EP3645188A1 - 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

Info

Publication number
EP3645188A1
EP3645188A1 EP18733542.7A EP18733542A EP3645188A1 EP 3645188 A1 EP3645188 A1 EP 3645188A1 EP 18733542 A EP18733542 A EP 18733542A EP 3645188 A1 EP3645188 A1 EP 3645188A1
Authority
EP
European Patent Office
Prior art keywords
bending
drive
axis
cutting device
head
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.)
Granted
Application number
EP18733542.7A
Other languages
German (de)
English (en)
Other versions
EP3645188B1 (fr
Inventor
Jörg Möck
Frank Weiblen
Harry Schweikardt
Ralf Schneider
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.)
Wafios AG
Original Assignee
Wafios 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 Wafios AG filed Critical Wafios AG
Publication of EP3645188A1 publication Critical patent/EP3645188A1/fr
Application granted granted Critical
Publication of EP3645188B1 publication Critical patent/EP3645188B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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 for carrying out the method according to the preamble of claim 3.
  • Preferred field of application is the bending of wire or tubes.
  • the movements of machine axes of a bending machine are controlled by means of a control device in order to be connected to the workpiece, for example a wire, a pipe, a pipe or a rod of round, flat or profiled material to produce one or more permanent bends by plastic forming.
  • the workpiece is reshaped by means of a bending machine having a bending head having a rotatable bending tool for engaging a portion of the workpiece to be bent whose orientation relative to a portion not to be bent is to be permanently changed by the plastic deformation bending operation.
  • a bending head can also be provided a fixed during the bending operation tool, which is often referred to as a bending mandrel.
  • the rotatable bending tool is rotatable about a bending axis by means of a bending drive controlled by a control device.
  • the bending axis is the axis of rotation of the rotary bending tool of the bending head.
  • the bending plane runs perpendicular to the bending axis.
  • the bending operation produces a flat bend on the workpiece parallel to the bending plane.
  • the rotatable bending tool may, for example, comprise a bending pin, which is applied for bending at a position spaced from the bending axis on one side of the portion to be bent. Bending pins come e.g. used for wire bending.
  • a workpiece section to be provided with a bend is first brought into a starting position in the engagement region of the bending head.
  • a workpiece section of suitable length can be moved or fed into the starting position parallel to a feed direction by a feed operation from a longer workpiece supply This procedure is common in wire bending and may also be used when bending thinner pipes.
  • the rotatable bending tool is brought into contact with the portion to be bent.
  • This may vary depending on the construction of the machine, e.g. by applying a bending pin to the portion to be bent on one side.
  • the outer contour of a bending mandrel can stabilize the inner contour of the bend and specify their radius exactly. A bending operation without bending form is also possible.
  • the bending head is usually first by a retraction movement parallel to a Biegekopfachse from its bending position (working position in which a bending operation can be performed) in a transfer position except Engaged with the workpiece. Thereafter, the workpiece may be e.g. be rotated to change the bending plane to the feed axis before the bending head is brought by a feed movement parallel to the bending head axis of the transfer position again the bending position in engagement with the workpiece.
  • a temporary retraction of the bending cop in the transfer position is usually also provided when the bending direction is to be reversed (change from left to right bending or vice versa) 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 start the next bending process.
  • the machine axis which causes the feed movements or retraction movements parallel to the bending head axis is referred to in this application as Z-axis.
  • the associated drive, which is controlled by the control device, is referred to as a Z drive.
  • the bending head axis, and thus the direction of movement of the movements of the bending head caused by the Z drive, are generally perpendicular to the direction in which the supplied, not yet bent workpiece is oriented, ie perpendicular to the feed direction.
  • the cutting devices of the conventional bending machines considered here are separate devices from the bending head, which have the tools (cutting tool) required for cutting through the workpiece, which are intended to be engaged on the workpiece.
  • a cutting device usually has two cutting tools that are movable relative to each other to perform a cutting operation. At least one of the cutting tools is mounted on a movable component of the cutting device, the cooperating other cutting tool can be machine-mounted or also movably mounted.
  • the cutting device may have a first knife fixed to the machine and a second knife movable relative thereto, the knives shearing or separating the bent part from the supplied material during the cutting operation in a kind of shearing motion. Since none of the cutting tools is mounted on the bending head, there are degrees of freedom in terms of 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 device is moved via this drive.
  • the invention provides a method having the features of claim 1 and a bending machine having the features of claim 3.
  • Advantageous developments are specified in the dependent claims. The wording of all claims is incorporated herein by reference.
  • the method can be carried out automatically by means of a bending machine.
  • the elongate workpiece or a portion thereof is fed to a bending unit of the bending machine.
  • the workpiece is withdrawn from a supply of material by means of a collection device and fed to the bending unit of the bending machine.
  • the bending unit has a bending head that can perform several different working 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 is rotatable about the bending axis by means of a bending drive.
  • the bending axis usually coincides with the bending head axis, so that the bending tool is rotated about the bending head axis (centric bending).
  • the bending axis can also be a bending axis that can be positioned or positioned parallel to the bending head axis, so that eccentric bending is possible.
