EP0164490B1 - Poinçonneuse avec magasin d'outils - Google Patents

Poinçonneuse avec magasin d'outils Download PDF

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Publication number
EP0164490B1
EP0164490B1 EP85101396A EP85101396A EP0164490B1 EP 0164490 B1 EP0164490 B1 EP 0164490B1 EP 85101396 A EP85101396 A EP 85101396A EP 85101396 A EP85101396 A EP 85101396A EP 0164490 B1 EP0164490 B1 EP 0164490B1
Authority
EP
European Patent Office
Prior art keywords
tool
press according
magazine
piercing press
machine frame
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
EP85101396A
Other languages
German (de)
English (en)
Other versions
EP0164490A2 (fr
EP0164490A3 (en
Inventor
Willi Flick
Walter Bredow
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.)
C Behrens AG
Original Assignee
C Behrens 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 C Behrens AG filed Critical C Behrens AG
Priority to AT85101396T priority Critical patent/ATE39862T1/de
Publication of EP0164490A2 publication Critical patent/EP0164490A2/fr
Publication of EP0164490A3 publication Critical patent/EP0164490A3/de
Application granted granted Critical
Publication of EP0164490B1 publication Critical patent/EP0164490B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/12—Punching using rotatable carriers
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B21D28/265—Perforating, i.e. punching holes in sheets or flat parts with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • B21D37/145—Die storage magazines
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • B21D37/147—Tool exchange carts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1729—Reciprocating tool machine tool [e.g., broaching machine, shaping machine, etc.]
    • Y10T483/1731—Reciprocating tool machine tool [e.g., broaching machine, shaping machine, etc.] including matrix
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2135—Moving stripper timed with tool stroke
    • Y10T83/215—Carried by moving tool element or its support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8742—Tool pair positionable as a unit
    • Y10T83/8743—Straight line positioning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8748—Tool displaceable to inactive position [e.g., for work loading]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9476—Tool is single element with continuous cutting edge [e.g., punch, etc.]

Definitions

  • the invention relates to a cutting press according to the preamble of claim 1.
  • Such cutting presses are known to exist in a variety of forms, usually the workpiece, namely the sheet to be machined, is guided in a motor table relative to the tool in two mutually perpendicular directions.
  • the cutting press must be equipped with the appropriate tool magazines.
  • Both turret cutting presses in which the tool magazine has the shape of a turret plate that can be rotated about a vertical axis, in the peripheral region of which the tool is held, and cutting presses with individual head stations, in which the tools are either inserted manually or automatically from an assigned tool magazine, are known be replaced.
  • connection between the tool holder and its drive takes place via a coupling device, which is designed in such a way that it enables an engagement, starting from the stationary drive, on the moving tool holder over the length of its movability.
  • the coupling device is designed as a pressure plate which can be moved vertically by a motor with a defined stroke and which forms the connecting member between the stationary drive and the moving tool. It is achieved in this way that the masses to be moved during the movement of the tool are kept very small, so that rapid movement of the tool can be achieved even with a small power drive.
  • the workpiece to be machined is mounted in a direction perpendicular to the travel of the tool in a defined manner, so that in connection with the also movable tool magazine, which is specially designed for transferring tool holders into the work station or for removing tool holders from the work station , a very powerful cutting press is available.
  • claims 2 and 3 have the advantage that the tool holder is geometrically relatively simple and clear, so that handling devices for moving the tool holder between the work station and the tool magazine can therefore also be designed relatively simple.
  • both the upper and the lower arm of the tool holder is equipped with special guide devices which are guided on the machine frame, a particularly stable and precise guidance of the tool is guaranteed, which is subject to reliable guidance even with high mechanical loads .
  • the two-part design of the tool holder according to claim 5, on the other hand, has the advantage that it can be built even more space-saving.
  • the individual parts of the tool holder are also equipped with special guide devices to ensure precise guidance during mechanical processing.
  • the coupling pin formed on the tool namely the punch, slides in said longitudinal groove, the longitudinal extent of which essentially corresponds to the movability of the tool in this direction.
  • the pressure plate is subject to very precise vertical guidance and, in particular, cannot tilt under the forces resulting from the mechanical processing process.
  • the pressure plate is driven by two spaced-apart pairs of toggle levers which are pivotally supported on the one hand on the pressure plate and on the other hand on a toggle lever bearing housing.
  • the oscillating drive of this system of toggle levers can take place, for example, via a stationary eccentric shaft which is driven by a conventional electric motor.
  • the pressure plate is subject to very robust vertical guidance.
