WO2021000976A1 - Dispositif de fixation détachable d'une pièce à usiner, bâti pour recevoir au moins un dispositif de ce type et procédé pour assurer el support de la pièce à usiner - Google Patents

Dispositif de fixation détachable d'une pièce à usiner, bâti pour recevoir au moins un dispositif de ce type et procédé pour assurer el support de la pièce à usiner Download PDF

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Publication number
WO2021000976A1
WO2021000976A1 PCT/DE2019/100609 DE2019100609W WO2021000976A1 WO 2021000976 A1 WO2021000976 A1 WO 2021000976A1 DE 2019100609 W DE2019100609 W DE 2019100609W WO 2021000976 A1 WO2021000976 A1 WO 2021000976A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
frame
support strut
individual
bearing ball
Prior art date
Application number
PCT/DE2019/100609
Other languages
German (de)
English (en)
Inventor
Rupert Hune
Ludwig BORCHERT
Original Assignee
Josef Weischer GmbH & Co. KG
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 Josef Weischer GmbH & Co. KG filed Critical Josef Weischer GmbH & Co. KG
Priority to DE112019007361.3T priority Critical patent/DE112019007361A5/de
Priority to PCT/DE2019/100609 priority patent/WO2021000976A1/fr
Publication of WO2021000976A1 publication Critical patent/WO2021000976A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/03—Stationary work or tool supports
    • B23Q1/035—Stationary work or tool supports with an array of longitudinally movable rods defining a reconfigurable support surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • B23Q1/32—Relative movement obtained by co-operating spherical surfaces, e.g. ball-and-socket joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/08—Work-clamping means other than mechanically-actuated
    • B23Q3/088—Work-clamping means other than mechanically-actuated using vacuum means

Definitions

  • Device for releasably fixing a workpiece to be machined, frame for receiving at least one such device and method for
  • the invention relates to a device for releasably fixing a workpiece to be machined, a frame for receiving at least one such device and a method for supporting the workpiece to be machined.
  • a device for releasably fixing a uniformly curved surface of a panel-shaped workpiece to be processed is known, the workpiece to be processed being a large-area, curved laminate sheet.
  • the device known from this publication has a housing in which several support struts are mounted such that they can be moved in a translatory manner, so that they can be adapted to the curvature of the workpiece.
  • mounts for fixing a profile are arranged, to which suction cups are attached, which are connected to a vacuum generating device.
  • the support struts, the brackets, the profile and the suction cups together form a unit for fixing one side of the workpiece to be machined.
  • machining can, for example, be a machining process, that is, a milling process, drilling process or cutting process.
  • the individual support struts or brackets must not be in the way of the machining tools and must also clamp the workpiece in such a way that it can be fixed without developing deformations or internal stresses. This is the only way to ensure high quality and accurate machining of the workpiece.
  • the invention is based on the object of providing a device which is able to precisely and reliably fix even complex geometries of a workpiece in order to simplify its processing overall and to achieve high dimensional accuracy.
  • a frame for holding the workpiece should be specified, which can be used as flexibly as possible and can be adapted to different workpieces with short changeover times.
  • a method should be specified with which at least one device accommodated in the frame can be adapted to the structure of the workpiece.
  • a device for the detachable fixation of a workpiece to be machined in which the device has at least one support strut, the end of which facing the workpiece is equipped with a workpiece carrier directly or indirectly adjacent to the workpiece surface, was further developed according to the invention to the effect that the end of the support strut opposite the workpiece is pivotable, rotatable and adjustable in its axial length in a housing of the device.
  • the support struts can even be used for workpieces whose surface to be fixed has a wave contour with different dimensions of the individual waves and valleys.
  • the device according to the invention is thus also suitable for fixing the workpiece in areas that were previously inaccessible for fixing or clamping.
  • a very advantageous example for implementing the rotation and / or pivotability of the support struts can be seen in the fact that the support strut has a ball joint at its end opposite the workpiece. With a ball joint, rotating and swiveling movements, i.e. movements in several degrees of freedom, can be implemented. The construction of such a ball joint is relatively simple and space-saving, which is of particular importance in a device according to the invention.