  • the supplied portion of the workpiece is transformed by means of working movements of the bending head to a bent two- or three-dimensional bent part.
  • Each individual bending operation which is caused by the rotation of the bending tool, produces a flat bend.
  • bending in another plane can be generated, so that a three-dimensionally bent bending part can be produced.
  • the cutting device is a device separate from the bending head, which has the tools (cutting tool) required for cutting through the workpiece, which are intended to be engaged on the workpiece.
  • a cutter may e.g. two cutting tools that are movable relative to each other to perform a cutting operation. At least one of the cutting tools is mounted on a movable component of the cutting device.
  • the cooperating other cutting tool can be mounted fixed to the machine or also movably arranged. Since none of the cutting tools is mounted on the bending head in a cutting device separate from the bending head, there are degrees of freedom in terms of constructive design and arrangement of the cutting device with respect to the bending head. By designing the transmission device, the cutting forces achievable 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 as a drive of a movable component of the cutter used to perform the cutting operation.
  • a rotational movement of the bending tool about the bending axis actuates the cutting device by means of a transmission device.
  • the bending drive is used as a drive of a movable component of the cutting device for performing the cutting operation.
  • one aspect of the invention may also be formulated such 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 by means of a transmission device, ie indirectly or indirectly.
  • this concept can be implemented in a bending machine such that a movable component of the cutting device separate from the bending head is coupled by means of a transmission device with a drive of the bending head for transmitting forces and moments, so that the cutting device via this drive by means of theforementionedetragung nails or ., can be actuated 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 used Z drive thus receives a double function.
  • the bending drive could be coupled via a transmission device to the cutting device.
  • the cutting device may thus in principle also be coupled to the bending drive (i.e., the drive of the rotatable bending tool) for transmitting forces and moments 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 can be in particular a working movement of the entire bending head (parallel to the bending head axis) or a rotational movement of the rotatable bending tool about the bending axis.
  • the movable component of the cutting device which can be moved by means of the drive of the bending head has a lever which is rotatable about a lever axis.
  • This lever can also be referred to as a cutting lever.
  • the lever can serve as a carrier of a movable knife of the cutting device.
  • the lever can be designed as a two-armed lever with unequal length lever arms.
  • the leverage ratios are preferably selected so that a relatively large stroke of the coupled drive (e.g., the drive of the bending head) causes a relatively smaller movement of the knife of the cutter carried by the moveable component.
  • the coupled machine axis of the bending head in particular the Z-axis, is less heavily loaded by the cutting forces occurring during the cutting operation than in a likewise possible direct coupling without translation.
  • high cutting forces can be generated.
  • the transmission device may have, for example, intermeshing gears or other machine elements suitable for constructing a mechanical transmission device.
  • the transfer 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.
  • Bending mandrels and / or bending pins have multiple levels with different radii and can be brought by means of the Z-axis on or in the working plane. These bending level changes should also be able to be carried out in a motion-neutral manner.
  • the transmission device has a control cam 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 curve portion which is oriented such that a linear movement of the bending head parallel to the Biegekopfachse a first stroke section between the bending position and the Umsetz position no movement coupled to the Z-drive movable Causes 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 such that a further linear movement of the bending head parallel to the Biegekopfachse beyond the transfer position, a movement of coupled to the Z-drive movable Caused component of the cutting device.
  • the advantageous kinematics can be implemented by forming an angular groove on a carriage of the bending head that is movable parallel to the bending head axis Cam forms, and that on a lever arm of the lever, a cam roller is mounted, which engages in the groove. It can thereby be achieved that there is a virtually backlash-free transmission of forces and moments to the movable component of the cutting device both during a return movement of the bending head from the bending position via the transfer position and beyond, as well as during a working movement in the opposite direction.
  • a reverse arrangement (with the groove in the lever and a cam roller on a carriage of the bending head is also possible.
  • Fig. 1 shows an oblique perspective view of a bending machine according to a
  • Fig. 2 shows a plan view of a section of the bending machine of Figure 1 in the direction parallel to the bending head axis of the bending head.
  • FIGS. 3 to 5 show different working positions of the bending head and the cutting device coupled thereto.
  • 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 of Fig. 1 in the direction parallel to the bending head axis of its bending head.
  • the bending machine 100 is designed as a wire bending machine to provide a portion of an elongated workpiece 110 in the form of a wire, preferably round in cross section, by cold working with one or more bends in one or more bending planes. It is also possible to bend wires with a flat or profiled cross-section.
  • the bending machine 100 has a rectangular machine coordinate system MK, identified by lowercase letters x, y, and z, having a vertical z-axis and horizontal x and y axes.
  • the x-axis is parallel to the workpiece axis 1 12 of the not yet bent workpiece. From the coordinate axes Distinguish the machine axes that are driven in a controlled manner, which are each denoted by capital letters (eg A, C, Z, etc.).
