WO2005004311A1 - Appareil et procede d'enroulement de dents de stator - Google Patents

Appareil et procede d'enroulement de dents de stator Download PDF

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Publication number
WO2005004311A1
WO2005004311A1 PCT/CA2004/000982 CA2004000982W WO2005004311A1 WO 2005004311 A1 WO2005004311 A1 WO 2005004311A1 CA 2004000982 W CA2004000982 W CA 2004000982W WO 2005004311 A1 WO2005004311 A1 WO 2005004311A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
stator teeth
winding
stator tooth
tooth
Prior art date
Application number
PCT/CA2004/000982
Other languages
English (en)
Inventor
Robert Faulhammer
Mark Bechtold
Original Assignee
Ats Automation Tooling Systems Inc.
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 Ats Automation Tooling Systems Inc. filed Critical Ats Automation Tooling Systems Inc.
Publication of WO2005004311A1 publication Critical patent/WO2005004311A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/08—Forming windings by laying conductors into or around core parts
    • H02K15/095—Forming windings by laying conductors into or around core parts by laying conductors around salient poles

Definitions

  • the present invention relates generally to electric machinery and in particular to an apparatus and method for winding stator teeth.
  • Stators of such electric machinery typically include a series of connected electrical wire coils formed on stator teeth mounted around the internal periphery of a ring.
  • the electrical wire coils are wound in alternating orientations on the stator teeth, creating a set of alternating magnetic fields about the internal periphery of the ring when energized by a current.
  • the rotor which carries magnets of alternating polarity about its circumference, is rotated within the stator to generate current in the coils as the magnets align with coils.
  • the strength of the current is dependent on the strength of the magnets, the speed at which the rotor rotates, and the number of loops in each coil. Conversely, in the case of electric motors, an alternating current is run through the coils, creating a combination of magnetic attraction and repulsion forces that rotate the magnet-carrying rotor. It has been found that close relational placement of the stator teeth supporting the coils leads to more efficient power conversion of the stator. As the stator teeth reside on the inside periphery of the ring, access thereto is restricted. Further, when the stator teeth are placed close to one another, little working space is provided to wind the wire around the individual stator teeth to form coils thereon.
  • U.S. Patent Nos. 6,121 ,711 and 6,323,571 to Nakahara et al. disclose a method of manufacturing a stator for magnetic disk drive units.
  • the stator includes a stator body comprising two or more segments that are hingedly connected, allowing the segments to be positioned into either a generally linear arrangement or a generally circular arrangement.
  • Each segment has one or more stator teeth on a side thereof.
  • Wire is coiled about the stator teeth when the segments are generally linearly arranged and the wire ends are connected to terminations. The segments are then formed into an annulus and secured.
  • stator teeth that are stacked side-by-side to form a column, with a spacer placed between each adjacent pair of stator teeth, leaving exposed the peripheral edges of the stator teeth about which wire is wound.
  • the column of stator teeth is clamped on opposing ends and mounted onto a rotating platform adjacent a wire dispenser.
  • the wire dispenser winds wire around each stator tooth, one after another, until all of the stator teeth have coils formed thereon.
  • the wire dispenser moves from stator tooth to stator tooth, a span of wire is extended between them. Posts are then inserted into preformed bores around the perimeter of the spacers around which the wire dispenser routes the span of wire.
  • the posts are positioned such that the length of the span of wire extending between two adjacent stator teeth is controlled to some extent.
  • opposing stator teeth surfaces are equipped with mating features to allow the column of stator teeth to be securely clamped at its two opposing ends without spacers.
  • a first set of stator teeth is mounted on a first ring with spaces between the stator teeth equal to the width of a stator tooth. Coils are wound on the stator teeth mounted on the first ring in a first orientation (that is, either clockwise or counter-clockwise).
  • a second set of stator teeth is mounted on a second ring that is complementary to the first ring, with spaces between the stator teeth equal to the width of a stator tooth.
  • an apparatus for winding stator teeth comprising: at least one fly winder for winding wire around stator teeth; and at least one stator teeth holder including stator tooth retainers at spaced locations for retaining stator teeth thereon, said at least one stator tooth holder and fly winder being moveable relative to one another to present each stator tooth to said at least one fly winder for winding a wire coil thereon, wherein said stator tooth retainers are relatively positioned on said at least one stator teeth holder to control a span of wire extending between said stator teeth after said stator teeth have been presented to said at least one fly winder and wound.
