EP2008735B1 - Machine-outil et procédé destiné au transfert d'une partie d'une pièce à usiner depuis une position de support dans une position de déchargement - Google Patents

Machine-outil et procédé destiné au transfert d'une partie d'une pièce à usiner depuis une position de support dans une position de déchargement Download PDF

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Publication number
EP2008735B1
EP2008735B1 EP07012866A EP07012866A EP2008735B1 EP 2008735 B1 EP2008735 B1 EP 2008735B1 EP 07012866 A EP07012866 A EP 07012866A EP 07012866 A EP07012866 A EP 07012866A EP 2008735 B1 EP2008735 B1 EP 2008735B1
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EP
European Patent Office
Prior art keywords
support
workpiece part
machine tool
workpiece
tool 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
EP07012866A
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German (de)
English (en)
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EP2008735A1 (fr
Inventor
Friedrich Kilian
Frank Schmauder
Rainer Krämer
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.)
Trumpf Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE and Co KG
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Publication date
Priority to PL07012866T priority Critical patent/PL2008735T3/pl
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to DE502007007131T priority patent/DE502007007131D1/de
Priority to EP07012866A priority patent/EP2008735B1/fr
Priority to AT07012866T priority patent/ATE507910T1/de
Priority to US12/145,688 priority patent/US8256752B2/en
Priority to CN2008101285898A priority patent/CN101332568B/zh
Priority to JP2008171297A priority patent/JP5027068B2/ja
Publication of EP2008735A1 publication Critical patent/EP2008735A1/fr
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Publication of EP2008735B1 publication Critical patent/EP2008735B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools

Definitions

  • the invention relates to a machine tool for cutting a preferably plate-like workpiece, in particular a sheet, comprising: at least one support, which in a support position at its top supports a workpiece part completely cut from the workpiece, wherein the machine tool for bringing the workpiece part in a below the Exposed discharge position has a movement unit to move the support from the support position down.
  • the invention also relates to a method for bringing one of a preferably plate-like workpiece, in particular a sheet, completely cut workpiece part from a support position in which the workpiece part at the top of a support located in a support position supports, located in a location below the support discharge position.
  • JP 7214359 Generic prior art is known from JP 7214359 known.
  • a workpiece part stored in a support position on the upper side of two supporting rows of oscillating arms, which are mounted opposite one another, is moved, after being cut free, into a discharge position below the supports, by the two rows of oscillating arms being pivoted downwards.
  • the workpiece part is then moved by means of an unloading conveyor (conveyor belt) from the discharge position into a receiving position for receiving workpiece parts.
  • an unloading conveyor conveyor
  • the workpiece part can slide on rollers, which are attached to the swing arms.
  • JP10118879 Generic prior art is further from the JP10118879 known.
  • a workpiece part positioned in a support position on the upper side of a support located in a working plane is likewise brought into a discharge position situated below the working plane.
  • the support is lowered down and thereby pivoted about an axis of rotation, whereby the workpiece part along the support slidably reaches a discharge position laterally offset discharge position.
  • this object is achieved by the fact that the movement unit is designed to accelerate the support at least in the region of the resting workpiece part with an acceleration in the direction of gravity from the support position, which is greater than the acceleration of the workpiece part in the direction of gravity, and that the movement unit is designed , the accelerated circulation at such a speed in an out of the way move the workpiece part located opening position that the workpiece part in free fall reaches the discharge position.
  • the support from the support position is accelerated faster down than the workpiece part itself, so that this lifts in the support position of the edition.
  • the process reliability is increased because the workpiece part can not be offset laterally and so snagging on the remainder of the workpiece can be avoided.
  • the support is moved from the movement path of the workpiece part in a typically laterally located opening position, which prevents the workpiece part after lifting again meets the support and undisturbed can reach the discharge position.
  • each support is pivotally mounted about a preferably perpendicular to the direction of gravity axis of rotation.
  • the support in this case is usually oriented horizontally to store the workpiece part at the top.
  • the support is pivoted about the axis of rotation down to spend the workpiece part to the discharge position.
  • the support area of the workpiece part is arranged eccentrically to the rotation axis, so that the support during pivoting about the axis of rotation with a greater linear acceleration than the workpiece part itself can be accelerated.
