• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method and an apparatus for the automated production of a semi-finished product of a stator (1) of an electrical machine. In this case, a substantially hollow cylindrical laminated core (2) with a plurality of stacked, a major axis (6) defining laminations () is provided. Bar-shaped conductor elements (3, 4) for establishing an electrical winding project with at least one of their longitudinal ends (11, 12, 13, 14) opposite the first and / or second front end (7, 8) of the laminated core (2) so that they abut at least one of the front ends (7, 8) of the laminated core (2) form line projections (15, 16, 17, 18) relative to the laminated core (2). These conductor projections (15, 16, 17, 18) of the conductor elements (3, 4) are bent by means of at least one around one of the circumferential direction of the hollow cylindrical laminated core (2). In addition, the longitudinal ends (11, 12, 13, 14) of the conductor elements (3, 4) by radially in the direction of the axis of rotation (27) acting calibration forces of at least one calibrating device (28, 29) controlled with adjustable, radially to the axis of rotation ( 27) of the at least one bending tool () aligned Kalibrierfingern (30, 31) are exerted, spent in a predefined radial target position relative to the laminated core (2).
    公开号:AT520311A4
    申请号:T50739/2017
    申请日:2017-09-01
    公开日:2019-03-15
    发明作者:Falkner Andreas；Primorac Mladen-Mateo；Ing David Scherrer Dipl
    申请人:Miba Ag；
    IPC主号:
    专利说明:

    The invention relates to a method and a device for the automated production of a semi-finished product of a stator of an electric machine, as specified in claims 1 and 8.
    From JP2003259613A a manufacturing method for the electrical winding of the stator of an electrical machine is known. In this case, a plurality of substantially U-shaped curved conductor elements is inserted into the receiving grooves of the hollow cylindrical stator laminated core. The projecting on one of the two end faces of the stator laminated core supernatants of the leg ends of the U-shaped bent conductor elements are then bent by means of concentrically arranged disk-shaped bending tools along the circumferential direction of the stator laminated core, wherein in the radial direction of the stator laminated core directly adjacent projections of the conductor elements are bent in opposite circumferential directions, so that crossing overhangs occur. By selectively electrically connecting the projections of the conductor elements, at least one winding extending in the circumferential direction of the stator laminated core is produced. This manufacturing process can be implemented only to a limited extent automated or only with relatively high technical complexity and only in compliance with close tolerances of the U-shaped curved conductor elements automated.
    US 2,270,472 A discloses a method and a machine for manufacturing the rotor of an electric machine. The winding of the rotor is designed as a bar winding with crossed line ends for connection to the commutator of the rotor. Also, this method is only partially satisfactory in terms of achievable production cycle times.
    The object of the present invention was to overcome the disadvantages of the prior art and to provide a method and a device with which a functionally stable, precise and rapid production of stators for electrical machines is possible.
    This object is achieved by a method and a device according to the claims.
    By means of the method according to the invention, an automated or at least partially automated production of a stator of an electrical machine is made possible, or at least one corresponding semi-finished product or intermediate product can thereby be produced. According to one of the method steps of the production method, a substantially hollow-cylindrical laminated core is provided with a plurality of stacked laminations defining a major axis. The laminated core has a plurality of distributed in its circumferential direction, extending between a first and second axial end face of the laminated core receiving grooves for line sections of an electrical winding.
    The conductor elements protrude with at least one of their longitudinal ends opposite the first and / or second front end of the laminated core and thus form at at least one of the front ends of the laminated core line projections with respect to the laminated core.
    In a further method step, the conductor projections of the conductor elements are bent in the direction of the circumferential direction of the hollow cylindrical laminated core by means of at least one bending tool rotatably mounted about an axis of rotation.
    Furthermore, the longitudinal ends of the conductor elements by radially acting in the direction of the rotation axis calibration forces, which are exercised by at least one calibrated controllable adjustable, radially aligned to the axis of rotation of the at least one bending tool calibration fingers, spent in a predefined radial target position relative to the laminated core.
    It is advantageous in the method steps selected here that the bending and calibration process for the longitudinal or conductor ends of the rod-shaped conductor elements is combined or implemented in a structurally combined bending and calibration device. For while the rotatably mounted bending tools are responsible for the plastic bending or deformation of the conductor ends along the circumferential direction of the laminated core, the translationally adjustable Kalibierfinger the at least one calibration device for the shipment of the conductor ends or longitudinal ends of the conductor elements in their radial target position or possible provided near the radial target position relative to the laminated core.
    Also advantageous are the measures according to claim 2, as a process-reliable and at the same time particularly precise positioning of the longitudinal ends of the conductor elements at the respective desired positions relative to the laminated core can be achieved. In particular, thereby the longitudinal ends of the conductor elements by means of the bending tools at the respective circumferential target positions are still supported, while the calibration device or its calibration fingers press or urge the longitudinal ends of the conductor elements in the respective radial target position.
    Also advantageous are the measures according to claim 3, as this sufficiently high calibration forces can be built or exercised in order to build the respective desired positions of the longitudinal ends of the conductor elements even with relatively short line projections. By arranged in the inner circle of the conductor elements or can be arranged mandrel, which may be particularly disc-shaped, a precise, stable and structurally simple abutment or a defined limit stop for the crowded in the direction of the main axis of the laminated core longitudinal ends of the conductor elements can be achieved.
    The measures according to claim 4, a simple introduction or insertion of the mandrel in the ring assembly or in the innermost layer of conductor elements is made possible. In addition, the conductor elements can be urged in the course of the calibration sufficiently far toward the main axis of the laminated core, so that they due to elastic spring back
    Elimination of the calibration forces at the planned radial target position or closer to the planned radial target position.
