JP4255851B2 - Armature core mounting method and armature core mounting device - Google Patents

Description

  The present invention relates to an armature core mounting method and an armature core mounting apparatus in which hollow disks each having a predetermined number of slots and teeth on the outer periphery are stacked with a predetermined skew angle with respect to the axial direction in order to prevent cogging.

  As this type of armature core mounting device, there is one shown in FIGS. 14 to 16 (see, for example, Patent Document 1). As shown in FIGS. 14 and 15, the armature core mounting apparatus 1 holds a hollow disc 6 ′ having a predetermined number of slots 6 a and teeth 6 b on the outer periphery in a state in which the positioning plate 5 prevents rotation in the circumferential direction. Core aligning jig 2 having a cylindrical accommodating portion 2a, a lid 3 for closing the upper surface opening of the core aligning jig 2, and the lid 3 being fastened and fixed to the core aligning jig 2 in a detachable manner. A hollow cylindrical shape in which a knurl 7a is formed on the outer periphery in the center hole 6c of each hollow disk 6 'of the armature core 6 formed by laminating a predetermined number of bolts 4 and the accommodating portion 2a of the core alignment jig 2. And a press 9 that presses the armature shaft 7 through a shaft holding jig 8.

  Then, as shown in FIGS. 14 and 15, a predetermined number of hollow disks 6 ′ are accommodated in the accommodating portion 2 a of the core alignment jig 2. At this time, the slot 6a of each hollow disk 6 'is inserted into the positioning plate 5 protruding from the housing portion 2a of the core alignment jig 2. By this insertion, a predetermined number of hollow discs 6 ′ accommodated in the accommodating portion 2 a of the core alignment jig 2 are prevented from being rotated. Thereafter, the lid 3 is screwed with bolts 4, and the lower end side of the armature shaft 7 held at the upper end side by the shaft holding jig 8 is inserted into the center hole 6 c of each hollow disk 6 ′ of the armature core 6, By press-fitting the armature shaft 7 into the center hole 6c of each hollow disk 6 ′ by the press 9, an armature assembly A in which the armature shaft 7 is assembled to the armature core 6 as shown in FIG. 16 is manufactured.

JP-A-11-89186

  However, in the conventional armature core mounting apparatus 1, when manufacturing one armature assembly A, the lid 3 must be attached to and detached from the upper portion of the core alignment jig 2 via the bolt 4 each time. The assembly workability and mass productivity of the armature core 6 and the armature shaft 7 were poor. Further, since the positioning plate 5 must be fixed to the core alignment jig 2 so as to protrude into the housing portion 2a of the core alignment jig 2, cogging prevention is provided in the upper and lower slots 6a (tooth 6b) of the armature core 6. For this reason, when forming so as to have a predetermined skew angle with respect to the axial direction, the positioning plate 5 must be replaced and fixed each time so as to have a predetermined angle. In addition to being bad, it was difficult to always maintain a certain assembly accuracy.

  Therefore, the present invention has been made to solve the above-described problems, and can improve the assembly workability and mass productivity of the armature core and the armature shaft, and always maintain high assembly accuracy. It is an object of the present invention to provide an armature core mounting method and an armature core mounting device that can perform the above.

