EP3645188B1 - Procédé de fabrication d'une pièce pliée et machine de pliage pour la mise en oeuvre du procédé - Google Patents

Procédé de fabrication d'une pièce pliée et machine de pliage pour la mise en oeuvre du procédé Download PDF

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Publication number
EP3645188B1
EP3645188B1 EP18733542.7A EP18733542A EP3645188B1 EP 3645188 B1 EP3645188 B1 EP 3645188B1 EP 18733542 A EP18733542 A EP 18733542A EP 3645188 B1 EP3645188 B1 EP 3645188B1
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EP
European Patent Office
Prior art keywords
bending
axis
cutting
drive
bending head
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EP18733542.7A
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German (de)
English (en)
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EP3645188A1 (fr
Inventor
Jörg Möck
Frank Weiblen
Harry Schweikardt
Ralf Schneider
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Wafios AG
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Wafios AG
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Publication of EP3645188A1 publication Critical patent/EP3645188A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/006—Bending wire other than coiling; Straightening wire in 3D with means to rotate the tools about the wire axis

Definitions

  • the invention relates to a method for producing a bent part according to the preamble of claim 1 and to a bending machine set up to carry out the method according to the preamble of claim 2.
  • the preferred field of application is the bending of wire or tubes (see e.g. FR 2 749 199 ).
  • the movements of the machine axes of a bending machine are controlled in a coordinated manner with the help of a control device in order to work on the workpiece, for example a wire, a pipe, a line or a rod made of round, flat or profiled material, to produce one or more permanent bends by plastic deformation.
  • a control device for example a wire, a pipe, a line or a rod made of round, flat or profiled material, to produce one or more permanent bends by plastic deformation.
  • the workpiece is deformed with the help of a bending machine that has a bending head that has a rotatable bending tool for engaging a section of the workpiece that is to be bent, whose orientation in relation to a section that is not to be bent is to be permanently changed by the bending operation by means of plastic deformation.
  • a tool which is stationary during the bending operation and which is often referred to as a bending mandrel can also be provided on the bending head.
  • the rotatable bending tool can be rotated about a bending axis with the aid of a bending drive controlled by a control device.
  • the bending axis is the axis of rotation of the rotatable bending tool of the bending head.
  • the bending plane runs perpendicular to the bending axis.
  • the bending operation creates a flat bend on the workpiece parallel to the bending plane.
  • the rotatable bending tool can, for example, have a bending pin which, for bending, is placed on one side of the section to be bent at a position at a distance from the bending axis. Bending pins are used, for example, for wire bending.
  • a workpiece section to be provided with a bend is first brought into an initial position in the area of engagement of the bending head.
  • a workpiece section of suitable length from a longer workpiece supply can be moved or fed into the starting position parallel to a feed direction by means of a feed operation. This procedure is common for wire bending and can also be used when bending thinner tubes.
  • the rotatable bending tool is brought into contact with the portion to be bent.
  • this can be done, for example, by placing a bending pin on one side of the section to be bent.
  • the outer contour of a bending mandrel can stabilize the inner contour of the bend and precisely specify its radius. A bending operation without a bending form is also possible.
  • the bending head is usually first moved from its bending position (working position in which a bending operation can be carried out) to a transfer position by means of a retraction movement parallel to a bending head axis Brought into engagement with the workpiece.
  • the workpiece can then be rotated around the feed axis, e.g. to change the bending plane, before the bending head is brought back into engagement with the workpiece by a feed movement parallel to the bending head axis from the transfer position.
  • a temporary retraction of the bending head into the transfer position is usually also provided if the bending direction is to be reversed (change from left bending to right bending or vice versa) in order to be able to turn the bending pin on the opposite side of the workpiece before the bending head is moved back into the working position (bending position) to begin the next bending process.
  • the machine axis that causes the feed movements or retraction movements parallel to the bending head axis is referred to in this application as the Z axis.
  • the associated drive which is controlled via the control device, is referred to as the Z-drive.