    Also expedient are the measures according to claim 5, because in the course of the introduction of the mandrel an at least slight expansion or spreading of the line projections can be made relative to the laminated core. In particular, thereby, the longitudinal ends of the innermost layer (s) can be approximated toward the longitudinal ends of the outermost layer (s). In particular, a calibration force can thereby be exerted on the longitudinal ends of the conductor elements in a simple manner, which acts radially outward with respect to the main axis of the laminated core.
    In the measures according to claim 6 is advantageous that the forces acting on the laminated core forces or torques in the course of the bending process of the line projections can be kept relatively low. In particular, the forces acting on a holding device for the laminated core forces can be kept as low as possible in a simple and effective manner. As a result, thereby also the holding or clamping forces which must act on the laminated core or on the laminations, are kept relatively low.
    An advantage of the measures according to claim 7 is that the forces acting on the bending device can be absorbed with structurally relatively simple means, in particular in soil sections can be derived. Especially in comparison to vertically oriented rotary or main axes thereby relatively simpler and slimmer machine body can be constructed. Another advantage of the specified measures is that the weight of the laminated core acts at least approximately evenly distributed on both bending and calibration devices.
    Regardless of the specified method measures, the object of the invention is also achieved by a device for the automated production of a semifinished product of a stator of an electric machine.
    This device has a support frame for supporting at least one rotatable about an axis of rotation rotatably mounted bending tool, wherein the at least one bending tool is executed in a hollow cylindrical or cup-shaped and has on a front side of its hollow cylindrical portion a plurality of distributed in the circumferential direction arranged radially extending to the axis of rotation Mitnehmerstege. Free spaces are respectively formed between the carrier webs which follow one another in the circumferential direction, which free spaces are provided for receiving partial sections or longitudinal ends of conductor elements to be bent with the bending tool.
    In addition, at least one movement drive for the at least one rotatably mounted bending tool is implemented, wherein at least one electronic control device is designed for the controlled activation of the at least one movement drive.
    It is essential that the at least one bending tool is surrounded on the outer circumference of at least one calibration device. This at least one calibration device comprises a plurality of calibration fingers aligned radially with respect to the axis of rotation of the at least one bending tool. These calibration fingers are adjustable by means of at least one adjusting device in the direction of the axis of rotation and in the direction away from the axis of rotation.
    The thus achievable technical effects and advantageous effects are the preceding and the following parts of description can be removed.
    Also useful are the measures according to claim 9, since thereby the at least one calibration device can be arranged around the at least one bending tool. As a result, the calibration process can be carried out without the laminated core having to be removed from the bending device or having to be transferred to another location. This can increase the precision and also the throughput speed of the production line.
    In the measures according to claim 10 it is advantageous that a reliable and at the same time as precise as possible radial calibration of the conductor ends with respect to the laminated core can be achieved. In addition, the shortest possible cycle times can be achieved due to the simultaneously executable calibration movements with respect to all present in the laminated core conductor elements. In addition, an alternating bending and calibration process can be carried out without appreciable delays or pauses.
    An advantage of the measures according to claim 11 lies in the fact that it implements the most cost-effective yet sufficiently powerful adjusting drive for the calibrating device. The control requirements can be kept relatively low by the specified measures.
    Also advantageous are the features according to claim 12, as a structural module or a common structural unit is thereby created, in which the bending device and the calibration device are integrated. In particular, thereby a re-clamping or transferring the laminated core with the conductor elements between a bending device and a calibration device is not necessary, which among other things a higher precision and improved cycle times can be achieved.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    In each case, in a highly simplified, schematic representation:
    Fig. 1 is a hollow cylindrical laminated core with a plurality of received therein, rectilinear conductor elements in their not yet bent state, in perspective view;
    2a shows individual process steps for producing a stator of an electrical machine;
    FIG. 2b shows a device for bending the conductor sections projecting in relation to a laminated core and a stator semi-finished product produced with this device with bent conductor sections projecting with respect to the laminated core; FIG.
    Fig. 3 shows two opposing units of combined bending and calibrating devices for the automated production of a stator semi-finished product;
    4 shows the calibration device according to FIG. 3 in an enlarged view;
    5 shows the bending device according to FIG. 3 in an enlarged view;
    6 shows a partial region of the calibration device according to FIG. 4.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location.
    The term "in particular" is understood below to mean that it may be a possible more specific training or specification of an object or a method step, but not necessarily a compelling, preferred embodiment of the same or a compelling approach.
    In Fig. 1 shows a possible embodiment of a stator 1 for forming an electric machine, not shown.
    The assembly and a plurality of manufacturing steps of the stator 1 can preferably in a complex production plant automated in several manufacturing plants supply stations usually also be carried out fully automatically. In the following, not all of the total required process or manufacturing steps for the creation of a ready-to-use stator 1 are described, wherein the additionally required manufacturing steps can be taken from the prior art.
    Basically, the stator 1 comprises a laminated core 2 and a plurality of conductor elements 3, 4 to be accommodated therein for forming electrical coils or windings and for generating a magnetic rotating field as a result of a current application of the coils or windings.
    In the present embodiment, the individual conductor elements 3, 4 are shown in their undeformed starting position, in which they are formed as straight rods. The rods usually have a rectangular cross section up to a square cross section and a longitudinal extent and are formed from an electrically conductive material. In most cases, this is a copper material. Therefore, the conductor elements 3, 4 may also be referred to as profile bars and the electrical winding constructed therewith may be referred to as a bar winding.
    To form electrical coils or windings formed therefrom, a multiplicity of receiving grooves 5 are arranged or formed in the laminated core 2, in which in each case at least one of the conductor elements 3, 4, but preferably at least two of the conductor elements 3, 4, are received or is arranged or are. The receiving grooves 5 may extend in the axial direction of the laminated core 2 in a parallel orientation with respect to a main axis 6 defined by the laminated core 2. But it would also be possible to choose a respect to the main axis 6 is not parallel arrangement of the grooves 5 with the therein male conductor elements 3, 4. In any case, the receiving grooves 5 extend in the direction of the main axis 6 in each case between the first end face 7 and the second end face 8 of the laminated core 2 spaced therefrom.
