WO2000027583A1 - Dispositif de changement d'outil - Google Patents

Dispositif de changement d'outil

Info

Publication number
WO2000027583A1
WO2000027583A1 PCT/EP1999/006574 EP9906574W WO0027583A1 WO 2000027583 A1 WO2000027583 A1 WO 2000027583A1 EP 9906574 W EP9906574 W EP 9906574W WO 0027583 A1 WO0027583 A1 WO 0027583A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
main memory
tool changing
changing device
machining tools
Prior art date
Application number
PCT/EP1999/006574
Other languages
German (de)
English (en)
Inventor
Johann-Ludwig Strobel
Wolfgang Wieland
Original Assignee
Alfing Kessler Sondermaschinen 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 Alfing Kessler Sondermaschinen Gmbh filed Critical Alfing Kessler Sondermaschinen Gmbh
Priority to EP99947281A priority Critical patent/EP1126947A1/fr
Publication of WO2000027583A1 publication Critical patent/WO2000027583A1/fr

Links

Classifications

    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/15526—Storage devices; Drive mechanisms therefor
    • B23Q3/15539—Plural magazines, e.g. involving tool transfer from one magazine to another
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/157—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools
    • B23Q3/15773—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling of rotary tools a transfer device taking the tool from a storage device and passing it on to other transfer devices, which insert it in a spindle
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/15526—Storage devices; Drive mechanisms therefor
    • B23Q2003/15537—Linearly moving storage devices
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
    • B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
    • B23Q3/1554—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore
    • B23Q2003/155404—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising a single gripper
    • B23Q2003/155407—Transfer mechanisms, e.g. tool gripping arms; Drive mechanisms therefore the transfer mechanism comprising a single gripper linearly movable