  • the bending head axis, and thus the direction of movement of the bending head's movements caused by the Z-drive, generally run perpendicular to the direction in which the fed, not yet bent workpiece is oriented, i.e. perpendicular to the feed direction.
  • the finished bent bent part is cut from the workpiece by means of a cutting device in a cutting operation supplied workpiece material separated.
  • the cutting devices of the conventional bending machines considered here are devices which are separate from the bending head and which have the tools (cutting tools) required for cutting through the workpiece and provided for gripping the workpiece.
  • a cutting device usually has two cutting tools which are movable relative to one another in order to carry out a cutting operation. At least one of the cutting tools is mounted on a movable component of the cutting device, and the other cutting tool that works together with it can be fixed to the machine or can also be movably arranged.
  • the cutting device can have a first knife that is fixed to the machine and a second knife that is movable relative thereto, the knives shearing or severing the bent part from the supplied material in a kind of shearing movement during the cutting operation. Since none of the cutting tools is attached to the bending head, there are degrees of freedom with regard to the structural design and arrangement of the cutting device.
  • Such conventional bending machines have a separate machine axis and an associated drive which is activated by the control device when the cutting operation is to be carried out.
  • the drive can work electrically or pneumatically or hydraulically. At least one movable component of the cutting direction is moved via this drive.
  • the invention provides a method with the features of claim 1 and a bending machine with the features of claim 2.
  • Advantageous further developments are given in the dependent claims. The wording of all claims is incorporated into the content of the description by reference.
  • the method can be carried out automatically using a bending machine.
  • the elongated workpiece or a section thereof is fed to a bending unit of the bending machine.
  • the workpiece is preferably withdrawn from a supply of material by means of a feed device and fed to the bending unit of the bending machine.
  • the bending unit has a bending head that can perform several different work movements.
  • the bending head driven by a Z-drive, can be moved linearly parallel to a bending head axis.
  • the bending head has a bending tool which can be rotated around the bending axis with the aid of a bending drive.
  • the bending axis usually coincides with the bending head axis, so that the bending tool is rotated around the bending head axis (centric bending).
  • the bending axis can also be a bending axis that can be positioned or positioned offset parallel to the bending head axis, so that eccentric bending is possible.
  • the fed section of the workpiece is formed into a two- or three-dimensional bent part with the aid of working movements of the bending head. Every single bending operation caused by the rotation of the bending tool creates a flat bend.
  • a bend can be produced in a different plane, so that a three-dimensionally bent part can be produced.
  • the cutting device is a device that is separate from the bending head and has the tools (cutting tool) required for cutting through the workpiece and provided for gripping the workpiece.
  • a cutting device may have two cutting tools which are movable relative to one another in order to perform a cutting operation. At least one of the cutting tools is mounted on a movable component of the cutting device.
  • the other cutting tool that works with it can be mounted fixed to the machine or can also be arranged to be movable. Since none of the cutting tools is attached to the bending head in the case of a cutting device which is separate from the bending head, there are degrees of freedom with regard to the structural design and arrangement of the cutting device in relation to the bending head.
  • the transmission device the cutting forces that can be achieved by the cutting device can be optimized.
  • a special feature of the claimed method is that a working movement of the bending head parallel to the bending head axis causes the cutting operation by means of a transmission device or actuates the cutting device by means of a transmission device.
  • the Z-drive of the bending head is used as a drive for a movable component of the cutting device used to perform the cutting operation.
  • an aspect of the invention can also be formulated in such a way that the cutting device is actuated by a working movement of the bending head or one of its components which goes beyond the usual working movement. This actuation is not effected directly, but with the aid of a transmission device, i.e. indirectly or indirectly.
  • this concept can be implemented in a bending machine in such a way that a movable component of the cutting device, which is separate from the bending head, is coupled by means of a transmission device to a drive of the bending head for the transmission of forces and torques, so that the cutting device via this drive by means of the transmission device or can be actuated mediated via the transmission device.
  • the coupled drive is preferably the Z-drive, which is responsible for the movement of the bending head parallel to the bending head axis.
  • the sterndrive used thereby has a double function.
  • the bending drive could be coupled to the cutting device via a transmission device.