    The receiving grooves 5 each have a conductor element 3, 4 accommodated on the cross-sectional dimension of the conductor element 3, 4 or in the case of several in the same receiving groove 5, each having a receiving groove cross-section adapted to the cross-sectional dimensions. The conductor elements 3, 4 per receiving groove 5 can - as exemplified - be arranged in the radial direction to the main axis 6 in a row. But it is also a matrix or array-shaped, in particular a series and column-like arrangement of conductor elements 3, 4 in the individual grooves 5 possible.
    The laminated core 2 is composed of a plurality of electrically mutually insulated individual sheets or laminations 2 'to the package. The laminated core 2 is bounded in the direction of its main axis 6 by the first end face at its first end face 7 and by the second end face spaced therefrom at its second end face 8. Preferably, the two end faces or front ends 7, 8 are arranged parallel to each other and extending in a direction aligned in the normal direction with respect to the main axis 6 level. In the present exemplary embodiment of a stator 1 of an electrical machine, the laminated core 2 forms a hollow cylinder with a substantially cylindrical inner surface and a cylindrical outer surface made of the stacked individual sheets or laminations 2 '.
    As already stated above, at least one of the conductor elements 3, 4 is arranged in each of the receiving grooves 5. However, it is also possible to provide several, in particular two, three, four, five, six or even more conductor elements 3, 4 per receiving groove 5. In particular, eight, ten, twelve or more conductor elements 3, 4 may be accommodated in each of the receiving grooves 5. As a minimal variant, only one conductor element 3 may be provided, but in this embodiment, in each case a receiving groove 5, two conductor elements 3, 4 are shown and described. Thus, the conductor elements 3 arranged in the radial direction on the inside form a first layer 9 and the conductor elements 4 arranged on the outside in the radial direction form a second layer 10. Individual or a few of the receiving grooves 5 can also remain empty or be implemented without inserted therein conductor elements 3, 4.
    The rod-shaped, in the initial state, preferably rectilinearly extending conductor elements 3 and 4 each have a first longitudinal end 11,12 and in each case one opposite thereto second longitudinal end 13, 14. In this embodiment, the first longitudinal ends 11,12 protrude beyond the first end face 7 and the second longitudinal ends 13, 14 protrude beyond the second end face 8 of the laminated core 2. The conductor elements 3, 4 thus form opposite the first end face 7 first line projections 15, 16 and opposite the second end face 8 second line projections 17, 18 from.
    The received in the laminated core 2 in the individual grooves 5 and in the initial state still undeformed conductor elements 3, 4 are in the region of each of the two ends 7, 8 of the laminated core 2 at the longitudinal ends 11, 12; 13, 14 or with respect to their line projections 15, 16; 17, 18 in a subsequent manufacturing step entangled against each other or bent along the circumferential direction of the laminated core 2. Subsequently, longitudinal ends 11 of the first or inner layer 9 are selectively electrically connected to corresponding longitudinal ends 12 of the second or outer layer 10. The same can preferably also be carried out with the respective second longitudinal ends 13, 14 in the region of the second front end 8 of the laminated core 2.
    In a known manner, the conductor elements 3, 4 may be provided with an electrical insulation layer 19, except for mutual contact areas formed thereon. This insulating layer 19 on the lateral surface of the rod-shaped conductor elements 3, 4 is preferably formed from plastic and may have been applied in a previous painting or dipping process. Furthermore, it may be advantageous if the individual conductor elements 3, 4 in addition to their electrical insulation layer 19 within the receiving grooves 5 are also surrounded by a structurally independent, hollow-profile-like insulation element 20 preferably fully circumferentially.
    The loading or the introduction of the individual conductor elements 3, 4 in the respective grooves 5 can be done stepwise or intermittently, with the laminated core 2 in this case preferably with its main axis 6 in a horizontal
    Alignment is located. Since the typically still undeformed, originally linear or rod-shaped conductor elements 3, 4 are received longitudinally displaceable in the respective grooves 5, when transferring to a subsequent processing station or manufacturing station on the relative position of the conductor elements 3, 4 with respect to the laminated core 2 wisely or to ensure a predefined relative position of the conductor elements 3, 4 with respect to the laminated core 2.
    In a preferably before the transfer or forwarding to the subsequent processing or manufacturing station to be performed positioning step, the conductor elements 3, 4 in the axial direction with respect to one of the front ends 7, 8 of the laminated core 2 are still aligned. This can e.g. take place in that the laminated core 2, together with the conductor elements 3, 4 already accommodated therein, is transferred from its preferably horizontal charging position into a vertical positioning position, in which the main axis 6 of the laminated core 2 has a vertical longitudinal orientation. The laminated core 2 can be supported on a positioning approach, wherein the conductor elements 3, 4 are preferably due to gravity in the individual grooves 5 to a preferably circumferentially formed positioning with one of its longitudinal ends 11, 12 or 13, 14 come to rest. The distance between the positioning projection and the positioning element is to be selected according to the required or predetermined projection of the ends of the conductor elements 3, 4 via one of the front ends 7, 8 of the laminated core 2. This transport position can e.g. be taken on a movable between each of the workstations workpiece carrier.
    With the method steps given below, as also schematically illustrated in FIGS. 2a and 2b, an automated or at least partially automated production of at least one semi-finished product of the generic stator 1 for electrical machines can be achieved. The corresponding method steps thus result in a semi-finished or intermediate product of a stator 1, which semifinished product is to be supplemented or completed by further process measures.