  • the stator teeth holder is rotatable to present each stator tooth to the fly winder.
  • the stator tooth retainers are circumferentially spaced about the stator teeth holder and are vertically offset with respect to one another.
  • the stator teeth holder is also vertically adjustable to present each stator tooth to the fly winder.
  • the fly winder winds each stator tooth in a manner so that the coils on the stator teeth have opposite orientations.
  • Each stator tooth retainer includes a channel shaped to accommodate a stator tooth. The channel is defined by a clamp assembly accommodated by the stator teeth holder.
  • the clamp assembly includes a pair of side clamps for engaging opposite sides of a stator tooth.
  • the clamp assembly may further include a biasing member actuable between engaged and disengaged states. In the engaged state, the biasing member biases the stator tooth into engagement with the side clamps.
  • the channel may be sized to form a friction fit with the stator tooth.
  • the stator teeth holder may include a main body including a pair of cutouts formed therein with each of the cutouts accommodating a respective clamp assembly. The main body presents a generally arcuate outer surface bridging the cutouts.
  • an apparatus for winding stator teeth comprising: a fly winder for winding wire around stator teeth; and a stator teeth holder including a rotatable turret having a main body and stator tooth retainers at spaced locations on said main body for retaining stator teeth, said turret being rotatable to present each stator tooth to said fly winder for winding a wire coil thereon, wherein said stator tooth retainers are relatively positioned on said turret in a manner such that after said stator teeth have been wound by said fly winder to include coils of opposite orientation, removed from said turret and placed side-by-side, the span of wire extending between said stator teeth includes substantially no excess length.
  • a method of winding stator teeth comprising: mounting a first stator tooth and a second stator tooth at spaced locations on a tool; presenting said first stator tooth to a winding device and winding a coil having a first orientation thereon; biasing said tool to present said second stator tooth to said winding device; and winding a coil on said second stator tooth having an orientation opposite that of the coil wound on said first stator tooth, wherein the relative locations of said first stator tooth and said second stator tooth on said tool are such that the span of wire extending from said first stator tooth to said second stator tooth includes substantially no excess length when said first stator tooth and second stator tooth are positioned side-by-side.
  • the present invention provides advantages in that since the length of the span of wire between two stator teeth is controlled during winding, the stator teeth can be positioned in a stator side-by-side with substantially no excess wire extending therebetween. Also, by vertically offsetting the stator teeth relative to one another during winding, the stator teeth can be positioned further apart, thus facilitating winding, and allowing the length of wire extending between the stator teeth to be more easily controlled. Further, the present invention allows for stator teeth to be wound in alternating orientations while retaining control over the span of wire extending between pairs of stator teeth.
  • Figure 1 is a side elevation view of an apparatus for winding stator teeth in accordance with the present invention
  • Figure 2 is a perspective view of a portion of the apparatus of Figure 1
  • Figure 3 is a perspective view of a sub assembly forming part of a stator teeth holding tool
  • Figure 4 is a perspective view of a turret forming part of the stator teeth holding tool
  • Figure 5 is a top plan view of the turret
  • Figure 6 shows two stator teeth in their relative positions when mounted on the turret
  • Figure 7 shows the two stator teeth of Figure 6 when removed from the turret and positioned side-by-side.
  • Apparatus 10 includes a plurality of fly winders 12 and a stator teeth holding tool 14. For ease of illustration only one fly winder 12 is shown. Also, since fly winders are well known in the art, for ease of illustration, some of the components of the fly winder have been omitted from the figures.
  • Each fly winder 12 includes a flyer head 24 having a flyer arm 28 and a counterweight 32 joined by a central body section 34.
  • a nozzle 36 is positioned at the distal end of the flyer arm 28 and is operable to dispense wire to be wound around stator teeth when flyer head 24 is rotated about a central horizontal axis.
  • a pair of redirector pulleys 40 and 44 allow wire to be routed to nozzle 36.
