Abstract: Provided is a stator assembly apparatus configured to assemble a stator, the apparatus including: a plurality of guide members that are provided in a manner enabling insertion into and withdrawal from inside the electrically-insulating members in a central axial direction of the stator core, and are arranged in a radial direction of the slots in a state of having been inserted inside the electrically-insulating members; a presser configured to press the coil radially outward with respect to the stator core; and a controller configured to control movement of the plurality of guide members. Each time the coil moved by the presser come into contact with or approaches the guide member positioned most radially inside from among the plurality of guide members inside the electrically-insulating members, the controller causes the guide member positioned most radially inside to move so as to sequentially withdraw from within the electrically-insulating members.

Abstract: Insulators are formed of a resin material using injection molding and provided at an end portion in an axial direction of a cylindrical stator included in a motor. Each of the insulators includes a wall portion that is formed in a cylindrical shape; a plurality of winding drum portions that consecutively extend from the wall portion so as to be along one end surface in an axial direction of the wall portion from an inner peripheral surface of the wall portion toward an inner side in a radial direction of the wall portion; and a plurality of opening portions that are formed between the respective winding drum portions, which are adjacent in the circumferential direction of the wall portion. A gate mark, which indicates an injection location of the resin material, is formed on the one end surface in the axial direction of the wall portion.

Abstract: A bending mechanism includes: a support member; a pivoting member supported at a distal end of the support member to be pivotable about an axis intersecting the longitudinal axis of the support member; a link disposed along the longitudinal axis and transmitting a force applied at a proximal end thereof to cause the pivoting member to pivot; and an adjuster adjusting stresses in the link so as not to exceed a threshold, at each pivoting position of the pivoting member with respect to the support member. The link includes a first member connected to the pivoting member and a second member disposed closer to the proximal end than the first member is. The adjuster includes a movable member moving in predetermined direction when the first and second members are relatively moved, and a spring biasing the movable member in such direction as to prevent the movement of the movable member.

Abstract: A winding method for a BLDC motor is disclosed. The winding method is configured to successively wind two magnetic wires across each core slot and its adjacent core slot (over two pitches) in a brushless direct current (BLDC) motor including a U-phase winding, a V-phase winding, a W-phase winding and a GND winding, 12 core slots, and a ground terminal. The winding method includes: a first step of moving and winding the magnetic wires; a second step of moving and winding the magnetic wires; a third step of moving and winding the magnetic wires; a fourth step of moving, winding, moving, and cutting the magnetic wires; a fifth step of moving and winding the magnetic wires; and a sixth step of moving the magnetic wires, passing the magnetic wires through an adjacent core slot and the ground terminal, and moving and cutting the magnetic wires.

Abstract: A slot flaring apparatus is presented herein. The slot flaring apparatus includes a base and flaring tool. The base is configured to receive and secure a stator that has a plurality of core slots. The flaring tool is configured to be controllably pressed against the stator and has a plurality of flaring teeth. Moreover, each tooth of the plurality of flaring teeth is configured to insert into and form a respective slot liner which has been inserted into the corresponding core slot.

Abstract: A tool (110) is presented for installing a wedge (104) in a slot (101) of a stator core (100). The tool (110) includes a housing (112) and a shaft (128) extending axially from the housing. An end of the shaft (128) is positioned in the slot (101) on a first side of the wedge (104) to engage a wedge surface (118). The tool (110) further includes a pump (120) operatively coupled to the shaft (128) to actuate the shaft in an axial direction (122) external to the housing (112) to install the wedge in the slot. The tool (110) further includes a tongue (124) inserted in a vent gap (126) of the slot (101) on the first side of the wedge to brace the tool against the slot during the installation of the wedge. A system (200) and method (300) are also presented for installing the wedge.

Abstract: A supporting basket for an end winding of a stator winding of an electrical machine, the supporting basket including: at least one supporting ring; a plurality of supporting brackets arranged circumferentially distributed along the at least one supporting ring and attached to the at least one supporting ring; and a plurality of round connectors arranged radially externally on the supporting brackets, the round connectors extending circumferentially and being attached to the supporting brackets; wherein the supporting brackets, the at least one supporting ring, and the round connectors comprise an impregnation formed by dip-impregnation as a preassembled unit.