  • the cutting device can thus in principle also be coupled to the bending drive (i.e. the drive of the rotatable bending tool) for the transmission of forces and moments in order to carry out the cutting operation.
  • a working movement of the bending head or one of its components actuates the cutting device by means of a transmission device.
  • the working movement is a working movement of the entire bending head (parallel to the bending head axis).
  • a separate drive for the cutting device can be dispensed with, so that the cutting device does not need a drive that can be controlled separately by the control device.
  • a separate, dedicated drive for the cutting device such a bending machine can be manufactured significantly more cost-effectively than conventional bending machines with a separate drive for the cutting device.
  • installation space can be saved, as a result of which an overall more compact arrangement can be realized.
  • the invention is particularly simple and robust because the cutting device is actuated exclusively by a working movement of the bending head parallel to the bending head axis, so that only the Z-drive has a double function.
  • the movable component of the cutting device that can be moved with the aid of the drive of the bending head has a lever that can be rotated about a lever axis.
  • This lever can also be referred to as a cutting lever.
  • the lever can serve as a carrier for a movable knife of the cutting device.
  • the lever can be designed as a two-armed lever with lever arms of different lengths. The lever ratios are preferably selected so that a relatively large working stroke of the drive coupled therewith (e.g. the drive of the bending head) causes a relatively smaller movement of the knife of the cutting device carried by the movable component.
  • the coupled machine axis of the bending head is less stressed by the cutting forces occurring during the cutting operation than with a direct coupling without translation, which is also possible.
  • high cutting forces can be generated.
  • the transmission device can, for example, have intermeshing gears or other machine elements suitable for constructing a mechanical transmission device.
  • the transmission device is preferably designed such that a linear movement of the bending head over a first stroke section parallel to the bending head axis between a bending position and a transfer position does not cause any movement of the movable component of the cutting device coupled to the Z drive. It can thereby be achieved that the cutting device is practically decoupled from the Z-drive during the usual bending operation.
  • "Normal bending operation” refers to those working movements of the bending head that usually take place between successive bends when bending the workpiece and when moving the bending head or the bending tool.
  • Multi-stage tools are also conceivable, in which e.g. bending mandrels and / or bending pins have several levels with different radii and can be brought onto or into the working plane using the Z-axis. These changes in bending level should also be able to be carried out in a way that is neutral in terms of cutting movements.
  • the transmission device has a control curve which converts a uniform movement of the bending head parallel to the bending head axis into a non-uniform movement of the movable component of the cutting device coupled to the Z drive.
  • the control cam has a first cam section which is oriented in such a way that a linear movement of the bending head parallel to the bending head axis over a first stroke section between the bending position and the transfer position does not cause any movement of the movable head coupled to the Z-drive Component of the cutting device and that the first curve section is followed by a second curve section, which is oriented obliquely to the first curve section in such a way that a further linear movement of the bending head parallel to the bending head axis beyond the transfer position also results in a movement of the movable head coupled to the Z-drive Component of the cutter caused.
  • the advantageous kinematics can be implemented in that an angular groove is formed on a carriage of the bending head that is movable parallel to the bending head axis, which the Forms control cam, and that a cam roller is attached to a lever arm of the lever, which engages in the groove.
  • a reverse arrangement with the groove in the lever and a cam roller on a slide of the bending head is also possible.
  • FIG. 1 shows an oblique perspective front view of the single-head bending machine.
  • FIG. 2 shows a plan view of a section of the bending machine from FIG Fig. 1 in the direction parallel to the bending head axis of your bending head.
  • the bending machine 100 is designed as a wire bending machine to provide a section of an elongated workpiece 110 in the form of a wire with a preferably round cross-section with one or more bends in one or more bending planes by cold forming. Wires with a flat or profiled cross-section can also be bent.
  • the bending machine 100 has a right-angled machine coordinate system MK marked with lowercase letters x, y and z with a vertical z-axis and horizontal x- and y-axes.
  • the x-axis runs parallel to the workpiece axis 112 of the not yet bent workpiece. From the coordinate axes A distinction must be made between the controlled driven machine axes, which are each designated with capital letters (e.g. A, C, Z etc.).