  • the linear acceleration of the support from the support position out in the direction of gravity increases with the distance to the axis of rotation, so that the torque to accelerate the support can be chosen the lower the greater the distance of the support region from the axis of rotation.
  • each support is motion-coupled to the movement unit via a connecting piece, which acts on the support eccentrically to its axis of rotation, that is, the movement unit engages not directly on the axis of rotation of the edition. Lever action is achieved by the connecting piece and the synchronous pivoting of several supports is facilitated, as explained in more detail below.
  • the movement unit has at least one guide displaceably guided in the direction of gravity, on which the connecting pieces are preferably guided linearly displaceable at right angles to the direction of gravity.
  • the connecting pieces and thus the pads can be pivoted synchronously.
  • the connectors are in this case forcibly guided on the guide and are preferably displaced in the horizontal direction during the displacement of the guide in the direction of gravity along the guide.
  • the connecting pieces are rotatably mounted on the supports and mounted non-rotatably on the common guide. This makes it possible that the connecting pieces are moved parallel to the pivoting of the pads and perform no rotational movement.
  • a chute is provided on at least one of the connecting pieces, which protrudes at least in the opening position of the support in the movement path of the freely falling workpiece part.
  • the provision of a chute on the connecting piece is advantageous because it is moved downward during pivoting of the support and laterally, whereby the chute can protrude into the movement path without additional aids in the opening position of the support.
  • the provision of the chute is particularly advantageous if, in a partial region of the movement path, a structural unit such as, for a suction tube is mounted, which can be covered by the chute to prevent impact of the workpiece part on the assembly.
  • a fixed chute is provided for discharging the workpiece part from the discharge position.
  • the fixed chute can in this case adjoin the chute attached to the connecting piece and both can together move the path of movement of the workpiece piece downwards limit, ie set the discharge position that reaches the workpiece part in free fall.
  • the or each support for accelerating from the support position in a linear movement in the direction of gravity can be lowered, wherein the linear movement is preferably over a distance of at most 5 mm, in particular of at most 2 mm.
  • the support can be moved in different ways out of the movement path of the workpiece part in the direction of gravity, e.g. by the support is shifted at right angles to the direction of gravity.
  • the above-described pivoting of the support about an axis of rotation preferably follows the linear movement in order to transfer the support into the opening position.
  • the or each support is biased in the support position by a biasing means in the direction of gravity.
  • a biasing means in the direction of gravity.
  • the bias is generated by applying a force against the direction of gravity, which presses the pads against a force acting in the direction of gravity spring force or hydraulic force upwards.
  • the movement unit has a common drive for the synchronous pivoting of the supports and preferably for the synchronous movement of the supports during the linear movement.
  • the movement unit is designed to supply the or each support in the direction of gravity with an acceleration accelerate, which is greater than the gravitational acceleration and preferably at least two times, in particular at least three times the acceleration due to gravity.
  • an acceleration accelerate which is greater than the gravitational acceleration and preferably at least two times, in particular at least three times the acceleration due to gravity.
  • the force acting on the workpiece part in the support position no additional force acting in the direction of gravity, so that the workpiece part is accelerated from the support position with the acceleration of gravity and lift the support to the workpiece part of the edition must be accelerated with slightly higher acceleration.
  • two supports are provided, which are mounted on opposite sides about preferably parallel, spaced-apart axes of rotation pivotably.
  • the fall path of the workpiece part from the support position to the discharge position generally corresponds at least to the width of the support perpendicular to the axis of rotation, since this is usually pivoted by 80 ° or more in order to reach the opening position located outside the movement path.
  • the width of the workpiece parts, which can be brought into the discharge position is limited by the width of the support.
  • a suction opening is provided in the support for sucking off gases and / or rejects produced during the cutting process.
  • the suction opening is usually arranged in a processing position of the machine tool, for example, below a laser processing head, and serves for discharging rejects as well as gases generated in the laser processing on the workpiece.
  • the suction opening is usually connected to a suction device via a suction tube arranged under the support.
  • the suction tube When moving the support in the open position, the suction tube in the way and can be moved, for example by means of the drive described above down.
  • the chute attached to the connecting piece can in this case be dimensioned such that it defines the pipe opening covers the suction tube when the support is in the open position.