Definitions

  • the present invention relates to a tool changing device, in particular for single or multi-spindle machine tools, their spindles
  • the present invention relates to a method for carrying out a tool change in NC-controlled machining centers with one or more spindles.
  • DE 39 01 838 C3 discloses a machining cell of a two-spindle machine tool that has two rotatable tool changers that are driven by a motor. These tool changers each comprise two arms with attached couplings for receiving machining tools. To change a machining tool, one of the arms of the tool changer picks up a machining tool from a tool magazine, which is to be exchanged in a spindle of the machining center. By rotating the tool changer, the second empty arm of the tool changer is positioned so that the tool located in the spindle of the machining center can be taken over by the receiving coupling of the empty arm.
  • the arm with the machining tool to be replaced is positioned so that the new machining tool can be picked up by the spindle of the machining center.
  • the old machining tool is fed to the tool magazine and, after a further rotation of the tool changer, the tool that is next required for machining the workpiece can be picked up from the tool magazine by an arm of the tool changer.
  • a machining center with one or two tool spindles is known from the prospectus of Fritz Werner Deutschenberichtmaschinen AG, Berlin, 1712 D 4000 9/93 HH "Series-TCF", which has a tool changing device that transports machining tools between a magazine and the spindles.
  • This tool changing device has two arms, each of which can hold a machining tool.
  • a processing tool with changer pliers is first removed from the magazine and transported to a ready position. Then the tool changer and the machine stand move towards each other, with a free changer pliers picking up the old tool from the spindle of the machining center. By rotating the tool changer about its axis of rotation, the new machining tool is inserted into the spindle. The tool changer and the machine stand now move away from each other again and the old machining tool is placed in the magazine by the tool changer.
  • a tool changer according to the prior art can only deliver one machining tool to a spindle or can hold one machining tool at a time.
  • the tool changing devices known from the prior art have a complicated structure in which, in some cases, time-consuming rotary and displacement movements for a tool change have to be coordinated with one another. Due to the complicated structure, the maintenance and manufacturing costs for such tool changing devices are disproportionately high.
  • the invention is based on the technical problem of providing a tool changing device for single- or multi-spindle machine tools, which has a simplified structure and is therefore inexpensive to manufacture, and enables a quick and precise tool change.
  • a method for changing machining tools is to be provided, which further reduces the time required for the tool change.
  • a tool changing device has a main store, a transfer device and an intermediate store, which has a transfer position for the tool transfer between the intermediate store and a spindle of the machine tool.
  • the buffer store can hold at least two machining tools per spindle, while the main memory is designed to hold a large number of machining tools.
  • the invention is based on the idea that a tool change takes place particularly quickly when the machining tool and the spindle of the machining center only minimal distances have to be moved for the tool change. Therefore, an empty holding device and a holding device with the machining tool to be changed are present in the buffer of the tool changing device.
  • the empty holding device and the holding device with the new machining tool are preferably arranged next to one another, so that the path that the holding devices have to cover for a tool change is minimized.
  • the spindle is moved to the transfer position of the intermediate store, in which an empty holding device is already located. For example, the old processing tool can then be transferred to the empty pick-up device in the pickup method.
  • the spindle is now withdrawn by a small defined amount, so that the holding devices can be moved in the intermediate store without the risk of a collision with the spindle.
  • the pick-up device with the processing tool required for the next processing step is now shifted from a supply position next to the transfer position into the transfer position, whereby the pick-up device with the old processing tool is simultaneously moved in a supply position.
  • the spindle of the machine tool then travels again in the direction of the transfer position of the intermediate store and picks up the new machining tool there using the pickup method.
  • a transport device can move the holding devices in the main memory in such a way that either a new machining tool is moved into a position in which the transfer device move the new processing tool into the buffer can, or that an old processing tool can be sorted from the buffer from the transfer device into the main memory.
  • the transfer device inserts a placeholder at the location in the main memory from which a processing tool is moved into the intermediate memory, which placeholder essentially has the width of a receiving device and how it can be moved in the main memory.
  • a processing tool with a pick-up device is moved from the intermediate storage via the transfer device into the main memory, the placeholder is removed from the main memory and at the same time the pick-up device with the processing tool is sorted into the place of the placeholder.
  • the time required for the tool changing process can be reduced to a minimum and it is ensured that even when a processing tool is used for a short time, i.e. a short main time, there is always an empty holding device for holding the old working tool and a holding device with the new one Processing tool is available in the buffer.
  • the main memory is designed as an oval rail-shaped path.
  • This rail-shaped path is interrupted at one point per spindle of the machine tool.
  • the width of this opening in the rail of the main memory preferably corresponds to the width of a receiving device.
  • the intermediate store is also designed as a rail-shaped path.
  • the rail of the buffer store also has an interruption per spindle of the machine tool, which has exactly the same width as the opening of the rail of the main store.
  • the rail of the main memory is preferably designed as a flat, straight rail, at least in the region which has the interruptions.
  • the cache is also as one rectilinear rail formed which is parallel to this rectilinear rail section of the main memory. The openings of the rail of the main storage and the intermediate storage are aligned with each other.
  • the transfer device is preferably arranged essentially perpendicular to the straight rail section of the main store and the rail of the intermediate store.
  • a transfer device according to the invention generally consists of a mounting frame with a linear drive, preferably in the form of a piston-cylinder arrangement, and two rail pieces which are fixedly connected to the drive in order to be displaceable by the drive.
  • the distance between the two rail sections is fixed and corresponds exactly to the distance between the rail of the intermediate store and the parallel rail section of the main store.
  • the width of the two rail pieces of the transfer device corresponds exactly to the width of the openings in the rails of the main memory and the intermediate store, that is to say essentially the width of a measuring device for processing tools.
  • the opening or gap in the rail of the intermediate store remains open, while the second rail section of the transfer device preferably carries a placeholder and is not connected to the rail of the main store or to that of the intermediate store .