  • the fact that the toggle lever bearing housing also has a guiding function for the pressure plate results in a very clear arrangement.
  • the actuating rails according to claims 11 and 12 form the part of the coupling device according to the invention which interacts with the scraper pin. According to the invention, these actuating rails are preferably guided on the toggle lever bearing housing, so that the coupling device according to the invention can overall be accommodated in one functional element, namely the toggle lever bearing housing.
  • the actuating rails extend parallel to the longitudinal groove of the pressure plate and also have approximately the same length, which corresponds to the movability of the tool in this direction.
  • a vertical movement of the scraper pin thus comes about because the actuating rails, the lower, horizontally running longitudinal surface of which is in sliding contact with the scraper pin, by horizontal displacement due to their inclined sliding surface, which interacts with a correspondingly inclined guide surface on the machine frame, vertically shift the scraper pin.
  • the tool holders are provided with coupling pieces which can be connected to motor-controlled coupling parts of a drive system. All that is required for a one-piece tool holder is a coupling piece.
  • connection block is mounted so that it can move relative to the machine frame.
  • the magazine station according to claim 19 can be made very large in terms of capacity, so that a correspondingly large tool reservoir is available for mechanical processing. All that is essential is that the tool magazines located in the magazine station can be moved by a motor in the direction of the work station, so that the individual tool holders are available in the work station. By arranging a corresponding location coding of the individual tool holders in the tool magazines, an automatic computer-controlled production of even complex sheet metal structures is possible.
  • All guide devices of the cutting press according to the invention can be coated with a special lubricant made of plastic, which has a low coefficient of friction, or can also be provided with rollers, which likewise reduce the frictional forces.
  • FIG. 1 denotes the stationary machine frame of a cutting press, by means of which flat, flat workpieces can be cut without cutting.
  • the workpiece to be machined lies on both sides of a work station 67 on sheet metal supports 26, 27 which are firmly connected to the machine frame 1.
  • a ball screw 19 which is supported on the machine frame 1 via spindle end bearings 23, 24.
  • a servo motor 25 Adjacent to the spindle end bearing 23 is a servo motor 25 for driving the ball screw 19.
  • a transverse carriage 18, on which a ball nut 20 which is in engagement with the ball screw 19 is fastened, can be driven on both sides in the direction of the arrows X.
  • the cross carriage 18 carries - seen in the direction of the arrows X - spaced-apart clamping elements 22 which serve to hold a workpiece, not shown here.
  • the design of the clamping elements 22 is arbitrary.
  • a conveyor belt 29 Below the sheet metal support 26 is a conveyor belt 29, via which the metal scrap accumulating in the area of the work station 67 is removed.
  • the finished parts are removed via a conveyor belt 30 located below the sheet support 27 and reach this by pivoting a flap 28 which is pivotally mounted about an axis lying in the drawing plane of FIG. 1. This will be discussed in more detail below.
  • the invention is characterized by U-shaped tool receptacles 15, also to be described in more detail below, of which one in the work station 67 is slidably guided over guideways 16 of the machine frame.
  • a tool magazine 75 To the side of the sheet metal supports 26, 27 is a tool magazine 75, which in the present case is provided with holding devices for holding seven tool holders 15. These receiving devices are designed as guideways 91. It can be seen that in Fig. 1 a guideway 91 does not contain a tool holder 15 since it is located in the work station 67 and that the guideways 91 of the tool magazine 75 can be brought into an alignment with the guideways 16 of the machine frame.
  • the tool magazine 75 is mounted on a guide track 73 (FIG. 2) in the direction of the arrows X so that it can be moved by a motor.
  • a servo motor 79 on the machine frame 1, which drives a ball screw 74, which is mounted on the machine frame 1 at both ends and is in engagement with a ball nut 78 (FIG. 2), the arrangement and fastening of which will be discussed in more detail below .
  • a ball nut 62 is mounted, which is in engagement with a ball screw 61, one end of which is coupled in a manner to be described to the tool holder 15 located in the work station 67.
  • the ball screw 61 is used to implement a drive for the tool holder in the direction of the arrows Y.
  • Lifting rails 77 extend on both sides of the guideways 73 at one end of the machine frame and serve in a manner to be explained to transfer a tool magazine 75 into a magazine station 88.
  • the magazine station 88 is characterized by guide rails 80 which run essentially perpendicular to the lifting rails 77 and which serve to guide a sliding carriage 81.
  • the sliding carriage 81 can be moved on these guide rails 80 essentially between the stations 84, 85 and 86, preferably by means of a drive, not shown here.
