EP0918580B1 - Vorrichtung zum verschieben eines teils einer maschine und ausüben einer kraft am bewegungsende - Google Patents

Vorrichtung zum verschieben eines teils einer maschine und ausüben einer kraft am bewegungsende Download PDF

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Publication number
EP0918580B1
EP0918580B1 EP97931892A EP97931892A EP0918580B1 EP 0918580 B1 EP0918580 B1 EP 0918580B1 EP 97931892 A EP97931892 A EP 97931892A EP 97931892 A EP97931892 A EP 97931892A EP 0918580 B1 EP0918580 B1 EP 0918580B1
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EP
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Prior art keywords
axis
assembly
bearings
machine
shaft
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EP97931892A
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English (en)
French (fr)
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EP0918580A1 (de
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Jean-Claude Jeandeaud
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    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
    • B21D5/045—With a wiping movement of the bending blade
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work

Definitions

  • the present invention relates to a device for move part of a machine and exert a force in limit switch, according to the preamble of claim 1.
  • Such a device can be used in a machine tool, such as a punching machine or a folder.
  • a machine tool such as a punching machine or a folder.
  • the tool the punch or the folding head
  • the workpiece the workpiece is first approached the workpiece then, at the end of the stroke, a significant effort is exerted on the tool.
  • the fluid used to supply the cylinders has physical properties (viscosity %) dependent on the temperature. A variation of this results in changes in the pressure delivered by the unit supplying the hydraulic circuit with fluid hydraulic. As the pressure varies, the effort exerted by the cylinder on a moved object also varies. To get a constant effort, whatever the temperature ambient, summer and winter, a system for regulating pressure is required. This system may include a refrigeration device and heating device to keep the hydraulic fluid at temperature constant.
  • a hydraulic circuit also requires a regular maintenance.
  • the fluid used can cause impurities and a filtration system is required.
  • the filters must be cleaned and the hydraulic fluid must be drained.
  • the use of servo valves, necessary in a circuit with regulation efficient, requires having a hydraulic fluid always clean.
  • Document US Pat. No. 3,795,168 discloses a device for drive part of a machine tool like a press or a punching machine.
  • This device comprises a first assembly intended to move the part of the machine, a second set rotated and mounted on a bearing, as well as a connecting piece mounted on the one hand via a first connecting axis on the first set and secondly through a second connecting axis on the second set, the defined axis by the bearing being offset with respect to the second axis of liaison.
  • the object of the invention is to provide a device to move part of a machine by exercising a significant effect at the end of the stroke and allowing use a source of clean energy and not posing significant enslavement problems.
  • Claims 11 to 14 relate to the use of the device according to the invention in machine tools.
  • the device presents a first system allowing to move the part of the machine mounted in series with an eccentric system.
  • the first system allows the movement of the machine part to be moved without exerting any particular effort on this part and the second allows to exert an effort on this part of machine.
  • the first system is chosen according to the desired travel stroke.
  • the offset between the axis of the bearing and the second connecting axis is chosen in function of the effort to be exerted. When the effort to exercise is important, the offset is small. In this way, a electric motor provides sufficient torque to obtain the effort required at the part of the machine.
  • the first set includes a shaft rotated at the end which is mounted a plate having an offset pin serving as the first connecting axis for the element of link
  • the second set consists of a crankshaft having two bearings of connecting rods defining the connecting axis of the connecting piece and a bearing crankshaft on which the machine part is mounted move.
  • the first, respectively the second, together are constituted by a crankshaft having two bearings constituting the first, respectively the second, bearings and one bearing, placed between these two bearings whose axis corresponds to the connecting axis of the connecting piece, the first bearings are mounted in a fixed machine frame, and the second bearings are integral with the part of the moving machine.
  • Rotating sets can be rotated directly or indirectly.
  • the first set and / or the second set is mounted on the output shaft of an electric motor.
  • the first set and / or the second set is rotated by a pulley over which a belt, preferably a toothed belt.
  • the first and the second sets are each provided with a pulley, both pulleys being parallel to a third pulley driven by a motor and a single toothed belt transmitting the rotational movement from the third pulley to both raw. This form of execution makes it possible not to use only one motor and also to synchronize perfectly training of the two sets.
  • the invention provides an advantageous embodiment in which, the connecting element is pivotally mounted around a shaft fixed axis, connecting axes and fixed shaft axis forming a triangle, and in which the second bearings are made at the end of a connecting rod, the other end is pivotally mounted on a third bearing fixed.