    In an initial step, a substantially hollow-cylindrical laminated core 2 with a plurality of laminations 2 'stacked on top of one another and defining a main axis 6 is provided. This laminated core 2 has a plurality of distributed in the circumferential direction, between the first axial end face 7 and the second axial end face 8 of the laminated core 2 extending receiving grooves 5 for line sections of an electrical winding to be produced. In the illustrated embodiment with a stationary running stator 1 of an electric machine or an electric drive motor, the laminated core 2 is designed as a hollow cylindrical body. However, it is also possible for a stator to have a substantially cylindrical body shape, the corresponding electric machine or the corresponding drive motor then being designed as a so-called external rotor motor with a hollow-cylindrical rotor.
    In addition, a plurality of rod-shaped conductor elements 3, 4 are provided, which in the initial or original state, in particular in their insertion state relative to the laminated core 2, have a rectilinear or predominantly rectilinear shape, in particular have a rod shape. These rod-shaped conductor elements 3, 4 can be carried out in a helical or schraubkonturförmig depending on the course of the grooves 5, which is the case in particular in so-called obliquely grooved laminations 2 or stators 1 or rotors. The rod-shaped conductor elements 3, 4 each have a first longitudinal end 11, 12 and a distally opposite, second longitudinal end 13, 14. This plurality of rod-shaped conductor elements 3, 4 are provided by predefined electrical interconnections or by connections to be subsequently produced for establishing the electrical winding of the stator 1. A length 21 of the rod-shaped conductor elements 3, 4 is greater than an axial length 22 of the laminated core 2.
    In a preferably automated process step, the rod-shaped conductor elements 3, 4 in pairs or in groups, in particular in a multiple of two pieces, preferably in each of the grooves 5 are introduced. But it is also possible that individual of the grooves 5 less conductor elements 3, 4, or that individual grooves 5 have no conductor elements 3, 4. In the middle section of FIG. 2 a, a partially executed insertion process of the conductor elements 3, 4 can be seen or, for the sake of simplicity, only individual conductor elements 3, 4 to be inserted into the laminated core 2 have been represented. The introduction of the substantially rectilinear or unbent, rod-shaped conductor elements 3, 4 in the grooves takes place starting from the first or second axial end face 7, 8 of the laminated core 2. But it is also a combined insertion of individual conductor elements 3, 4, starting from the first front end 7 and individual conductor elements 3, 4, starting from the opposite, second front end 8 of the laminated core 2 possible. The insertion or insertion process is thus carried out in the axial direction to the laminated core 2, that is not just in the radial direction to the main axis 6 of the laminated core 2. In particular, the receiving grooves 5 usually have a taper of the clear cross section and the clear width in their the main axis 6 next allocated section on. This section or this end of the receiving grooves 5 is therefore relatively narrow or narrow, but nevertheless designed to be open, in particular interrupted, as is known in principle from the prior art and can be seen by way of example from FIG. 2 a.
    In a subsequent method step, the bar-shaped conductor elements 3, 4 introduced into the receiving grooves 5 are positioned such that their first and second longitudinal ends 11, 12; 13, 14 opposite the first and second front end 7, 8 of the laminated core 2 each protrude. These protruding sections of the conductor elements 3, 4 define first and second line projections 15, 16, respectively; 17, 18 opposite the first and second front end 7, 8 of the laminated core 2. Individual conductor elements 3, 4 may have a comparatively greater length 21 than other conductor elements 3, 4 within the electrical winding to be formed. The comparatively longer running conductor elements 3, 4 can be provided in particular for the formation of winding connections or connection zones. After the introduction and positioning of the conductor elements 3, 4 according to the desired electrical winding concept, a defined bending or crimping of the first and second line over stands 15, 16 and 17, 18 of the rod-shaped conductor elements 4, 5 in the circumferential direction of the laminated core 2. In particular Thus, the first and second winding heads 23, 24 - Fig. 2b - defined the electrical winding of the stator 1 and rotor in their basic geometry or shape.
    According to an expedient measure is in the course of this bending or. Forming processes against the originally straight or largely straight from the laminated core 2 outstanding line projections 15, 16 and 17, 18 provided that at least a first bending tool 25, 25 'at the first longitudinal ends 11,12 of the conductor elements 3, 4 attached or attached , In addition, in particular offset substantially at the same time or slightly offset in time, at least one second bending tool 26, 26 'is attached or attached to at least one of the second longitudinal ends 13, 14 of the conductor elements 3, 4, as is roughly illustrated in particular in FIG. The at least one first bending tool 25, 25 'and the at least one second bending tool 26, 26' can in a conventional manner form-fitting acting receiving pockets or driving elements for the longitudinal ends 11, 12; 13, 14 and front ends of the conductor elements 3, 4 have. But it is also possible that the bending tools 25, 25 ', 26, 26' are based primarily on a frictional connection principle or based on another driver principle for controlled, plastic deformation of the conductor elements 3, 4.
    In particular, the line projections 15, 16; 17, 18 of the conductor elements 3, 4 by means of the at least one about a rotation axis 27 rotatably mounted bending tool 25, 25 '; 26, 26 'are bent in the direction of the circumferential direction of the hollow cylindrical laminated core 2.
    In an effective manner, the at least one first bending tool 25, 25 'and / or the at least one second bending tool 26, 26' can also be used so that they have the respective associated longitudinal ends 11, 12; 13, 14 or line projections 15, 16; 17, 18 of the conductor elements 3, 4 move in the axial direction of the laminated core 2 in the receiving grooves 5 and position as planned or at the respective desired position relative to the front ends 7, 8 of the laminated core 2.
    It is essential that at least one calibration device 28, 29 is formed, with which the longitudinal ends 11, 12; 13, 14 of the conductor elements 3, 4 immediately after the bending process along the circumferential direction of the laminated core 2 even by radially acting in the direction of the rotation axis 27 calibration forces in a predefined radial target position relative to the laminated core 2 spent or pressed, as is best a See synopsis of Fig. 3 to 6 can be seen. The calibration forces of the calibrating device 28, 29 are thereby exerted by controlled or actively adjustable, radially to the axis of rotation 27 of the at least one bending tool 25, 25 ', 26, 26' aligned Kalibrierfingern 30, 31.