  • the openings in the rails of the Main memory and the intermediate store closed by moving the rail piece, which had been in the opening of the main store, into the opening of the intermediate store and moving the rail piece with the placeholder into the opening of the main store.
  • the holding devices in the intermediate store can be moved over the entire length of the rail of the intermediate store;
  • the recording devices and placeholders in the main memory can be moved as desired.
  • the piston-cylinder arrangement of the transfer device is preferably operated via a hydraulic or pneumatic system. According to the requirements of the transfer device, other drive concepts can also be realized, for example, racks or other drives.
  • receiving devices can be transported quickly and precisely between the intermediate store and the main store, while at the same time a placeholder can be inserted into the main store when a receiving device is moved with a processing tool from the main store into the intermediate store. If a tool is transported back from the buffer into the main memory, it can be re-arranged exactly in the main memory at the location at which the pick-up device with the processing tool was arranged prior to processing, and which is identified by the placeholder, which at the same time from the Main memory is removed.
  • At least one further cylinder is present on the intermediate storage device, the piston of which can move one or more holding devices simultaneously.
  • the masses to be accelerated have thus been minimized, as a result of which the shifting process within the intermediate store takes place quickly and with little energy expenditure and in particular over the shortest route.
  • the receiving devices in the intermediate store are preferably moved linearly by the cylinder piston, which is driven, for example, hydraulically or pneumatically. This type of drive is particularly low-maintenance and is characterized by high reliability.
  • the receiving devices can also be driven via another linear drive, for example via a toothed rack.
  • a tool changing device can provide the machining tool required for the next machining step during the main time, ie while the spindle is in the machining process.
  • a time-consuming tool search during the tool change is therefore no longer necessary. Since an empty pick-up device is always arranged in the buffer next to the pick-up device with the processing tool required for the subsequent processing step, the pick-up devices only have to be moved a minimal distance after the old processing tool has been placed in a pick-up device by the spindle and before the new processing tool is removed from the Spindle is added. The so-called idle time required for the tool change is thus considerably reduced. Since the recording devices with the processing tools are moved into or out of the main memory during the main time, a longer sorting process in the main memory can be accepted.
  • machining tools in groups or in a specific order system in the main memory, which, for example, facilitate the maintenance, control or exchange of tool groups.
  • the simple structure of a tool changing device according to the embodiment described above enables particularly cost-effective production.
  • the individual components are simple; they are therefore easy to maintain and less prone to failure. This also reduces the maintenance and operating costs for the tool changing device.
  • the holding devices which carry the processing tools are preferably cassettes with gripping tongs which can pick up or deliver processing tools precisely using the pickup method.
  • a spindle is to transfer a processing tool to a pick-up device that is not exactly in the transfer position in the pick-up process
  • the pick-up device can be moved into the exact transfer position via the processing tool engaging in the gripping pliers.
  • only a few receptacles, preferably only two receptacles, are moved in the buffer, which is possible without too much effort. If a holding device is not exactly positioned in a chain magazine, the entire chain magazine would have to be moved with considerable effort.
  • the main store is arranged as a lying oval rail track above the intermediate store, which in turn is positioned above the spindles of the machine tool.
  • This structure enables the width of a machining center to be significantly reduced, especially in confined spaces.
  • the main memory can also be arranged laterally next to the intermediate memory, which in turn can be arranged laterally next to the spindles of the machine tool.
  • the design of the buffer is not limited to a straight rail, but other shapes, such as, for example, a curved design of the rail of the buffer, can also be selected according to the requirements of the buffer.
  • the main memory is also not limited to the essentially oval design of the railroad. Any shape for the main memory can be selected according to the respective requirements. If the transfer device is designed accordingly, it is also possible not to design the main store and / or the intermediate store as a rail-shaped path, but rather, for example, as a chain magazine.
  • an intermediate store and a transfer device are preferably provided for each spindle.
  • the spindles can thus take up machining tools from the intermediate store or store them in the intermediate store independently of one another, and the transfer devices can transport machining tools between the intermediate store and the main store during the main time.
  • transfer devices it is also possible to provide several transfer devices per spindle or per buffer. In this way, the transport of old and new machining tools between the main memory and the buffer can be performed simultaneously and thus even faster.
  • a device is provided on the intermediate storage device which cleans the cone of a new machining tool by blowing or brushing it off before changing into the spindle of the machining center.
  • An arrangement of this cleaning device within the main memory is also possible, but the arrangement on the intermediate store is more favorable due to the limited space in the main store.
  • Figure 1 is a schematic representation of a tool changing device according to the invention for two-spindle machine tools.
  • Fig. 2 is a section along the plane A-A in Fig. 1;
  • Fig. 3 is a section along the plane B-B in Fig. 1;
  • Description of an embodiment of the invention 1 schematically shows a tool changing device 1 according to the invention for a two-spindle machine tool.
  • a tool changing device 1 for a two-spindle machine tool.
  • headstocks 5, 6 are indicated by circles of the machine tool.
  • an empty circle, as in FIG. 1, means a spindle 5, 6 without machining tools. If, as in FIG. 5, two smaller concentric circles are shown in the spindle, there are machining tools in the spindle.
  • a tool changing device 1 essentially consists of a main memory 2, an intermediate storage 3 each and a transfer device 4 per spindle 5, 6 of the machine tool.
  • the main memory 2 is designed as a stationary oval track with a rail 11.
  • the rail 11 is interrupted at two points by openings 12 and 13.
  • the intermediate store 3 is spaced apart from the main store 2 and consists of a rail 14 which is essentially parallel to the main store 2 and which likewise has openings 15, 16 (cf. FIG. 1).
  • the openings 12, 13 of the rail of the main storage and the openings 15, 16 of the intermediate storage are arranged so that the openings 12 and 15 or 13 and 16 are congruent to each other.
  • the rails of the main store and the intermediate store have openings 12, 15 and 13, 16 of the rails, which are each arranged in a line with the transfer devices 4.
  • Transfer device 4 shown which consists essentially of a bracket 20, a cylinder 19 attached thereto and two rail pieces 17, 18.