  • the ball joint has a bearing ball which is connected to the support strut and which is movably supported in the housing of the device.
  • the bearing ball can be placed on the support strut or formed on the support strut.
  • the support strut is guided through a central, circular-cylindrical bore in the bearing ball so that the support strut penetrates the bearing ball.
  • a bearing shell can also be provided which receives the bearing ball in the housing of the device. It is possible to use a plastic bearing shell or a metallic bearing shell as the bearing shell. The selection of the appropriate materials for the bearing shell is based on the expected loads that are to be expected from the workpiece to be clamped or fixed. Since the setting of the position of the support strut of the device to match the surface of the workpiece to be fixed must be as flexible as possible, a further proposal of the invention is to equip the bearing ball with several slots made in its outer surface.
  • the slots allow a centripetal bracing of the bearing ball, that is to say towards the geometric center point of the bearing ball, so that, due to the elasticity of the bearing ball, clamping units can act directly on the bearing ball, thereby fixing the support strut guided within the bearing ball in any desired position.
  • the course of the slots in the bearing ball is adapted to the expected loads.
  • the slots that completely penetrate the bearing ball can run in a meandering manner or alternately, in mutually opposite directions, can be introduced into the bearing ball beyond the equator of the bearing ball.
  • Other shapes of the slots are of course possible, which can result from empirical experience or from tests in order to achieve the best possible clamping results for the support strut.
  • a further development measure according to the invention is that the ball joint and here in particular the bearing ball for aligning the support strut can be fixed in a position suitable for fixing the workpiece by means of a pneumatic, hydraulic or electromagnetic clamping mechanism . It is of particular importance here that preferably, but not necessarily, no mechanical tensioning mechanisms are used, but that the support struts can be fixed in the desired position as automatically as possible.
  • the alignment can be automated, for example, in that a program-controlled robot aligns the support struts directly in their position suitable for fixing the workpiece using specified CAD data, so that after the alignment that has taken place in this way, the Support struts the clamping mechanism is used, which fixes the support struts in the area of the ball joint.
  • the clamping mechanism received in the housing of the device for spherical clamping of the bearing ball of the ball joint has at least one piston, in particular a pneumatic piston, a spring energy store with clamping jaws, an electromagnet or a hydraulic ram. If necessary, a wedge gear with a pneumatic piston can also be used here.
  • the tensioning mechanisms are devices that engage the outer surface of the bearing ball and tension it in the centripetal direction, so that the support strut guided in the bearing ball is fixed in this way.
  • the workpiece can be fixed in a particularly simple manner with the device according to the invention if the workpiece carrier receives a contour segment as part of a vacuum generating device and the contour segment has a suction line that penetrates this and the suction opening of which is located in a contact surface of the contour segment that is complementary to the workpiece to be fixed.
  • the workpiece is sucked in with a negative pressure and in this way is releasably fixed on the contour segment.
  • negative pressure refers to a pressure that is lower than the normal air pressure.
  • a “vacuum” is often used in this context.
  • the contour segment therefore has a suction line which penetrates the contour segment and whose suction opening is located in the contact surface of the contour segment, which is designed to be complementary to the workpiece.
  • the contour segment has elastic properties and, for this purpose, has a corresponding one
  • material which can be, for example, a plastic or an elastomer material. Foam-like materials also appear suitable for this purpose.
  • a contour seal is integrated into the contact surface of the contour segment, which is complementary to the workpiece, which surrounds the suction openings in the contact surface so that a suction surface of the contour segment is formed.
  • the contour seal preferably rests against the surface of the workpiece in the edge area of the contour segment.
  • the contour seal according to an advantageous embodiment of the invention can be designed as a lip profile inserted into a groove-shaped recess of the contour segment, the groove-shaped recess being integrated into the contact surface of the contour segment facing the workpiece.