    In particular, it is expedient if the calibration forces applied via the calibration fingers 30, 31 with respect to the longitudinal ends 11, 12; 13, 14 of the conductor elements 3, 4 are exerted while the at least one bending tool 25, 25 '; 26, 26 'with the longitudinal ends 11, 12; 13, 14 of the conductor elements 3, 4 is still in contact or in positive engagement. In particular, during this calibration process, the longitudinal ends 11, 12; 13, 14 of the conductor elements 3, 4 held by the at least one bending tool 25, 25 ', 26, 26' in their desired offset angle or in the immediate vicinity of their desired offset angle relative to the laminated core 2 or guided in the radial direction to the axis of rotation 27 ,
    Typically, each receiving groove 5 is provided with two or more conductor elements 3, 4 arranged next to one another in the radial direction to the main axis 6 for forming two or more concentric layers 9, 10 of conductor elements 3, 4 in the laminated core 2. It may be expedient if the mutually opposite longitudinal ends 11,13 of the conductor elements 3 within the radially inner layer 9 by means of the associated bending tools 25 ', 26' simultaneously or at least phased simultaneously in opposite directions with respect to the circumferential direction of the laminated core 2 bent or be twisted, and / or if simultaneously or at least in phases simultaneously the opposite longitudinal ends 12, 14 of the conductor elements 4 of the immediately adjacent, radially outer layer 10 by means of the associated further bending tools 25, 26 by a defined angle of rotation with respect to the circumferential direction of the Sheet metal packages 2 are bent or twisted in opposite directions.
    According to an advantageous measure can also be provided that the main axis 6 of the laminated core 2 is spent in a horizontal orientation or that a horizontal orientation of the main axis 6 of the laminated core 2 is maintained before the bending process respectively during the bending operation of the first and second longitudinal ends of the 11th , 12; 13, 14 and the first and second pipe projections 15, 16; 17, 18 of the conductor elements 3, 4 is executed.
    As best seen in FIG. 6 or from a combination of FIGS. 4, 5 can be seen, the at least one bending tool 25, 25 ', 26, 26' at the outer periphery of a respective associated calibration device 28, 29 surrounded. As further best seen in FIG. 4, the calibration device 28, 29 comprises a plurality of calibration fingers 30, 31 aligned radially with respect to the axis of rotation 27 of the at least one bending tool 25, 25 ', 26, 26'. These calibration fingers 30, 31 are by means of at least one adjusting device 32, 33 in the radial direction to the axis of rotation 27 and in the radial direction away from the axis of rotation 27 adjustable.
    The at least one adjusting device 32, 33 for the calibration fingers 30, 31 can be formed by at least one linear drive 34, 35, in particular by a plurality of working cylinders. The adjusting device 32, 33 acts on a plurality of slide guides 36, 37 such that the calibration fingers 30, 31 are movable in the radial direction to the axis of rotation 27 and in the radial direction away from the axis of rotation 27.
    The calibration device 28, 29 has at least one support body 38, 39 with a centrally arranged, circular release 40, which release 40 has a diameter 41 which is dimensioned larger than an outer diameter 42 of the at least one accommodated or receivable bending tool 25, 25 ', 26, 26'.
    The at least one bending tool 25, 25 ', 26, 26' is preferably-as best seen in FIG. 5 -has a hollow-cylindrical or cup-shaped design. At one of the rotary bearing or drive shaft projecting end face 43 of its hollow cylindrical portion 44 a plurality of distributed in its circumferential direction, arranged radially to the axis of rotation 27 extending Mitnehmerstege 45 are formed. Free spaces 46 or catch gaps are formed between the carrier webs 45 that follow each other in the circumferential direction. These free spaces 46 or Mitnehmerlücken - which are executed in the manner of tooth gaps of a gear - are for preferably positive reception of sections or longitudinal ends 11, 12; 13, 14 of the bending tool 25, 25 '; 26, 26 'to be bent conductor elements 3, 4 are provided.
    The driver webs 45 may be carried out in the manner of radially extending tooth flanks, as best seen in FIGS. 5, 6 can be seen. The intervening free spaces 46 are not limited in the radial direction to the axis of rotation 27, but executed open or continuous. In particular, the free spaces 46 do not have a three-sided limited pocket shape. Rather, the free spaces 46 extending in the radial direction receiving slots for associated longitudinal ends 11, 12; 13, 14 of conductor elements 3, 4 is.
    An available adjusting path of the calibration fingers 30, 31 is dimensioned such that calibration tips 47 on the calibration fingers 30, 31 can penetrate during a calibration process at least into the free spaces 46 between the driver webs 45 of the radially outer bending tools 25, 26, as shown in FIG is apparent. In the course of a bending process of the conductor ends 11, 12; 13, 14 by means of the at least one bending tool 25, 25 ', 26, 26', the calibration tips 47 can be positioned outside of the free spaces 46. It may also be expedient if in each case at least two, preferably three or four, calibration fingers 47 are grouped and each group of calibration fingers 47 is mounted so as to be actively adjustable via a common guide or slide element 48 in the radial direction to the axis of rotation 27.
    As best seen in FIGS. 2b and 3, at least one movement drive 49, 50 is provided for the at least one rotatably mounted bending tool 25, 25 ', 26, 26'. At least one electronic control device 51 -Fig. 2b - at least serves for the controlled activation of the at least one first movement drive 49, 50. This at least one control device 51 can also be used for position, force and / or time-controlled activation and deactivation of the other drives or actuators of the production facility.