  • the distance between the rail sections 17 and 18 corresponds to the distance between the main store 2 and the intermediate store 3.
  • the width of the rail sections 17 and 18 corresponds exactly to the width of the openings 12, 13, 15, 16 in the rails of the main store and the intermediate store.
  • the rail sections 17 and 18 can be linearly displaced via the cylinder 19, as indicated by an arrow in FIG. 3.
  • main memory 2 In the main memory 2 are a variety of
  • Receiving devices 8, 10 slidably arranged. These holding devices 8, 10 can hold machining tools III and IV. Also in the intermediate store 3, receiving devices 7, 9 with processing tools I and II attached to them are slidably arranged.
  • the receiving devices in the main memory 2 can be moved via a transport device (not shown).
  • the receiving devices 7, 8, 9, 10, which are, for example, cassettes, have a width which corresponds at most to the width of the rail pieces of the transfer device 4.
  • placeholders 22, 23, 26, 27, the width of which is the same as the width of the receiving devices 7, 8, 9, 10, can be present in the main memory 2 or the transfer device 4.
  • the placeholders 22, 23, 26, 27 are - like the receiving devices - slidably arranged in the main memory.
  • the holding devices in the intermediate store 3 can be moved linearly between different positions.
  • the position perpendicularly above the spindles 5, 6 of the machine tool is referred to in the intermediate store 3 as the transfer position.
  • the remaining positions in the intermediate storage 3 are referred to below as preparation positions.
  • FIG. 1 A complete tool change cycle is now explained in more detail below.
  • the first machining tools I and II are in the holding devices 7 and 9 within the buffer 3 in a transfer position that is defined perpendicularly above the spindles 5 and 6 of the machine tool.
  • the empty spindles 5 and 6 of the machine tool are now moved vertically upwards, as indicated by the arrows, in order to pick up the processing tools I and II in the pickup process, as shown in FIG. 4.
  • the spindles 5 and 6 now move with the processing tools I and 2, as shown by the arrows in FIG. 4, into their working position (FIG. 5), while the empty holding devices 7 and 9 remain in the transfer position.
  • the transfer device 4 is at this time in a position in which the cylinder 19 is retracted, so that the lower rail 18 engages in the opening 12 or 13 of the rail 11 of the main memory.
  • the main memory 2 thus forms a completely closed rail 11, in which receiving devices can be moved as desired via the transport device, not shown.
  • the second machining tools III and IV required for the next machining step can either be moved into a position during the main time, i.e. while the first machining tools I, II are machining a workpiece (not shown), or during the tool change process, the so-called secondary time itself on the lower rail section 18, ie are in the transfer device 4.
  • the cylinder 19 of the transfer device 4 is now extended, as shown in FIG. 6, so that the lower rail section 18 with the receiving devices 8 and 10 thereon and the second machining tools III and IV into the openings 15 and 16 of the rail 14 of the intermediate store 3 engages and the upper rail section 17, on which the placeholders 22 and 23 are arranged, into the openings 12 or 13 of the rail 11 of the main memory engages.
  • the rails 14 and 11 of the intermediate store or the main store are closed, so that the holding devices 7, 8, 9, 10 in the intermediate store can be moved linearly by the cylinder 21.
  • the machining tools III, IV with the holding devices 8, 10 were thus moved from the main memory 2 into the intermediate storage 3 and at the same time the placeholders 22, 23 into the main memory 2 in the place of the holding devices 8, 10.
  • the spindles 5 and 6 move with the first machining tools I, II, as shown in FIG. 7, into the transfer position and transfer the first machining tools I and II to the empty holding devices 7 and 9 after the machining process has been completed using the pickup method 8, the empty spindles 5, 6 are now moved a defined distance downward, so that the holding devices 7, 8, 9, 10 can be moved freely in the intermediate storage 3 without colliding with the empty spindles .
  • the receiving devices 7, 8, 9, 10 are now linearly displaced such that the receiving devices 8 and 10 with the attached second processing tools III, IV are moved into the transfer position for the next processing step.
  • the recording devices 7, 9 with the processing tools I, II of the previous processing step are moved into preparation positions within the intermediate store 3. This state is shown in Fig. 9.
  • the empty spindles 5, 6 can now, as shown in FIG. 10, move upward and pick up the second machining tools III and IV from the transfer position using the pickup method.
  • the spindles 5 and 6 are moved downward again according to FIG. 11, as indicated by arrows in FIG. 10.
  • the buffer 4 there are now two empty holding devices 8, 10 in the transfer position and two holding devices 7, 9 with the first machining tools I, II in the ready position.
  • the holding devices in the main memory are now moved in such a way that the placeholders 26 and 27 for the holding devices 7 and 9 with the processing tools I, II are located on the upper rail section 17 of the transfer device 4. As shown in Fig.
  • the receptacles 7, 8, 9, 10 in the buffer 4 are linearly displaced via the cylinder 21, so that the receptacles 7, 9 with the second processing tools I, II of the previous processing step each are on the lower rail section 18 of the transfer device 4.
  • the holding devices 7, 9 with the processing tools I, II are moved from the intermediate store 3 into the main store 2 by a contraction of the cylinder 19 of the transfer device 4, by the lower rail section 18 out of the opening 15 or 16 of the rail 14 of the buffer is moved into the opening 12 or 13 of the rail 11 of the main memory.
  • the placeholders 26, 27 with the upper rail section 17 are moved up out of the main memory.
  • the holding devices with the processing tools are now moved in such a way that the third processing tools V, VI are positioned on the lower rail section 18 of the transfer device 4 for the subsequent processing step.
  • This state is shown in Fig. 14.
  • the cylinder 19 of the transfer device 4 is extended, so that the upper rail section 17 engages in the openings 12, 13 of the main store and the lower rail section 18 in the openings 15, 16 of the intermediate store.
  • the receiving devices 24, 25 with the third Machining tools V, VI moved into the buffer, while the placeholders 26, 27 get into the main memory.
  • the cylinder 21 is moved in the next step, so that the empty pick-up devices 8, 10 are in the transfer position above the spindles 5, 6, while the pick-up devices 24, 25 with the machining tools V, VI in an adjacent staging position.
  • 17 shows how the spindles 5, 6 - after an upward movement - transfer the second machining tools III, IV to the empty holding devices 8, 10 in the pickup process.
  • the spindles 5, 6 now move back, as shown in Fig. 18, by a defined distance, so that the
  • Cradles 8, 10, 24, 25 can be moved by means of the cylinder 21 so that the cradles 24, 25 with the third machining tools V, VI are in the transfer position, while the cradles 8, 10 are in an adjacent ready position, as shown in FIG Fig. 19 is shown. As shown in FIG. 20, the spindles 5, 6 have been moved up again in order to pick up the machining tools V, VI in the pickup process.
  • FIG. 21 shows the state in which the spindles 5 and 6 use a machining tool V, VI to machine a workpiece (not shown) in a further machining step.
  • the spindles 5, 6 operate in synchronous operation.
  • a tool changing device according to the invention can also be used when the spindles work alternately or in another operating mode.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)