  • Pulley 40 is positioned within a channel 46 provided in the flyer arm 28, adjacent the nozzle 36, and pulley 44 is positioned on the central body section 34.
  • Flyer head 24 is mounted on a rotating hollow shaft (not shown), providing flyer head 24 with rotational movement in both directions about an axis coaxial with opening 48 in the central body section 34. Further, the fly winder 12 is operable to move flyer head 24 along the two axes of a horizontal plane.
  • stator teeth holding tool 14 presents stator teeth to the fly winders 12 to enable the fly winders 12 to wind coils thereon.
  • stator teeth holding tool 14 includes a sub assembly 50 supporting a plurality of posts 52.
  • Sub assembly 50 includes a pair of motors 54 and a motor 56.
  • Each motor 54 is associated with a pair of posts 52 and is coupled to the pair of posts by a transmission. In this manner, each motor 54 is operable to rotate each post 52 in its associated pair about the central longitudinal axis of each post 52.
  • Motor 56 is operable to raise and lower the posts 52.
  • a fixturing detail 60 is disposed on the top of each post 52.
  • a turret 62 is slidably received by and rests on each post 52. Only one turret 62 is shown in the figures for ease of illustration.
  • turret 62 includes a pair of pegs 64 around which wire is turned in preparation for termination.
  • a stationary tie-off post 66 is positioned on the sub assembly 50 adjacent each post 52.
  • Each turret 62 is associated with one of the fly winders 12. In conjunction with the two degrees of movement of turret 62 by virtue of the movement of the posts 52, flyer head 24 of its associated fly winder 12 has five degrees of movement relative to the turret 62.
  • FIGS. 4 and 5 better illustrate one of the turrets 62.
  • the turret 62 includes a main body 70 that is generally cylindrical in shape when viewed in top plan.
  • a pair of clamp assemblies 72 are accommodated by cutouts 74 provided in the main body 70 to receive and retain a pair of stator teeth 100a and 100b to be wound.
  • the cutouts 74 are positioned 90 degrees apart relative to the outer peripheral surface 76 of the turret 62 and are vertically offset.
  • the outer peripheral surface 76 of the turret 62 bridging the cutouts 74 is arcuate.
  • Each clamp assembly 72 includes a back plate 80 and a pair of side clamps 82 that define a dove-tailed channel 84 accessible from the top and bottom.
  • the side clamps 82 are designed to engage a stator tooth 100 to be wound that is inserted into the dove-tailed channel 84.
  • the back plate 80 accommodates a cam-shaped member (not shown).
  • the cam-shaped member is actuable between an engaged state wherein the stator tooth 100 is engaged by the side clamps 82 and retained by the clamp assembly 72 and a disengaged state wherein the stator tooth is moveable along the dove-tailed channel 84.
  • the cam-shaped member projects outwardly from the back plate 80 to contact and bias the stator tooth 100 into engagement with the side clamps 82 thereby to retain the stator tooth.
  • each stator tooth 100 includes an outer arc plate 102, an inner arc plate 104 and a winding core 106 between the plates 102 and 104 about which wire is to be wound.
  • the outer arc plate 102 is shaped generally complimentary to the dove-tailed channel 84 to facilitate insertion of the outer arc plate therein.
  • stator teeth 100a and 100b that have not yet been wound with coils are loaded onto each turret 62 by sliding them into the dove-tailed channels 84 of the clamp assemblies 72 before each turret 62 is secured to a respective post 52.
  • the cam-shaped members within back plates 80 are then actuated to engage and bias stator teeth 100a and 100b firmly against side clamps 72.
  • the turrets 62 are then mounted onto the fixturing details 60 disposed on the posts 52 and preferably locked in place to avoid vertical movement of the turrets 62 during winding.
  • one stator tooth 100a is positioned towards a lower end of the turret 62, whereas the other stator tooth 100b is positioned towards an upper end of the turret 62, and spaced 90 degrees about the circumference of the turret 62.
  • the stator teeth 100a and 100b are mounted on perpendicular surfaces of each turret 62, a wire spanning the two stator teeth must undergo a 90 degree change of direction.
  • the arcuate outer peripheral surface 76 of the main body 70 spanning the cutouts allows a span of wire to be gradually routed from the top of one of stator tooth to the bottom of the other stator tooth, thus avoiding unnecessary sharp bends in the wire, which can damage the wire enamel and cause downstream rejects in the electric machinery in which the stator teeth 100a and 100b are utilized.
  • Each post 52 and associated turret 62 are then lowered to present one of the pegs 64 to the flyer head 24 of its associated fly winder 12.
  • a wire extending from stationary tie-off post 66 to the nozzle 36 of the flyer head 24 is turned around the presented peg 64 by moving the flyer head 24 along the two horizontal axes of movement.