Abstract: The insertion of electrically insulating paper from a continuous roll into slots of a stator created by outwardly projecting teeth is described herein. The insertion of the insulating paper is done by the insertion of prewound coils in the stator slots. The electrically insulating paper is not cut prior to its insertion in the slots, thereby completely covering the outer surface of the stator. The insertion systems and methods described herein are also optionally concerned with the insertion of interphase insulation paper between the different coils inserted in the stator slots and with the insertion of slot closing wedges.

Abstract: A clamping apparatus capable of clamping various semiconductor substrates is provided. The clamping apparatus includes includes a main body, and a support plate partially coupled to the main body. The support plate is movable vertically. In addition, the clamping apparatus further includes a fixed gripper coupled and fixed onto the main body and a movable gripper disposed on the main body. The movable gripper is movable horizontally.

Abstract: An stator manufacturing apparatus including an substantially cylindrically-shaped insertion jig from which the rectangular wire is axially detachable, and having protrusions respectively provided at positions aligned with the slots on an outer peripheral surface thereof to protrude radially, and one end-side restricting members respectively provided at positions offset from the protrusions formed in the circumferential direction on an inner diameter side of an inscribed circle of teeth each located between adjacent ones of the slots so as to protrude toward one axial end side. With the linear portions and the slots being aligned with each other, the insertion jig is inserted into the stator core from the one end side of the insertion jig, and is removed from the stator core toward the other end side, so as to respectively dispose the linear portions at predetermined positions in the slots.

Abstract: A set of tools for removing a half turn of a coil from a slot of a dynamoelectric machine. The set of tools includes a coil cutting tool for cutting the coil, an upending tool that grips the coil at an end of the coil where the coil was cut and hydraulically or pneumatically lifts the end of the coil at least partially out of the slot, and an extraction tool that hydraulically or pneumatically grips the upended portion of the coil and pulls the coil from the slot hydraulically or pneumatically a segment at a time.

Abstract: The present invention provides an apparatus for the horizontal stacking of laminations 10 and donuts to form a stator core. A stator generator frame 2 has multiple keybars 6 that run the axial length of the frame. The laminations 10 have grooves 12 there-in that engage the keybars to provide a secure fit of the laminations to the generator frame. By extending two or more of the keybars 6, these extensions 7 may be used as rails on which the laminations may be horizontally inserted into the stator frame.

Abstract: The insertion of electrically insulating paper from a continuous roll into slots of a stator created by outwardly projecting teeth is described herein. The insertion of the insulating paper is done by the insertion of prewound coils in the stator slots. The electrically insulating paper is not cut prior to its insertion in the slots, thereby completely covering the outer surface of the stator. The insertion systems and methods described herein are also optionally concerned with the insertion of interphase insulation paper between the different coils inserted in the stator slots and with the insertion of slot closing wedges.

Abstract: An apparatus for loading stator windings into a stator core includes an arbor member including a body having a central axis and an outer diametric portion provided with a plurality of slots. An insertion element is rotatably mounted adjacent the arbor member. The insertion element includes a plurality of slot elements that are configured to register with the plurality of slots. A loading member is rotatably mounted adjacent the insertion element. The loading member includes a plurality of slot members that are configured to register with the plurality of slot elements. The loading member is selectively operated to receive a stator winding into one of the plurality of slot members and transfer the stator winding into one of the plurality of slot elements. The at least one insertion element is selectively operated to transfer the stator winding into one of the plurality of slots of the arbor member.

Abstract: Stator designs have wide-mouth slots between adjacent poles. Wire coils with high slot fill conductivity are formed around the poles. In some designs, the wire coils are wave wound around the poles. Thick bar conductors can be used for making the wire coils. The wire coils may be inserted using nozzle dispensers or transferred from a pre-form mandrel. In other designs, the wire coils are pre-formed on transferable pockets that are then mounted on the poles. Optional pole extensions or shoes can be attached to the stator poles after the wire coils are formed around the poles.

Abstract: The present invention provides an apparatus for the horizontal stacking of laminations 10 and donuts to form a stator core. A stator generator frame 2 has multiple keybars 6 that run the axial length of the frame. The laminations 10 have grooves 12 there-in that engage the keybars to provide a secure fit of the laminations to the generator frame. By extending two or more of the keybars 6, these extensions 7 may be used as rails on which the laminations may be horizontally inserted into the stator frame.

Abstract: A method and apparatus which quickly clamps onto the copper strand bundle in the slot of a dynamoelectric machine and rips out the coil from the slot one axial position at a time. As the copper bundle is ripped from the slot the tooling moves along the slot from one end to the other.