  • These receiving rails 82 are otherwise designed and arranged in connection with the sliding carriage 81 in such a way that they can be brought into a position aligned with the lifting rails 77.
  • the part of the machine frame 1 in which the lifting rails 77 extend represents a transfer station 83 which serves to transfer a tool magazine 75 into the magazine station 88. This will also be explained in more detail below.
  • the magazine station 88 serves both to enlarge the tool reservoir available for mechanical processing and to load the cutting press with other tools or to replace individual tools.
  • the ball nut 62 assigned to the feed system 89 is driven via a gear 63, which meshes with the pinion 69 of a servo motor 71 via a toothed belt 64.
  • the servo motor 71 is fastened to the machine frame 1 in a manner not shown in detail.
  • the end of the ball screw 61- facing away from the gear 63 carries a coupling element 59 which establishes the connection to the tool holder 15 and which will be described in more detail below.
  • the tool magazine 75 shown here in simplified form, is supported on a magazine carriage 72, the latter of which is slidably guided on the guide tracks 73 perpendicular to the plane of the drawing in FIG. 2.
  • a ball nut 78 is fastened to an underside of the magazine slide 72 and engages with the ball screw 74.
  • the tool magazine 75 is fixed on the magazine carriage 72 by means of special centering devices 76, which act in a form-fitting manner and are explained in more detail.
  • the lifting rails 77 extending parallel to the side of the guideway 73 can also be seen.
  • the lifting rails 77 are supported on piston-cylinder units 87 so that there is the possibility of lifting seemed to raise or lower 77 in the direction of arrows 108.
  • the centering devices 76 are also equipped as piston-cylinder units, the cylinders of which are fastened to the magazine slide and the piston rods of which can be inserted into bores in the tool magazine 75 and lock them in this way.
  • the already mentioned tension pillar 97 is connected to the tension pillars 98 not numbered in FIG. 2 via a bridge 2 which extends essentially horizontally in the upper part of the cutting press.
  • a bridge 2 which extends essentially horizontally in the upper part of the cutting press.
  • Supported on the bridge 2 is a toggle lever bearing housing 11, within which a pair of toggle levers 9 arranged horizontally at a distance from one another can be actuated by a pull rod 8.
  • the toggle levers 9 are on the one hand pivotally attached to the toggle lever bearing housing via toggle lever bolts 12 and to a pressure plate 10 via toggle lever bolts 12 '.
  • the eccentric shaft 6 is driven by a motor 4 via a flywheel 5 and a belt 93. Clutch and brake elements, which are functionally arranged between the flywheel 5 and the eccentric shaft 6, are not shown in the drawing.
  • the attachment of the engine 4 including the bearing of the flywheel 5 and the eccentric shaft 6 takes place on the machine frame 1.
  • support rails are designated, which are attached to the machine frame 1 and serve to attach the tool holder 15 in a manner yet to be explained.
  • the latter takes place in the area of the guide head 96 arranged at one end of the tool holder 15 by means of a groove 39, which will be discussed in more detail below.
  • FIG. 3 shows the tool set held in detail in a tool holder 15.
  • This consists of a die 35, a stripper 45 and a punch holder 42 with a punch 43.
  • the tool holder 15 is U-shaped, the U being in a lying arrangement.
  • Its lower arm 31 is provided with a bore 36 which serves to receive the die 35, while the guide head 96 is fastened in the upper arm 32.
  • This attachment is carried out by means of grooves 39 which extend essentially horizontally on both sides and into which guide lugs 40, which are formed on the support rails 3 which extend on both sides of the guide head 96, engage.
  • the scraper 45 is fastened in a scraper shoe 44, which is held in this by scraper bolts 46, which also extend through the guide head 96.
  • the scraper bolts 46 are supported with the aid of spring elements 47 in enlarged bores 50 of the guide head 96 in each case.
  • the spring elements 47 are supported at their ends facing away from the bores 50 on the heads of the wiper bolts.
  • a feather key 99 which is fastened to the guide head 96 and is guided in a guide groove 100 of the stamp holder 42, serves to secure it against rotation within the guide bore 41, within which the stamp holder is arranged.
  • actuating rails 52 are guided in the toggle lever bearing housing 11 in a manner to be described in greater detail - perpendicular to the plane of the drawing in FIG. 3. This guidance takes place via guide projections 53 attached to these actuating rails 52, which extend essentially perpendicular to the plane of the drawing in FIG. 3 and which engage with corresponding guide grooves 54 of the toggle lever bearing housing 11.
