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EP3159068B1 - Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage - Google Patents

Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage Download PDF

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Publication number
EP3159068B1
EP3159068B1 EP15190545.2A EP15190545A EP3159068B1 EP 3159068 B1 EP3159068 B1 EP 3159068B1 EP 15190545 A EP15190545 A EP 15190545A EP 3159068 B1 EP3159068 B1 EP 3159068B1
Authority
EP
European Patent Office
Prior art keywords
drive
main spindle
forming machine
spindle
machine according
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.)
Active
Application number
EP15190545.2A
Other languages
German (de)
English (en)
Other versions
EP3159068A1 (fr
Inventor
Benedikt Nillies
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.)
Leifeld Metal Spinning GmbH
Original Assignee
Leifeld Metal Spinning GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to ES15190545.2T priority Critical patent/ES2665845T3/es
Application filed by Leifeld Metal Spinning GmbH filed Critical Leifeld Metal Spinning GmbH
Priority to EP15190545.2A priority patent/EP3159068B1/fr
Priority to JP2017546692A priority patent/JP6573677B2/ja
Priority to CN201680013624.4A priority patent/CN107427887B/zh
Priority to RU2017124611A priority patent/RU2698236C2/ru
Priority to PCT/EP2016/067899 priority patent/WO2017067682A1/fr
Priority to US15/545,853 priority patent/US10888911B2/en
Publication of EP3159068A1 publication Critical patent/EP3159068A1/fr
Application granted granted Critical
Publication of EP3159068B1 publication Critical patent/EP3159068B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers

Definitions

  • the invention relates to a forming machine for pressing / spin forming a workpiece with a machine bed, a headstock, a main spindle rotatably mounted on the headstock with a spinning mandrel, which is provided for receiving the workpiece, a support, which carries at least one machining tool, and which relative to Main spindle is axially displaceable in a longitudinal direction of the machine bed, a main spindle drive for rotationally driving the main spindle and a feed drive for moving the support.
  • the invention relates to a method for pressing / spin forming a workpiece, wherein the workpiece is arranged on a main spindle attached to spin-rolling mandrel, the main spindle is driven by one or more main spindle drives and a support on which at least one processing tool is arranged, relative to the Driven rolling mandrel for pressing / spin forming the workpiece is moved.
  • Pressing and pressure rollers are non-cutting forming processes in which a usually rotationally symmetrical workpiece (blank) is pressed or stretched by one or more pressing rollers or flow-forming rollers against its outer circumferential surface via a staggered spinning mandrel having a predetermined contour. In this case takes place during machining an axial feed of the spinning rollers relative to the workpiece.
  • the workpiece is pressed against the outer contour of the spinning mandrel and contoured to a desired contour, wherein also reducing the wall thickness can take place (spinning rollers).
  • the so-called flow-molding or stretch-flow-molding can be understood as one of the mentioned forming processes.
  • a generic spinning machine is for example from the DE 30 41 267 A1 out.
  • the main spindle is driven by a main spindle motor via a V-belt, a gear or a toothed belt drive.
  • Drive power up to 300 kW can be used.
  • Torques of up to approx. 40,000 Nm can be achieved via several gear stages in the headstock.
  • the invention has for its object to provide a forming machine for pressing / pressure-rolling a workpiece and a corresponding method, which are suitable for providing high Umform peak and for processing of large workpieces with the simplest possible design of the forming machine.
  • a forming machine is characterized in that the main spindle drive has at least two drive motors, each with a drive pinion and that the main spindle has one or more drive gears, which are driven by the drive pinion of the drive motors.
  • a basic idea of the invention can be seen to provide the power for driving the main spindle by a plurality of drive motors. This can be provided to provide high torque several smaller engines that can be offered in larger quantities on the market and thus be cheaper.
  • An advantage of the forming machine according to the invention is that a drive torque acting on the drive gear of the main spindle (total drive torque) is divided into a plurality, in particular two, partial drive torques.
  • the drive gear can thus be subjected to several, much lower partial loads instead of a substantially punctual, high total load.
  • the punctual load of the drive gear can thereby be significantly reduced. As a result, for example, reduces the requirements of the material or the dimensions of the gear and thus costs can be saved.
  • Another basic idea of the invention is to operate the at least two drive motors in parallel.
  • the provided on the main spindle drive gear is driven by the drive motors associated drive pinion for driving the main spindle simultaneously.
  • the drive pinions and / or the drive motors are arranged symmetrically to the drive gear of the main spindle.
  • a symmetrical arrangement is to be understood in particular to mean an arrangement having drive pinions or drive motors which are equidistant with respect to the drive gearwheel.
  • this may be understood to mean a rotationally symmetrical arrangement with respect to a rotational axis of the drive gear.
  • two drive pinions or drive motors these are accordingly offset by 180 ° with respect to each other, offset by three at 120 ° to one another, etc. Due to the symmetrical arrangement, the greatest possible relief of the drive gear takes place.
  • a particularly preferred embodiment is characterized in that the drive pinions are each arranged on a motor output shaft of the corresponding drive motor and that the drive pinion are directly in engagement with the drive gear of the main spindle.
  • the drives an exact speed synchronization is given.
  • a ratio i of 1:10 is achieved, which is a spindle speed of 0 to 200 minutes. -1 can result.
  • a constant torque of approx. 50,000 Nm is achieved. Even torques of more than 100,000 Nm can be realized.
  • the direct coupling of drive motor and main spindle dispenses with several gear stages, which are generally cost-intensive and susceptible to wear.
  • a particular advantage results from the fact that the energy usually dissipated in the transmission (friction losses) is available as additional drive energy for the main spindle.
  • the efficiency of the drive according to the invention is thus particularly good.
  • expensive lubrication and cooling systems for lubricating and cooling a transmission can be dispensed with.
  • the drive motors are designed as slowly rotating motors, in particular as three-phase asynchronous motors.
  • Such motors have a high nominal torque at low speeds. They therefore offer the advantage that no or only a low speed ratio for transmitting the power from the motor output to the main spindle is required.
  • the translation may be executed as a single-stage translation only. Transmission or translation losses can thus be significantly minimized.
  • Slow-rotating three-phase asynchronous motors are particularly suitable for providing large and temporally constant torques. Thus, torques of over 100,000 Nm can be realized.
  • the feed drive has a plurality of drive units, which are operable in a gantry operation.