  • At least one sensor preferably at least one light barrier, is provided for detecting the reaching of the discharge position by the workpiece part.
  • the support or pads can be moved from the open position back to the support position and the workpiece processing can be continued.
  • the service life of the machine tool is reduced and at the same time the process reliability is increased, since the absence of the detection signal generates an error signal and the further processing can be initially set to avoid damage.
  • a series of light barriers arranged side by side is used which form a light grid for monitoring a surface area at the discharge position.
  • the support in the support position at least partially closes an opening in a processing table of the machine tool.
  • the support here is usually aligned horizontally in the support position and arranged at the height of the editing table.
  • the support position may also be defined at a position below the work table, e.g. if initially a slow lowering of the support should be done with the workpiece part mounted on the top.
  • At least one support is attached to a displacement device for displacing the support along the processing table.
  • the movable support opposite support is usually mounted on the machining table.
  • the movable support can be moved out of a position in which it adjoins the additional support and together with this closes the opening in the processing table, be moved away by means of the displacement device of the further support, so that a gap arises between them.
  • This is favorable if workpiece parts are to be brought into the discharge position, which have a greater width in the direction of displacement than the sum of the widths of the two supports.
  • the movable support is moved until the workpiece part only at its opposite ends on the two pads and not on rests on the working table. Once the slidable flap has reached such a position, the pads are accelerated out of the support position as described above.
  • the object is achieved by a method with the following steps: accelerating the support from the support position at least in the region of the resting workpiece part in the direction of gravity with an acceleration that is greater than an acceleration of the workpiece part in the direction of gravity, and moving the accelerated support with a such speed in an opening position located outside the movement path of the workpiece part that the workpiece part reaches the discharge position in free fall.
  • the inventive method makes it possible to spend the workpiece part quickly and safely to the discharge position.
  • the or each support for accelerating from the support position is preferably lowered in a linear movement in the direction of gravity, wherein the linear movement is preferably over a distance of at most 5 mm, in particular of at most 2 mm.
  • the linear movement and workpiece parts can be lifted from the top of the support, which are arranged at the top of the support in the vicinity of the axis of rotation, which would require a very high acceleration in a pure rotary motion.
  • each support is pivoted about a preferably perpendicular to the direction of gravity axis of rotation to accelerate the support at least in the region of the resting workpiece part and / or to move the accelerated support in an out of the movement path of the workpiece part opening position.
  • Particularly advantageous is a combination of a linear movement in which the workpiece part is lifted from the support and a subsequent rotational movement to move the support from the movement path of the workpiece part.
  • Fig. 1 shows a trained as a laser punch press machine tool 1 , which has a conventional punching device 3 and a laser processing head 4 as tools for processing a sheet serving as a workpiece 2 .
  • the workpiece 2 to be machined supports on a processing table 5 during workpiece machining.
  • a conventional holding device 6 which has clamps 7 for holding the workpiece 2
  • the workpiece 2 can be displaced relative to the stationary punching device 3 and the laser processing head 4 in the X direction of the sheet plane (XY plane of an XYZ coordinate system).
  • the workpiece 2 In the Y-direction of the sheet plane, the workpiece 2 can be moved by displacing the machining table 5 together with the holding device 6 relative to a base 8 on which the working table 5 is supported by means of a conventional coordinate guide (not shown).
  • the workpiece 2 can thus be moved in the X and Y directions relative to the punching device 3 and the laser processing head 4, so that each to machining area of the workpiece 2 in a stationary processing area 9 of the punching device 3 and a limited by a substantially circular suction opening 10 in the processing table 5 processing area 11 of the laser processing head 4 can be spent.
  • the suction opening 10 serves for the extraction of gases generated during workpiece machining by the laser processing head 4 and of reject parts.
  • the portion of the workpiece table 5 in the X direction, on which the processing areas 9, 11 are formed, is stationary and is not displaced in the Y direction relative to the base 8, so that the suction opening 10 is always positioned below the laser processing head 4.
  • the latter is activated in order to completely cut out, for example, a rectangular workpiece part 12 from the workpiece 2.
  • the workpiece part 12 rests in the sheet plane on two adjacent, positioned in the sheet metal supports 13a, 13b in the form of flaps.
  • the first support 13 a is arranged directly below the laser processing head 4 and has the suction opening 10 defining the processing region 11.