  • the stamp holder 42 is provided with a coupling pin 48, which is T-shaped in the plane of FIG. 3 and is slidably guided in a correspondingly shaped longitudinal groove 49 of the pressure plate 1 - seen perpendicular to the plane of FIG. 3.
  • the coupling pin 48 is used to transmit a compressive force to the plunger 43 in the direction of the arrows 109.
  • the pressure plate 10 is provided with guide lugs 94 running laterally on both sides, which are in engagement with corresponding grooves running parallel to the arrows 109. In this way, the pressure plate 10 is positively secured in a direction perpendicular to the plane of FIG. 3.
  • FIG. 3 also shows the exact design of the guide for the lower part of the tool holder 15.
  • the lower part of the latter is profiled in the lower region — seen in the plane of the drawing in FIG. 3 — in the manner of a T, the lateral legs 33 being designed accordingly Guide path 110 of the machine frame 1 are guided.
  • the legs 33 are also secured in the vertical direction by cover rails 34.
  • a slot in the machine part 1 is designated, which is aligned with the hole 37, is used to discharge the scrap and extends - perpendicular to the plane of the drawing in Fig. - In a length that the displaceability of the tool holder 15 in the Workstation 67 corresponds.
  • Fig. 4 shows in particular the design and arrangement of the scraper bolts 46 which are guided in bores 51 and on which the actuating rails 52 can be used.
  • the actuating rails 52 extending on both sides in the longitudinal direction of the tool holder 15 are fastened to one another at their ends via connecting pieces 55, 55 '. Starting from the connecting piece 55, the upper edges of the actuating rails 52 run inclined towards the connecting piece 55 ′, these inclined upper edges being numbered 102. These upper edges 102 are in engagement with correspondingly inclined guide surfaces 103 of the toggle lever bearing housing 11.
  • piston rod 57 of a piston-cylinder unit 56 is connected to the connecting piece 55, the cylinder of the latter being fastened to the toggle lever bearing housing 11 in a manner not shown, via a bracket 58. It can be seen that, by pressurizing the piston-cylinder unit 56, a movement of the piston rod 57 and thus the actuating rails 52 in the direction of the arrows 110 can be brought about, vertical movements due to the interaction of the inclined upper edge 102 in conjunction with the mentioned guide surfaces 103 of the actuating rails 52 can be triggered in the direction of the arrows 111, which immediately results in corresponding vertical movements of the wiper bolts 46. The scraper shoe and thus the scraper are advanced over the latter.
  • a coupling piece is designated, which is provided with a bore 112, the operation of which will be described in more detail below.
  • FIG. 5 and 5a show how the ball screw 61 can be coupled to a tool holder 15.
  • the end section of the ball screw 61 is supported in a fork part 106, which is slidably supported by a guide shoe 66 in the guide track 91 of the tool magazine 75 or the guide track 16 of the machine frame 1.
  • the guide shoe 66 consequently has a profile which is adapted to the dimensions of the lower arm 31 of the tool holder 15 which is T-shaped in cross section according to FIG. 3. It can be seen from FIG. 5a that the guide track 91 of the tool magazine 75 is also partially covered by cover rails 34.
  • the fork part 106 forms a coupling part 106 'and ends on its end remote from the ball screw 61 in two vertically spaced holding elements which are each provided with mutually aligned bores 105.
  • the hole 112 present in the coupling piece 60 of a tool holder 15 already mentioned is arranged in connection with this coupling part 106 'in such a way that it can be brought into alignment with the holes 105 of the fork part 106.
  • the fork part 106 also supports, supported on a bracket 113, the cylinder of a piston-cylinder unit 68, the piston rod 104 of which carries a locking cylinder 114 which can be introduced into the bores 105 and 112. It can be seen that a tool holder 15 is coupled to the ball screw 61 by actuating the piston-cylinder unit 68 in this way. and in this way the tool holder 15 can be moved in the Y direction (FIG. 1) relative to a workpiece.
  • Fig. 6 shows the more precise position of the conveyor belts 29 and 30 below the sheet supports 26 and 27.
  • the metal scrap resulting from the stamping process is then transported via the conveyor belt 29 into a waste container 70, whereas the finished stamped parts are transported onto the conveyor belt 30 via the flap 28 pivoted into the position 28 ′ about an axis 115 running perpendicular to the drawing plane of FIG. 6 arrive and from this are fed to a stacking device 107.
  • the stacking device 107 is essentially designed as a simple angle plate.
  • Fig. 7 shows the exact design of the drive of the tool magazine 75 in the X direction.
