EP0308432A1 - Echangeur de palettes sur une machine d'etincelage - Google Patents

Echangeur de palettes sur une machine d'etincelage

Info

Publication number
EP0308432A1
EP0308432A1 EP19880901011 EP88901011A EP0308432A1 EP 0308432 A1 EP0308432 A1 EP 0308432A1 EP 19880901011 EP19880901011 EP 19880901011 EP 88901011 A EP88901011 A EP 88901011A EP 0308432 A1 EP0308432 A1 EP 0308432A1
Authority
EP
European Patent Office
Prior art keywords
pallet
drive
machine
pallets
scissor
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.)
Withdrawn
Application number
EP19880901011
Other languages
German (de)
English (en)
Inventor
Arno Sieg
Christoph Bäumli
Hans-Ulrich Fenner
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.)
Reishauer AG
Original Assignee
Reishauer AG
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 Reishauer AG filed Critical Reishauer AG
Publication of EP0308432A1 publication Critical patent/EP0308432A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H11/00—Auxiliary apparatus or details, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/14—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting co-ordinated in production lines
    • B23Q7/1426—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting co-ordinated in production lines with work holders not rigidly fixed to the transport devices
    • B23Q7/1431—Work holder changers

Definitions

  • the invention relates to a device for loading and unloading a spark erosion machine with workpiece and / or tool pallets, according to the preamble of claim 1.
  • Spark erosion machines in particular those in automatic production lines, are often loaded with the aid of pallets on which the workpieces to be machined or also interchangeable tools are fed to the machine and removed again after machining, for reasons of a rational manufacturing process.
  • the workpieces can be prepared outside the machine and aligned for processing on the machine.
  • the pallet is then placed with the assembled workpiece on the machine table set up for it and locked with it.
  • the machine time can be optimally used, in particular if the device is operated in connection with a numerical production control which automatically controls the work processes on the machine and the feeding and removal of the pallets.
  • a metal-working machine tool with a pallet changing device is known, which is provided with rail-like guide elements.
  • the guide rails interact with transfer and guide means, horizontal transfer of the pallets from the feed device to the machine tool being provided by moving the pallet from one rail guide to the other.
  • Chain drives are generally used as drives for moving the pallets, but these are not very suitable for larger machine tools and for high-precision guidance of the pallets. Chain drives tend in particular to jerk movements, which are not well tolerated by the high-precision spark erosion machines and their controls. Furthermore, chain drives are maintenance-intensive, after all, they are difficult to integrate with spark-erosion machines, since the machining area of these machines must be easily accessible and should be kept largely free of attachments. Chain drives, which would have to reach into the work area, would interfere with this important requirement. In addition, the dielectric used in spark erosion is fat-dissolving. A chain drive with a high fat requirement is incompatible with such a solvent.
  • the advantage of this measure lies in an exceptionally compact changing device for pallets, which does not protrude anywhere on the machine and which keeps the working area free without any restrictions.
  • the drive is less susceptible to faults because of the small number of moving parts than for chain drives.
  • pallets on extremely wide machine tables can also be moved reliably and precisely, especially since the scissors are moved at a constant speed due to their unusual drive, in contrast to conventional scissor drives.
  • FIG. 1 shows the schematic plan view of a spark erosion system with a laterally attached pallet station and with a pallet changer
  • Fig. 2 is the supervision of a drive for the pallet changer
  • FIG. 3 shows the side view of the drive according to FIG. 2.
  • Fig. 1 shows the top view of a spark erosion machine with the associated auxiliary and auxiliary units.
  • a dielectric unit 2 In addition to the spark erosion machine 1, a dielectric unit 2, a cooling device 3, a generator 4 and a machine control 5 are provided.
  • Individual machine components of the erosion machine which are known per se, are not discussed in more detail here.
  • the system parts are installed in such a way that an operating area A remains free and the unhindered access to the machining part of the machine is ensured in terms of user friendliness.
  • a pallet station 6 On one side of the erosion machine 1 there is a pallet station 6 with a plurality of pallets 9 in the area of the table 12 of the machine. Integrated in this pallet station 6 is a pallet changer 30 for transferring the pallets to the erosion machine.
  • the pallet changer 30 is provided with a drive 7. The arrangement of the pallet station 6 and the pallet changer 30 on the lateral area of the erosion machine 1 ensures free access to the work area A.
  • the pallet station 6 consists of a rail guide 21, 22 on which a plurality of pallet receivers 10 A, 10 B, -10 C are movably attached.
  • the carriage-like pallet receivers are guided on the rail guide 21, 22 with suitable means, for example with the aid of rollers.
  • the pallet receivers are integral components of the pallet station 6.
  • the pallet receivers 10 are provided with mounting elements 11 which interact with corresponding elements on the underside of the pallets 9, which are not shown in detail here.
  • the pallet pickups 10 A, 10 B, 10 C can be moved in the direction Y 1 or Y 2 along the rail guide 21, 22.
  • This loading device can be displaced in the direction X 1 or X 2, X 1 or X 2 extending transversely, preferably at right angles to the direction Y 1 or Y 2.
  • the shift can be numerically controlled, the start and end positions being programmable.
  • the changer 30 is provided with a pallet coupling 31, which has a gripper with a roller 32 at the tip. With this device, the individual pallets 9 can be non-positively coupled to the changer 30. Due to the action of the drive element 7, which is described in more detail below with reference to FIGS. 2 to 3, the pallets 9 are pushed onto the machine table 12 or are pulled away from the machine table after processing.
  • the pallet coupling 32 of the changer 30 engages the pallet 9.
  • the pallet 9 is pushed onto the machine table 12 in the direction XI and lowered there, so that the coupling 32 is automatically released from the drive 7.
  • the drive is then moved back to the pallet station, so that the work area A is unaffected by drive means and thus remains freely accessible.
  • the pallet 9 is placed on the table 12 of the spark erosion machine 1 with the aid of the mentioned placement and centering devices, which are located on its underside, in a precise and defined manner and then locked.
  • the drive device 7 according to FIGS. 2 to 3 consists of a linear motor, e.g. a Hubzyli ⁇ - 40, which is fixed in a housing 41.
  • the housing is connected to the changing device 6 according to FIG. 1.
  • a piston rod 42 of the lifting cylinder has transverse guide rails 43 which are connected to guide rods 44 and 45 running parallel to the piston rod 42. These guide rods 44, 45 are guided axially displaceably in the housing 41 with the aid of bearings 46 and 47.
  • a scissor element 50 is attached to the guide rails 43.
  • the uppermost link 100 of the scissor element is articulated with its inner leg by means of a bolt 101 to parts of the housing 41.
  • the outer end of the shear member 100 is slidably mounted in the transverse guide 43 via a guide sleeve 102 and a second bolt 103.
  • the outer leg of a further scissor member 110 is also mounted, the inner leg of which with a middle bolt, not shown in the figure is rotatably attached to the next scissor link.
  • the middle pin 145 connects the inner leg of the lower scissor link 140 to the pallet coupling 31 and the roller 32, which is used for the force-locking coupling with the pallet 9.
  • the scissors 50 translate the maximum stroke H1 of the linear motor 40 to the maximum extension stroke H2, which corresponds to the outermost pallet position that still has to be reached on the machine table 12.
  • H2 can be much larger than St.
  • the lifting cylinder 40 When the lifting cylinder 40 is actuated to extend a pallet 9 onto the table 12 of the spark erosion machine 1, the lifting cylinder 40 is pressurized with a pressure medium, for example with hydraulic or pneumatic fluid, so that the piston rod 42 and with it the guide rails 43 according to the right Move part of Figure 2 down.
  • a pressure medium for example with hydraulic or pneumatic fluid
  • Suitable elements can also be used as the lifting drive 40. Suitable are e.g. motor-driven spindle drives or electric linear motors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Workpieces (AREA)