  • the groove it is possible to design the groove as an L-shaped groove in which a vacuum lip profile is inserted as a contour seal.
  • the workpiece carrier also forms part of the negative pressure generating device and has a suction line connected to the suction line of the contour segment in a flow-conducting manner. In this way, the negative pressure can be guided via the suction line of the workpiece carrier into the contour segment, where it is ultimately used in the manner described above to suck in the workpiece.
  • the flow-conducting connection to the existing suction lines can be implemented, for example, via a suction line connection which, for example, forms part of the workpiece carrier. That way is the suction line connection is easily accessible, which is particularly advantageous during installation and during maintenance and / or repair work.
  • the support strut is designed to be hollow and the inner cavity of the support strut is designed as a suction line of the vacuum generating device.
  • the inner cavity of the support strut can also be used to accommodate and lay supply lines, which makes the entire device very compact overall and helps to reduce or completely avoid sources of interference or damage to the supply lines. In this way, external line routings are avoided, which significantly simplifies the flow routing or the line routing overall and also saves cost-intensive components.
  • the hollow support strut has a connection at its end opposite the clamping side for this purpose, which connection is used for coupling to the vacuum generating device.
  • this can be a bore that receives the connection of the negative pressure generating device, for example via a thread introduced into the bore.
  • a significant feature of the device according to the invention is also to be seen in the fact that the workpiece carrier has an adjusting element which, when the support strut is completely lowered, is engaged in a corresponding recess in the housing of the device that is complementary to the adjusting element.
  • Such an adjusting element is used to calibrate the device. Starting from the “zero position” defined in this way, the device can then be aligned within a spatial coordinate system and thus on the surface of the workpiece to be fixed using specified CAD data be adjusted.
  • the adjusting element is thus an essential aid for the automated setting of the device in adaptation to the work piece.
  • a frame for receiving at least one device according to the invention is particularly characterized in that the housing of the device is attached to a support plate of the frame which has a suitable recess to ensure the pivoting movement of the support strut.
  • the frame is composed of several, interchangeable individual frames, which together are adapted or at least approximated to the contour of the workpiece to be fixed.
  • the advantage of such a design of a frame is its modular design, which can be flexibly adapted to changing workpieces.
  • the effort for the storage of the individual frames is justifiable low.
  • the storage of the workpiece can be optimized overall by means of such a frame.
  • the individual frames are detachably connected to one another.
  • Quick release mechanisms are preferably used as releasable connections so that the frame can be adapted to another workpiece within a short changeover time.
  • the frame is therefore very flexible to handle and can be used for very different purposes.
  • each individual frame consists of a large number of individual struts and thus Is executed like a framework and in a lightweight construction.
  • a lightweight construction includes, for example, the execution of the frame from lightweight materials such as aluminum or brass.
  • the frame as a whole and each individual frame in particular can thus be designed to be weight-saving, which has a positive effect, for example, when exchanging individual frames or during their transport.
  • Alignment element present entirely in the workpiece carrier
  • the robot Starting from the neutral position of the device thus defined, the robot then moves the support strut so far that the workpiece carrier assumes a storage position for the workpiece specified by the CAD data,
  • the method according to the invention enables almost complete automation of the clamping and changing of a workpiece, the composition of the frame from several individual frames in adaptation to the workpiece to be stored can be automated if program-controlled robots are used.
  • the particular advantage of the solution presented here is that the structurally specified CAD data of a workpiece can be used directly to insert the necessary devices into the frame and then to align them by means of the robot so that they match the surface of the workpiece to be processed or the workpiece to be measured are optimally adapted overall.
  • the workpiece can thus be fixed tension-free and tolerance-free, which is a considerable advantage for the quality of the measurement or processing of the workpiece.
  • the robot After the activation of the individual clamping mechanisms and the resulting fixation of the individual devices in their set position and before the workpiece is placed on the workpiece carriers of the individual devices aligned in the frame, the robot, according to the invention, still accurately positions the individual devices with their respective workpiece carriers Measure once and thus check the exact setting for receiving the workpiece.