According to the first aspect of the present invention, there is provided an armature core in which a hollow disk having a predetermined number of slots and teeth on its outer periphery is positioned by a positioning member so as to have a predetermined skew angle with respect to the axial direction and a predetermined number of layers are laminated. In an armature core mounting method in which an armature shaft having a locking projection formed on the outer peripheral surface is press-fitted into a center hole of each hollow disk, and the cradle for mounting the predetermined number of hollow disks is surrounded. at least a pair of base moved backward relative to cradle the, then, each core guide body provided with at least respectively facing the pair of base of the positioning member is located and is erected vertically, respectively And a receiving space in which a slot of each of the hollow disks is fitted into each positioning member. A predetermined number of hollow discs are stacked and placed on a base, and then the at least one pair of bases are moved forward relative to the cradle to align the predetermined number of hollow discs vertically, A predetermined preliminary load is applied to the uppermost portion of a predetermined number of hollow disks stacked vertically aligned with the cradle by a pressing means to create an armature shaft press-fitting state in a pseudo manner and a predetermined number of cavities from the cradle. Determine the height to the top of the hollow disk, add or remove the hollow disk based on this height determination, adjust the height dimension of the armature core to a predetermined value, and then each positioning The member is inclined by a predetermined angle so that the slot of each hollow disk has a predetermined skew angle with respect to the axial direction thereof, and then the armature shaft is pressed by the pressing means on the outer peripheral surface of the armature shaft. Formed clerk A convex portion is press-fitted into each center hole of a predetermined number of hollow discs having the predetermined skew angle, and then the at least one pair of bases are moved backward relative to the cradle to take out the armature shaft. Next, the armature assembly is manufactured by returning each positioning member to the original vertical standing state.

According to a second aspect of the present invention, there is provided an armature core in which a hollow disk having a predetermined number of slots and teeth on its outer periphery is positioned by a positioning member so as to have a predetermined skew angle with respect to the axial direction and a predetermined number of layers are laminated. In the armature core mounting apparatus in which an armature shaft having a locking projection formed on the outer peripheral surface is press-fitted and assembled in the center hole of each hollow disk, the predetermined number of stacked hollow disks are placed Each core guide body that forms an accommodating space for accommodating the predetermined number of hollow disks between the cradle and the cradle, and the slots of the hollow disks that are fitted into the slots of the hollow disks At least a pair of bases, each of which has a positioning member for giving a predetermined skew angle with respect to its axial direction, and is disposed so as to be movable forward and backward relative to the cradle , Provided in the core guide body, and angle adjusting means for adjusting the inclination angle of the positioning member, a locking protrusion formed on the outer peripheral surface of the armature shaft to press the armature shaft of the respective hollow disc And a pressing means for press-fitting into the center hole.

As described above , according to the armature core mounting method of the first aspect of the present invention, the predetermined preliminary load is applied by the pressing means to the uppermost portion of the predetermined number of the hollow disks stacked vertically aligned with the cradle. Then, artificially create an armature shaft press-fit state, determine the height from the cradle to the top of a predetermined number of hollow disks, and add or remove hollow disks based on this height determination By adjusting the height of the armature core to a specified value, it is not necessary to adjust the height of the armature core after press-fitting the armature shaft into the armature core, and deformation of the armature assembly, such as distortion, is ensured. Can be prevented. As a result, high assembly accuracy can always be maintained, and a highly accurate armature assembly can be manufactured at low cost.

According to the armature core mounting device of the invention of claim 2 , there is provided a receiving base for placing a predetermined number of stacked hollow discs, and a receiving space for receiving the predetermined number of hollow discs between the receiving base. Each core guide body to be formed and each hollow disk slot is fitted with a positioning member that gives a predetermined skew angle with respect to the axial direction of each hollow disk slot. Formed on the outer peripheral surface of the armature shaft by pressing the armature shaft and the angle adjusting means for adjusting the inclination angle of the positioning member. And a pressing means for press-fitting each engaging claw into the center hole of each hollow disk, so that a predetermined number of hollow circles can be obtained simply by moving the pair of bases forward and backward with respect to the cradle. Hold the board Or to easily form the receiving space, it can be taken out armature assembly formed by assembling the armature shaft armature core. Thereby, a high quality armature assembly can be manufactured in a short time and at low cost. In particular, by providing the core guide body with an angle adjusting means for adjusting the inclination angle of the positioning member, the angle adjusting means can arbitrarily set the inclination angle of the positioning member that gives a predetermined skew angle to a predetermined number of hollow disks. The angle can be freely changed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 is a perspective view showing an armature core mounting device according to an embodiment of the present invention, FIG. 2 is a perspective view of the armature core mounting device viewed from the outside, and FIG. 3 is a perspective view of the slider viewed from the inside. 4 is a plan view showing the retracted state of the same pair of sliders, FIG. 5 is a side view showing the standing state of the positioning member of the slider, FIG. 6 is a plan view showing the advanced state of the same pair of sliders, and FIG. FIG. 8 is a perspective view showing a state when the height of the hollow disk in the same lamination completion state is measured, FIG. 9 is a side view showing an inclined state of the positioning member, and FIG. FIG. 11 is a perspective view showing a pressed state of the armature core mounting device, FIG. 11 is a side view of an armature assembly manufactured by the armature core mounting device, and FIG. 12 is a cross-sectional view taken along line XX in FIG.