  • stator tooth 100a is positioned in the axis of rotation of the flyer head 24 so that the wire is distributed evenly about stator tooth and is generally evenly tensioned thereabout.
  • Flyer head 24 is then positioned in front of stator tooth 100a and a pre-set number of loops of wire are coiled around stator tooth in a counter-clockwise direction, with the flyer 24 head moving incrementally further from turret 62 with each loop of wire thereby to evenly distribute the wire about winding core 106.
  • flyer head 24 moves slowly toward turret 62 all while flyer head 24 continues to rotate about the stator tooth 100a to wind a second set of loops of wire about winding core 106.
  • turret 62 is rotated and lowered to present the second stator tooth 100b to flyer head 24 for winding.
  • flyer head 24 is operated in a clockwise direction to wind a first set of loops of wire around stator tooth 100b, all while flyer head 24 moves incrementally away from turret 62 with each loop.
  • flyer head 24 begins to move slowly toward turret 62 to distribute a second set of loops of wire evenly around winding core 106.
  • turret 62 is lowered and flyer head 24 is moved through the two horizontal axes to form a set of turns about a second of the pegs 64.
  • flyer head 24 moves to wind a set of loops of wire around the stationary tie-off post 66.
  • the wire is then cut between the pegs 64 and the stationary tie-off post 66.
  • turret 62 having two wound stator teeth is removed from post 52 by unsecuring it and lifting it, making room for another turret 62 bearing a set of stator teeth to be wound.
  • Completed stator teeth are then removed from turret 62 by actuating the cam-shaped members to allow the completed stator teeth to slide out of the dove-tailed channels 84.
  • Figure 6 shows a pair of stator teeth 100a and 100b having coils 108 formed thereon and joined by the span of wire 110.
  • a terminating wire end 112 extends from each stator tooth for connection in a stator.
  • Arrows 114 depict the direction in which stator teeth are moved to arrive at their final relative position side-by-side, as shown in Figure 7, wherein span of wire 110 is taut and includes substantially no excess length.
  • adjacent stator teeth have coils of opposite orientation; that is, one is wound clockwise and another is wound counter-clockwise. While the present invention has been described with specificity to mounting stator teeth onto a turret that presents the stator teeth to the fly winder for winding, other types of stator teeth supports will occur to those of ordinary skill in the art.
  • a plate having a number of positions for securing stator teeth in a similar fashion as employed in the described embodiment can be used.
  • the plate can be raised and lowered relative to the fly winder just as the turret, and can be moved relative to the fly winder along a longitudinal axis to present a different stator tooth to the flyer head, simulating the rotation of the turret.
  • the positions of the stator teeth on the turret can be made adjustable to allow different dimensioned stator teeth to be coiled using the same turret.
  • the turret can be made expandable, through additional concentric surface layers on its periphery, through the placement of each stator tooth on a separate arcuate plate whose distance from the center of the turret can be adjustable, or through some other means.
  • the stator teeth are shown as being positioned ninety degrees apart about the circumference of the turret, it is to be appreciated that the stator teeth can be positioned in other configurations.
  • stator teeth can be placed along the circumference of the turret at varying degrees, depending on the circumference of the turret, the relative vertical separation of the stator teeth positions along the vertical length of the turret, and any variation in the radial distance of the stator teeth positions along the su rface of the tu rret.
  • specific reference is made to the posts upon which the turrets are mounted being controlled by a set of motors other methods of controlling the posts will occur to those skilled in the art.
  • pneumatic or hydraulic means can be alternatively employed to control movement of the posts.
  • the turrets can be equipped with clamps in place of pegs to engage the wire ends during the start and end of the winding process.
  • This method of termination is well-suited to work with both a wire which has been previously terminated on a stationary tie-off post, and one which is loosely hanging out of the flyer nozzle, and is especially beneficial for use with heavier gauge wires.
  • the clamp assemblies are described as including cam- shaped members to bias the stator teeth into engagement with the side clamps, other means of securing the stator teeth to the turrets during the winding process can be used.
  • the stator teeth can be frictionally fit into the dove-tailed channels.
  • the apparatus is described as including a fly winder associated with each turrei, fewer fly winders that are moveable laterally between multiple turret locations can be used.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