  • the fixed axis shaft is advantageously rotated and has two toothed pulleys, each equipped with a clutch and one pulleys is connected by a first toothed belt to the first set, the other being connected by a second toothed belt to the second set.
  • the fixed shaft has a third pulley for to allow the rotational drive of the shaft from a fixed axis motor parallel to the fixed axis of the shaft by means of a third toothed belt.
  • the first and the second set include a system with eccentric
  • the first set includes a lever, connected on the one hand to the part of the machine to be moved and on the other share to a cylindrical shaft through a first connecting axis, parallel but offset from to the cylindrical shaft
  • the second set includes a part driven in rotation about the axis defined by the second bearings, this part having an axis bore parallel but offset from the axis defined by the second bearings and serving as housing for bearings, and the housing bearings of the second set receive the cylindrical shaft which drives the lever and constitutes the connecting piece.
  • This embodiment is compact.
  • the first and second set are found side by side on a cylindrical connecting shaft.
  • the room driven in rotation of the second assembly is mounted on bearings fixed. It can be fitted with peripheral teeth on which engages a pinion driven in rotation by a motor.
  • the cylindrical axis of connection is driven and moves. This stroke is weak and is used to transmit some efforts.
  • the race to move the part of the machine is made by driving the cylindrical shaft of link in rotation around its axis.
  • the first axis of connection is then driven and thus controls the stroke of the the sink.
  • a device as described above can be applied to a machine tool intended for folding a sheet metal, in which a sheet metal is held between blank clamps, and having a folding head for folding the sheet held between the blank clamps.
  • a device can be used to control the folding movement, but it can also be used for control of the approach and tightening movement of the blank clamps.
  • a spring is advantageously placed between the frame and a part to be moved, in particular the folding head or the blanks. In this way, the spring can substantially balance the weight of the part to be moved and the corresponding motor may have less power for the displacement of the same mass.
  • a device according to the invention can also be applied to a machine tool intended for punching of a sheet metal, in particular when controlling the tool punching.
  • FIGS 1 and 2 show examples of application of devices according to the invention.
  • the following figures show in more detail the operation of such devices.
  • Figure 3 shows in section a device according to the invention, allowing a head to be moved vertically folding 2 of a folder.
  • the latter is intended for folding of a sheet 4, held between two blank clamps 6.
  • One of the blank clamps 6 is movable in order to be able to release the sheet 4 and is mounted at the end of a pivoting arm 8.
  • a device according to the invention controls the movement of this arm 8.
  • the folding head 2 is moved using two devices according to the invention, one for moving vertical of the folding head 2, the other for its horizontal displacement. Here too, it was not until the end of stroke of tool 2, when it has to bend sheet metal 4, is necessary to exert an effort on it.
  • the device according to the invention comprises a first motor on which is mounted a disc 12 provided with a crank pin 14, a connecting rod 16, a crankshaft 18 connecting the connecting rod 16 to a support 20 of the folding head 2, and a second motor 22.
  • the first motor 10 is mounted on a frame 24 of the folder shown in Figure 2. It has a tree outlet 26 rotating around an axis of rotation 28. The bearings of the output shaft 26 are placed inside of the motor 10 and are not visible in the drawing.
  • the disc 12 is mounted coaxially on the output shaft 26, a clutch (not shown) which can be provided between the shaft 26 and the disk 12.
  • the crank pin 14 has an axis parallel to the axis of the output shaft 26. This axis of crank pin defines the first connecting axis 30 with the connecting rod 16, which is mounted on this crank pin 14 by one of its ends.
  • the other end of the connecting rod 16 is in the form of fork with two branches, between which comes places the support 20 of the folding head.
  • Each of branches has a bore serving as a bearing 32 at crankshaft 18.
  • This axis 34 constitutes the second connecting axis.
  • the crankshaft 18 has two connecting rod bearings 36 each mounted in a bearing 32 and interconnected by a crankshaft bearing 38 on which the support 20 of the folding head.
  • Axis 40 of the bearing of crankshaft is parallel to the connecting axis 34 but offset from it.
  • the second motor 22 is mounted integral with the support 20 of the folding head and its output shaft is mounted coaxially to the bearing crankshaft 38, directly or with for example interposition of a clutch not shown.
  • the axes 28.40 of the first and second motors and the connecting axes 30.34 are parallel.
  • the first motor 10 when it drives rotation of the disk 12, displaces the connecting rod 16 and by consequently the support 20 of the folding head.
  • the race maximum of the connecting rod is equal to twice the offset existing between axis 28 of the first motor and the first connecting axis 30.
  • the second motor 22 when rotates the crankshaft 18, causes a relative displacement between the connecting rod 16 and the support 20 of the folding head. This displacement is at most equal to twice the distance between the second connecting axis 34 and the axis 40 of the crankshaft bearing.