  • the supports 13a, 13b can be pivoted on opposite sides 14a, 14b about two parallel axes of rotation 15a, 15b .
  • the axes of rotation 15a, 15b are in this case arranged at a distance which is twice the width (2 b ) of the two supports 13a, 13b in the Y direction.
  • Workpiece parts which are dimensioned larger in the Y-direction than this distance can be used for the in Fig. 1 shown positioning of the pads 13a, 13b are not spent in the discharge position.
  • the second support 13b is attached to a displacement device 16 in the form of a sliding table and can be moved together with this in the Y direction in the sheet plane. This increases the distance between the two axes of rotation 15a, 15b in the Y direction and between the two supports 13a, 13b, an opening (not shown) is formed in the processing table 5.
  • the second edition 13b is in this case postponed until the workpiece part rests only at its opposite ends on the upper sides of the two supports 13a, 13b and no longer on the workpiece table 5 itself.
  • FIGS. 2a -c schematically show process steps of the movement of the pads 13a, 13b in this process, the second flap 13b in the Y direction as in FIG Fig. 1 is shown positioned.
  • Fig. 2a are the supports 13a, 13b at the support position P in the sheet metal plane of the machining table 5 and the workpiece part 12 is mounted on the upper sides.
  • the two supports 13a, 13b To spend the workpiece part 12 in free fall to the discharge position W, the two supports 13a, 13b from the support position P out with an acceleration a A in gravitational force 17 (corresponding to the negative Z direction) linearly accelerated downwards, which is three times the force acting on the workpiece part 12 gravitational acceleration a G corresponds. Due to the linear movement of the supports 13a, 13b down over a distance d of about 3 mm, the workpiece part 12 is lifted from the supports 13a, 13b, as in Fig. 2b is shown. Subsequently, the two supports 13a, 13b pivoted about their respective axes of rotation 15a, 15b, as indicated by arrows in Fig.
  • the workpiece part 12 initially on the upper side of the pads 13a, 13b stored by means of a linear movement by a distance of eg a few millimeters are moved to a support position below the sheet metal plane to avoid entanglement of the workpiece part (not shown) remaining workpiece , From this lowered position out of the above movement can then be performed.
  • the supports 13a, 13b they can also be moved in another way out of the movement path 18 of the workpiece part 12, eg in a linear movement perpendicular to the direction of gravity 17.
  • FIGS. 3a , b and Fig. 4 each detail views of a lower part of the machine tool 1 of Fig. 1 show how the in FIGS. 2a-c described sequence of movements can be realized structurally.
  • an in Fig. 3a shown movement unit which has an electric motor drive 19 which is coupled via a toothed belt 20 with a guided in an overload-proof bearing 21 threaded spindle 22 .
  • the threaded spindle 22 of the movement unit has a spindle nut 23 , which can be moved in and against the direction of gravity 17.
  • the spindle nut 23 is attached to a guide 24 , which in turn is guided in a longitudinal plate 25 in and against the direction of gravity 17 linearly displaceable.
  • the guide 24 has a horizontally extending guide rail 27 , in which two connecting pieces 28a, 28b are guided linearly displaceable.
  • the connecting pieces 28a, 28b respectively engage the supports 13a, 13b in an eccentric manner relative to the axes of rotation 15a, 15b and are rotatably mounted on them while they are guided non-rotatably along the guide rail 27. If the spindle nut 23 is moved downward by means of the drive 19, the guide 24 is lowered and the connecting pieces 28a, 28b guided on the guide rail 27 are entrained. During this movement, the connecting pieces 28a, 28b are displaced horizontally along the guide rail 27 due to the non-rotatable mounting. Due to the eccentric to the axes of rotation 15 a, 15b attacking connectors 28a, 28b, the pads 13a, 13b are pivoted downward from its horizontal position during this movement.
  • the axis of rotation 15a is rotatably mounted on a support plate 29 extending in a vertical, ie in the direction of gravity 17.
  • the support plate 29 is guided on a further, also in the direction of gravity 17 extending plate 30 of a (not shown) transverse frame and under application of a force against the direction of gravity 17 by means of a Anschag Anlagen 31 prestressed, which (not shown) spring unit as a shock absorber and a (not shown) has hydraulic piston.