  • the automation of all processes is present in the sense of the invention, which is why at least one robot is preferably used, which takes over all or predominant activities here.
  • the robot can also place the workpiece on the workpiece carriers of the devices.
  • manual placement of the workpiece is still possible.
  • Figure 1 a device for releasably fixing a to be processed
  • FIG. 2 a section of the interior of the housing of the device from FIG. 1,
  • Figure 3 a shown in a three-dimensional view of the bearing ball
  • Figure 4 an example of a device for releasably fixing a to
  • Figure 5 several devices in different positions for the
  • FIG. 6 a workpiece to be fixed with a curved surface in a three-dimensional view
  • FIG. 7 a single frame as part of a frame for receiving at least one device
  • Figure 8 a frame with several devices received therein
  • Figure 9 the frame from Figure 8 with one through the devices
  • Figure 10 a composed of several individual frames frame for
  • FIG. 1 shows a device, denoted overall by 1, for releasably fixing a workpiece 2, not shown here.
  • the device 1 has a support strut 3 with a workpiece carrier 5 fastened to its upper, free end.
  • the support strut 3 is mounted in a housing 6 so that it can rotate about its longitudinal axis, be pivotable and displaceable along its axial direction.
  • a ball joint 7 is used to mount the support strut 3, the bearing ball 8 of which is received in the housing 6.
  • the bearing ball 8 In its outer surface, the bearing ball 8 has a plurality of slots 10 and 11, which run in the axial direction and are distributed over its circumference. Through the slots 10, 11, the bearing ball 8 can be clamped in the centripetal direction, i.e.
  • the support strut 3 has the workpiece carrier 5, which in the example shown also has a suction line connection 22 by means of which there is a connection to a vacuum generating device of the device 1.
  • a negative pressure can be passed on via the suction line 21 of the workpiece carrier 5 to a contour segment 14 which is arranged on the workpiece carrier 5 but is not shown in FIG.
  • the surface 32 of the workpiece carrier 5, which also forms its upper side is used, whereby the contour segment 14 can be fixed to the workpiece carrier 5, for example via a zero point clamping system.
  • an adjusting element 43 is formed on the workpiece carrier 5, the contour of which engages with an exact fit in a corresponding recess 35 in the housing 6 when the support strut 3 is in its axially lowermost position.
  • the adjusting element 43 has a height h which corresponds to the depth of the recess 35.
  • the position of the adjusting element 43, which is completely indented into the recess 35, is used the calibration of the entire device 1 and in this case can also be referred to as the “zero position”.
  • the contact points on the surface of the workpiece to be stored or fixed in space are precisely defined and determined.
  • the support strut 3 is at least partially hollow and consequently has an inner cavity 23.
  • This inner cavity 23 can be used for various purposes.
  • the hollow support strut 3 has a suction line connection 33 at its end facing away from the workpiece 2, which in the simplest case can be a bore with a thread for fixing a corresponding suction line connection.
  • Another possibility of using the inner cavity 23 consists in laying supply lines, which can be electrical lines, pneumatic lines or others.
  • This type of laying has the advantage that the supply lines are protected from damage and, in addition, are not a hindrance in the outer area of the device 1, for example when processing the workpiece 2 to be fixed.
  • FIG. 2 The interior of the housing 6 of the device 1 from FIG. 1 can be seen from FIG. 2, so that the components of the device 1 accommodated in the housing 6 can be seen. From this it can be seen more clearly than was possible in connection with the description of FIG. 1 that the support strut 3 penetrates a bearing ball 8 which has a plurality of slots 10, 11 made therein along its outer surface.
  • the ball joint 7 thus formed is in this case received in a bearing shell 9 in the housing 6, so that the support strut 3 is adjustable in the axial direction as well as rotatable and pivotable in several directions Housing 6 is mounted.
  • the aforementioned slots 10, 11 in the bearing ball 8 allow centripetal bracing of the bearing ball 8 in order to fix the support strut 3 in the housing 6.