  • the first motor 10 is used for bringing together and the distance of the folding head 2 from the sheet metal 4.
  • the second motor 22 is used for folding sheet metal 4. So that the torque exerted by the second motor 22 is sufficient to bend the sheet, the distance between the second connecting axis 34 of axis 40 of the bearing crankshaft is weak.
  • the axis 28 of the first motor is placed so that the line action of the forces exerted on the sheet 4 cuts this axis 28, so that the torque exerted on this axis 28 by reaction of the forces exerted on the sheet is zero. So, the device is stable while efforts are being made exerted on the sheet metal and the forces exerted on the bearings are optimized.
  • the device used to vertically move the 6 mobile blank holder is similar to the one described above and is therefore not described in more detail here.
  • Figures 4 and 5 show another form of realization of a device according to the invention for move the arm 8 and the folding head 2. On these figures, elements similar to those of figures 2 and 3 have the same references.
  • the connecting piece 64 is substantially shaped triangular, bearings located at the tops of the triangle formed by this piece.
  • a toothed pulley 70 is mounted coaxially to axis 28 on a bearing made at the end of a connecting rod 66.
  • the other end of the connecting rod 66 is mounted swivel on a support 68, fixed relative to the frame 24 of the folder.
  • a first toothed belt 72 drives the toothed pulley 70.
  • the third vertex of the connecting piece 64 is pivotally mounted on a shaft 80 of fixed axis.
  • This tree 80 carries three pulleys and the connecting piece 64. It is mounted on bearings integral with the frame 24 and not shown in the drawing.
  • a pulley 82 is driven by a third toothed belt 84.
  • the other two pulleys each drive a toothed pulley 70.74 using one of the belts 72,76 mentioned above.
  • a motor, not shown, fixed on a support 86 integral of the frame 24 drives the toothed belt 84 and therefore the pulley 82.
  • the latter is for example keyed to the tree 80, so that there is no possibility of angular offset between pulley 82 and tree 80.
  • the two other pulleys of tree 80 they are each fitted with a clutch so that they only drive belts 72 and / or 76 when it is necessary to move the arm 8 and / or to exert an effort on him.
  • the device shown in Figure 5 is all quite similar to that shown in Figure 4 and which has just been described. The differences are related only to a different orientation of the device which allows move the folding head vertically 2.
  • the motors for vertical movement of the folding head 2 and for the movement of the arm 8 are located in the lower part of the frame 24, which allows to have a particularly compact configuration.
  • the drive motor could be placed on the shaft 80, but in this case a reducer would be necessary to obtain sufficient torque.
  • the solution restraint allows the reduction by through two toothed pulleys, a rise in motor shaft outlet, the other on shaft 80 and is less expensive than using a geared motor.
  • Figure 6 shows in section and so schematic a punching machine whose tool, a punch, is driven by a device according to the invention, different from that of Figure 3.
  • the device comprises a first crankshaft 142, a connecting rod 116 and a second crankshaft 152.
  • Each crankshaft is fitted with a pulley 144,146 toothed, rotated by a belt notched 148.
  • the first crankshaft 142 is mounted on a frame fixed 124 of the punching machine. Two bearings, defining a first axis 128, are made in the frame 124. In each of these bearings is a crankpin 150 of the crankshaft 142. These two crank pins 150 are connected between them by a bearing 114, whose axis 130 corresponds to first connecting rod connecting rod. This connecting axis 130 is offset from the axis 128 of the crank pins 150 but is parallel to this.
  • the connecting rod 116 is mounted on the bearing 114 by one of its ends. Its other end is mounted on a connecting rod bearing 154, of axis 134, of the second crankshaft 152.
  • the latter also includes two 156 coaxial crank pins, defining a crankshaft axis 140.
  • the two crankpins 156 are mounted in a bore made in punch 102. The latter presents to one of its ends a fork shape, allowing to accommodate one end of the connecting rod 116 between the branches of the fork.
  • the toothed pulley 144 of the first crankshaft 142 is mounted on the first connecting rod connecting axis 130, while the second toothed pulley 146 of the second crankshaft is mounted on the second connecting axis of connecting rod 134.
  • the two toothed pulleys 144,146 are in a same plan. They are driven by the same belt 148 notched.
  • a third toothed pulley 158 mounted in the same plane as the other two pulleys 144,146, is directly rotated ( Figures 9 to 12) or indirectly ( Figure 6) by an electric motor 160 fixed on the frame 124.
  • This motor 160 is fixed on the axis of the third pulley 158 or even another pulley in connection with this third pulley. So the engine can be multiplied at will.
  • Figures 9 to 12 illustrate the operation of the device shown in section in Figures 7 and 8.
  • the arrows show the direction of rotation of the toothed pulleys 144, 146 and 158. They rotate in the clockwise.
  • Figure 9 corresponds to the position of the figure 7.
  • the punch 102 which is guided relative to the frame 124 in a bearing 162, is then in its position retracted.