  As shown in FIGS. 1 to 10, the armature core mounting apparatus 10 has a hollow disc 31 ′ having a predetermined number of slots 31 a and teeth 31 b on the outer periphery so as to have a predetermined skew angle θ with respect to the axial direction. A locking claw (locking convex portion) 32d is formed on the outer peripheral surface 32a in the center hole 31c of each hollow disk 31 'of the armature core 31 that is positioned by the positioning plate (positioning member) 14 and laminated by a predetermined number. The armature assembly A is manufactured by press-fitting the assembled armature shaft 32 and assembling it.

  The armature core mounting device 10 includes a circular pedestal 11 on which a predetermined number of stacked hollow discs 31 ′ are placed, and a forward movement toward the center of the pedestal 11 so as to surround the cradle 11. And a pair of core guide bodies 13 and 13 and a pair of cores which are disposed so as to be movable backward and in which an accommodation space S is formed between the upper surface 11a of the cradle 11 and which accommodates a predetermined number of hollow disks 31 '. It is disposed between the guide bodies 13 and 13 and is fitted into one slot 31a of each hollow disk 31 'to give a skew angle θ to the slot 31a of each hollow disk 31' with respect to its axial direction. A pair of sliders (bases) 12, 12 each having a positioning plate (positioning member) 14 and a predetermined number of hollow discs 31 ′ stacked vertically aligned on the upper surface 11 a of the cradle 11 are held down. Through the body 20 A pressure plate (pressing means) 21 that artificially creates an armature shaft press-fitted state by applying a preload, and a shaft for press-fitting a locking claw 32d of the armature shaft 32 into the center hole 31c of each hollow disk 31 '. And a press-fitting plate (pressing means) 22. The pair of core guide bodies 13, 13 are arranged to face each other.

  As shown in FIG. 1, the cradle 11 is attached to the approximate center of the table 19, and the upper surface 11a serves as a reference surface on which the hollow disks 31 'are stacked. A circular hole 11b into which one end 32b of the armature shaft 32 is inserted is formed at the center of the upper surface 11a of the cradle 11. In addition, a substantially V-shaped cutout portion 11 d is formed at a position opposite to the outer peripheral surface 11 c of the cradle 11 at 180 °.

  As shown in FIGS. 1 to 4, the pair of sliders 12, 12 are formed in a rectangular parallelepiped block shape, and a pair of receiving bases 11 on the table 19 is connected to a table 19 via a piston rod that expands and contracts an air cylinder (not shown). Are provided so as to be able to move forward and backward (slide) in a direction approaching and separating from the notches 11d and 11d. A semicircular arc surface 12b is formed at the center of the front surface 12a of each slider 12 facing each other. A concave portion 12d is formed at the center of the upper surface 12c of each slider 12.