Abstract: An assembly mechanism is provided to press an inner stator into a receiving space of an outer stator. The assembly mechanism includes a pressing unit and a first positioning plate. The pressing unit includes a supporting device to support the outer stator, and a pressing device movable relatively to the supporting device. The first positioning plate is attached to a top of the outer stator. The first positioning plate defines an opening forming a clearance fit with the inner stator. The opening receives the inner stator and guides the inner stator to move into the receiving space of the outer stator under a pressing action of the pressing device. An assembly method is also provided.

Abstract: A method of manufacturing a stator in a rotating electric machine. In this method, each slot has a slot peripheral wall and a slot opening, covered with an insulation coating made of an electrical insulation material. The slot peripheral wall SW has a slot bottom wall, a pair of slot side walls opposing to each other and continuing to end portions of the slot bottom wall. The insulation coating is formed continuously from the slot bottom wall to the pair of slot side walls, and a pair of holding grooves opposing to each other is formed in the insulation coating at the vicinity of the slot opening. The groove walls of the pair of the holding grooves are formed in the insulation coating, and an electrical insulation member to close the slot opening is inserted in the pair of holding grooves and held between the pair of holding grooves.

Abstract: A stator bar installation fixture and method for installing stator bars into specific stator core slots within a stator core of rotating electrical equipment. The stator bar installation fixture includes rotating mechanisms, rotatingly fixed at each end of the rotating electrical equipment, for supporting and controlling an angular positioning of a stator bar insertion mechanism relative to the stator core. The stator bar insertion mechanism supports a stator bar within the stator core, angularly locates a stator bar in alignment with the specific stator core slot, and inserts the stator bar into the specific stator core slot.

Abstract: The present invention provides an apparatus for the horizontal stacking of laminations 10 and donuts to form a stator core. A stator generator frame 2 has multiple keybars 6 that run the axial length of the frame. The laminations 10 have grooves 12 there-in that engage the keybars to provide a secure fit of the laminations to the generator frame. By extending two or more of the keybars 6, these extensions 7 may be used as rails on which the laminations may be horizontally inserted into the stator frame.

Abstract: In a method and apparatus for mounting and retention of ancillary equipment to cover panels of a magnetic field generator of a magnetic resonance imaging system having a cryogenic refrigerator and/or liquid cryogen housed within at least an outer vacuum container, ancillary equipment, cables and conduits are attached to the magnetic field generator, by integrating the electronic assemblies, cables and conduits into a set of modular covers which are connected to each other on installation. The covers may be mechanically mounted directly to the OVC, enabling them to be quickly fitted either in the factory or on the user's site.

Abstract: A device to press a rotatably supported shaft of a rotor of a spindle motor for a hard disk drive into a shaft receiving portion of an associated stator housing by means of a first pressing tool acting on the rotor and a second pressing tool acting on the stator housing. A first aligning apparatus for the rotor and a second aligning apparatus for the stator housing are provided. The first and second aligning apparatuses are formed in such a way that they guide the rotor by means of a rotor carrier and the stator housing by means of a stator carrier. The rotor carrier and the stator carrier are exactly aligned with respect to each other during the pressfitting process. The first pressing tool has a first pressing element acting on the shaft of the rotor that is independent of the first aligning apparatus and the second pressing tool has a second pressing element acting on the stator housing that is independent of the second aligning apparatus.

Abstract: A stator for a motor includes a stator core, an insulator, and coils. The stator core includes an annular portion and teeth, which extend radially from the annular portion. The stator core is divided into core segments in the circumferential direction. Each core segment has an arcuate portion and one of the teeth, which extends from the arcuate portion. The insulator insulates each coil wound around one of the teeth from the stator core. The insulator includes coupling portions at positions corresponding to the circumferential ends of the arcuate portions. Each coupling portion couples the adjacent core segments to be rotatable relative to each other. The insulator facilitates manufacture of the stator.

Abstract: A method of forming a winding core for an electric motor includes providing a hollow jig having a guide, sliding plates, each having a guide and a central opening, onto the guide in the jig where the guides mate, and pressing a shaft into the central opening of the plates. The plates are then compressed to form a lamination and secured in compression by a lock nut on the shaft.

Abstract: A plurality of single-pole coils are retained by a coil retaining device, the single-pole coils are arranged such that the coil insertion portions of each single-pole coil confront the inner circumference openings of the slots and may be generally parallel to the axial direction of the motor core, each single-pole coil is moved linearly toward the motor core such that the coil retaining device and the moving locus before the adjoining coil insertion portions in the adjoining single-pole coils are inserted into the slots are parallel or approach the more from the inner circumference side to the outer circumference side and the two coil insertion portions of each single-pole coil are moved such that they may start their movements simultaneously and at equal velocities.