  • the ball nut 78 is fastened to the magazine slide 72 and engages with the ball screw 74, so that by rotating the latter by means of the servo motor 79, the tool magazine held on the magazine slide 72 by means of the centering devices 76 can be moved overall in the X direction.
  • the tool magazine 75 can then be transferred to the receiving rails 82 in the X direction.
  • This process from the lifting rails 77 to the receiving rails 82 can also be carried out by means of a drive, not shown here in the drawing.
  • the tool magazine 75 In the magazine station 88 located to the side of the transfer station 83, the tool magazine 75, which is located here on a sliding carriage 81, is slidably mounted perpendicular to the plane of the drawing in FIG. 7.
  • FIGS. 1 to 10 show a variant of the subject matter of the invention, in which instead of U-shaped, coherent tool holders 15 in a tool magazine 17 two-part tool holders 15 'are provided, each consisting of a punch holder guide 21 and a separate die guide 65.
  • the tool magazine 17 consists of a magazine base plate 70 and a magazine cover plate 95, which in turn are connected to one another by laterally spaced magazine partitions 96.
  • the magazine partitions 96 are each equipped with a pair of substantially horizontally extending transfer rails 143 for the stamp holder guide 21 and for the die guide 65. These transfer rails 143 have a lateral spacing and a configuration which corresponds to the guide lugs 40 of the support rails 3 and interact with them in a manner to be explained in more detail.
  • the punch holder guide 21 and the die guide 65 are provided on both sides with guide grooves 144 which are dimensionally matched to the transfer rails 143 and can be brought into engagement therewith.
  • both the punch holder guide 21 and the die guide 65 are inserted when inserted into the tool magazine 17 until a stop, which is determined for the punch holder guide 21 by an angle part 101 and for the die holder 65 by an angle part 105.
  • both the punch holder guide 21 and the die holder 65 in the magazine are secured against the tool magazine 17 by spring-loaded locking bolts 115, which can be snapped into corresponding bores 116 in the punch holder guide 21 or die guide 65.
  • Both the punch holder guide 21 and the die holder 65 are - as can be seen in FIG. 9 - provided at one end with a T-shaped coupling piece 117, which serves to displace them in the Y direction relative to the tool magazine 17.
  • a ball screw 118 is provided, one end of which is mounted in a connecting block 119 which can be displaced in the Y direction with respect to the machine frame 1 and the other end of which is mounted in a large block 120 fastened to the machine frame 1.
  • the drive takes place via a toothed wheel 121, which is in engagement with the pinion 123 of a servo motor 124 via a toothed belt 122.
  • Via a rotatably mounted ball nut 125 which is axially supported on the one hand with respect to the gear 121 and on the other hand with respect to the bearing block 120, the ball screw 118 can be advanced in the Y direction.
  • One end of the ball screw 118 facing away from the bearing block 120 carries a coupling part 126 which has a receiving groove 127 for receiving the coupling piece 117.
  • the coupling piece 117 can be inserted perpendicularly to the plane of the drawing in FIG. 9 into the receiving groove 127.
  • the coupling part 126 carries a piston-cylinder unit 128, on the piston rod of which a clamping part 129 is attached, which is designed to engage behind the T-shaped coupling piece 117.
  • a push rod 130 which is passed through the bearing block 120 and carries at its end a coupling part 126 'designed in accordance with the coupling part 126, which in the same way with a piston-cylinder unit 128', a receiving groove 127 'and a clamping piece 129' is equipped.
  • the other arrangement of the coupling part 126 ' is designed such that it can be used to detect the coupling piece 117 assigned to the stamp holder guide 21.
  • the stamp holder 42 is inserted into a stamp holder bore 131, the coupling pin 48 being held in a stamp holder groove 132 which is T-shaped in cross section and is incorporated in the magazine cover plate 95.
  • the die 35 is in turn inserted into a receiving bore 133 in the die guide 65.
  • the tool magazine 17 or its magazine base plate 70 is locked in the horizontal direction on a magazine slide 134 by means of a plurality of piston-cylinder units 135, each of which is assigned a centering pin 136.
  • the magazine carriage 134 is in turn mounted in a guideway 140 of the machine frame 1 so that it can be moved by a motor perpendicular to the plane of the drawing in FIG. 9, a method being carried out by means of a ball screw 138, which can be driven in a manner analogous to the ball screw 74 (FIG. 1) by means of a servo motor , wherein the drive of the magazine carriage 134 takes place via a ball nut 139 attached to it.
  • lifting rails which serve in an analogous manner to the lifting rails 77 according to FIG. 1 for separating the tool magazine 17 from the magazine slide 134.
