet ist, die mit einem Mitnehmerstift in Langlöcher in den beiden Kurvenscheiben einfaßt.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 arranged, which with a driver pin fits into elongated holes in the two cam disks enlarge further.

In weiterer Ausbildung der Erfindung ist vorgesehen, daß die Kupplungseinrichtung aus je einem mit der Kurvenscheibe verbundenen Zahnrad sowie einem mit diesem kämmenden Verstellritzel besteht, das mit einer vom Verstellmotor angetriebenen Verstellwelle kuppelbar ist. Dabei kann jedes Ritzel über eine magnetisch schaltbare Zahnkupplung mit der Antriebswelle verbindbar sein. Vorzugsweise sollten alle Ritzel auf einer Antriebswelle nebeneinander sitzen, die von einem Verstellmotor angetrieben ist, so daß nur dieser eine Motor erforderlich ist.In a further embodiment of the invention it is provided that the coupling device consists of a gear wheel connected to the cam disk and a meshing adjusting pinion which can be coupled to an adjusting shaft driven by the adjusting motor. Each pinion can be connected to the drive shaft via a magnetically switchable tooth coupling. Preferably, all pinions should sit side by side on a drive 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 adjustment motor is designed as a servomotor, which is expediently combined with an incremental encoder, so that the respective adjustment process can be monitored precisely.

In der Zeichnung ist die Erfindung anhand eines Ausführungsbeispieles näher veranschaulicht. 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.
In the drawing, the invention is illustrated in more detail using an exemplary embodiment. Show it:
  • FIG. 1 shows a view of a control cam device of a five-stage press,
  • FIG. 2 shows a cross section through a set of cams of the control cam device according to FIGS. 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 Zahnkupplungen 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 Kurvenscheibe 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. For each of these adjustment pinions 21 to 30 is a magnetically switchable Tooth coupling 32 to 41 provided. 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 disk 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 servomotor 46, the cams can be rotated, the toothed clutches 32 to 41 of which 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.An intermediate disk 56 is arranged between the two cam disks 48, 49 and is connected to the cam disks 48, 49 only via a further driver pin 57. This - mean same - driver pin 57 each in a circumferential slot, as shown in Figure 3, which shows a side view of the cam 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.From this figure it can be seen that the identically designed cam plates 48, 49 are rotated against 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 are each independently coupled to the adjusting shaft 31 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 relative 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 (11)