  • All drives for the machine axes are electrically connected to a (not shown) control device, which includes, among other things, the power supply for the drives, a central computer unit and storage units. With the aid of the control software active in the control software, the movements of all machine axes are variably controlled to produce 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 a starting position in the engagement region of the bending head 180.
  • a longer workpiece supply (coil) is used. This is the case in the illustrated embodiment.
  • the bending machine has for this purpose a in Fig. 1 not visible, equipped with feed rollers collection device, the successive wire sections of a wire supply and possibly guided by an optional straightening wire with numerically controlled feed rate profile in the horizontal direction (parallel to the x-direction) in the Pull the area of the bending head 180 or can feed.
  • the wire is guided on the outlet side through a tubular wire guide and exits in the horizontal feed direction.
  • the feed (the retraction movement) is stopped when the wire reaches a home position.
  • the linear machine axis for the supply is referred to as C-axis, it has a motor, not shown.
  • the wire emerges from the front end of the wire guide as it is fed, thereafter passes through the region of a later-described cutter 150 into the engagement region of the bending head 180.
  • the cutter 150 is disposed between the feeder and the bending head.
  • the intake device can be rotated as a whole 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 operation and has a cylindrical outer contour in plan view (see FIG.
  • This tool part carries at its top several interchangeable bending mandrels of different diameters, one of which (eg the bending mandrel 183) can be brought into a working position in the vicinity of the workpiece axis to serve as internal support of the workpiece portion during the bending operation.
  • the outer diameter of the used bending mandrel 183 determines the bending radius of the bend to be generated, ie the radius of curvature of the bend.
  • a separate output 187 (servomotor and gearbox) is provided for the rotation of the inner tool part 182 about the bending head axis 185 for changing between different bending mandrels.
  • the corresponding machine axis is also called mandrel axis.
  • the bending head 180 has a bending tool 184 which is rotatable relative to the inner tool part and which is intended to laterally engage a portion of the workpiece material to be bent over.
  • the bending tool 184 carries on its upper side a bending pin 186 and is rotatable about a bending axis, which in this case coincides with the bending head axis 185, by means of a bending drive 189 (servomotor and gearbox) controlled by the control device.
  • the orientation of the bending axis determines the orientation of the bending plane, which is orthogonal to the bending axis and the workpiece axis 1 contains 12.
  • the bending unit with the bending head 180 is in some embodiments as a whole pivotable about an axis parallel to the x-axis, so that the bending axis 185 can be selectively aligned vertically (parallel to the z-direction) or obliquely to an inclined position.
  • a manual or motorized pivoting device is possible.
  • the bending unit as a whole, ie including the bending axis and the Z-axis is pivoted.
  • the tool elements of the bending head are mounted in a solid carrier 193, which can be guided in the case of pivotable variants in circular-arc-shaped guides on the front wall of the machine base 102.
  • a metallic table top 192 of a support table 190 is mounted, the flat top in each position of the bending head is slightly below the level of the workpiece axis 1 12.
  • the support table serves as a support for the projecting beyond the bending head portions of a bent part and as a chute on the finished bent bent parts can slide laterally after separation from the supply of material in a collection container.
  • FIGS. 2 to 5 show a plan view of a section of the bending machine of FIG. 1 in the direction parallel to the bending head axis 185 of the bending head 180. It can also be seen the cutting device 150, between the (not shown in Fig. 2) feeding device for the workpiece and the bending head 180 is arranged.
  • 3 to 5 are views of the bending machine in the region of the bending head 180 and the cutter 150 in a direction parallel to the x-axis of the machine coordinate system and parallel to the feed direction of the workpiece to be bent.
  • the cutting device 150 is a separate device from the bending head 180, which has the necessary tools for cutting the workpiece (cutting tools).
  • the cutting tools are those components of the cutting device that are intended to be in direct contact with the workpiece or to engage the workpiece. At the bending head no tools of the cutting device are attached.
  • Fig. 3 shows the components of the bending machine while in a first position, which is also referred to as bending position.
  • the bending head 180 In this first position, the bending head 180 is in its workpiece-closest end position, in which the bending pin 186 of the bending tool is inserted into the workpiece plane such that rotation of the bending tool can cause bending on the workpiece.
  • the cutting device 150 is in an open position without cutting engagement on the workpiece. In the open position, a supply of workpiece material in the feed direction (parallel to the x-axis or the workpiece longitudinal axis 1 12) is possible.
  • Fig. 4 shows the same components in a second position, which is also referred to here as Umsetz- position.
  • the bending head 180 is in a relative to the bending position slightly (eg, by about 10 mm to about 20 mm, depending on the wire diameter, if necessary, more or less) retracted position, the converting a bending pin, so a rotation of the bending tool without Attack on the workpiece allows.
  • the cutter is still in an open position.
  • Fig. 5 shows a configuration in which the bending head 180 is in its lower position farthest from the workpiece. In the movement From the transfer position to this lowermost position, the cutting device 150 is actuated, so that the finished bent bent part is separated from the supplied workpiece section.
  • structural components will be explained in more detail, which allow this advantageous functionality.
  • the bending head 180 or its components are mounted on a linearly movable carriage 200, which is also referred to as a bending slide.
  • the direction of travel of the carriage is perpendicular to the feed direction of the wire, that is perpendicular to the x-direction of the machine coordinate system.
  • the orientation of the flexure defines the orientation of the flexure head 185 with respect to the feed direction of the workpiece.