  • a plurality of tensioning mechanisms 13 are used for this, of which the device 1 in FIG. 2 has a total of three tensioning mechanisms 13, each offset from one another by 120 °. It can also be seen from the illustration in FIG. 2 that each of the clamping mechanisms 13 has a pneumatic piston 36, the function of which is explained in more detail below in connection with the description of FIG. Since the clamping mechanisms 13 in the example shown here are pneumatic devices, they require supply lines via which pneumatic pressure is supplied. These supply lines 34 can be seen by way of example in FIG. 2 and, instead of the routing shown, can also be routed within the support strut 3 if it has an inner cavity 23, that is to say is designed to be hollow.
  • FIG. 3 shows a bearing ball 8 as a separate individual part and in a three-dimensional representation.
  • the bearing ball 8 shown here has a jacket surface 38 which essentially determines the spherical shape of the bearing ball 8 and whose geometric equator 12 divides the jacket surface 38 in the middle.
  • the bearing ball 8 is also made hollow so that it has a circular cylindrical interior 37.
  • the interior 37 of the bearing ball 8 is used to accommodate the support strut 3 in the manner already described above. Due to the circular-cylindrical interior 37 and the spherical outer surface 38, the bearing ball 8 has an outer ring surface 44 as an upper and lower boundary, of which only the upper outer ring surface 44 facing the workpiece carrier 5 is shown in FIG.
  • the peculiarity of the bearing shell 8 of a device 1 according to the invention is that a plurality of slots 10 and 11 running opposite one another are introduced into the lateral surface 38 of the bearing shell 8, which completely penetrate the lateral surface 38 in the radial direction.
  • the slots 10 start from the upper circumferential ring surface 44 and extend beyond the equator 12.
  • the slots 11 run from the lower circumferential ring surface 44, not shown in detail in FIG starting also beyond the equator 12 of the bearing ball 8.
  • This special shape of the slots 10, 11 achieves an elasticity of the bearing ball 8, which enables a centripetal movement of the segments of the bearing ball 8 formed by the slots 10, 11 by the clamping force applied by the clamping mechanisms 13. In this way, the support strut 3 guided in the bearing ball 8 can be fixed in any desired position.
  • FIG. 4 a device 1 for releasably fixing a workpiece 2 to be machined with a contour segment 14 and the workpiece 2 mounted thereon is shown in a partially sectioned view.
  • the contour segment 14 is a component fixed on the workpiece carrier 5, whose contact surface 17 facing the workpiece 2 is precisely adapted to the contour of the workpiece 2 to be fixed and thus with its contact surface 17, which is complementary to the workpiece surface 4, on the corresponding workpiece surface 4 is applied.
  • a vacuum generating device generates a vacuum which sucks in the workpiece 2 via the suction line 15 of the contour segment 14 so that the workpiece 2 is releasably fixed to the contour segment 14 by the suction pressure thus given.
  • the contour segment 14 also has a contour seal 18 running around the suction line 15, which is inserted into a matching, groove-shaped recess 20 of the contour segment 14 and thus creates a suction surface 19 around the suction line 15, as can be seen better in FIG.
  • the workpiece carrier 5 also has a suction line 21, so that the vacuum required for fixing the workpiece 2 can be generated via the existing suction line connection 22 on the workpiece carrier 5 and can be guided to the suction surface 19.
  • the support strut 3 of the device 1, which accommodates the tool carrier 5 and the contour segment 14, is equipped on its side facing away from the workpiece 2 with the already described bearing ball 8, which is completely penetrated by the support strut 3.
  • the bearing ball 8 is mounted directly in a bearing surface of the housing 6 of the device 1, so that the ball joint 7 is thereby formed.
  • the single ones Movement possibilities of the support strut 3 are symbolized in FIG. 4 by the double arrows A, B and C, the double arrow “A” symbolizing the rotational movement, the double arrow “B” a pivoting movement and the double arrow “C” the axial movement possibility of the support strut 3.