    The bending tools 25, 25 ', 26, 26' rotatably mounted about the axis of rotation 27 are held or mounted on at least one support frame 52, 53. In addition, the calibration devices 28, 29 on this support frame 52, 53 for the bending tools 25, 25 ', 26, 26' supported. In particular, the calibration device 28, 29 illustrated in FIG. 4 is fastened or rigidly mounted on the support frame 52, 53 shown in FIG. 5, in which case the calibration fingers 30, 31 are radial to the axis of rotation 27 of the at least one bending tool 25, 25 ', 26 '26' are lost. Accordingly, the at least one bending tool 25, 25 ', 26, 26' is surrounded or enclosed on its outside by the at least one calibrating device 28, 29. In particular, the calibration device 28 of the first bending device can be assigned to the bending tools 25, 25 'or form a structural unit, while the further calibration device 29 of the bending device is associated with the further bending tools 26, 26' and hereby also forms a structural unit, such as the Fig. 2b and 3 can be removed.
    To ensure a reliable or precise calibration process with respect to the longitudinal ends 11, 12; 13, 14 of the conductor elements 3, 4 can be provided that the conductor elements 3, 4 are pressed starting from the radially adjustable in the direction of the rotation axis 27 Kalibrierfingern 30, 31 in the direction of the axis of rotation 27 while the radially innermost conductor elements 3 via the radially outer conductor elements 4 against a lateral surface 54 of a support mandrel 55 - Fig. 6 - are pressed. This mandrel 55 may have a smaller diameter 56 than an inner diameter 57 of the innermost layer 9 of conductor elements 3 - Fig. 1 - is taking their desired radial position.
    Alternatively, it is also possible that the support pin 55, which is introduced in the course of a calibration process in the ring assembly or in the inner layer 9 of conductor elements 3, 4 or is to be introduced therein, has a larger diameter 56 than an inner diameter 57 of innermost layer 9 of conductor elements 3 when taking their desired radial position. In particular, the support mandrel 55 may also be formed frusto-conical and within at least one axial cross-sectional plane of its truncated cone form this larger diameter 56, so that the conductor elements 3, 4 during insertion or insertion of the support mandrel 55 in the ring assembly of conductor elements 3, 4 or in the inner layer 9 of conductor elements 3, at least slightly pressed in the radial direction to the main axis 6 to the outside.
    The embodiments show possible embodiments, it being noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but rather various combinations of the individual embodiments are possible with each other and this variation possibility due to the teaching of technical action by representational invention in Can the expert working in this technical field.
    The scope of protection is determined by the claims. However, the description and drawings are to be considered to interpret the claims. Individual features or combinations of features from the illustrated and described different embodiments may represent for themselves inventive solutions. The task underlying the independent inventive solutions can be taken from the description. All statements of value ranges in the present description should be understood to include any and all sub-ranges thereof, e.g. is the statement 1 to 10 to be understood that all sub-areas, starting from the lower limit 1 and the upper limit 10 are included, ie. all sub-areas begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.
    For the sake of order, it should finally be pointed out that for a better understanding of the construction, elements have been shown partially unevenly and / or enlarged and / or reduced in size.
    List of Reference Numerals 1 stator 30 calibration finger 2 laminated core 31 calibration finger 2 'laminations 32 adjusting device 3 conductor element 33 adjusting device 4 conductor element 34 linear drive 5 receiving groove 35 linear drive 6 main axis 36 sliding guide 7 first front end 37 sliding guide 8 second front end 38 supporting body 9 first layer 39 supporting body 10 second layer 40th Exemption 11 first longitudinal end 41 diameter 12 first longitudinal end 42 outer diameter 13 second longitudinal end 43 end face 14 second longitudinal end 44 hollow cylindrical section 15 first line projection 45 driver webs 16 first line projection 46 free spaces 17 second line projection 47 calibration tips 18 second line projection 48 slide element 19 insulation layer 49 motion drive 20 isolation element 50 motion drive 21 length 51 control device 22 axial length 52 support frame 23 first winding head 53 supporting frame 24 second winding head 54 lateral surface 25,25 'first bending tool 55 mandrel 26, 26 'second bending tool 56 diameter 27 rotation axis 57 inner diameter 28 calibration device 29 calibration device
    权利要求:
    Claims (12)
    [1]
    A method for the automated production of a semifinished product of a stator (1) of an electrical machine, the method comprising the following method steps, - providing a substantially hollow cylindrical laminated core (2) with a plurality of stacked, a major axis (6) defining laminations (2 '), which laminated core (2) has a plurality of distributed in its circumferential direction, between a first and second axial end face (7, 8) of the laminated core (2) extending receiving grooves (5) for conductor elements (3, 4) of an electrical winding wherein the conductor elements (3, 4) project with at least one of their longitudinal ends (11, 12; 13, 14) opposite the first and / or second front end (7, 8) of the laminated core (2) and so on at least one of the front ends (7, 8) of the laminated core (2) forming overhangs (15, 16, 17, 18) with respect to the laminated core (2), - bending the conductor projections (15, 16, 17, 18) of the conductors duck (3, 4) by means of at least one about a rotational axis (27) rotatably mounted bending tool (25, 25 '; 26, 26 ') in the direction of the circumferential direction of the hollow cylindrical laminated core (2), wherein the method is further characterized in that the longitudinal ends (11, 12, 13, 14) of the conductor elements (3, 4) by radially in the direction of the axis of rotation ( 27) acting calibration forces, which by at least one calibrating device (28, 29) with controlled adjustable, radially to the axis of rotation (27) of the at least one bending tool (25, 25 ', 26, 26') aligned calibration fingers (30, 31) are exercised, be spent in a predefined radial target position relative to the laminated core (2).