Abstract

La présente invention concerne un dispositif de changement d'outil destiné notamment à des machines-outils monobroches ou multibroches. L'invention concerne également un procédé permettant de réaliser un changement d'outil dans un centre d'usinage à commande numérique doté d'au moins une broche. A cet effet, le dispositif de changement d'outil présente un magasin principal (2) destiné à loger plusieurs outils d'usinage (I-VI), au moins un magasin temporaire (3) et au moins un dispositif de transfert (4) permettant de transporter des outils d'usinage entre le magasin principal (2) et le magasin temporaire (3). Le magasin temporaire (3) présente une position de transfert destinée au transfert d'outil entre le magasin temporaire (3) et la broche (5, 6) concernée de la machine-outil.
PCT/EP1999/006574 1998-11-06 1999-09-07 Dispositif de changement d'outil WO2000027583A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99947281A EP1126947A1 (fr) 1998-11-06 1999-09-07 Dispositif de changement d'outil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19851264.3 1998-11-06
DE19851264A DE19851264A1 (de) 1998-11-06 1998-11-06 Werkzeugwechselvorrichtung

Publications (1)

Publication Number Publication Date
WO2000027583A1 true WO2000027583A1 (fr) 2000-05-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/006574 WO2000027583A1 (fr) 1998-11-06 1999-09-07 Dispositif de changement d'outil

Country Status (3)

Country Link
EP (1) EP1126947A1 (fr)
DE (1) DE19851264A1 (fr)
WO (1) WO2000027583A1 (fr)

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ITBO20030071A1 (it) 2003-02-19 2004-08-20 Jobs Spa Macchina utensile.
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