  • the support plate 24 of a frame 25 which will be explained in more detail later, which receives the device 1, has a recess 26, the opening area of which is indicated by the angle a.
  • the clamping mechanism 13 comes into force, so that the bearing ball 8 is clamped in the centripetal direction due to its elasticity and thus fixes the support strut 3 in the predetermined position.
  • the clamping mechanism 13 has a pneumatic piston 36 which, in combination with a clamping element 39, can be moved in the direction of the arrow D and thus acts against the surface of the bearing ball 8 so that the desired clamping effect is achieved. Since a total of three tensioning mechanisms 13, each offset by 120 ° to one another, are present on the device 1, the bearing ball 8 is tensioned very evenly, so that a very even and reliable fixation of the support strut 3 is possible.
  • FIG. 5 shows a plurality of devices 1 in different positions, as they may be necessary for fixing a workpiece 2, not shown in FIG. All of the devices 1 shown are mounted in a common support plate 24 of a frame 25.
  • the illustration in FIG. 5 is only intended to illustrate that the support struts 3 of the individual devices 1 can be moved both in the axial direction C and in any pivoting and rotation directions A, B, since they can be moved via the ball joint 7 within the bearing ball 8 are included.
  • This special workpiece 2 has an inner surface of the workpiece 40, to which several frames 41 running parallel to one another are attached.
  • the workpiece surface 4 opposite the workpiece inner surface 40 has already been mentioned in connection with the illustration in FIG.
  • This workpiece surface 4 is fixed by the workpiece carrier 5 or the contour segment 14 fixed on the workpiece carrier 5.
  • a single frame 27 is shown, which forms part of a frame 25 preferably consisting of several single frames 27, 28, each single frame serving to accommodate at least one device 1.
  • the individual frame 27 has a plurality of geometrically identical recesses 26 which are incorporated into a support plate 24 which forms the upper end of the individual frame 27.
  • a base plate 31 of the individual frame 27 is located opposite the support plate 24, so that the struts 29 present between the support plate 24 and the base plate 31 form a stable framework structure that is interrupted by numerous openings 30.
  • the individual frame 27 has various connection elements 42, via which it can be coupled to further individual frames 27, 28 and thus assembled to form a frame 25.
  • each individual frame consists of a lightweight material such as aluminum, so that it can be transported as easily as possible.
  • FIG. 8 A frame 25 emerges from FIG. 8 which, in the example shown, is assembled in a modular manner from two identically constructed single frames 27, 28.
  • the upper support plate 24 of the frame 25 there are numerous recesses 26 which each serve to accommodate a device 1.
  • the pivoting movement of the support struts 3 within the frame 25 is made possible by the recesses 26.
  • each device 1 has a housing 6 in which the clamping mechanisms 13 and the ball joints 7 are received in a manner protected from contamination.
  • the support struts 3 of the devices 1 accommodated in the frame 25 have different positions so that they can accommodate the workpiece 2 described in connection with FIG. 6 and the contour segments 14 connected to the devices 1 can optimally adapt to the workpiece inner surface 4.
  • the contour segments 14 of the individual devices 1 have different geometries. What all contour segments 14 have in common, however, is that they each have a suction line 15 on the side facing the workpiece surface 4 of the workpiece 2, which opens into a suction opening 16 which is connected to the vacuum generating device and forms a vacuum in the area of the suction surface 19 formed thereby.
  • devices 1 are not inserted into all of the existing recesses 26. This is related to the fact that the frame 25 can be used flexibly for different workpieces 2.
  • the devices 1 present here form a matrix which corresponds to the area of the workpiece 2 to be fixed and processed. On the basis of the illustration in FIG.