Abstract: The wedge removal apparatus includes an elongated frame having telescopic elements at opposite ends with cylinders to engage pads along opposite sides of the frame against diametrically opposed wedges of stator core slots. The frame mounts a linear drive assembly carrying a carriage for longitudinal movement relative to the drive assembly and frame. The carriage mounts diametrically opposed heads and a cylinder displaces the heads radially outwardly to engage the wedges and compress underlying ripple springs. Saws carried by the heads cut through the wedges as the carriage is displaced along the frame and without binding because of the force applied to the wedges compressing the ripple springs. The linear drive assembly is rotated to discrete circumferential positions to cut the wedges of additional diametrically opposed slots.

Abstract: A technique for separating the stator leads of an electric motor during the manufacturing process. The technique comprises a system having a lead gathering assembly, a lead separator, and a drive mechanism. The lead gathering assembly is adapted to gather together a plurality of stator windings extending from a stator. The lead separator having a plurality of teeth adapted to separate a stator winding from the plurality of stator windings gathered together by the lead gathering assembly. The drive mechanism is adapted to drive the lead separator into the plurality of stator windings. The lead separator has teeth to separate each of the stator windings gathered together by the lead gathering assembly.

Abstract: A motor manufacturing method includes: a coil formation step of forming a unipolar coil, having coil inserting portions at two positions and coil end portions at two positions, in to a shape that changes such that a size in a height direction parallel to the coil inserting portion is larger in an inner peripheral side corresponding to a diametrical direction of a motor core along a direction of a winding axis center, than in an outer peripheral side; and a coil insertion step of disposing the unipolar coil in such a manner that the coil inserting portions in the unipolar coil respectively face toward inner peripheral opening portions of slots and are substantially parallel to an axial direction of the motor core, and inserting the coil inserting portions of the unipolar coil into the slots by moving the unipolar coil toward the motor core substantially linearly, while holding the motor core such that protrusion dimensions at both ends protruding from both end surface positions in an axial direction of the mot

Abstract: A method of forming a stator core assembly for an electric machine includes providing a stator core having a plurality of radially extending slots, forming a flat wire pack having a plurality of continuous electrical wires, shaping the flat wire pack into a substantially cylindrical shape, and engaging the substantially cylindrically shaped flat wire pack with the stator core such that the continuous electrical wires are interlaced within the slots of the stator core.

Abstract: A resin fixture that is inserted into a stator for an electric motor for a pump for the purpose of insulating the stator with resin. The resin fixture includes a rubber cover that is inflated. The fixture thereby prevents the stator bore from filling with resin.

Abstract: A method of manufacturing a stator winding includes a twisting step of U-shaped conductor segments having a pair of straight portions by moving the straight portions in the circumferential direction while restraining the turn portions of the U-shaped conductor segments in the axial direction by a pressing tool. After the previously twisted U-shaped conductor segments are inserted into slots of a stator core, the straight portions are bent in the circumferential direction. The pressing tool is constituted of a stationary top plate that has recesses into which the straight portions are inserted and a movable top plate that is movable to close the recesses after the straight portions are inserted in the recesses.

Abstract: In a bonding method in which two display panels 7A, 7B are held by the two panel holding portions 31a, 31b provided on the panel support table 31 positioned by the XY? table 30 so as to position the first pressure bonding head 25A and the second pressure bonding head 25B for conducting pressure bonding individually, according to the result of positional detection of the camera 37 and the recognizing portion 65, the display panel 7A is positioned to the first pressure bonding head and an object of pressure bonding is bonded by pressure. In this pressure bonding step, under the condition that a state of holding the display panel 7A is released, the display panel 7B is positioned to the second pressure bonding head 25B.

Abstract: Methods and apparatus for insulating interior walls of lamination slots of dynamo-electric machine components are provided. The relative speeds and sequence of cutting, forming, and inserting a piece of insulation material into the slot of the lamination core of a dynamo-electric machine component may be determined by a central drive mechanism. The central driving mechanism may have a plurality of cams, rotating with a main shaft, to control the translations of cutting, forming and inserting members.