    [2]
    2. Method according to claim 1, characterized in that the calibration forces applied via the calibration fingers (30, 31) are exerted with respect to the longitudinal ends (11, 12, 13, 14) of the conductor elements (3, 4), while the at least one bending tool ( 25, 25 ', 26, 26') is still in contact or in positive engagement with the longitudinal ends (11, 12, 13, 14) of the conductor elements (3, 4), so that the longitudinal ends (11, 12; 13, 14 ) of the conductor elements (3, 4) of the at least one bending tool (25, 25 ', 26, 26') in its desired offset angle or in the immediate vicinity of their desired offset angle relative to the laminated core (2) is positioned and positioned in the radial direction to Rotary axis (27) are guided.
    [3]
    3. The method according to claim 1 or 2, characterized in that the conductor elements (3, 4), starting from the radially in the direction of the rotation axis (27) adjustable Kalibrierfingern (30, 31) are pressed in the direction of the axis of rotation (27) and the radially innermost conductor elements (3) via radially further outward conductor elements (4) against a lateral surface (54) of a support mandrel (55) are pressed.
    [4]
    4. The method according to claim 3, characterized in that the support mandrel (55) has a smaller diameter (56) than an inner diameter (57) of the innermost layer (9) of conductor elements (3) is taking their desired radial position.
    [5]
    5. The method according to claim 3, characterized in that the support mandrel (55) has a larger diameter (56) than an inner diameter (57) of the innermost layer (9) of conductor elements (3) is taking their desired radial position, in particular is frusto-conical and within at least one axial cross-sectional plane of its truncated cone has this larger diameter (56), so that the conductor elements (3, 4) during insertion or insertion of the support mandrel (55) in the ring assembly of conductor elements (3, 4) radially to pressed outside.
    [6]
    6. The method according to any one of the preceding claims, characterized in that each receiving groove (5) two or more in the radial direction to the main axis (6) of the laminated core (2) juxtaposed conductor elements (3, 4) to form two or more concentric layers (9, 10) of conductor elements (3, 4) are arranged, wherein the mutually opposite longitudinal ends (11, 13) of the conductor elements (3) within a radially inner layer (9) by means of the associated bending tools (25 ', 26') simultaneously or at least in phases simultaneously with respect to the circumferential direction of the laminated core (2) are bent in opposite directions, and / or that simultaneously or at least in phases at the same time the opposite longitudinal ends (12, 14) of the conductor elements (4) of an immediately adjacent, radially outer layer (10) by means of the associated, further bending tools (25, 26) by a defined angle of rotation with respect to the circumferential direction of the Blechpa kets (2) are bent in opposite directions.
    [7]
    7. The method according to any one of the preceding claims, characterized by bringing the main axis (6) of the laminated core (2) in a horizontal orientation or by maintaining a horizontal orientation of the main axis (6) of the laminated core (2) before the bending operation respectively during the bending process the first and second longitudinal ends (11, 12, 13, 14) and / or the first and second conductor projections (15, 16, 17, 18) of the conductor elements (3, 4) is performed.
    [8]
    8. A device for the automated production of a semi-finished product of a stator (1) of an electrical machine, comprising a support frame (52, 53) for supporting at least one bending tool (25, 25 ', 26, 26') rotatably mounted about an axis of rotation (27) , wherein the at least one bending tool (25, 25 ', 26, 26') is hollow cylindrical or pot-shaped and at a front side (43) of its hollow cylindrical Ab- section (44) a plurality of distributed in the circumferential direction arranged radially to the axis of rotation ( 27) extending Mitnehmerstege (45), wherein between the circumferentially consecutive Mitnehmerstegen (45) respectively free spaces (46) are formed, which free spaces (46) for receiving portions or longitudinal ends (11, 12, 13, 14) of the Bending tool (25, 25 ', 26, 26') to be bent conductor elements (3, 4) are provided with at least one movement drive (49, 50) for the at least one rotatably mounted Biegewerkz eug (25, 25 ', 26, 26'), and at least one electronic control device (51) for the controlled activation of the at least one movement drive (49, 50), characterized in that the at least one bending tool (25, 25 ', 26 , 26 ') is surrounded on its outer circumference by at least one calibrating device (38, 39), which at least one calibrating device (38, 39) has a plurality of radially to the axis of rotation (27) of the at least one bending tool (25, 25', 26, 26 ') aligned Kalibrierfinger (30, 31), and that the calibration fingers (30, 31) by means of at least one adjusting device (32, 33) in the direction of the axis of rotation (27) and in the direction away from the axis of rotation (27) are adjustable.
    [9]
    9. Apparatus according to claim 8, characterized in that the at least one calibrating device (28, 29) has a supporting body (38, 39) with a centrally arranged circular clearance (40), which clearance (40) has a diameter (41). has, which is dimensioned larger than an outer diameter (42) of the at least one therein received bending tool (25, 25 ', 26, 26').
    [10]
    10. Apparatus according to claim 8 or 9, characterized in that an adjustment of the calibration finger (30, 31) is dimensioned such that calibration tips (47) on the Kalibierfingern (30, 31) in the course of a calibration process in the free spaces (46) between the driver webs (47) can penetrate, and that the calibration tips (47) in the course of a bending operation by means of the at least one bending tool (25, 25 ', 26, 26') are positioned outside of the free spaces (46).
    [11]
    11. Device according to one of the preceding claims, characterized in that the adjusting device (32, 33) for the Kalibrierfinger (30, 31) by at least one linear drive (34, 35), in particular by a plurality of working cylinders is formed, which adjusting device ( 32, 33) acts on a plurality of slide guides (36, 37) such that the calibration fingers (30, 31) are movable in the radial direction to the axis of rotation (27) and in the radial direction away from the axis of rotation (27).