  Further, a pair of core guide bodies 13 and 13 are attached to the front side of the upper surface 12c of each slider 12 so as to sandwich the recess 12d, and a pair of stoppers are provided to sandwich the recess 12d on the rear side of the upper surface 12c. Each of the bodies 15 and 15 is attached. A quadrangular arcuate surface 13b having the same diameter as the arcuate surface 12b of the slider 12 is formed at the opposite corners of the front surface 13a of each core guide body 13. Then, when the pair of sliders 12 and 12 advance (adjacent) to the cradle 11, a predetermined number of hollow disks 31 ′ are formed by the upper surface 11 a of the cradle 11 and the circular arc surfaces 13 b of the pair of core guide bodies 13 and 13. An accommodation space S for accommodating the vertically aligned state is formed.

  As shown in FIGS. 1 to 10, each positioning plate 14 is formed in a rectangular plate shape, and a rotating cylinder (driving means) 16 is provided between each pair of core guide bodies 13 and 13 and each pair of stoppers 15 and 15. Therefore, it is arranged so as to be inclined at a predetermined angle from the vertical standing state. That is, a tapered plate-like tip end portion 14b fitted into one slot 31a of a predetermined number of hollow discs 31 'is integrally formed at the center of the front surface 14a of each positioning plate 14. In addition, a cylindrical portion 14d serving as a rotation center is integrally formed at the center of the rear surface 14c of each positioning plate 14. Since the cylindrical portion 14d of each positioning plate 14 is connected to the rotating cylinder 16, each positioning plate 14 rotates in the left-right direction around the cylindrical portion 14d. Each rotating cylinder 16 is attached to the rear surface 12e of each slider 12.

  As shown in FIGS. 1 to 6, the pair of stopper bodies 15, 15 are attached so as to contact the rear surface 13 c of each core guide body 13. Screw holes 15b are formed on both side surfaces 15a, 15a of the one stopper body 15 and below both side surfaces 15a, 15a of the other stopper body 15, respectively. Adjustment bolts 17 are screwed into the respective screw holes 15b. The tip of each adjustment bolt 17 is an inclined surface 17a. The stopper body 15 and the adjusting bolt 17 constitute angle adjusting means 18 for adjusting the inclination angle of each positioning plate 14. When the inclined surfaces 17a and 17a at the tips of the adjustment bolts 17 and 17 are brought into contact with both side surfaces 14e and 14e of the positioning plate 14, the inclination angle of the positioning plate 14 is determined.

  As shown in FIG. 7, the holding body 20 is formed in a substantially plane C shape having a shaft through hole 20a in the center. Further, an upper small-diameter portion 20b and a lower large-diameter portion 20c are integrally formed on the outer periphery of the holding body 20 in a step shape.

  As shown in FIGS. 8 and 10, the pressure plate 21 is formed in a rectangular plate shape, and each corner portion 21 a is fixed to the lower ends of four shafts 23 connected to a press device (not shown). . In addition, a round hole 21b into which the upper small diameter portion 20b of the holding body 20 is fitted is formed in the center of the pressure plate 21.

  As shown in FIG. 10, the shaft press-fitting plate 22 is formed in a rectangular plate shape, and through holes 22 a that pass through four shafts 23 connected to a pressing device (not shown) are formed in each corner portion. . Further, a cylindrical punch portion 22 b that presses the armature shaft 32 is integrally formed at the center of the lower surface of the shaft press-fitting plate 22.

  As shown in FIGS. 4 and 12, each hollow disk 31 'constituting the armature core 31 has 22 slots 31a and 22 teeth 31b on the outer periphery thereof. Further, as shown in FIGS. 11 and 12, on the outer peripheral surface 32a of the armature shaft 32, there are four locking claws (locking convex portions) 32d extending from one end portion 32b to the other end portion 32c along the axial direction. Each is formed into a long length. Each of the long locking claws 32d is cut and raised in an inverted V-shaped cross section at predetermined intervals by being crushed by, for example, pressing. Insulating coating is applied to a predetermined position of the armature assembly A composed of the armature core 31 and the armature shaft 32. This insulating coating portion (coating agent application portion) is indicated by the symbol B in FIGS.