  • first pulley 144 When the first pulley 144 turns, it drives the first crankshaft 142 in rotation. This one rotates around its axis 128 defined by its crankpins 150. The connecting axis of the connecting rod 130 then rotates around the axis of rotation 128 of the crankshaft. The connecting rod 116 is driven by this downward movement, driving with it the tool 102, the second crankshaft 152 and the pulley 146 associated.
  • the second pulley 146 rotates also, driving the second rotating crankshaft around the connecting axis 134.
  • This rotation induces a rotation of crankshaft 140 around the axis of link 134, thereby removing the tool 102 from the connecting rod 116.
  • the pulleys 144 and 146 have the same number teeth and rotate synchronously. Punch 102 gradually comes out of frame 124 from the position shown in Figures 7 and 9 to the position of the Figures 8 and 11. Between these two positions, the pulleys 144 and 146 have rotated 180 °.
  • Figure 10 shows the relative positions of the different parts of the device after a 90 ° rotation from the initial position ( Figures 7 and 9).
  • tool 102 retracts in the frame 124.
  • the tool 102 approaches the connecting rod 116 and the latter is withdrawn upwards.
  • Figure 12 shows a position intermediate between these two positions.
  • the distance between the toothed pulleys 144 and 146 varies during operation. Because of this, the length of the toothed belt 148 varies. However, the movement of the pulleys is limited and relatively small. The elasticity of the belt thus absorbs the length difference due to the movement of the pulleys 144 and 146.
  • FIG 2 shows a different application of a device as described above with reference to Figures 6 to 12.
  • This device 101 controls the movement horizontal of the folding head 2.
  • Figure 1 shows two devices similar to that of Figure 6 driven by a single motor. This last drives two pulleys equivalent to the third pulley 158 in figure 6.
  • FIGS. 13 to 15 show another form of realization applied to a folder.
  • elements similar to those of FIGS. 1 to 5 carry the same reference increased by 200.
  • Figure 13 shows in section a device according to the invention, allowing a head to be moved vertically folding 202 of a folder.
  • the latter is intended folding a sheet 204, held between two blank clamps 206.
  • One of the 206 blank clamps is movable so that it can release the sheet 204 and is mounted at the end of an arm pivoting 208.
  • a device according to the invention controls the movement of this arm 208.
  • the folding head 202 is moved using two devices according to the invention, one for its vertical displacement, the other for its displacement horizontal ( Figure 14).
  • the movement device 101 horizontal has been described above.
  • Figure 15 shows in section the device according to the invention allowing the head to be moved vertically folding device 202. This device is similar to that for moving the blank holder 206.
  • the device comprises a lever 278 connected by one of its ends to the folding head 202 (or to the blank holder 206).
  • the other end of lever 278 is mounted via an axis connecting finger 214 230 on a cylindrical connecting shaft 216, of axis 228.
  • the cylindrical connecting shaft 216 rotates around from its axis, it carries with it the connecting finger 214 through a workout 288 keyed onto the shaft 216.
  • 290 bearings allow a relative rotation between the connecting finger 214 and the drive piece 288.
  • the cylindrical connecting shaft 216 is mounted on bearings 292 defining first bearings. These bearings are mounted in a bore 294 with axis 234. This axis 234 coincides with axis 228 of the cylindrical shaft of connection 216.
  • the bore 294 is produced in a wheel tooth 296 with axis 240, parallel to axis 234 of the bore 294, but offset from it.
  • the gear wheel 296 therefore has an eccentric. She is guided in rotation using a second bearing defined by ball bearings 298.
  • ball bearings are mounted in a fixed bore relative to the frame 224 of the folder.
  • a pinion 300 driven by a motor not shown in the drawing, is mounted on the frame 224 of the folder and meshes with the gear 296.
  • FIG 13 two springs 302 and 304 have been represented.
  • the first spring 302 is disposed between the arm 208 and the frame 224 of the folder.
  • the stiffness of the spring 302 and its compression are determined in such a way so that the force exerted by this spring 302 compensates substantially the weight of the arm 208.
  • the power of the motor driving lever 278 can be substantially reduced compared to a machine as shown for example in Figure 4 and not having such a spring.
  • the second spring 304 has a similar role. It is mounted between the folding head 202 and the frame 224 of the machine. Like the spring 302 for the arm 208, it allows to balance the weight of the folding head 202.
  • the motor of training corresponding to the displacement of the head of folding 202 without exerting any effort can therefore be a motor lower power, compared to a folder of this type but without spring.
  • the wheel toothed 296 When it comes to exerting an effort, the wheel toothed 296 is driven by the pinion 300. The toothed wheel 296 then pivots around the axis 240. The axis 234 of bore 294 therefore moves in the plane of the figure 15, due to its eccentricity. This movement is retransmitted via the cylindrical axis of link 216 and link finger 214 to lever 278. More the force to be exerted at the level of the folding head 202 or of the 206 hold down, the greater the eccentricity level of the toothed wheel 296 is low. So with a electric motor, it is possible to exert a force important.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Manipulator (AREA)
  • Press Drives And Press Lines (AREA)
  • Support Of The Bearing (AREA)