    [12]
    12. Device according to one of the preceding claims, characterized in that the at least one calibration device (28, 29) and the at least one bending tool (25, 25 ', 26, 26') on a common support frame (52, 53) are supported.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3533134B1|2022-03-09|Method and device for positioning and tensioning of wire ends for electric machines
    EP1639688B1|2009-05-20|Method and device for introducing wave windings into rotor and stator sheet stacks of electric machines
    AT520311B1|2019-03-15|Method and device for the automated production of a stator of an electrical machine
    WO2019040958A1|2019-03-07|Method and device for holding a laminated core in position together with conductor elements received therein
    DE112016000469T5|2017-10-05|STATOR MANUFACTURING DEVICE AND STATOR MANUFACTURING METHOD
    DE102016111478A1|2017-06-22|Method and device for installing a wire package in an electrical machine
    DE3027457A1|1981-08-20|DEVICE AND METHOD FOR INSERTING PRE-WINDED COILS INTO THE SLOTS OF A STATOR OF A ROTATING ELECTRICAL MACHINE
    DE102018206003A1|2019-10-24|Device and method for aligning a hairpin winding
    AT520203B1|2019-02-15|Method and device for the position holding a laminated core together with incorporated therein conductor elements
    DE102016219480A1|2018-04-12|Mounting device for the simultaneous insertion of copper rods
    EP3167540B1|2020-04-15|Method for producing an electrical machine using pre-formed coils and electrical machine and production tool
    DE102019206416A1|2020-11-05|Erecting device for copper bars and method for erecting
    DE102017114021B4|2019-10-02|Device and method for processing at least one conductor segment of a winding support of an electrical machine
    DE102018206004A1|2019-10-24|Device and method for aligning a hairpin winding
    EP3211773B1|2021-07-28|Method for the production of a stator by pin winding
    EP3659243A1|2020-06-03|Method and device for processing conductor segments of a winding support of an electric machine
    WO2019040961A1|2019-03-07|Method and device for automatically producing a component of a stator or rotor of an electric machine
    EP3534498B1|2021-05-26|Method and device for producing a stator with a coil with skewed air coils
    DE102019131995A1|2021-05-27|Pick-up and rotating unit, wire end forming device provided with it, as well as wire end forming process
    EP1278292B1|2006-03-15|Device for winding a stator having a plurality of poles
    DE102019116235A1|2020-12-17|Pick-up and rotating unit, wire end forming device provided with it, and wire end forming process
    DE102019134785A1|2021-06-17|Device and method for bending wire for a machine element of an electrical machine
    DE102017109101A1|2018-10-31|winder
    EP1283585A1|2003-02-12|Apparatus for winding stator having a plurality of poles
    DE10305199A1|2004-09-09|Manufacturing windings from wire using former, for stator production, by feeding winding wire respectively outwardly around former bodies of former unit
    同族专利:
    公开号 | 公开日
    EP3676944A1|2020-07-08|
    AT520311B1|2019-03-15|
    WO2019040960A1|2019-03-07|
    CN111434014A|2020-07-17|
    US20200350806A1|2020-11-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN204145222U|2014-07-31|2015-02-04|常州金康精工机械股份有限公司|Coil of stator of motor constriction device|
    DE102015217922A1|2015-09-18|2017-03-23|Continental Automotive Gmbh|Method and two-part tool assembly for manufacturing a stator for an electric machine|DE102019130534A1|2019-11-12|2021-05-12|Gehring E-Tech Gmbh|Device for reshaping a conductor section arranged in a stator core and a corresponding method|US2270472A|1940-07-29|1942-01-20|Gen Motors Corp|Machine for manufacturing armatures with bar windings|
    DE10315361A1|2003-04-03|2004-10-14|Robert Bosch Gmbh|Process for the production of windings and winding interconnections|
    DE102004058659A1|2004-12-06|2006-06-22|Robert Bosch Gmbh|Manufacturing device and method for producing an electromagnetic element for an electrical machine|
    WO2009126618A2|2008-04-07|2009-10-15|Remy Technologies, L.L.C.|Method and device for bending electric machine conductors|
    JP5136204B2|2008-05-21|2013-02-06|トヨタ自動車株式会社|Winding method and winding apparatus|
    JP5146779B2|2009-03-13|2013-02-20|アイシン・エィ・ダブリュ株式会社|Coil manufacturing method and coil manufacturing apparatus|
    KR101501867B1|2011-04-05|2015-03-11|도요타지도샤가부시키가이샤|Stator and method of manufacturing stator|
    ITTO20110435A1|2011-05-16|2012-11-17|Atop Spa|APPARATUS AND PROCEDURE FOR THE CONSTRUCTION OF REEL ELEMENTS FOR DYNAMIC ELECTRIC MACHINES WITH BENDING.|
    JP6489368B2|2015-06-04|2019-03-27|株式会社デンソー|Manufacturing equipment for stators for rotating electrical machines|DE102019211859A1|2019-08-07|2021-02-11|Felsomat Gmbh & Co. Kg|Manufacturing system and method for manufacturing a stator with rod conductors|
    AT523761A1|2020-04-21|2021-11-15|Miba Automation Systems Ges M B H|Process, positioning unit and forming system equipped with it for prepositioning free rod end sections of a conductor package|
    法律状态:
    2020-08-15| PC| Change of the owner|Owner name: MIBA AUTOMATION SYSTEMS GES.M.B.H., AT Effective date: 20200702 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50739/2017A|AT520311B1|2017-09-01|2017-09-01|Method and device for the automated production of a stator of an electrical machine|ATA50739/2017A| AT520311B1|2017-09-01|2017-09-01|Method and device for the automated production of a stator of an electrical machine|
    PCT/AT2018/060188| WO2019040960A1|2017-09-01|2018-08-10|Method and device for automatically producing a stator of an electric machine|
    CN201880056112.5A| CN111434014A|2017-09-01|2018-08-10|Method and device for the automated production of stators of electrical machines|
    US16/643,514| US20200350806A1|2017-09-01|2018-08-10|Method and device for automatically producing a stator of an electric machine|
    EP18768753.8A| EP3676944A1|2017-09-01|2018-08-10|Method and device for automatically producing a stator of an electric machine|
    [返回顶部]