  • a plurality of drive units for driving the support has the advantage that the drive power is divided.
  • a single drive unit therefore has to provide only a fraction of the total drive power available. As a result, the overall drive power can be increased in a simple manner.
  • the drive units In order to produce high-precision cylinder tubes, the drive units must be operated in synchronism. For this purpose, it is provided that the drive units are driven in a so-called gantry operation. In a gantry operation, for example, one or more drives follow synchronously a leading drive unit and thus ensure a symmetrical feed at sometimes different drive torques.
  • At least four drive units are provided.
  • the axial feeds which are provided by the drive units, are introduced as symmetrically as possible into the system with great positioning accuracy.
  • the axial relative movement of the spinning mandrel to the spinning roller can be done via a method of support, a method of the main spindle over the headstock or by a combination of both.
  • the headstock can also be referred to as a headstock. It has been found that four drive units a particularly reliable and accurate introduction of the feed forces in the support or the headstock with the main spindle enable. A special control technology ensures the required synchronization of the drive units.
  • the drive units are of the same design.
  • An identical embodiment of the drive units also has the advantage that storage costs and repair costs of the drive units can be reduced.
  • the drive units are arranged symmetrically about a machine axis of the forming machine.
  • a machine axis is understood in particular to mean an axis which runs through an axis of rotation of the main spindle. This axis also forms the center of symmetry of the forces acting on the support by machining the workpiece.
  • An advantageous embodiment of the forming machine according to the invention is characterized in that the drive units each have a ball screw and that the ballscrews are arranged parallel to each other.
  • Ball screw drives are suitable for exact positioning of the support due to their high precision.
  • four ball screws are provided, which are synchronized via a gantry dressing.
  • the drives are operated in synchronous rotation or precise position via a CNC control.
  • a drive can be provided with a planetary roller screw drive.
  • At least one ball screw is made in several parts, in particular two parts, that a first part of the ball screw is arranged in a loaded working area and a second, smaller part of the ball screw in an unloaded working area and that the second part of the ball screw for biasing the first part of the ball screw is biased.
  • a stressed working area here is to be understood as meaning, in particular, a region between the headstock and the support.
  • the second part of the ball screw has the function of a support. The support of the first part is achieved by biasing the second, unloaded part.
  • a rotary encoder / measuring system is arranged for position control and / or position control of the support on the second part of the ball screw.
  • Encoder / measuring system also known as incremental encoders a highly accurate detection of changes in position that can capture both the distance and the direction.
  • the ball screw spindles must have a large length.
  • a Kalottenabstützung is provided for supporting at least one ball screw. By such a support sagging of the ball screw is reduced. This leads to a more precise propulsion and a more precise guidance of the support. The quality of workpiece machining can thus be increased.
  • the execution as Kalottenabstützung is advantageous because it causes a low friction and is inexpensive to produce.
  • the Kalottenabstützung can be designed as a moving or as a continuous Kalottenabstützung.
  • a rotating nut and pre-tensioned spindle system can be used to increase the positioning accuracy of the support.
  • the main spindle transmits the torque to the spinning mandrel in a form-fitting manner.
  • the positive connection between the spinning mandrel and the main spindle can be provided in particular in addition to a frictional connection.
  • the frictional connection provided on the main spindle tool holder is designed as a cone seat.
  • a particularly preferred embodiment of the positive connection is given by the fact that the positive connection between the spinning mandrel and the main spindle is realized as a Hirth toothing. This is located both on the front side of the tool holder and on the front side of the spinning mandrel.
  • Hirth toothing can in a particularly advantageous and reliable manner the combination of a positive and a frictional connection can be realized.
  • an ejector device with a print head or rotary feed and a tailstock with a Andschreibverinrung are provided by means of which the spinning mandrel is clamped to the main spindle.
  • the flow-forming mandrel can be clamped to a cone of the tool holder and held securely during forming with high torques. Even during a workpiece change the spinning mandrel can be kept in this way.
  • a further advantageous embodiment of the invention is that a tailstock is provided with a tailstock spindle, that between the main spindle and tailstock spindle speed synchronization is adjustable and that this speed synchronization is switchable to a torque-controlled operation.
  • the machine is preferably operated in torque-controlled mode.
  • the available torque can be further increased during the forming process.
  • the peripheral speed of the roller is synchronized to the machining diameter.
  • the spinning rollers and / or radial units of the support are mounted relative to each other adjustable and that the spinning rollers and / or the radial units are axially adjustable by means of an adjusting device under load.
  • the support several rollers or radial units are mounted linearly adjustable.