  • All drives for the machine axes are electrically connected to a control device (not shown) which contains, among other things, the power supply for the drives, a central computer unit and storage units. With the help of the control software active in the control device, the movements of all machine axes are variably controlled in order to generate a coordinated movement of the elements involved in the bending process.
  • a display and operating unit 130 connected to the control device serves as an interface to the machine operator.
  • an initially straight workpiece section is brought into an initial position in the area of engagement of the bending head 180.
  • a longer work piece supply (coil) is used here. This is the case in the illustrated embodiment.
  • the bending machine has an in Fig. 1 Invisible feed device equipped with feed rollers, which can draw in or feed successive wire sections of a wire with a numerically controlled feed rate profile coming from a wire supply and possibly guided by an optional straightening unit in the horizontal direction (parallel to the x-direction) into the area of the bending head 180 .
  • the wire is passed through a tubular wire guide on the exit side and exits in the horizontal feed direction.
  • the feed (the pull-in movement) is stopped when the wire reaches an initial position.
  • the linear machine axis for the feed is called the C-axis, it has a motor, not shown.
  • the wire emerges from the front end of the wire guide when it is fed, then runs through the area of a cutting device 150, which will be explained later, into the engagement area of the bending head 180.
  • the cutting device 150 is arranged between the feed device and the bending head.
  • a rotation of the workpiece around the workpiece longitudinal axis is generated via the rotary drive of the A-axis.
  • the intake device as a whole can be rotated together with the straightening unit about an axis parallel to the x-axis.
  • the bending head 180 has an inner tool part 182 which is stationary during the bending process and which can be seen in plan view (cf. Fig. 2 ) has a cylindrical outer contour.
  • This tool part carries several exchangeable bending mandrels of different diameters on its upper side, one of which (e.g. bending mandrel 183) can be brought into a working position near the workpiece axis in order to serve as an inner support for the workpiece section during the bending process.
  • the outer diameter of the bending mandrel 183 used defines the bending radius of the bend to be produced, that is to say the radius of curvature of the bend.
  • a separate output 187 (servomotor and gear) is provided for rotating the inner tool part 182 about the bending head axis 185 to switch between different bending mandrels.
  • the corresponding machine axis is also referred to as the mandrel axis.
  • the bending head 180 has a bending tool 184 which is rotatable with respect to the inner tool part and which is provided for laterally engaging a section of the workpiece material that is to be bent over.
  • the bending tool 184 has a bending pin 186 on its upper side and can be rotated around a bending axis by means of a bending drive 189 (servo motor and gear) controlled by the control device, which axis here coincides with the bending head axis 185.
  • the orientation of the bending axis defines the orientation of the bending plane, which is orthogonal to the bending axis and contains the workpiece axis 112.
  • the bending unit with the bending head 180 can be pivoted as a whole about an axis running parallel to the x-axis, so that the bending axis 185 can optionally be aligned vertically (parallel to the z-direction) or at an angle to it in an inclined position.
  • a manual or motorized swivel device is also possible.
  • the bending unit is pivoted as a whole, i.e. including the bending axis and the Z-axis.
  • the tool elements of the bending head are mounted in a solid carrier 193 which, in the case of pivotable variants, can be guided in circular arc-shaped guides on the front wall of the machine base 102.
  • a metal table top 192 of a support table 190 is mounted on the upper side of the carrier, the flat upper side of which lies slightly below the level of the workpiece axis 112 in every position of the bending head.
  • the support table serves as a support for the sections of a bent part protruding beyond the bending head and as a slide via which the finished bent parts can slide laterally into a collecting container after being separated from the material supply.
  • FIG. 2 shows a plan view of a section of the bending machine Fig. 1 in the direction parallel to the bending head axis 185 of the bending head 180.
  • the cutting device 150 which is located between the (in Fig. 2 not shown) feed device for the workpiece and the bending head 180 is arranged.