Claims (14)

  1. Vorrichtung zum Verlagern eines Teils einer Maschine (2, 102, 202) und Ausüben einer Kraft am Wegende, umfassend:
    eine zum Verlagern des Teils der Maschine ausgelegte erste Gruppe (10, 12, 14; 142, 144; 214, 288),
    eine zur Drehung in wenigstens einem zweiten Lager angetriebene zweite Gruppe (18, 22; 146, 152; 292, 296),
    ein Verbindungsstück (16; 64; 116; 216), das einerseits mittels einer ersten Verbindungsachse (30; 130; 230) an der ersten Gruppe und andererseits mittels einer zweiten Verbindungsachse (34; 134; 234) an der zweiten Gruppe montiert ist,
    wobei die durch das wenigstens eine zweite Lager definierte Achse (40; 140; 240) bezüglich der zweiten Verbindungsachse (34; 134; 234) versetzt ist,
    dadurch gekennzeichnet, daß die erste Gruppe (10, 12, 14; 142, 144; 214, 288) eine zur Drehung angetriebene, in wenigstens einem ersten Lager montierte Gruppe ist, und daß die durch die ersten Lager (28; 128; 228) definierte Achse bezüglich der ersten Verbindungsachse (30; 130; 230) versetzt ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die erste Gruppe eine zur Drehung angetriebene Welle (26) umfaßt, an deren Ende eine Platte (12) montiert ist, die einen versetzten Zapfen (14) aufweist, der als erste Verbindungsachse (30) für das Verbindungsstück (16) dient, und daß die zweite Gruppe durch eine Kurbel (18) gebildet ist, die zwei Stangenlager (36) aufweist, welche die Verbindungsachse (34) des Verbindungsstücks definieren, sowie durch ein Kurbellager (38), an dem der zu verlagernde Teil der Maschine (2) montiert ist.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die erste bzw. die zweite Gruppe durch eine Kurbel (142, 152) gebildet ist, die zwei Lager aufweist, welche das erste (150) bzw. das zweite (156) Lager bilden sowie durch ein zwischen diesen zwei Lagern angeordnetes Lager (114, 154), dessen Achse der Verbindungsachse des Verbindungsstücks entspricht,
    daß die ersten Lager (150) in einem festen Maschinenrahmen (124) der Maschine montiert sind, und
    daß die zweiten Lager (156) mit dem zu verlagernden Teil (2) der Maschine fest verbunden sind.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die erste Gruppe und/oder die zweite Gruppe an der Ausgangswelle (26) eines Elektromotors montiert ist.
  5. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die erste Gruppe und/oder die zweite Gruppe zur Drehung durch ein Rad (144, 146) angetrieben wird, über welches ein Riemen (148) verläuft, vorzugsweise ein Zahnriemen.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die erste und die zweite Gruppe jeweils mit einem Rad (144, 146) ausgestattet sind, wobei die zwei Räder parallel zu einem durch einen Motor (160) angetriebenen dritten Rad (158) sind und wobei ein einziger Zahnriemen (148) die Drehbewegung des dritten Rads auf die zwei ersten überträgt.
  7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Verbindungselement (64) um eine Welle (80) mit fester Achse schwenkbar montiert ist, wobei die Verbindungsachsen (30; 34) und die feste Achse der Welle (80) ein Dreieck bilden, und