  • the bending head can be moved as a whole parallel to the bending head axis 185 linear.
  • the numerically controlled machine axis, which causes this linear movement of the bending head parallel to the bending head axis is referred to here as Z-axis.
  • the associated drive which is referred to here as a Z drive, comprises a crank drive 210, which is rotatable about an axis of rotation extending parallel to the x-axis.
  • the carriage 200 is coupled via a transmission rod 220 to the crank drive 210 of the Z drive.
  • a plate-shaped portion 205 is mounted, in which an angular groove or groove curve 165 incorporated.
  • the groove which is also referred to as a cam groove, can be subdivided into a first section 165-1 aligned parallel to the bending head axis 185 and a second section 165-2 which is inclined relative to the first section or the bending head axis.
  • the first portion and the second portion are each substantially rectilinear and include an acute angle of approximately 20 ° to 40 ° to each other.
  • the second section 165-2 is more than twice as long as the first section 165-1.
  • the cutting device 150 is constructed such that a finished bent part can be separated from the supplied workpiece section in a cutting operation in the manner of a shear cut.
  • a first knife 152 of the cutter 150 is fixed to the machine by means of an adjustable knife carrier, ie fixedly mounted with respect 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 cutter.
  • the interchangeable blades 152, 154 are the cutting tools of the cutter 150. Between the blades is the kerf 155, which defines the parting plane.
  • the shear cut is carried out when the second knife 154 moves relative to the first knife 152 substantially parallel to the xy plane approximately in the y-direction (on a circular arc).
  • the movable component 160 which carries the second knife 154, is a lever 160 (also called a cut lever 160), which is mounted so as to be pivotable about a machine-fixed rotation axis 162 running parallel to the x-direction.
  • the support structure for the second knife 154 is proximate the pivot axis 162 at the top of the lever 160.
  • a longer angled lever arm 164 projects downward substantially parallel or at an acute angle to the flexure head axis 185.
  • a cam roller 230 is rotatably mounted. The cam roller 230 is guided in the angled groove 165 (groove cam, cam groove) on the bending carriage.
  • the cam roller 230 mounted on the lever 160 and the angular groove 165 on the bending carriage 200 are essential components of a mechanical transmission 250 comprising a movable component of the cutter 150, namely the lever 160 with the second knife 154 attached thereto, to the Z-drive of the bending head 180 coupled for the transmission of forces and moments such that the cutting device 150 can be actuated exclusively 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 cut carrier, binds 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 and the machine-mounted first knife 152.
  • the lever (cutting lever) 160 is rotatable on Deposited on the cutting support.
  • the cam follower 230 runs in an angular cam groove 165.
  • the cam groove 165 is attached to the carriage 200 (bending slide) and moves with the carriage 160 parallel to the bending head axis 185 up and down , This is the working movement of the Z-axis of the drive system of the bending machine.
  • the groove curve 165 has a straight, parallel to the Z-axis movement first portion 165-1 and extending at an angle to the Z-axis movement second portion 165- 2.
  • the two straight portions or sections of the groove curve are over a running according to a law of motion Curved part connected.
  • the Z-axis moves the bending head 180 parallel to the bending head axis 185 up and down.
  • the Z-axis is driven in the example with a crank, as shown in the drawings, or via a ball screw.
  • the Z-axis can alternatively be driven with any other suitable solution for linear drives.
  • the bending head 180 In the first position (bending position) shown in FIG. 3, the bending head 180 is in a bending position with respect to the Z-axis.
  • Lever 160 (cut lever) is in the wire open position (see detail 3A).
  • the flexure head 180 is in a position to translate the flexure pin 186 with respect to the Z-axis.
  • This axial position is referred to as the translate position.
  • the bending finger can be performed under the wire and thus the bending direction can be changed.
  • the cam roller 230 has moved only linearly parallel to the Biegekopfachse when changing from the bending position to the transfer position within the first portion 165-1 of the cam groove 165 only linearly.
  • no pivoting movement was caused on the lever 160, so that the blades of the cutting device are still in the open position.
  • the relative position of the blades of the cutting device has not changed during the transition from the bending position to the transfer position.
  • the normal bending operation which optionally includes multiple axial movement of the bending head from the bending position to the transfer position, the cutting device is thus practically decoupled from the Z drive.
  • the cutting operation can be initiated.
  • the bending head is moved back by means of the Z drive beyond the transfer position in the most retracted position (cutting position).
  • Fig. 5 shows a situation in which the bending head is in the third position for cutting the workpiece with respect to the Z-axis.
  • the cam roller 230 moves into the second section 165-2 via the transition section between the first section 165-1 and the second section 165-2 and then along the second section.
  • the lever 160 is swung further and further out during the retraction movement, so that the second knife 154 shifts relative to the first knife 152 in a cutting motion and the wire is sheared off.
  • the cutting lever is in the maximum deflected position shown in FIG. 5, the cutting operation has been completed.
  • the bending head In order to produce a further bending part, the bending head must be moved by means of the Z-axis again upwards, at least to the transfer position, so that the movable knife releases the opening of the fixed knife again.
  • the bending head 180 can be moved up and down to move the bending tool 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 continues to move beyond the transfer position down until the workpiece (the wire) is cut off.
  • the bent 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, that is, by the very far retracted position of the bending head, because the probability that the bending part will get caught on the bending head, thereby significantly reduced.