  Next, the manufacturing procedure of the armature assembly A by the armature core mounting apparatus 10 will be described with reference to FIGS. 1 and 4 to 11.

  First, as shown in FIGS. 1, 4, and 5, a pair of sliders 12, 12 each having a positioning plate 14 erected vertically are placed on a cradle 11 on which a predetermined number of hollow disks 31 ′ are placed. Move backward. As shown in FIGS. 1 and 4, the hollow disc 31 is formed in the accommodation space S formed between the arcuate surface 13 b of each of the core guide bodies 13 facing each other of the pair of sliders 12 and 12 and the cradle 11. The hollow disk 31 ′ is supplied and accommodated so that the opening side of each of the slots 31 a facing each other at 180 ° is fitted to the tip end portion 14 b of each positioning plate 14, and a predetermined number (on the upper surface 11 a of the cradle 11 ( For example, 130 hollow discs 31 ′ are stacked and placed. At this time, a rod-shaped metal core (not shown) is inserted into the center hole 31c of each of the stacked hollow disks 31 'to confirm whether the center hole 31c is formed in each of the hollow disks 31'. .

  Next, as shown in FIG. 6, the pair of sliders 12, 12 are moved forward toward the center of the cradle 11, and the pair of sliders 12, 12 are opposed to each other by the circular arc surfaces 13 b of the core guide bodies 13. A predetermined number of hollow disks 31 'are aligned vertically. At this time, as shown in FIG. 6, the front end portion 14b of each positioning plate 14 is fitted to the back of each slot 31a of a predetermined number of hollow discs 31 ', so that each hollow disc 31' is vertical. Aligned to state.

  Next, as shown in FIG. 7, the restraining body 20 is placed on the top of a predetermined number of hollow disks 31 ′ that are vertically aligned and stacked, and the armature shaft 32 is placed in the shaft through hole 20 a of the restraining body 20. Insert and set one end 32b. The work so far is done manually. Then, after the armature shaft 32 is set, when an automatic operation start button (not shown) is pressed, the pressure plate 21 is lowered, and the round hole 21b of the pressure plate 21 has a small diameter on the upper side of the restraining body 20, as shown in FIG. A predetermined preliminary load is applied to the uppermost portion of a predetermined number of hollow discs 31 ′ placed in a state of being vertically aligned and stacked on the cradle 11 while being fitted to the portion 20 b. This pressurizing operation artificially creates an armature shaft press-fit state, and the height from the upper surface 11a of the cradle 11 to the top of the predetermined number of hollow disks 31 ', that is, the height of the armature core 31 is not shown. Measure (determine) with a sensor. The result of the determination of the height of the measurement sensor is displayed as a difference (mm) with respect to the median height standard value on a display (not shown) on the equipment. In the case of NG, the pressure plate 21 is raised. Then, the operator confirms the contents displayed on the display unit, and adds or removes the hollow disk 31 'to adjust the height dimension of the armature core 31 to a predetermined value. After adjusting the height of the armature core 31, centering is performed again and the automatic operation start button is pressed. As shown in FIG. 9, each positioning plate 14 has both side surfaces 14 e and 14 e of the adjustment bolt 17. It is inclined at a predetermined angle until it comes into contact with the inclined surface 17a, and each slot 31a of a predetermined number of hollow discs 31 ′ has a predetermined skew angle θ in the axial direction (in this case, the predetermined skew angle θ is For example, it is 3.51 ° which is a half of the opening angle of one slot 31a).