La présente invention concerne un appareil (10) d'enroulement de dents de stator (100a, 100b), qui comprend au moins un enrouleur à ailette (12) conçu pour enrouler du fil métallique autour des dents du stator. Au moins un support de dents de stator (62) comprend des éléments de retenue (72) des dents du stator en des emplacements espacés sur lesquels sont retenues les dents du stator. Ledit ou lesdits supports de dents du stator (62) et un enrouleur à ailette (12) peuvent se déplacer l'un par rapport à l'autre pour présenter chaque dent du stator à l'enrouleur/aux enrouleurs à ailette de sorte qu'y soit enroulée une bobine de fil métallique. Les éléments de retenue des dents du stator sont positionnées relativement sur le ou les supports de dents du stator afin de réguler une étendue de fil métallique (110) s'étendant entre les dents du stator (100a, 100b) après que les dents du stator aient été présentées à l'enrouleur/aux enrouleurs à ailette et enroulées.
PCT/CA2004/000982 2003-07-07 2004-07-07 Appareil et procede d'enroulement de dents de stator WO2005004311A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48464903P 2003-07-07 2003-07-07
US60/484,649 2003-07-07

Publications (1)

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WO2005004311A1 true WO2005004311A1 (fr) 2005-01-13

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US (1) US20050051661A1 (fr)
CA (1) CA2473186A1 (fr)
WO (1) WO2005004311A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104350669A (zh) * 2012-05-28 2015-02-11 三菱电机株式会社 绕线装置、绕线方法及电枢的制造方法
CN105284036A (zh) * 2013-06-11 2016-01-27 Atop有限公司 用于对电动发电机的极构件进行定位和缠绕的设备和方法
WO2016041909A1 (fr) * 2014-09-16 2016-03-24 Continental Automotive Gmbh Procédé de bobinage d'une pluralité de carcasses de bobines et mandrin segmenté
CN110190719A (zh) * 2018-02-23 2019-08-30 本田技研工业株式会社 集合装置

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GB0912759D0 (en) 2009-07-22 2009-08-26 Control Tech Dynamics Ltd Electric device stator and methods for winding
US11851221B2 (en) 2022-04-21 2023-12-26 Curium Us Llc Systems and methods for producing a radioactive drug product using a dispensing unit
CN114785069A (zh) * 2022-05-16 2022-07-22 江苏润杨精密制造有限公司 一种电动机定子生产加工用绕线装置

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104350669A (zh) * 2012-05-28 2015-02-11 三菱电机株式会社 绕线装置、绕线方法及电枢的制造方法
CN105284036A (zh) * 2013-06-11 2016-01-27 Atop有限公司 用于对电动发电机的极构件进行定位和缠绕的设备和方法
WO2016041909A1 (fr) * 2014-09-16 2016-03-24 Continental Automotive Gmbh Procédé de bobinage d'une pluralité de carcasses de bobines et mandrin segmenté
JP2017528108A (ja) * 2014-09-16 2017-09-21 コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツングＣｏｎｔｉｎｅｎｔａｌ Ａｕｔｏｍｏｔｉｖｅ ＧｍｂＨ 複数のコイル体を巻回する方法及びセグメントスピンドル
US10630154B2 (en) 2014-09-16 2020-04-21 Continental Automotive Gmbh Method for winding a plurality of coil bodies and segmented spindle
CN110190719A (zh) * 2018-02-23 2019-08-30 本田技研工业株式会社 集合装置

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US20050051661A1 (en) 2005-03-10
CA2473186A1 (fr) 2005-01-07

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122 Ep: pct application non-entry in european phase