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

Abstract

L'invention concerne un procédé de fabrication d'une pièce pliée à partir d'une pièce à usiner allongée, en particulier à partir d'un fil ou d'un tube en matériau rond, plat ou profilé, au moyen d'une machine de pliage selon lequel la pièce à usiner est introduite dans une unité de pliage de la machine de pliage, l'unité de pliage comportant une tête de pliage (180) qui peut être conduite au moyen d'un moteur dans la direction Z parallèlement à un axe (185) de tête de pliage et qui comporte un outil de pliage (184), lequel peut tourner au moyen d'un moteur de pliage autour d'un axe de pliage. Un segment introduit de la pièce à usiner est déformé au moyen des mouvements de travail de la tête de pliage en une pièce pliée arquée bidimensionnelle ou tridimensionnelle. La pièce pliée prête est séparée du matériau de pièce à usiner introduit dans une opération de coupe au moyen d'un dispositif de coupe (150) séparé de la tête de pliage. Le dispositif de coupe (150) est actionné par un mouvement de travail de la tête de pliage (180) parallèlement à l'axe (185) de tête de pliage ou par un mouvement de rotation de l'outil de pliage (184) autour de l'axe de pliage au moyen d'un dispositif de transmission (250).Selon l'invention, dans la machine de pliage, un composant mobile (160) du dispositif de coupe (150) est couplé au moteur dans la direction Z ou au moteur de pliage au moyen d'un dispositif de transmission (250) pour la transmission de forces et de moments, de sorte que le dispositif de coupe puisse être actionné à l'aide des éléments couplés.On peut ainsi se passer d'un moteur séparé pour le dispositif de coupe (150).
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

Publications (2)

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

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

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EP3238850B1 (fr) * 2016-04-27 2019-10-23 Advanced Orthodontic Solutions Machine de pliage de fil
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***
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

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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
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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
EP1591174B1 (fr) 2004-03-26 2008-05-28 WAFIOS Aktiengesellschaft Dispositif de pliage pour des pièces en forme de barre et de tube
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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EP3645188B1 (fr) 2021-09-29
US20200130038A1 (en) 2020-04-30
WO2019001982A1 (fr) 2019-01-03
US11179760B2 (en) 2021-11-23
DE102017210714A1 (de) 2018-12-27
CN110958919A (zh) 2020-04-03
CN110958919B (zh) 2022-10-04

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