1. Umformpresse, insbesondere Mehrstufenpresse, mit einer Steuerkurveneinrichtung, beispielsweise zur Betätigung von Greiferzangen für den Transport eines Werkstückes von einer Stufe zur nächsten oder von einer Scherstation zur Preßstufe, zur Betätigung eines Schermessers oder des Auswerferbolzens einer Auswerfereinrichtung, wobei die Steuerkurveneinrichtung eine Steuerwelle mit wenigstens . einer auf ihr lösbar befestigten Kurvenscheibe aufweist, auf der ein Betätigungsorgan abläuft oder abrollt, dadurch gekennzeichnet, daß die Kurvenscheibe(n) (48, 49) über eine mittels eines Druckmittels beaufschlagbare Klemmeinrichtung (53) mit der Steuerwelle (5) verbindbar und über eine Kupplungseinrichtung mit wenigstens einem Verstellmotor (46) zur Verdrehung der Kurvenscheibe(n) (48, 49) relativ zur Steuerwelle (5) kuppelbar ist bzw. sind.1.forming press, in particular multi-stage press, with a control cam device, for example for actuating gripper tongs for transporting a workpiece from one step to the next or from a shear station to the press step, for actuating a shear knife or the ejector pin of an ejector device, the control cam device having a control shaft with at least . has a cam disc releasably attached to it, on which an actuating element runs or rolls, characterized in that the cam disc (s) (48, 49) can be connected to the control shaft (5) via a clamping device (53) which can be acted upon by a pressure medium and via a Coupling device with at least one adjusting motor (46) for rotating the cam disc (s) (48, 49) relative to the control shaft (5) is or can be coupled. 2. Umformpresse nach Anspruch 1, dadurch gekennzeichnet, daß auf der Steuerwelle (5) wenigstens ein Kurvenscheibensatz (6 bis 10) mit jeweils zwei dicht nebeneinander stehenden, jedoch gegeneinander verdrehbaren Kurvenscheiben (48, 49) angeordnet sind, wobei jeder der beiden Kurvenscheiben (48, 49) über eine eigene Kupplungseinrichtung mit dem Verstellmotor (46) verbindbar ist.2. Forming press according to claim 1, characterized in that on the control shaft (5) at least one set of cams (6 to 10), each with two closely spaced but mutually rotatable cams (48, 49) are arranged, each of the two cams ( 48, 49) can be connected to the adjusting motor (46) via its own coupling device. 3. Umformpresse nach Anspruch 2, dadurch gekennzeichnet, daß mehrere Kurvenscheibensätze (6 bis 10) auf der Steuerwelle (5) angeordnet sind.3. Forming press according to claim 2, characterized in that a plurality of sets of cams (6 to 10) are arranged on the control shaft (5). 4. Umformpresse nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß jeweils zwischen den zwei nebeneinander angeordneten Kurvenscheiben (48, 49) eine Zwischenscheibe (56) angeordnet ist, die mit einem Mitnehmerstift (57) in Langlöcher (61, 62) in den beiden Kurvenscheiben (48, 49) einfaßt.4. Forming press according to claim 2 or 3, characterized in that between the two cams (48, 49) arranged next to each other, an intermediate plate (56) is arranged, which with a driver pin (57) in elongated holes (61, 62) in the two Cam discs (48, 49) surrounds. 5. Umformpresse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Kupplungseinrichtung aus je einem mit der Kurvenscheibe (48, 49) verbundenen Zahnrad (11 bis 20) sowie einem mit diesem kämmenden Verstellritzel (21 bis 30) besteht, das mit einer vom Verstellmotor (46) angetriebenen Verstellwelle (31) kuppelbar ist.5. Forming press according to one of claims 1 to 4, characterized in that the coupling device consists of a respective with the cam (48, 49) connected gear (11 to 20) and a meshing with this adjusting pinion (21 to 30), which with an adjustment shaft (31) driven by the adjustment motor (46) can be coupled. 6. Umformpresse nach Anspruch 5, dadurch gekennzeichnet, daß jedes Verstellritzel (21 bis 30) über eine magnetisch schaltbare Zahnkupplung (32 bis 41) mit der Verstellwelle (31) verbindbar ist.6. Forming press according to claim 5, characterized in that each adjusting pinion (21 to 30) via a magnetically switchable tooth coupling (32 to 41) can be connected to the adjusting shaft (31). 7. Umformpresse nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß alle Verstellritzel (21 bis 30) auf einer Verstellwelle (31) nebeneinander sitzen, die von einem Verstellmotor (46) angetrieben ist.7. Forming press according to claim 5 or 6, characterized in that all adjusting pinions (21 to 30) sit side by side on an adjusting shaft (31) which is driven by an adjusting motor (46). 8. Umformpresse nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Klemmeinrichtung als eine hydraulische Klemmhülse (53) ausgebildet ist.8. Forming press according to one of claims 1 to 7, characterized in that the clamping device is designed as a hydraulic clamping sleeve (53). 9. Umformpresse nach Anspruch 8, dadurch gekennzeichnet, daß für jede Kurvenscheibe (48, 49) bzw. jeden Kurvenscheibensatz (6 bis 10) eine Klemmhülse (53) vorgesehen ist.9. forming press according to claim 8, characterized in that for each cam (48, 49) or each cam disc set (6 to 10) a clamping sleeve (53) is provided. 10. Umformpresse nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Verstellmotor als Stellmotor (46) ausgebildet ist.10. Forming press according to one of claims 1 to 9, characterized in that the adjusting motor is designed as a servomotor (46). 11. Umformpresse nach Anspruch 10, dadurch gekennzeichnet, daß der Stellmotor (46) mit einem Inkrementalgeber (47) kombiniert ist.11. Forming press according to claim 10, characterized in that the servomotor (46) is combined with an incremental encoder (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
EP80100237A EP0032518B1 (en) 1980-01-18 1980-01-18 Transforming-press with a cam device
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.

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 true EP0032518A1 (en) 1981-07-29
EP0032518B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608949A1 (en) * 1986-12-31 1988-07-01 Garlaschi Eufemia DEVICE FOR RAPID CAM CHANGE IN A PRESS FOR THE PRODUCTION OF RIVETS AND THE LIKE
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
CN103192009A (en) * 2013-03-13 2013-07-10 上海明隽电子有限公司 Adjustable ram cam of heading machine
KR102346475B1 (en) * 2021-08-26 2022-01-03 효동기계공업(주) Apparatus for automatic control cam

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236913B (en) * 1961-08-29 1967-03-16 Nat Machinery Co Cross conveyor device on multi-stage presses
DE2131759A1 (en) * 1970-06-26 1971-12-30 Nat Machinery Co Transport device for a cross transport press
DE2549319A1 (en) * 1975-11-04 1977-05-12 Malmedie & Co Maschf CROSS TRANSPORT DEVICE ON A MULTI-STAGE PRESS
DE2039697B2 (en) * 1969-08-15 1979-07-19 Aerpat Ag, Zug (Schweiz) Multi-stage molding machine, especially multi-stage press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1236913B (en) * 1961-08-29 1967-03-16 Nat Machinery Co Cross conveyor device on multi-stage presses
DE2039697B2 (en) * 1969-08-15 1979-07-19 Aerpat Ag, Zug (Schweiz) Multi-stage molding machine, especially multi-stage press
DE2131759A1 (en) * 1970-06-26 1971-12-30 Nat Machinery Co Transport device for a cross transport press
DE2549319A1 (en) * 1975-11-04 1977-05-12 Malmedie & Co Maschf CROSS TRANSPORT DEVICE ON A MULTI-STAGE PRESS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2608949A1 (en) * 1986-12-31 1988-07-01 Garlaschi Eufemia DEVICE FOR RAPID CAM CHANGE IN A PRESS FOR THE PRODUCTION OF RIVETS AND THE LIKE
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
CN103192009A (en) * 2013-03-13 2013-07-10 上海明隽电子有限公司 Adjustable ram cam of heading machine
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

Also Published As

Publication number Publication date
ATE6214T1 (en) 1984-03-15
DE3066531D1 (en) 1984-03-22
EP0032518B1 (en) 1984-02-15

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