Abstract

Un dispositif pour charger et décharger une machine d'étincelage avec des palettes de pièces et/ou d'outils possède un poste de palettes agencé à proximité de la machine. Un échangeur de palettes associé au poste de palettes en vue du transfert régulé de ces dernières entre le poste de palettes et la machine est également prévu. L'échangeur de palettes comporte un entraînement articulé en ciseaux (50) extensible dans le sens de transfert et conçu pour assurer la translation linéaire du mouvement d'un vérin hydraulique (40). Les éléments extérieurs (110) de l'entraînement articulé sont en communication côté entraînement avec le vérin hydraulique (40), tandis que les éléments intérieurs dudit entraînement articulé sont fixes (101). Du côté mené (146) de l'entraînement articulé (50), des moyens d'accouplement amovibles (31, 32) sont prévus pour assurer la communication par liaison de force avec les palettes (9). L'agencement garantit une vitesse de déplaçement constante sur toute la longueur de la course, ce qui est particulièrement avantageux dans le cas de palettes très lourdes.
EP19880901011 1987-01-31 1988-02-01 Echangeur de palettes sur une machine d'etincelage Withdrawn EP0308432A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH34987 1987-01-31
CH349/87 1987-01-31

Publications (1)

Publication Number Publication Date
EP0308432A1 true EP0308432A1 (fr) 1989-03-29

Family

ID=4184992

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19880901011 Withdrawn EP0308432A1 (fr) 1987-01-31 1988-02-01 Echangeur de palettes sur une machine d'etincelage
EP88810056A Withdrawn EP0289453A1 (fr) 1987-01-31 1988-02-01 Changeur de palette pour machine d'électro-érosion

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88810056A Withdrawn EP0289453A1 (fr) 1987-01-31 1988-02-01 Changeur de palette pour machine d'électro-érosion

Country Status (2)

Country Link
EP (2) EP0308432A1 (fr)
WO (1) WO1988005710A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1236790B (it) * 1989-11-15 1993-04-02 Salvagnini Transferica Spa Ora Impianto di lavorazione di pezzi su pallet mediante macchina utensile con un unico dispositivo per il trasferimento dei pallet tra una stazione di lavoro e un'adiacente stazione di carico/scarico dei pallet.
DE102011010152A1 (de) * 2011-02-02 2012-08-02 Grob-Werke Gmbh & Co. Kg Zuführ- und Ladeeinheit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240962C2 (de) * 1982-11-05 1989-06-29 Toshiba Kikai K.K., Tokio/Tokyo Palettenwechselvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8805710A1 *

Also Published As

Publication number Publication date
WO1988005710A1 (fr) 1988-08-11
EP0289453A1 (fr) 1988-11-02

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