  • the Figures 3 to 5 show views of the bending machine in the area of the bending head 180 and the cutting device 150 in a direction parallel to the x-axis of the machine coordinate system or parallel to the feed direction of the workpiece to be bent.
  • the cutting device 150 is a device which is separate from the bending head 180 and which has the tools (cutting tools) required for severing the workpiece.
  • the cutting tools are those components of the cutting device which are provided for direct contact with the workpiece or for engaging the workpiece. No cutting device tools are attached to the bending head.
  • Fig. 3 shows the components of the bending machine in a first position, which is also referred to as the bending position.
  • the bending head 180 In this first position, the bending head 180 is in its end position closest to the workpiece, in which the bending pin 186 of the bending tool is inserted into the workpiece plane in such a way that a rotation of the bending tool can cause the workpiece to bend.
  • the cutting device 150 is in an open position without cutting engagement on the workpiece. In the open position, workpiece material can be fed in in the feed direction (parallel to the x-axis or to the workpiece longitudinal axis 112).
  • Fig. 4 shows the same components in a second position, which is also referred to here as the transfer position.
  • the bending head 180 is in a slightly retracted position compared to the bending position (e.g. by approx. 10 mm to approx. 20 mm, depending on the wire diameter, possibly more or less) Attack on the workpiece enables.
  • the cutting device is still in an open position.
  • FIG. 3 shows a configuration or position in which the bending head 180 is in its lower position, which is most withdrawn from the workpiece.
  • the bending head 180 or its components are mounted on a linearly displaceable slide 200, which is also referred to as a bending slide.
  • the direction of travel of the slide runs perpendicular to the feed direction of the wire, i.e. perpendicular to the x-direction of the machine coordinate system.
  • the orientation of the bending carriage defines the orientation of the bending head axis 185 in relation to the feed direction of the workpiece.
  • the bending head as a whole can be moved linearly parallel to the bending head axis 185.
  • the numerically controlled machine axis that causes this linear movement of the bending head parallel to the bending head axis is referred to here as the Z-axis.
  • the associated drive which is referred to here as a Z-drive, comprises a crank drive 210, which can be rotated about an axis of rotation running parallel to the x-axis.
  • the slide 200 is coupled to the crank mechanism 210 of the Z-drive via a transmission rod 220.
  • a plate-shaped section 205 is attached on the side of the lever 160, in which an angular groove or groove curve 165 is incorporated.
  • the groove also referred to as a control groove, can be divided into a first section 165-1 aligned parallel to the bending head axis 185 and a second section 165-2 which is inclined with respect to the first section or the bending head axis.
  • the first section and the second section are each essentially straight and enclose an acute angle of approximately 20 ° to 40 ° to one another.
  • the second section 165-2 is more than twice as long as the first section 165-1.
  • the cutting device 150 is constructed in such a way that a finished bent part can be severed from the supplied workpiece section in a cutting operation in the manner of a shear cut.
  • a first knife 152 of the cutting device 150 is fixed to the machine with the aid of an adjustable knife carrier, that is to say fixedly mounted in relation to the machine base of the bending machine.
  • the first knife 152 cooperates with a second knife 154, which is adjustably mounted on a movable component 160 of the cutting device.
  • the interchangeable knives 152, 154 are the cutting tools of the cutting device 150.
  • the cutting gap 155 which defines the parting plane, is located between the knives.
  • the shear cut is carried out when the second knife 154 moves with respect to the first knife 152 essentially parallel to the xy plane, approximately in the y direction (on an arc of a circle).
  • the movable component 160 which carries the second knife 154, is a lever 160 (also called cutting lever 160) which is mounted pivotably about a machine-fixed axis of rotation 162 running parallel to the x-direction.
  • the support structure for the second knife 154 is located in the vicinity of the axis of rotation 162 on the upper side of the lever 160.
  • a longer, angled lever arm 164 protrudes downward, essentially parallel to or at an acute angle to the bending head axis 185.
  • a cam roller 230 is rotatably mounted on the end section of the lever 160 which faces away from the axis of rotation 162. The cam roller 230 is guided in the angled groove 165 (groove cam, control groove) on the bending slide.