  • the support plate 29 and thus the bearing of the axis of rotation 15a is pressed by the force applied by the connecting pieces 28a, 28b against the direction of gravity 17 force against the force acting in the direction of gravity 17 spring or hydraulic force upwards, typically with a stroke of approx. 3-5 mm.
  • Fig. 4 shows the pads 13a, 13b after completion of the above movement in an open position in which they have been completely pivoted and enclose an angle of approximately 80 ° with the plane of the sheet.
  • a chute 32 is attached to the first connector 28 a, as well as in Fig. 3b can be seen more clearly.
  • the chute 32 is taken down and protrudes in the opening position of the supports 13a, 13b in the (not shown) movement path of the workpiece part.
  • the connection piece 28a mounted chute 32 includes in the opening position of the supports 13a, 13b directly to a solid chute 33 at.
  • a free-falling workpiece part thus meets at its discharge position either on the fixed chute 33 or on the first connector 28 a fixed, hereinafter referred to as movable chute 32 and can be removed in a sliding movement of the working area of the machine tool 1.
  • the movable chute 32 provided in addition to the fixed chute 33 is required to cover a suction pipe 34 which in the supporting position communicates with the suction opening 10 of the first support 13a.
  • the suction pipe 34 is located at the in Fig. 3a attached spindle nut 23 is fixed and is taken along with their displacement in the direction of gravity 17 down.
  • An end piece 35 of the suction tube 34 is attached to the first support 13a and is pivoted therewith, as in FIG Fig. 4 is shown.
  • a (not shown) beam catcher is provided at the lower end to intercept the laser beam passing through the suction opening 10 laser beam.
  • the reaching of the discharge position of a workpiece part is detected by a light grid 36 , which is formed in the horizontal direction at the level of the transition between the fixed chute 33 and the movable chute 32 by a series of light barriers.
  • the light barriers each consist of a light source 37 and an associated sensor 38 . It is understood that the discharge position at which the workpiece part in free fall impinges on the chutes 32, 33, depends on the dimensioning of the workpiece part, ie, the workpiece part may optionally First completely impinge on the moving chute 32 and only pass the light grid 36 when sliding down on the solid chute.
  • the pads 13a, 13b should be moved back to the starting position as soon as possible after detecting the workpiece part at the discharge position in order to resume workpiece machining as quickly as possible, but can be prevented by the arrangement of the light grid 36 below the movable chute 32 that the support 13a is pivoted upwards too early and if necessary entrains a workpiece part still resting on it.
  • a discharge in the manner described above can also be used advantageously on other machine tools, for example on stamping and bending machines, in which the workpiece parts are still bent after the free cutting, before they are moved out of the support position into the discharge position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Turning (AREA)
  • Feeding Of Workpieces (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Punching Or Piercing (AREA)

Claims (19)

  1. Machine-outil (1) pour l'usinage coupant d'une pièce (2) de préférence du genre plaque, en particulier d'une tôle, comprenant :
    au moins un support (13a, 13b) qui, dans une position de support (P), supporte sur sa face supérieure une partie de pièce (12) qui est totalement séparée de la pièce (2) par découpage,
    sachant que la machine-outil (1), afin de transférer la partie de pièce (12) dans une position de déchargement (W) située en dessous du support (13a, 13b), présente une unité de déplacement (19 à 24) pour déplacer le support (13a, 13b) vers le bas à partir de la position de support (P),
    caractérisée en ce que l'unité de déplacement (19 à 24) est conçue pour accélérer le support (13a, 13b) à partir de la position de support (P), au moins dans la région de la partie de pièce supportée (12), avec une accélération (aA) dans la direction de la pesanteur (17) qui est supérieure à l'accélération (aG) de la partie de pièce (12) dans la direction de la pesanteur (17),
    et en ce que l'unité de déplacement (19 à 24) est conçue pour déplacer le support accéléré (13a, 13b) dans une position ouverte (O) située en dehors de la trajectoire de déplacement (18) de la partie de pièce (12), avec une vitesse telle que la partie de pièce (12) atteint en chute libre la position de déchargement (W).
  2. Machine-outil selon la revendication 1, caractérisée en ce qu'au moins un et de préférence chaque support (13a, 13b) est monté à pivotement autour d'un axe de rotation (15a, 15b) s'étendant de préférence perpendiculairement à la direction de la pesanteur (17).