    daß die zweiten Lager am Ende einer Stange (66) vorgesehen sind, deren anderes Ende um ein festes drittes Lager (68) schwenkbar montiert ist.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Welle (80) mit fester Achse zur Drehung angetrieben ist und zwei Zahnräder umfaßt, die jeweils mit einer Kupplung ausgestattet sind, und daß eines der Räder (74) mittels eines ersten Zahnriemens (76) mit der ersten Gruppe verbunden ist, wobei das andere (70) mittels eines zweiten Zahnriemens (72) mit der zweiten Gruppe verbunden ist.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Welle mit fester Achse (80) ein drittes Rad (82) umfaßt, das dazu ausgelegt ist, den Drehantrieb der Welle ausgehend von einem Motor mit zur festen Achse der Welle paralleler fester Achse mittels eines dritten Zahnriemens (84) zu ermöglichen.
  10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die erste Gruppe einen Hebel (278) umfaßt, der einerseits mit dem zu verlagernden Teil der Maschine (202, 206) und andererseits mit einer zylindrischen Welle (216) mittels einer ersten Verbindungsachse (230) verbunden ist, die bezüglich der zylindrischen Welle (216) parallel, jedoch versetzt ist,
    daß die zweite Gruppe ein zur Drehung um die durch die zweiten Lager definierte Achse (240) angetriebenes Stück (296) umfaßt, wobei dieses Stück eine Bohrung (294) aufweist, deren Achse parallel, jedoch versetzt bezüglich der Achse (240) ist, welche durch die zweiten Lager definiert ist, und das als Aufnahme für Rollen (292) dient, und
    daß die Rollen (292) der Aufnahme (294) der zweiten Gruppe die zylindrische Welle (216) aufnehmen, die den Hebel (278) antreibt und das Verbindungsstück bildet.
  11. Zum Falten eines Blechs ausgelegte Werkzeugmaschine, bei der ein Blech (4; 204) zwischen Blechhaltern (6; 206) gehalten ist und die einen Faltkopf (2; 202) zum Falten des zwischen den Blechhaltern gehaltenen Blechs umfaßt, dadurch gekennzeichnet, daß die Bewegung des Faltkopfs durch wenigstens eine Vorrichtung nach einem der Ansprüche 1 bis 10 gesteuert ist.
  12. Zum Falten eines Blechs ausgelegte Werkzeugmaschine, bei der ein Blech (4; 204) zwischen Blechhaltern (6; 206) gehalten ist und die einen Faltkopf (2; 202) zum Falten des zwischen den Blechhaltern gehaltenen Blechs umfaßt, dadurch gekennzeichnet, daß die Annäherungs- und Greifbewegung der Blechhalter durch eine Vorrichtung nach einem der Ansprüche 1 bis 10 gesteuert ist.
  13. Einen Maschinenrahmen (224) umfassende Werkzeugmaschine nach einem der Ansprüche 11 oder 12, dadurch gekennzeichnet, daß eine Feder (302, 304) zwischen dem Maschinenrahmen und einem zu verlagernden Stück angeordnet ist, insbesondere dem Faltkopf oder den Blechhaltern.
  14. Zum Stanzen eines Blechs ausgelegte Werkzeugmaschine, umfassend ein Stanzwerkzeug (102), dadurch gekennzeichnet, daß die Steuerung des Stanzwerkzeugs mittels einer Vorrichtung nach einem der Ansprüche 1 bis 10 erfolgt.
EP97931892A 1996-07-05 1997-07-07 Vorrichtung zum verschieben eines teils einer maschine und ausüben einer kraft am bewegungsende Expired - Lifetime EP0918580B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9608639 1996-07-05
FR9608639A FR2750625B1 (fr) 1996-07-05 1996-07-05 Dispositif pour deplacer une partie d'une machine et exercer un effort en fin de course
PCT/FR1997/001226 WO1998001244A1 (fr) 1996-07-05 1997-07-07 Dispositif pour deplacer une partie d'une machine et exercer un effort en fin de course