  • the cam roller 230 attached to the lever 160 and the angular groove 165 on the bending slide 200 are essential components of a fully mechanical transmission device 250, which is a movable component of the cutting device 150, namely the lever 160 with the second knife 154 attached to it, with the Z-drive of the bending head 180 for the transmission of forces and moments is coupled in such a way that the cutting device 150 can only be actuated via the Z-drive.
  • the cutting device 150 and the bending head 180 are thus actuated by one and the same drive (the Z-drive), so that a separate drive for the cutting device is not required.
  • the base part of the cutting device 150 namely a so-called cutting support, connects the cutting device 150 to the machine body of the bending machine and carries the axis of rotation 162 for the lever (cutting lever) 160 as well as the machine-mounted first knife 152.
  • the lever (cutting lever) 160 is rotatable on the Cut carrier deposited.
  • the lever 160 is articulated via the cam roller 230 attached to the free end of the lever.
  • the cam roller 230 runs in an angular groove curve 165.
  • the groove curve 165 is attached to the slide 200 (bending slide) and moves up and down with the slide 160 parallel to the bending head axis 185 . This is the working movement of the Z-axis of the drive system of the bending machine.
  • the groove cam 165 has a straight first section 165-1 running parallel to the Z-axis movement and a second section 165-2 running at an angle to the Z-axis movement.
  • the two straight portions or sections of the groove curve are connected via a curve part that runs according to a law of motion.
  • the Z-axis moves the bending head 180 up and down parallel to the bending head axis 185.
  • the Z-axis is driven with a crank, as shown in the drawings, or with a ball screw spindle.
  • the Z-axis can also be driven with any other suitable solution for linear drives.
  • the first position shown is the bending head 180 with respect to the Z-axis in a bending position.
  • the lever 160 (cutting lever) is in the open position for the wire to pass through (see detail 3A).
  • the cutting operation can be initiated.
  • the bending head is moved back to the most retracted position (cutting position) by means of the Z-drive.
  • Fig. 5 shows a situation in which the bending head is in the third position with respect to the Z-axis for cutting the workpiece.
  • the cam roller 230 moves over the transition section between the first section 165-1 and the second section 165-2 into the second section 165-2 and then along the second section.
  • the lever 160 is pivoted further and further outwards during the retraction movement, so that the second knife 154 is displaced relative to the first knife 152 in a cutting movement and the wire is sheared.
  • the cutting lever is in the in Fig. 5 is the maximum deflected position shown, the cutting process is complete.
  • the bending head In order to produce another bending part, the bending head must be moved upwards again by means of the Z-axis, at least to the transfer position, so that the movable knife releases the opening of the fixed knife again.
  • the bending head 180 for relocating the bending tool can be moved up and down with respect to its Z-axis without the lever 160 (cutting lever) moving.
  • the bending part can be bent while the bending head moves in this area.
  • the bending head moves further downwards beyond the transfer position until the workpiece (the wire) is cut.
  • the bending part can then fall out of the bending machine.
  • the falling out of the bending part is favored by the lower position of the bending head 180, i.e. by the very far retracted position of the bending head, because the probability that the bending part will get stuck on the bending head is considerably reduced as a result.
  • the invention thus makes it possible to save a complete machine axis or a complete machine drive for the cutting device. At the same time, the Z-axis can still be moved to move the tool without the cutting lever moving over the coupling.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (7)

  1. Procédé de fabrication d'une pièce pliée à partir d'une pièce à travailler allongée (110), en particulier à partir d'un fil métallique ou d'un tube en matériau rond, plat ou profilé, au moyen d'une machine de pliage (100), dans lequel
    la pièce à travailler (110) est amenée à une unité de pliage de la machine de pliage, l'unité de pliage présentant une tête de pliage (180) qui peut être déplacée en parallèle à un axe de tête de pliage (185) au moyen d'un dispositif d'entraînement en Z et présentant un outil de pliage (184) qui peut être amené à tourner autour d'un axe de pliage au moyen d'un dispositif d'entraînement de pliage ;
    une partie amenée de la pièce à travailler (110) est façonnée en une pièce pliée cintrée en deux ou trois dimensions au moyen de mouvements de travail de la tête de pliage, et
    la pièce pliée finie est détachée du matériau de pièce à travailler amenée au moyen d'un dispositif de coupe (150) séparé de la tête de pliage dans une opération de coupe,
    caractérisé en ce qu'un mouvement de travail de la tête de pliage (180) actionne le dispositif de coupe (150) en parallèle à l'axe de tête de pliage (185) au moyen d'un dispositif de transmission (250), le dispositif de coupe (150) n'étant actionné que par un mouvement de travail de la tête de pliage (180) en parallèle à l'axe de tête de pliage (185).