  • the workpiece 2 can be placed appropriately on the contour segments 14 in their special arrangement and geometry adapted to the curved workpiece surface 4 of the workpiece 2 and then fixed with a vacuum by means of the vacuum generating device. In this way, the workpiece 2 can be on the opposite of the curved workpiece surface 4
  • FIG. 9 shows the two interconnected individual frames 27, 28, which in the present case form the frame 25 and have already been explained in connection with the description of FIG. 8, but with a workpiece 2 fixed by the devices 1, as is the case in connection with the description of Figure 6 has already been explained. It can be seen from this that the workpiece rests with its curved workpiece surface 4 on the contour segments 14 which are shaped complementarily thereto and is sucked in by the vacuum generating device. Thus, the workpiece 2 is releasably fixed on the existing devices 1 and can be on his Workpiece inner surface 40 or processed in its edge areas.
  • FIG. 10 shows a frame 25 composed of several differently designed individual frames 27 and 28 for receiving a workpiece 2.
  • the individual frames 27 correspond to the individual frames already described above.
  • the individual frames 28 here have a trapezoidal cross-section, so that the assembled frame 25 has a surface with flat and inclined sections.
  • a curved workpiece 2 can be optimally stored here.

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Abstract

L'invention concerne un dispositif (1) permettant de fixer de manière détachable une pièce (2) à usiner, ledit dispositif (1) présentant une entretoise de soutien (3) dont l'extrémité tournée vers la pièce (2) est munie d'un porte-pièces (5) reposant indirectement ou directement sur la surface de la pièce (4). Selon l'invention, la solution consiste à ce que l'extrémité de l'entretoise de soutien (3) située à l'opposé de la pièce (2) est montée dans le boîtier du dispositif (1) de manière pivotante, rotative et modulable dans sa longueur axiale. L'invention concerne en outre un bâti destiné à recevoir au moins un dispositif de ce type ainsi qu'un procédé pour assurer le support d'une pièce (2) à usiner sur un bâti (25) équipé d'au moins un dispositif (1).
PCT/DE2019/100609 2019-07-01 2019-07-01 Dispositif de fixation détachable d'une pièce à usiner, bâti pour recevoir au moins un dispositif de ce type et procédé pour assurer el support de la pièce à usiner WO2021000976A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112019007361.3T DE112019007361A5 (de) 2019-07-01 2019-07-01 Vorrichtung zur lösbaren Fixierung eines zu bearbeitenden Werkstückes, Rahmen zur Aufnahme mindestens einer derartigen Vorrichtung und Verfahren zur Lagerung des zu bearbeitenden Werkstückes
PCT/DE2019/100609 WO2021000976A1 (fr) 2019-07-01 2019-07-01 Dispositif de fixation détachable d'une pièce à usiner, bâti pour recevoir au moins un dispositif de ce type et procédé pour assurer el support de la pièce à usiner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2019/100609 WO2021000976A1 (fr) 2019-07-01 2019-07-01 Dispositif de fixation détachable d'une pièce à usiner, bâti pour recevoir au moins un dispositif de ce type et procédé pour assurer el support de la pièce à usiner

Publications (1)

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WO2021000976A1 true WO2021000976A1 (fr) 2021-01-07

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PCT/DE2019/100609 WO2021000976A1 (fr) 2019-07-01 2019-07-01 Dispositif de fixation détachable d'une pièce à usiner, bâti pour recevoir au moins un dispositif de ce type et procédé pour assurer el support de la pièce à usiner

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DE (1) DE112019007361A5 (fr)
WO (1) WO2021000976A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100005249A1 (it) * 2021-03-05 2022-09-05 Cms Spa Sistema di bloccaggio pezzo per centri di lavoro
FR3123408A1 (fr) * 2021-05-27 2022-12-02 Psa Automobiles Sa Dispositif support de pièce étendue de forme complexe

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GB120697A (en) 1917-10-10 1918-11-11 Pilkington Brothers Ltd Improvements in or relating to Apparatus for Grinding and/or Polishing Plate Glass.