  3. Machine-outil selon la revendication 2, caractérisée en ce qu'au moins un et de préférence chaque support (13a, 13b) est couplé en déplacement à l'unité de déplacement (19 à 24) par l'intermédiaire d'une pièce de liaison (28a, 28b) qui agit sur le support (13a, 13b) excentriquement à l'axe de rotation (15a, 15b) de ce dernier.
  4. Machine-outil selon la revendication 3, caractérisée en ce que l'unité de déplacement (19 à 24) présente au moins un guide (24) guidé en translation dans la direction de la pesanteur (17), sur lequel les pièces de liaison (28a, 28b) sont guidées en translation linéaire de préférence perpendiculairement à la direction de la pesanteur (17).
  5. Machine-outil selon la revendication 4, caractérisée en ce que les pièces de liaison (28a, 28b) sont montées à rotation sur les supports (13a, 13b) et sans possibilité de rotation sur le guide commun (24).
  6. Machine-outil selon l'une des revendications 3 à 5, caractérisée en ce qu'une goulotte (32) est prévue sur au moins une (28a) des pièces de liaison, goulotte qui, au moins dans la position ouverte (O) du support (13a), pénètre dans la trajectoire de déplacement (18) de la partie de pièce (12) en chute libre.
  7. Machine-outil selon l'une des revendications précédentes, caractérisée en ce qu'une goulotte fixe (33) est prévue pour évacuer la partie de pièce (12) de la position de déchargement (W).
  8. Machine-outil selon l'une des revendications précédentes, caractérisée en ce que le ou chaque support (13a, 13b) peut, pour l'accélération à partir de la position de support (P), être abaissé en un mouvement linéaire dans la direction de la pesanteur (17), sachant que le mouvement linéaire s'effectue de préférence sur une distance d'au plus 5 mm, en particulier d'au plus 2 mm.
  9. Machine-outil selon l'une des revendications précédentes, caractérisée en ce que le ou chaque support (13a, 13b) est, dans la position de support (P), précontraint dans la direction de la pesanteur (17) par un moyen de précontrainte (31).
  10. Machine-outil selon l'une des revendications précédentes, caractérisée en ce que l'unité de déplacement (19 à 24) présente un entraînement commun (19) pour le pivotement synchrone des supports (13a, 13b), et de préférence pour le déplacement synchrone des supports (13a, 13b) pendant le mouvement linéaire.
  11. Machine-outil selon l'une des revendications précédentes, caractérisée en ce que l'unité de déplacement (19 à 24) est conçue pour accélérer le ou chaque support (13a, 13b) dans la direction de la pesanteur (17) avec une accélération qui est supérieure à l'accélération de la pesanteur et est de préférence égale à au moins le double et notamment au moins le triple de l'accélération de la pesanteur.
  12. Machine-outil selon l'une des revendications précédentes, caractérisée en ce qu'il est prévu deux supports (13a, 13b), qui sont montés à pivotement sur des côtés mutuellement opposés (14a, 14b) autour d'axes de rotation (15a, 15b) parallèles et mutuellement distants.
  13. Machine-outil selon l'une des revendications précédentes, caractérisée en ce qu'une ouverture d'aspiration (10) est prévue dans le support (13a) pour aspirer les gaz et/ou les déchets produits lors de l'usinage coupant.
  14. Machine-outil selon l'une des revendications précédentes, caractérisée en ce qu'au moins un capteur, de préférence au moins un barrage photoélectrique (37, 38), est prévu pour détecter l'atteinte de la position de déchargement (W) de la partie de pièce (12).
  15. Machine-outil selon l'une des revendications précédentes, caractérisée en ce que le support (13a, 13b), dans la position de support (P), ferme au moins partiellement une ouverture dans un plateau d'usinage (5) de la machine-outil (1).
  16. Machine-outil selon la revendication 15, caractérisée en ce qu'au moins un support (13b) est fixé sur un dispositif de translation (16) pour déplacer en translation le support (13b) le long du plateau d'usinage (5).