  2. Machine de pliage (100) pour la fabrication d'une pièce pliée à partir d'une pièce à travailler allongée (110), en particulier d'un fil métallique ou d'un tube en matériau de pièce à travailler rond, plat ou profilé, comprenant
    une unité de pliage,
    qui présente une tête de pliage (180) qui peut être déplacée en parallèle à un axe de tête de pliage (185) au moyen d'un dispositif d'entraînement en Z et présente un outil de pliage (186) qui peut être amené à tourner autour d'un axe de pliage au moyen d'un dispositif d'entraînement de pliage (189), et
    un dispositif de coupe (150) séparé de la tête de pliage (180) pour détacher une pièce pliée finie de la pièce à travailler amenée dans une opération de coupe,
    caractérisée en ce qu'un composant mobile (160) du dispositif de coupe (150) est couplé au moyen d'un dispositif de transmission (250) avec le dispositif d'entraînement en Z pour la transmission de forces et de moments de sorte que le dispositif de coupe peut être actionné par l'intermédiaire du dispositif d'entraînement en Z,
    le composant mobile (160) du dispositif de coupe (150) étant couplé exclusivement au dispositif d'entraînement en Z au moyen du dispositif de transmission (250) de sorte que le dispositif de coupe ne peut être actionné que par l'intermédiaire du dispositif d'entraînement en Z.
  3. Machine de pliage selon la revendication 2, caractérisée en ce que le composant mobile du dispositif de coupe est un levier (160) qui peut être amené à tourner autour d'un axe de levier (162).
  4. Machine de pliage selon la revendication 2 ou 3, caractérisée en ce que le dispositif de transmission (250) est conçu de telle sorte qu'un mouvement linéaire de la tête de pliage (180) sur une première partie de course entre une position de pliage et une position de permutation ne provoque aucun mouvement du composant mobile (160) du dispositif de coupe (150), couplé au dispositif d'entraînement en Z.
  5. Machine de pliage selon l'une quelconque des revendications 2 à 4, caractérisée en ce que le dispositif de transmission (250) présente une came de commande (165) qui convertit un mouvement uniforme de la tête de pliage (180) le long de l'axe de tête de pliage (185) en un mouvement non uniforme du composant mobile (160) du dispositif de coupe (150), couplé au dispositif d'entraînement en Z.
  6. Machine de pliage selon la revendication 5, caractérisée en ce que la came de commande (165) présente une première partie de came (165-1) qui est orientée de telle sorte qu'un mouvement linéaire de la tête de pliage (180) en parallèle à l'axe de tête de pliage (185) sur une première partie de course entre une position de pliage et une position de permutation ne provoque aucun mouvement du composant mobile (160) du dispositif de coupe (150), couplé au dispositif d'entraînement en Z, et que la première partie de came (165-1) est suivie d'une deuxième partie de came (165-2) qui est orientée en oblique par rapport à la première partie de came de telle sorte qu'un autre mouvement linéaire de la tête de pliage (180) en parallèle à l'axe de tête de pliage (185) au-delà de la position de permutation provoque un mouvement du composant mobile (160) du dispositif de coupe, couplé au dispositif d'entraînement en Z.
  7. Machine de pliage selon l'une quelconque des revendications 2 à 6, caractérisée par un dispositif d'alimentation destiné à retirer du matériau de pièce à travailler d'un stock de matériau et à amener le matériau de pièce à travailler à l'unité de pliage, le dispositif de coupe (150) étant disposé entre le dispositif d'alimentation et la tête de pliage (185).