  • piston-cylinder units 141 below the lifting rails, by means of which the tool magazine 17 can be raised relative to the magazine carriage 134.
  • the punch holder groove 132 of the tool magazine 17 can be moved into a position in which it runs in alignment with the longitudinal groove 49 of the pressure plate 10.
  • the machine frame 1 is also provided in its work station with a pair of guide lugs 142, which correspond in cross section to the transfer rails 143 and are arranged below the guide lugs 40.
  • the lower transfer rails 143 of a tool magazine 17 can moreover be brought into a horizontally aligned arrangement with these guide lugs 142.
  • the entire tool set is located in a coherent tool holder 15, the respective tool set being removable from a tool magazine 75.
  • the relevant tool set of the tool magazine is moved into the position suitable for insertion into the work station 67 by actuating the servo motor 79 and the tool set is then moved in the Y direction by actuating the servo motor 71.
  • the sheet metal to be machined which is held on the cross carriage 18 via the clamping elements 22, can be moved in the X direction by means of the servo motor 25.
  • a tool magazine 75 By moving a tool magazine 75 by means of the servo motor 79 into the transfer station 83, a tool magazine 75 can be separated from the respective magazine carriage 72 and moved horizontally into the magazine station 88 by actuating the lifting rails 77 by means of the piston-cylinder units 87 assigned to them.
  • the latter process is also expediently designed to be carried out by a motor.
  • the magazine station 88 represents a warehouse for a large number of tool magazines, in which entire tool sets or tool holders can be exchanged at the same time while the work program is otherwise running.
  • the tool magazines 75 are transverse to the X axis, i.e. Slidably mounted in the direction of the Y axis.
  • This displacement process of the tool magazines 75 in the magazine station 88 is also preferably motorized.
  • the tool holder 15 To replace a tool holder 15 inserted in the work station 67, the tool holder 15 must be withdrawn completely from it, so that the tool magazine 75 can then be moved in the X direction according to the position of the new tool holder 15 to be inserted. It is essential that when the tool set is moved, its drive, namely the pressure plate, because of the special design of the coupling device between the latter and the tool holder, does not participate in the feed movement in the Y direction. In this way, the masses to be moved during the feed movement of the tool are kept small.
  • the scraper 45 is first moved down to the sheet to be punched by activating the piston-cylinder unit 56, which is achieved by horizontally displacing the actuating rails 52, through their oblique upper edge 102 in connection with the guide surface 103 of the toggle lever bearing housing 11, the wiper bolts 46 act against the action of the spring elements fixing them via the wiper shoe 44 on the wiper 45.
  • the pressure is then transferred to the punch 43 via the toggle levers 9, the scrap resulting from the punching process falling through the slot 38 onto the conveyor belt 29 located below.
  • the stamp is retracted by means of the toggle lever 9, while the scraper is retracted by activating the piston-cylinder unit 56 in the opposite direction.
  • the space required for the tool holder which is not designed here as a unitary body, is reduced, but the kinematics of the movement sequences occurring during mechanical processing is similar to the embodiment described at the beginning.
  • the set of tools located in the work station 67 is moved in the Y direction by means of the servo motor 124, a punch holder guide 21 and a die guide 65 simultaneously being moved, with their locking by the locking bolts 115, along the transfer rails 143 and at the ends thereof being moved further are finally taken over by the guide lugs 40 and 142 in the Y direction.

Claims (20)

1. Machine poinçonneuse pour découper des pièces en forme de plaque, déplaçables en ligne droite sur une table de travail dans une direction (X) à l'aide d'un moteur comprenant un poste de travail (67) dans lequel se trouve un moyen d'entraînement d'un outil maintenu dans un porte-outil (15, 15'), ce moyen d'entraînement pouvant être déplacé par moteur dans le poste de travail (67), dans une direction (Y) sensiblement perpendiculaire à la direction (X), et comprenant au moins un magasin d'outils (17, 75), dans lequel l'outil est disponible sous la forme d'une multiplicité de jeux d'outils complets pour transfert mécanique au poste de travail, magasin dans lequel des outils extraits du poste de travail peuvent être remisés, caractérisée en ce qu'au poste de travail le moyen d'entraînement de l'outil est disposé de façon stationnaire, en ce qu'un dispositif d'accouplement, constitué par une plaque de pression (10) déplaçable verticalement, sur une course définie, au moyen d'un moteur, est disposée entre le moyen d'entraînement et le porte-outil (15, 15') en couvrant les déplacements de ce dernier, et en ce que le magasin d'outils (17, 75) est disposé de façon à être entraîné par moteur, par rapport au poste de travail (67), dans la direction (X) sur le châssis (1) de la machine.