  17. Procédé pour transférer une partie de pièce (12) totalement séparée par découpage d'une pièce (2) de préférence du genre plaque, notamment d'une tôle, à partir d'une position de support (P) dans laquelle la partie de pièce (12) est supportée sur la face supérieure d'au moins un support (13a, 13b), dans une position de déchargement (W) située en dessous du support (13a, 13b), caractérisé en ce qu'il comprend les étapes suivantes :
    accélération du support (13a, 13b) à partir de la position de support (P), au moins dans la région de la partie de pièce supportée (12), avec une accélération (aAF) dans la direction de la pesanteur (17) qui est supérieure à une accélération (aW) de la partie de pièce (12) dans la direction de la pesanteur (17), et
    déplacement du support accéléré (13a, 13b) dans une position ouverte (O) située en dehors de la trajectoire de déplacement (18) de la partie de pièce (12), avec une vitesse telle que la partie de pièce (12) atteint en chute libre la position de déchargement (W).
  18. Procédé selon la revendication 17, caractérisé en ce que le ou chaque support (13a, 13b) est, pour l'accélération à partir de la position de support (P), abaissé en un mouvement linéaire dans la direction de la pesanteur (17), sachant que le mouvement linéaire s'effectue de préférence sur une distance d'au plus 5 mm, en particulier d'au plus 2 mm.
  19. Procédé selon la revendication 17 ou 18, caractérisé en ce qu'un et de préférence chaque support (13a, 13b) est pivoté autour d'un axe de rotation (15a, 15b) s'étendant de préférence perpendiculairement à la direction de la pesanteur (17), afin d'accélérer le support (13a, 13b) au moins dans la région de la partie de pièce supportée (12), et/ou de déplacer le support accéléré (13a, 13b) dans une position ouverte (O) située en dehors de la trajectoire de déplacement (18) de la partie de pièce (12).
EP07012866A 2007-06-30 2007-06-30 Machine-outil et procédé destiné au transfert d'une partie d'une pièce à usiner depuis une position de support dans une position de déchargement Active EP2008735B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE502007007131T DE502007007131D1 (de) 2007-06-30 2007-06-30 Werkzeugmaschine und Verfahren zum Verbringen eines Werkstückteils aus einer Auflageposition in eine Abfuhrposition
EP07012866A EP2008735B1 (fr) 2007-06-30 2007-06-30 Machine-outil et procédé destiné au transfert d'une partie d'une pièce à usiner depuis une position de support dans une position de déchargement
AT07012866T ATE507910T1 (de) 2007-06-30 2007-06-30 Werkzeugmaschine und verfahren zum verbringen eines werkstückteils aus einer auflageposition in eine abfuhrposition
PL07012866T PL2008735T3 (pl) 2007-06-30 2007-06-30 Obrabiarka i sposób przemieszczania części detalu z pozycji podpierania w pozycję odprowadzania
US12/145,688 US8256752B2 (en) 2007-06-30 2008-06-25 Removing a processed part
CN2008101285898A CN101332568B (zh) 2007-06-30 2008-06-27 机床和将工件部分从支撑位置移至卸出位置的方法
JP2008171297A JP5027068B2 (ja) 2007-06-30 2008-06-30 ワーク部分を支持位置から搬出位置もたらすための工作機械およびその方法

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EP07012866A EP2008735B1 (fr) 2007-06-30 2007-06-30 Machine-outil et procédé destiné au transfert d'une partie d'une pièce à usiner depuis une position de support dans une position de déchargement

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EP2008735A1 EP2008735A1 (fr) 2008-12-31
EP2008735B1 true EP2008735B1 (fr) 2011-05-04

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US (1) US8256752B2 (fr)
EP (1) EP2008735B1 (fr)
JP (1) JP5027068B2 (fr)
CN (1) CN101332568B (fr)
AT (1) ATE507910T1 (fr)
DE (1) DE502007007131D1 (fr)
PL (1) PL2008735T3 (fr)

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Also Published As

Publication number Publication date
JP2009012171A (ja) 2009-01-22
US20090035117A1 (en) 2009-02-05
ATE507910T1 (de) 2011-05-15
DE502007007131D1 (de) 2011-06-16
CN101332568A (zh) 2008-12-31
US8256752B2 (en) 2012-09-04
EP2008735A1 (fr) 2008-12-31
JP5027068B2 (ja) 2012-09-19
PL2008735T3 (pl) 2011-10-31
CN101332568B (zh) 2010-08-04

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