EP18733542.7A 2017-06-26 2018-06-14 Procédé de fabrication d'une pièce pliée et machine de pliage pour la mise en oeuvre du procédé Active EP3645188B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017210714.6A DE102017210714A1 (de) 2017-06-26 2017-06-26 Verfahren zur Herstellung eines Biegeteils und Biegemaschine zur Durchführung des Verfahrens
PCT/EP2018/065864 WO2019001982A1 (fr) 2017-06-26 2018-06-14 Procédé de fabrication d'une pièce pliée et machine de pliage pour la mise en œuvre du procédé

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EP3645188A1 EP3645188A1 (fr) 2020-05-06
EP3645188B1 true EP3645188B1 (fr) 2021-09-29

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US (1) US11179760B2 (fr)
EP (1) EP3645188B1 (fr)
CN (1) CN110958919B (fr)
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WO (1) WO2019001982A1 (fr)

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US11007563B2 (en) * 2016-04-27 2021-05-18 Advanced Orthodontic Solutions Wire bending machine
CN112157907B (zh) * 2020-10-23 2022-08-26 湖北屹安医疗器械有限公司 多喷头高速3d打印系统
CN114643329B (zh) * 2020-12-18 2023-09-08 航天科工惯性技术有限公司 轴向插装元器件引线剪切方法及引线剪切工装
CN113458281B (zh) * 2021-07-06 2023-01-13 深圳市豪锐科技有限公司 一种半导体集成加工用成型机

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH534551A (fr) * 1971-02-02 1973-03-15 Fabro Remigio Del Machine automatique pour fabriquer des étriers d'armatures de béton armé
AT368724B (de) * 1976-05-28 1982-11-10 Hufnagl & Co Rista Draht Biegemaschine fuer draht
AT378700B (de) * 1983-04-18 1985-09-10 Bucher Franz Biegemaschine zur herstellung von abgelaengten, gewinkelten bewehrungsstaeben aus bewehrungsdraht
DE3546449A1 (de) * 1985-03-12 1986-09-25 Alpha Maschinenbau AG, Zürich Biegevorrichtung
FR2749199A1 (fr) 1996-06-03 1997-12-05 Faure Bertrand Equipements Sa Machine de cambrage de fils metalliques
FR2833868B1 (fr) 2001-12-20 2004-03-05 Silfax Machine a cintrer les tubes et son dispositif de cintrage a gauche et/ou a droite
GR1004760B (el) * 2003-11-26 2004-12-16 "���������������������������������-������������������������������"�����.�.�"���������.�."�� Μηχανισμοσακαμψησαβεργασασιδηρουαμπετονατεσσαρωνακατευθυνσεωναμεαδυνατοτηταακοπησαεμπροσακαιαπισωαακρουαα
DE502004007277D1 (de) * 2004-03-26 2008-07-10 Wafios Ag Biegevorrichtung für stab- und rohrförmige Werkstücke
FR2921426B1 (fr) 2007-09-20 2014-02-14 Renault Sas Procede de diagnostic du volet de derivation de l'echangeur dans un systeme de recirculation des gaz d'echappement
DE102009024075B4 (de) 2009-06-05 2012-11-29 Wafios Ag Biegevorrichtung für stabförmige Werkstücke
ITUD20130066A1 (it) 2013-05-20 2014-11-21 Piegatrici Macch Elettr Macchina per la piegatura di prodotti metallici e relativo procedimento di piegatura.
CN105436355B (zh) 2015-12-18 2018-09-07 冯广建 一种线材自动分段剪弯成型机

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Publication number Publication date
US11179760B2 (en) 2021-11-23
WO2019001982A1 (fr) 2019-01-03
US20200130038A1 (en) 2020-04-30
EP3645188A1 (fr) 2020-05-06
CN110958919B (zh) 2022-10-04
CN110958919A (zh) 2020-04-03
DE102017210714A1 (de) 2018-12-27

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