2. Machine poinçonneuse selon la revendication 1, caractérisée en ce que les porte-outils (15) sont d'une seule pièce.
3. Machine poinçonneuse selon la revendication 2, caractérisée en ce que les porte-outils (15) sont conformés en U et disposés horizontalement, les régions d'extrémité de chaque bras supérieur (32) et de chaque bras inférieur (31) incluant l'outil, à savoir un poinçon (43), un extracteur (45) et une matrice (35).
4. Machine poinçonneuse selon la revendication 3, caractérisée en ce que le bras supérieur (32), aussi bien que le bras inférieur (31) du porte-outil (15) sont équipés de dispositifs de guidage, qui coopèrent avec le châssis (1) de la machine de telle façon que les bras (31, 32) soient guidés pour coulisser dans le sens horizontal et sont maintenus verticalement de toutes parts.
5. Machine poinçonneuse selon la revendication 1, caractérisée en ce que les porte-outils (15') sont constitués en deux parties, à savoir une partie supérieure et une partie inférieure, lesquelles sont chacune équipées de dispositifs de guidage qui coopèrent avec le châssis (1) de la machine de telle façon que les parties soient guidées avec coulissement dans le sens horizontal et maintenus de toutes parts dans le sens vertical et en ce que l'outil maintenu dans lesdites parties est constitué par un poinçon (43), un extracteur (45) et une matrice (35).
6. Machine poinçonneuse selon l'une des revendications précédentes 1 à 5, caractérisée en ce que la plaque de pression (10) présente une rainure longitudinale (49) qui s'étend dans la direction (Y) et en ce que la rainure longitudinale (49) est constituée pour obtenir la fixation verticale mécanique d'une partie mobile de l'outil, à savoir, du poinçon (43).
7. Machine poinçonneuse selon la revendication 6, caractérisée en ce que le porte-poinçon (42) du poinçon (43) est pourvu d'une cheville d'accouplement (48), laquelle est guidée, avec coulissement dans la rainure longitudinale (49) orientée dans la direction (Y), en étant maintenue verticalement de toutes parts.
8. Machine poinçonneuse selon la revendication 6 ou 7, caractérisée en ce que la plaque de pression (10) est guidée verticalement avec coulissement par rapport au châssis (1) de la machine, mais est maintenue horizontalement de toutes parts.
9. Machine poinçonneuse selon l'une des revendications précédentes 6 8, caractérisée en ce que la plaque de pression (10) est reliée à deux paires de leviers à genouillère (9) écartés l'un de l'autre dans la direction (Y), en ce que les deux paires de leviers à genouillère (9) sont reliées l'une à l'autre par un tirant (8) commun s'étendant sensiblement horizontalement et en ce que le tirant (8) peut être entraîné à va-et-vient dans sa direction longitudinale.
10. Machine poinçonneuse selon la revendication 9, caractérisée en ce que les paires de leviers à genouillère (9) sont disposées dans une boîte de palier (11) pour levier à genouillère, qui est reliée de façon fixe au châssis (1) de la machine, la plaque de pression (10) étant guidée avec coulissement dans la région d'extrémité ouverte de ladite boîte et en ce que les leviers à genouillère (9) sont supportés de façon à pouvoir pivoter d'une part sur la boîte de palier (11) et d'autre part sur la plaque de pression (10) par l'intermédiaire d'axes de leviers à genouillère (12, 12').
11. Machine poinçonneuse selon l'une des revendications 3 à 10, caractérisée en ce que des tiges d'extracteur (46) maintenues par des ressorts sont guidées parallèlement au poinçon (43) dans le bras supérieur (32) ou dans la partie supérieure du porte-outil (15, 15'), et en ce que, pour le déplacement des tiges d'extracteur (46), des barres d'actionnement (52) sont disposées avec coulissement sur le châssis (1) de la machine, en ce que ces barres d'actionnement (52) s'étendent dans la direction (Y) et sont guidées essentiellement dans cette direction en coulissant par rapport au châssis (1) de la machine, par l'effet d'un moteur, et en ce que les barres d'actionnement (52) restent en contact glissant par une surface longitudinale avec les tiges d'extracteur (46), et en ce que les barres d'actionnement (52) comportent chacune une surface de glissement inclinée par rapport au plan horizontal et suivant la direction (Y), cette surface étant en contact glissant avec des surfaces de guidage (103, inclinées de façon correspondante, sur le châssis (1) de la machine.