Publications (2)

Publication Number Publication Date
EP0918580A1 EP0918580A1 (de) 1999-06-02
EP0918580B1 true EP0918580B1 (de) 2000-08-16

Family

ID=9493921

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Application Number Title Priority Date Filing Date
EP97931892A Expired - Lifetime EP0918580B1 (de) 1996-07-05 1997-07-07 Vorrichtung zum verschieben eines teils einer maschine und ausüben einer kraft am bewegungsende

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EP (1) EP0918580B1 (de)
AT (1) ATE195447T1 (de)
DE (1) DE69702860T2 (de)
FR (1) FR2750625B1 (de)
WO (1) WO1998001244A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3085503U (ja) * 2001-10-22 2002-05-10 株式会社サルバニーニジャパン プログラム化した一定の曲げ角度でのシート曲げのための温度補償を有する高効率機械
FR2876926B1 (fr) * 2004-10-21 2008-03-14 Jean Claude Jeandeaud Dispositif et installation de pliage d'un flan
EP1777017A1 (de) 2005-10-21 2007-04-25 Arcelor Steel Service Centres Biegevorrichtung mit unabhängigen positiv und negativ arbeitenden Biegearmen
WO2008029421A1 (en) * 2006-09-04 2008-03-13 Finn-Power Oy A kinematic system for clamping semifinished products by means of pressing for sheet metal shaping panelling machines
EP3135393B1 (de) * 2015-08-26 2018-03-14 CIDAN Machinery Sweden AB Exzentertriebwerk für eine falzmaschine
SE543695C2 (en) * 2019-10-15 2021-06-08 Cidan Machinery Sweden Ab A folding machine for folding sheet shaped material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795168A (en) * 1973-01-04 1974-03-05 Gulf & Western Ind Prod Co Low-impact four-bar press
AT363756B (de) * 1979-06-20 1981-08-25 Krems Huette Gmbh Biegemaschine
IT1222347B (it) * 1987-07-03 1990-09-05 Antonio Codatto Pressa piegatrice per lamiere
DE9404308U1 (de) * 1994-03-15 1994-07-28 Blaz, Santic, 86159 Augsburg Biegemaschine zum rutschlosen Biegebearbeiten von Blechtafeln

Also Published As

Publication number Publication date
DE69702860D1 (de) 2000-09-21
ATE195447T1 (de) 2000-09-15
WO1998001244A1 (fr) 1998-01-15
DE69702860T2 (de) 2001-03-01
EP0918580A1 (de) 1999-06-02
FR2750625A1 (fr) 1998-01-09
FR2750625B1 (fr) 1999-01-29

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