  • the adjustability is preferably in the axial direction, but may also be provided in the radial direction.
  • the radial units are bearing elements in which the spinning rollers are rotatably mounted.
  • corresponding adjusting devices which may have linear drives, the individual rollers or radial units can be adjusted and adjusted to each other.
  • at least one radial unit can be supported indirectly via a stabilization frame.
  • the adjustment is preferably carried out under load, so in the ongoing forming operation, so that very precise forming can be achieved.
  • the inventive method for pressing / spinning of the workpiece is characterized in that the main spindle drive has at least two drive motors each having a drive pinion and that the main spindle has a drive gear, which is driven by the drive pinion of the drive motors.
  • the main spindle drive has at least two drive motors each having a drive pinion and that the main spindle has a drive gear, which is driven by the drive pinion of the drive motors.
  • a preferred embodiment of the method consists in that the support and / or the headstock is moved by means of a plurality of drive units which are operated in a gantry dressing. Again, there are the advantages shown in connection with the corresponding forming machine.
  • FIGS. 1 to 5 show a forming machine 1 according to the invention in different views.
  • the forming machine 1 has a machine bed 10 with a headstock 20 mounted thereon.
  • the headstock 20, which also as a headstock can be designated, is mounted fixed or axially movable.
  • On the machine bed 10, a support 30 is further guided displaceably parallel to a machine axis 8 of the forming machine.
  • a tailstock 40 Seen in the longitudinal direction from the perspective of the headstock 20 behind the support 30 has a first tailstock body 44 and a second tailstock body 45.
  • First tailstock body 44 and second tailstock body 45 are coupled together via a feed device 46.
  • the tailstock 40 may also be formed in one piece.
  • the tailstock 40 is preferably slidably coupled to the headstock 20. As a result, a displacement of the tailstock 40 is avoided, whereby a particularly efficient forming is possible.
  • a traverse 50 is provided above the machine bed 10 substantially parallel to the machine axis 8 and to a longitudinal direction of the machine bed 10. This extends substantially over the entire length of the machine bed 10. At least one end of the cross member 50 is firmly connected via at least one truss support 51, with the machine bed 10. In an embodiment with a fixed headstock 20, this can serve as a truss suspension.
  • the workpiece 5 to be formed is preferably a cylindrical body without bottom, which may also be referred to as a cylinder tube or cylinder liner.
  • the main spindle 22 is rotatably driven by a main spindle drive 23.
  • the main spindle drive 23 has, in the embodiment shown, two drive motors 23a and 23b, which are arranged at the same distance from the machine axis 8.
  • the drive motors 23a and 23b are located below the machine axis 8 and mirror-symmetrical to a vertical machine center plane 9 which extends through the machine axis 8.
  • the machine axis 8 represents, in particular, a longitudinal axis of the forming machine 1, which runs through an axis of rotation of the main spindle 22.
  • machining tools 26 are formed as spinning rollers or flow-forming rollers and are brought into engagement with the circumference of the workpiece 5 by advances in the spindle-radial direction. Due to the forces thus applied, a cold forming operation of the workpiece 5 takes place. In addition to the radial feed, an axial feed of the spinning rolls or flow-forming rolls takes place.
  • the support 30 in the in Fig. 1 The illustration shown moves to the left and the formed material flows in a so-called mating mode to the right, in a so-called synchronization process to the left.
  • On the support 30 three each offset by 120 ° machining tools 26 are arranged. Preferably, four each offset by 90 ° machining tools 26 may be provided, which allow an even better force distribution.
  • a feed drive is provided for the axial movement of the support 30, .
  • This has four drive units in the illustrated embodiment.
  • the drive units are designed as ball screw drives that can be operated in the so-called gantry dressing. By this achieved synchronization of the drive units ensures that the drive units bring the feeds symmetrically in the support.
  • a drive unit has in each case a ball screw 14 and a ball screw drive 16.
  • two opposite ball screws 14 with their corresponding ball screw drives 16 are arranged rotationally symmetrical about the machine axis 8. All drive units have the same distance from the machine axis 8.
  • Seen in cross section are the ball screws 14 in an upper and lower portion of the forming machine 1, wherein each two ball screws 14 are arranged mirror-symmetrically to the machine center plane 9.
  • the ball screw drives 16 are concentrated in a vertical direction in an approximately central region laterally of the machine axis 8.
  • two ball screw drives 16 are arranged mirror-symmetrically to the machine center plane 9.
  • four threaded spindle drives are used with a total of 3000 kN feed force.
  • 3000 kN feed force For example, from a steel box with 50 mm Wall thickness and 3000 mm length to produce a cylinder tube of 12 m in length and with a final wall thickness of 12.5 mm, it is intended to do this in one or two overflows, each with a wall thickness reduction of 50% and more.
  • Such stretching lengths were hitherto not possible with previously known, one-piece ball screw drives or planetary roller screw drives in the required size and accuracy.
  • a measuring system / rotary encoder 32 is provided for detecting the position of the support 30.
  • the achievable by this precise orientation is suitable to improve the position control or position control of the support 30.