12. Machine poinçonneuse selon la revendication 11, caractérisée en ce que les barres d'actionnement (52) s'étendent dans la direction (Y) des deux côtés de la plaque de pression (10) et en ce que les surfaces de guidage (103) sont pratiquées dans la boîte de palier (11) du levier à genouillère.
13. Machine poinçonneuse selon l'une des revendications précédentes 1 à 12, caractérisée en ce que les porte-outils (15, 15') sont équipés de pièces d'accouplement (60, 117), lesquelles coopèrent avec des parties d'accouplement (106', 126, 126') d'un système d'entraînement pour déplacer les porte-outils (15, 15') dans la direction (Y).
14. Machine poinçonneuse selon la revendication 13, caractérisée en ce que les parties d'accouplement (106, 126, 126') du système d'entraînement sont constituées de manière à être embrayables par moteur.
15. Machine poinçonneuse selon la revendication 13 ou 14, caractérisée en ce que le système d'entraînement est constitué par une vis à circulation de billes (61, 118), dont une extrémité est supportée sur le châssis (1) de la machine par l'intermédiaire d'un écrou tournant à billes entraîné par moteur et dont l'autre extrémité porte la partie ou les parties d'accouplement (106', 126, 126').
16. Machine poinçonneuse selon l'une des revendications précédentes 13 à 15, caractérisée en ce que, pour un porte-outil (15') en deux parties, la partie supérieure et la partie inférieure comportent une pièce d'accouplement (117), en ce qu'une partie d'accouplement (126, 126') du système d'entraînement correspond à chaque pièce d'accouplement (117), en ce que l'une (126) des parties d'accouplement est déplaçable dans la direction (Y) par l'intermédiaire d'une vis à circulation de billes tournante (118), et l'autre partie d'accouplement (126'), par l'intermédiaire d'une bielle (130) s'étendant parallèlement à la vis à circulation de billes (118) et en ce que la bielle (130) est accouplée cinématiquement avec la vis à circulation de billes (118) par l'intermédiaire d'un bloc de jonction (119).
17. Machine poinçonneuse selon l'une des revendications précédentes 1 à 16, caractérisée en ce que le magasin d'outils (17, 75) peut être déplacé sur le châssis (1) de la machine par l'intermédiaire d'un coulisseau de magasin (72, 134).
18. Machine poinçonneuse selon la revendication 17, caractérisée en ce que le magasin d'outils (17, 75) peut être commandé mécaniquement sur le coulisseau de magasin (72, 134), en étant cependant centré de façon détachable.
19. Machine poinçonneuse selon la revendication 17 ou 18, caractérisée en ce que le magasin d'outils (17, 75) peut être déplacé, de préférence par moteur, entre le poste de travail (67) et un poste de magasin (88), en ce que le poste de magasin (88) est agencé pour recevoir une multiplicité de magasins d'outils (17, 75) et en ce que n'importe quel magasin d'outils (17, 75) peut être transféré du poste de magasin (88) au poste de travail (67) et inversement.
20. Machine poinçonneuse selon la revendication 19, caractérisée en ce que les magasins d'outils (17, 75) se trouvant au poste de magasin (88) peuvent être déplacés sensiblement transversalement par rapport à la direction de déplacement possible du coulisseau de magasin (72. 134).
EP85101396A 1984-06-15 1985-02-09 Poinçonneuse avec magasin d'outils Expired EP0164490B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85101396T ATE39862T1 (de) 1984-06-15 1985-02-09 Schneidpresse mit werkzeugmagazin.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3422250 1984-06-15
DE19843422250 DE3422250A1 (de) 1984-06-15 1984-06-15 Schneidpresse mit werkzeugmagazin

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EP0164490A2 EP0164490A2 (fr) 1985-12-18
EP0164490A3 EP0164490A3 (en) 1987-08-19
EP0164490B1 true EP0164490B1 (fr) 1989-01-11

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US (1) US4646600A (fr)
EP (1) EP0164490B1 (fr)
AT (1) ATE39862T1 (fr)
DE (2) DE3422250A1 (fr)

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JP3442590B2 (ja) * 1995-11-20 2003-09-02 株式会社アマダ パンチング加工機およびその加工方法
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Also Published As

Publication number Publication date
EP0164490A2 (fr) 1985-12-18
DE3422250A1 (de) 1985-12-19
ATE39862T1 (de) 1989-01-15
EP0164490A3 (en) 1987-08-19
DE3567389D1 (en) 1989-02-16
DE3422250C2 (fr) 1987-08-20
US4646600A (en) 1987-03-03

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