Abstract: The invention relates to a method for application of the main insulation to conductor bars, in particular conductor bars for stator windings, with the conductor bars having a rectangular cross section. The method comprises the following steps: connection of the individual conductor bars to form a quasi-infinite conductor bar with a rectangular cross section; sheathing of the quasi-infinite, rectangular conductor bar with main insulation; cutting out or detaching of the unusable connecting points.

Abstract: A stator and a stator manufacturing method is provided in which a space factor can be improved, while reducing the number of components and simplifying the manufacturing process. A stator comprises a plurality of teeth cores 11 positioned at predetermined intervals on a predetermined circumference, a core back core 12 provided on a circumferential outside between adjacent teeth cores, and stator windings 13 which are wound around the teeth cores. An approximately U-shaped insulating sheet 14 is provided between adjacent teeth cores 11 with the ends of the sheet facing towards the circumferential outside, the insulating sheet 14 is provided between the teeth cores 11 and the stator windings 13, and the ends of the insulating sheet 14 are bent inward and occluded by an inner end surface of the core back core 12 which is inserted from the circumferential outside.

Abstract: Plural slots are formed in a cylindrical stator or rotor core of a rotary electric machine. An insulation sleeve having a substantially rectangular cross-section is inserted into each slot, and conductors are inserted into an inner space of the insulation sleeve disposed in the slot. The inner space of the insulation sleeve is enlarged by inserting the conductors, thereby strongly pressing the corner portions of the insulation sleeve against the corners of the slot. Thus, the insulation sleeve is firmly kept in the slot, avoiding its sliding movement in the slot in the process of inserting the conductors. The insulation sleeve is prevented from being damaged by its sliding movement in the slot.

Abstract: Prewound coils are axially drawn into grooves of stators or rotors of electric machines. This is performed by means of a draw-in star, which can be pushed forward through their bores, behind which cover strips (16), made of insulated material, are pushed into the grooves (12) in front of their opening slits in the course of the draw-in process. To prevent the cover strips (16) from being partially pulled out of the grooves (12) when the draw-in star (28) is pulled back, it is provided that the cover strips (16) are supported against a retrograde movement during a defined first section of the return movement of the draw-in star (28), for example in that the pushers remain in their pushed-forward position during the first phase of the return movement of the draw-in star (28).

Abstract: A device is provided for producing a distributed wave winding. To improve the currently used method for producing a distributed wave winding the device provides for a relative indexing to be carried out between a template and a coil receiver after a first concentric coil group has been transferred from the template to the coil receiver. After this indexing, a further concentric coil group of the same phase, with a connection to the first coil group, is wound on the template and transferred to the coil receiver. The template and coil receiver rotate synchronously during the winding of the further coil group.

Abstract: A methodology of sleeving at least one lead of a stator is provided. The methodology includes the steps of robotically selecting at least one of the stator leads, and robotically positioning an insulating sleeve over the stator lead.

Abstract: A system of manufacturing a stator is provided. The system comprises: a pallet, which includes, a base portion, a first ring rotatably disposed within the base portion for supporting the stator, a second ring rotatably disposed in the base portion, the second ring including a plurality of clips for releasably securing a plurality of leads extending from the stator; a conveyor system for supporting the pallet and moving the pallet between a plurality of stations; and a means for sleeving at least one of the plurality of leads of the stator at one of the plurality of stations.

Abstract: A method of manufacturing a stator of a rotary electric machine is comprised of the following steps: providing a plurality of U-shaped basic conductor segments and a plurality of U-shaped connection conductor segments; forming the U-turn portions and straight portions into crossover portions, inserting the pair of straight portions of the basic and connection conductor segments into prescribed two slots of a stator core from one end thereof to extend from the other end, bending one of the pair of straight portions in the direction opposite to the other of the pair of extended straight portions so that the edges of straight portions extending from the prescribed slots can adjoin each other, connecting the adjoining edges to form a plurality of phase coils, and removing the U-turn portion of the connection conductor segments to form terminals of the phase coils.

Abstract: Insulating slot liners for insertion into stator core winding slots are formed from a narrow-width reel of insulating material. The width of the material is determined by the inner circumferential surface of the winding slot that must be insulated, instead of being based on the axial length of the stator core as has been the practice in the past. As a result, slot liners may be easily produced for stator cores of different axial lengths by simply adjusting the length of material cut from the reel. Preferably, the cutting mechanism used to cut the length of material is adapted to form a pair of opposed cuffs when the material is cut. An insulator blank formed in this manner is pushed into a die, thereby forming a U-shaped slot liner. A transfer mechanism functions to move the slot liner into a respective winding slot. The slot liner preferably passes through a reduced diameter guideway defined in a guide element as it is moved into the winding slot.