  • the forming machine 1 For detecting the length of a counter-rolled rolled workpiece 5 during the forming, the forming machine 1 is equipped with a stretch length detecting measuring system 58.
  • the Streckinner chargedsmesssystem 58 has a measuring carriage 59 which carries a compact module and is guided along a rail 52 along the crossbar 50 longitudinally displaceable.
  • the tailstock 40 has a first tailstock body 44 and a second tailstock body 45 in this embodiment.
  • On the second tailstock body 45 is in extension of the main spindle 22, at the height of the machine axis 8, a tailstock spindle 41 with a tool holder, in particular for a Andschreibverinrung 47, rotatably mounted.
  • the tailstock spindle 41 is driven by a preferably same spindle drive, as it is also used for the main spindle 22. As a result, a cost-effective storage is achieved.
  • a tailstock spindle drive 43 is in Fig. 2 shown.
  • the spinning mandrel 24 is rotationally fixed, in particular by an axial Hirth toothing, connected to the main spindle 22.
  • the tailstock 40 in particular the second tailstock body 45
  • the tailstock spindle 41 and the Andrückverinrung 47 can be axially pressed against the spinning mandrel 24 and the workpiece 5 (cylinder tube).
  • An axial and radial contact force is adjustable according to requirements. This ensures that a secure positive connection between the main spindle 22 and spinning mandrel 24 is ensured even during the forming process at high torques.
  • an ejector device 18 is provided on the headstock 20.
  • the ejection device 18 is equipped with a print head and can be used in conjunction with the Andrückverinrung 47 in addition to tension the spinning mandrel 24 on the main spindle 22 and - to keep it safe even at high torques. Also, the ejection device 18 can be used for other additional functions, such as the operation of displacement or spreading tools.
  • a plurality of support means 56 are provided with roller bodies 54, which are suitable for receiving axial and radial rotational movements and rotational movements.
  • the support 56 can be omitted.
  • Fig. 2 and Fig. 5 show the in Fig. 1 illustrated forming machine 1 in a view from above.
  • the tailstock spindle 41, the Andrückverinrung 47 and the tailstock spindle drive 43 are radially movable to the machine axis 8 in a lateral region of the forming machine 1.
  • Fig. 3 shows a front view of the forming machine 1. To prevent the escape of cooling emulsion encapsulation 66 of the working space is provided.
  • Fig. 4 shows a cross-sectional view of the forming machine 1 along the section line A - B of Fig. 1 .
  • Three processing tools 26 in the form of spinning rolls or spinning rolls are each offset by 120 ° from one another about the spinning mandrel 24.
  • At the support housing three stripping devices 28 for stripping the finished workpiece 5 from the spinning mandrel 24 are also arranged offset by 120 ° to each other. Due to the symmetrical arrangement of the stripping devices 28, tilting of the workpiece 5 during stripping from the spinning mandrel 24 is prevented.
  • Fig. 5 shows a cross-sectional view along the section line C - D of Fig. 1 ,
  • the tailstock spindle 41 is arranged on a spindle slide 62.
  • the spindle slide 62 is displaceable along a slide guide 63.
  • several guide carriages or guide shoes 64 are arranged on the spindle slide 62.
  • the Tailstock spindle 41 is moved out with the spindle slide 62 from a region of the machine axis 8.
  • FIGS. 6 and 7 In another embodiment of the invention, a forming machine with a total of four spinning rollers 35a, 35b, 35c and 35d is shown schematically, which transform a tubular workpiece 5 on a spinning mandrel 24.
  • the four spinning rollers 35 are offset by 90 ° to each other about the axis of rotation of the spinning mandrel 24 and distributed around the circumference of the workpiece 5.
  • the individual spinning rollers 35 with respect to their axial and radial position to each other differences, so that the four spinning rollers 35 each make different forming steps.
  • the first leading pusher roller 35a has an axially leading and a radially outboard position.
  • the first spinning roller 35a has a conical roller peripheral surface 36 which has a first flat angle of inclination to a roller axis which is parallel to the axis of rotation of the workpiece 5.
  • the position of the second pusher roller 35b and the third pusher roller 35c each have a position further retarded in the axial and radial directions to accordingly perform further forming steps. In this case, the angle of inclination of the roller peripheral surface 36 to the roller axle continues to increase.
  • the fourth and last spinning roller 35d is trailing in the axial direction and has, in the radial direction, the inner position, which defines the final diameter for the workpiece 5.
  • the lead-in angle of the fourth pusher roll 35d is most inclined to the roll axis to effect a desired spin forming and material displacement.
  • Each of the spinning rollers is also provided with an open surface 37. This ensures a smoothing of the leaking material surface.
  • the transition from the roller peripheral surface 36 to the free surface 37 is provided with a more or less large radius. Very large radii can also replace the conical surface 36.
  • the support 30 is preferably designed as a frame construction to accommodate the high forming forces safely.
  • the required axial displacement of the spinning rollers 35 can be adjusted manually via adjusting spindles and / or displaceable roller bearings. Also provided is an automatic role-axial shift, which allows a displacement of the rollers or the axial displacement in the process and / or under load.
  • Another preferred embodiment uses the existing axial feed drives of the support.
  • a multi-part design of the support is then used, which in turn are interconnected via axial guides.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Press Drives And Press Lines (AREA)