DE1903576A1 (de) 1969-01-24 1970-08-27 Ver Flugtechnische Werke Verfahren zur konstruktiven Entwicklung eines Fixierund Spannsystems fuer mechanisch zu bearbeitende Werkstuecke,z.B.auf einer Werkzeugmaschine,und Vorrichtung zur Ausfuehrung
WO1980001366A1 (fr) * 1979-01-08 1980-07-10 P Harmand Support inclinable pour objet ou piece a usiner
EP0069230A2 (fr) 1981-07-07 1983-01-12 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Méthode de serrage de pièces et dispositif de réalisation
DE20306263U1 (de) * 2003-04-17 2003-08-07 Hackenfort Guenter Werkstückhalter
US20070020065A1 (en) * 2005-07-25 2007-01-25 Kirby Larry D Workpiece holding apparatus
US20090057971A1 (en) * 2007-09-05 2009-03-05 Karl Bumgarner Universal holding fixture
DE10230270B4 (de) 2001-07-06 2009-05-07 M. Torres Diseños Industriales, S.A., Torres de Elorz Flexibles System zur Herstellung von Konstruktionen
US20090140482A1 (en) * 2007-11-30 2009-06-04 Flow International Corporation Flexible header system for machining workpieces
DE202012101508U1 (de) * 2012-04-23 2012-06-20 Matrix Gmbh Spannsysteme Und Produktionsautomatisierung Abstützvorrichtung
DE102016217003A1 (de) * 2016-09-07 2018-03-08 Weeke Bohrsysteme Gmbh Variabler Maschinentisch
WO2018045463A1 (fr) * 2016-09-08 2018-03-15 Fives Line Machines Inc. Station d'usinage, système de retenue de pièce et procédé d'usinage d'une pièce

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB120697A (en) 1917-10-10 1918-11-11 Pilkington Brothers Ltd Improvements in or relating to Apparatus for Grinding and/or Polishing Plate Glass.
DE1903576A1 (de) 1969-01-24 1970-08-27 Ver Flugtechnische Werke Verfahren zur konstruktiven Entwicklung eines Fixierund Spannsystems fuer mechanisch zu bearbeitende Werkstuecke,z.B.auf einer Werkzeugmaschine,und Vorrichtung zur Ausfuehrung
US3681834A (en) 1969-01-24 1972-08-08 Ver Flugtechnische Werke Method and apparatus for fabricating workholders
WO1980001366A1 (fr) * 1979-01-08 1980-07-10 P Harmand Support inclinable pour objet ou piece a usiner
EP0069230A2 (fr) 1981-07-07 1983-01-12 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Méthode de serrage de pièces et dispositif de réalisation
DE10230270B4 (de) 2001-07-06 2009-05-07 M. Torres Diseños Industriales, S.A., Torres de Elorz Flexibles System zur Herstellung von Konstruktionen
DE20306263U1 (de) * 2003-04-17 2003-08-07 Hackenfort Guenter Werkstückhalter
US20070020065A1 (en) * 2005-07-25 2007-01-25 Kirby Larry D Workpiece holding apparatus
US20090057971A1 (en) * 2007-09-05 2009-03-05 Karl Bumgarner Universal holding fixture
US20090140482A1 (en) * 2007-11-30 2009-06-04 Flow International Corporation Flexible header system for machining workpieces
DE202012101508U1 (de) * 2012-04-23 2012-06-20 Matrix Gmbh Spannsysteme Und Produktionsautomatisierung Abstützvorrichtung
DE102016217003A1 (de) * 2016-09-07 2018-03-08 Weeke Bohrsysteme Gmbh Variabler Maschinentisch
WO2018045463A1 (fr) * 2016-09-08 2018-03-15 Fives Line Machines Inc. Station d'usinage, système de retenue de pièce et procédé d'usinage d'une pièce

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100005249A1 (it) * 2021-03-05 2022-09-05 Cms Spa Sistema di bloccaggio pezzo per centri di lavoro
EP4052840A1 (fr) * 2021-03-05 2022-09-07 C.M.S. S.p.A. Système de verrouillage de pièce pour centres d'usinage
FR3123408A1 (fr) * 2021-05-27 2022-12-02 Psa Automobiles Sa Dispositif support de pièce étendue de forme complexe

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