Abstract: A lacing mandrel for use when lacing a stator has an elongate shaft with an enlarged head, or sizing plug, proximate an upper end. The sizing plug permits an operator to easily and readily determine whether the bore of the stator is obstructed, both before and after the lacing operation. The mandrel employs an annular slip ring, having a plurality of radially extending ribs, during the lacing operation. Each radially extending rib extends into a corresponding channel of the stator, which channel opens into a corresponding slot of the stator. The annular slip ring rotates with the stator during the lacing operation, such that each rib remains positioned in its corresponding channel. Thus, slot liners, or wedges, utilized on the stator are retained in their respective slots during the lacing operation, and are not forced out by the lacing needles so as to obstruct the stator bore.

Abstract: A system and a method for forming, storing and loading slot cell insulators into slots in a stator core of a dynamoelectric machine. The system includes a forming assembly for forming slot cell insulators and a loading assembly for storing the insulators and loading the insulators into the stator core. The system also includes a transfer mechanism for moving the insulators from the forming assembly into the loading assembly. In the process, these elements cooperate to align end portions of the insulators before they are inserted into the stator core, thereby improving the efficiency of the loading procedure. When the stator core is ready to receive the insulators, the loading assembly simultaneously loads all of the insulators into the stator core.

Abstract: Improvements in coil placing tooling of the type employed to insert prewound coils in the slots of dynamoelectric machine stator cores which tooling has an annular collet for maintaining wedge guides axially and radially in position, and the wedge guides in turn maintain blades radially in position are disclosed. The blades are readily removable and replaceable by releasing the collet for limited displacement relative to the blades, moving the collet to a position where selected wedge guides are freed axially and radially, removing certain of the selected wedge guides, and subsequently removing certain of the blades associated with the removed wedge guides. Improvements in reversible blades for such coil placing tooling are also disclosed. Certain ones of the blades comprise an elongated blade of generally uniform cross-sectional configuration with a transverse support dowel receiving hole near each end.

Abstract: An apparatus for injecting a plurality of coil groups into a stator core of a dynamoelectric machine is described. The injection apparatus includes, in one embodiment, a stripper assembly including a first stripper. The first stripper includes an injection disk which, in one embodiment, is formed from nylon. A first surface of the injection disk is configured to contact a segment of at least one of the coils to move the coil axially along the blades of the injection apparatus without contacting portions of the coil in gaps between the blades.

Abstract: In a device (1) for pressing in slot sealing pieces (12, 14) for winding bars (20) inserted into the slots of a stator laminated core of an electric machine, a plunger (8) is arranged by means of a force-generating device (4) in a collet (2) with a cam (3). The plunger (8) and the cam (3) are situated opposite one another and move toward one another in the fashion of a screw clamp during operation of the force-generating device (4). In this arrangement, when slot sealing pieces are pressed in the cam (3) engages in an axial slit (11) of a first, upper prismatic body (12), and the plunger (8) acts on an end face (13) of a second, lower prismatic body (14). The device (1) for pressing in slot sealing pieces (12, 14) is arranged with lifting devices (22) on a support frame (23) which can be moved along the slot sealing pieces (12, 14) in the stator laminated core.

Abstract: In a method of inserting motor coils and slot insulators, a coil inserting jig is moved between a layer insulator inserter and a wedge inserter, and a core holder is moved between a predetermined location and the wedge inserter, so that a stator core is fitted onto the coil inserting jig when the coil inserting jig is located at the wedge inserter. The coil inserting jig receives layer insulators from the layer insulator inserter. The layer insulators are inserted into slots of the core with lower coils. Wedges are inserted into the core slots with upper coils when the coil inserting jig is located at the wedge inserter.

Abstract: An inner diameter block for blocking the inner diameter of windings of an electric motor includes a plurality of first segments and a plurality of second segments arranged in an alternating manner. The segments are movable radially outwardly to block the inner diameter of the windings. One of the segments is generally pie shaped, having an arcuate outer surface and ears extending circumferentially to define part of the outer surface. These first segments define gaps which receive second segments. The first and second segments have sloping inner surfaces which define a core in which an expanding cone is received. The cone, when moved axially in the core, urges the second segments radially outwardly. The second segments then force the first segments radially outwardly. The interaction of the second segments with the ears of the first segments provide a substantially continuous, gap-free outer surface to the inner diameter block at all stages of expansion.