Claims (20)

  1. Machine de mise en forme pour l'emboutissage et/ou le fluotournage d'une pièce (5), comportant
    - un bâti de machine (10),
    - un porte-broche (20),
    - une broche principale (22) montée de manière à pouvoir tourner au niveau du porte-broche (20), avec un mandrin de fluotournage (24), qui est prévu afin de recevoir la pièce (5),
    - un support (30), qui supporte au moins un outil d'usinage (26) et qui peut être coulissé de manière axiale par rapport à la broche principale dans un sens longitudinal du bâti de machine (10),
    - un entraînement de broche principale (23) servant à entraîner en rotation la broche principale (22), et
    - un entraînement d'avancement servant à coulisser le support (30),
    caractérisée en ce que
    l'entraînement de broche principale (23) présente au moins deux moteurs d'entraînement avec respectivement un pignon d'entraînement, et
    en ce que la broche principale (22) présente au moins une roue dentée d'entraînement, qui peut être entraînée par les pignons d'entraînement des moteurs d'entraînement.
  2. Machine de mise en forme selon la revendication 1,
    caractérisée en ce que
    les pignons d'entraînement et/ou les moteurs d'entraînement sont disposés de manière symétrique par rapport à la roue dentée d'entraînement de la broche principale (22).
  3. Machine de mise en forme selon l'une quelconque des revendications 1 ou 2,
    caractérisée en ce que
    les pignons d'entraînement sont disposés respectivement sur un arbre de sortie de moteur du moteur d'entraînement correspondant, et
    en ce que les pignons d'entraînement sont en prise directement avec la roue dentée d'entraînement de la broche principale (22).
  4. Machine de mise en forme selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que
    les moteurs d'entraînement sont réalisés sous la forme de moteurs à rotation lente, en particulier sous la forme de moteurs asynchrones à courant triphasé.
  5. Machine de mise en forme selon la revendication 1,
    caractérisée en ce que
    l'entraînement d'avancement présente plusieurs unités d'entraînement, qui peuvent fonctionner dans un mode de fonctionnement gantry.
  6. Machine de mise en forme selon la revendication 5,
    caractérisée en ce que
    au moins quatre unités d'entraînement sont prévues.
  7. Machine de mise en forme selon la revendication 5 ou 6,
    caractérisée en ce que
    les unités d'entraînement sont réalisées de manière identique.
  8. Machine de mise en forme selon l'une quelconque des revendications 5 à 7,
    caractérisée en ce que
    les unités d'entraînement sont disposées de manière symétrique tout autour d'un axe de machine (8) de la machine de mise en forme (1).
  9. Machine de mise en forme selon l'une quelconque des revendications 5 à 8,
    caractérisée en ce que
    les unités d'entraînement présentent respectivement une broche filetée à billes (14), et en ce que les broches filetées à billes (14) sont disposées de manière parallèle les unes par rapport aux autres.
  10. Machine de mise en forme selon la revendication 9,
    caractérisée en ce que
    au moins une broche filetée à billes (14) est réalisée en plusieurs parties, en particulier en deux parties,
    en ce qu'une première partie de la broche filetée à billes est disposée dans une zone de travail soumise à une contrainte et une seconde partie plus petite de la broche filetée à billes (14) est disposée dans une zone de travail non soumise à une contrainte, et
    en ce que la seconde partie de la broche filetée à billes (14) peut être précontrainte afin de soutenir la première partie de la broche filetée à billes (14).
  11. Machine de mise en forme selon l'une quelconque des revendications 9 ou 10,
    caractérisée en ce que
    un codeur rotatif (32) est disposé au niveau de la seconde partie de la broche filetée à billes (14) aux fins du contrôle de position et/ou de la régulation de position du support (30) et/ou de la broche principale (22) au niveau du porte-broche (20).
  12. Machine de mise en forme selon l'une quelconque des revendications 9 à 11,
    caractérisée en ce que
    un soutien à calotte est prévu afin de soutenir au moins une broche filetée à billes (14).
  13. Machine de mise en forme selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le mandrin de fluotournage (24) peut être relié par complémentarité de forme à la broche principale (22).
  14. Machine de mise en forme selon la revendication 13,
    caractérisée en ce que
    la liaison à complémentarité de forme entre le mandrin de fluotournage (24) et la broche principale (22) est réalisée sous la forme d'une denture Hirth.
  15. Machine de mise en forme selon l'une des revendications précédentes,
    caractérisée en ce que
    un dispositif éjecteur (18) est prévu avec une tête de pression et une contre-poupée (40) est prévue avec une rallonge de compression (47), au moyen desquelles le mandrin de fluotournage (24) peut être serré sur la broche principale (22).
  16. Machine de mise en forme selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    une contre-poupée (40) est prévue avec une broche de contre-poupée (41),
    en ce qu'une synchronisation de vitesse de rotation peut être réglée entre la broche principale (22) et la broche de contre-poupée (41), et
    en ce que la synchronisation de vitesse de rotation peut être commutée sur un mode de fonctionnement asservi au couple de rotation.
  17. Machine de mi que se en forme selon l'une quelconque des revendications 1 à 16,
    caractérisée en ce
    des rouleaux de pression (35) et/ou des unités radiales du support (30) sont montés de manière à pouvoir être ajustés les uns par rapport aux autres, et
    en ce que les rouleaux de pression (35) et/ou les unités radiales peuvent être ajustés sous une charge de manière axiale au moins d'un dispositif de réglage.
  18. Procédé pour l'emboutissage/ le fluotournage d'une pièce, en particulier avec une machine de mise en forme (1) selon l'une quelconque des revendications 1 à 16,
    dans lequel
    - la pièce (5) est disposée au niveau d'un mandrin de fluotournage (24) fixé au niveau de la broche principale (22),
    - la broche principale (22) est entraînée par un entraînement de broche principale (23), et
    - un support (30), au niveau duquel au moins un outil d'usinage (26) est disposé, est déplacé de manière relative par rapport au mandrin de fluotournage (24) pour la pression/pour le fluotournage de la pièce (5),
    caractérisé en ce que
    l'entraînement de broche principale (23) présente au moins deux moteurs d'entraînement avec respectivement un pignon d'entraînement, et
    en ce que la broche principale (22) présente une roue dentée d'entraînement, qui est entraînée par les pignons d'entraînement des moteurs d'entraînement.
  19. Procédé selon la revendication 18,
    caractérisé en ce que
    le support (30) et/ou le porte-broche (20) sont déplacés au moyen de plusieurs unités d'entraînement, qui fonctionnent selon un assemblage gantry.
  20. Procédé selon la revendication 18 ou 19,
    caractérisé en ce que
    la pièce (5) à usinage finalisé est retirée par glissement du mandrin d'outil avec un dispositif éjecteur (18) et/ou une unité de raclage (28).
EP15190545.2A 2015-10-20 2015-10-20 Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage Active EP3159068B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP15190545.2A EP3159068B1 (fr) 2015-10-20 2015-10-20 Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage
ES15190545.2T ES2665845T3 (es) 2015-10-20 2015-10-20 Máquina de conformación para presionar/laminar a presión y procedimiento para presionar/laminar a presión
CN201680013624.4A CN107427887B (zh) 2015-10-20 2016-07-27 用于旋压/挤压成型的成型机和旋压/挤压成型的方法
RU2017124611A RU2698236C2 (ru) 2015-10-20 2016-07-27 Формовочная машина для ротационного выдавливания/раскатки и способ ротационного выдавливания/раскатки
JP2017546692A JP6573677B2 (ja) 2015-10-20 2016-07-27 スピニング／フローフォーミングのための成形機およびスピニング／フローフォーミングのための方法
PCT/EP2016/067899 WO2017067682A1 (fr) 2015-10-20 2016-07-27 Machine de formage pour la compression/le fluotournage et procédé de compression/fluotournage
US15/545,853 US10888911B2 (en) 2015-10-20 2016-07-27 Forming machine for spinning/flow forming and method for spinning/flow forming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15190545.2A EP3159068B1 (fr) 2015-10-20 2015-10-20 Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage

Publications (2)

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EP3159068A1 EP3159068A1 (fr) 2017-04-26
EP3159068B1 true EP3159068B1 (fr) 2018-02-14

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EP15190545.2A Active EP3159068B1 (fr) 2015-10-20 2015-10-20 Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage

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Country Link
US (1) US10888911B2 (fr)
EP (1) EP3159068B1 (fr)
JP (1) JP6573677B2 (fr)
CN (1) CN107427887B (fr)
ES (1) ES2665845T3 (fr)
RU (1) RU2698236C2 (fr)
WO (1) WO2017067682A1 (fr)

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JP7217183B2 (ja) * 2019-03-25 2023-02-02 日本スピンドル製造株式会社 心押ユニットおよびスピニング加工装置

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Also Published As

Publication number Publication date
CN107427887A (zh) 2017-12-01
US20180015518A1 (en) 2018-01-18
WO2017067682A1 (fr) 2017-04-27
JP2018515341A (ja) 2018-06-14
US10888911B2 (en) 2021-01-12
RU2698236C2 (ru) 2019-08-23
CN107427887B (zh) 2020-02-07
EP3159068A1 (fr) 2017-04-26
RU2017124611A3 (fr) 2019-07-17
JP6573677B2 (ja) 2019-09-11
ES2665845T3 (es) 2018-04-27
RU2017124611A (ru) 2019-04-11

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