  Next, as shown in FIG. 10, if the height (thickness) of the armature core 31 is OK, the shaft press-fitting plate 22 is lowered while being restrained in the above measurement state, and predetermined by the punch portion 22 b of the shaft press-fitting plate 22. Each locking claw 32d formed on the outer peripheral surface 32a of the armature shaft 32 by pressing the other end 32c of the armature shaft 32 into each center hole 31c of a predetermined number of hollow disks 31 'having a skew angle θ of Press fit. At this time, press-fitting is performed while measuring the press-fitting load of the shaft press-fitting plate 22. The measurement result of this press-fit load is displayed on the above-mentioned display, and the load determination point picks up the time point when each locking claw 32d is press-fitted to a specified position. When the pressure input deviates from the specified value, the operator is warned by a buzzer, and the locking claws 32d of the armature shaft 32 are always inserted into the center holes 31c of the predetermined number of hollow disks 31 'by the pressure input of the specified value. Then, the locking claws 32d of the armature shaft 32 are locked and assembled in the center holes 31c of the predetermined number of hollow disks 31 '.

  Next, the pair of sliders 12 and 12 are moved backward with respect to the cradle 11 and the positioning plates 14 are returned to the original vertical standing state. The armature assembly A is formed by assembling the armature shaft 32 to the armature core 31 from the accommodating space S formed between the arcuate surfaces 13b of the core guide bodies 13 facing each other of the pair of sliders 12 and 12, and the cradle 11. Take out.

  In this way, the accommodation space S in which a predetermined number of hollow disks 31 ′ are stacked is formed by a sliding operation of moving the pair of sliders 12, 12 forward (close) and backward (separate) with respect to the cradle 11. The conventional complicated work such as screwing becomes unnecessary, and the locking claws 32d of the armature shaft 32 are locked in the center holes 31c of the predetermined number of hollow discs 31 'constituting the armature core 31. The armature assembly A can be manufactured in a short time by a simple assembly operation. Thereby, the assembly workability and mass productivity of the armature core 31 and the armature shaft 32 can be improved.

  Further, a predetermined preliminary load is applied to the uppermost portion of a predetermined number of hollow discs 31 ′ stacked and placed vertically aligned on the upper surface 11 a of the cradle 11 via the restraining body 20 and the pressure plate 21. Then, the armature shaft press-fitted state is artificially created and its height is judged, and the hollow disk 31 'is added or removed based on this height judgment, and the height dimension of the armature core 31 is adjusted to a predetermined value. By doing so, it is not necessary to adjust the height of the armature core 31 after press-fitting each locking claw 32d of the armature shaft 32 into the armature core 31, and deformation of the armature assembly A such as distortion and bending is surely generated. Can be prevented. As a result, high assembly accuracy can always be maintained, and a high-precision armature assembly A can be manufactured at low cost.

  Furthermore, according to the armature core mounting apparatus 10 used in the above-described armature core mounting method, a predetermined number is placed between the receiving base 11 on which the predetermined number of laminated hollow discs 31 ′ are placed and the receiving base 11. Are fitted into the respective core guide bodies 13 forming the accommodating spaces S for accommodating the hollow discs 31 ′ and the slots 31 a of the respective hollow discs 31 ′, and are inserted into the slots 31 a of the respective hollow discs 31 ′ in the axial direction. Each has a positioning plate 14 for giving a predetermined skew angle θ, and presses a pair of sliders 12 and 12 and an armature shaft 32 which are arranged to be movable forward and backward with respect to the cradle 11. Due to the provision of the shaft press-fitting plate 22 or the like for press-fitting each locking claw 32d formed on the outer peripheral surface 32a of the armature shaft 32 into the center hole 31c of each hollow disc 31 '. By simply moving the pair of sliders 12 and 12 forward or backward relative to the cradle 11, a housing space S for holding a predetermined number of hollow disks 31 ′ can be easily formed, or the armature core 31 can be armature shaft 31. The armature assembly A formed by assembling 32 can be taken out. Thereby, the high quality armature assembly A can be manufactured in a short time and at low cost.

  Further, by providing the core guide body 13 with an angle adjusting means 18 comprising a stopper body 15 and an adjusting bolt 17 for adjusting the inclination angle of the positioning plate 14, a predetermined skew angle θ is applied to a predetermined number of hollow discs 31 ′. The inclination angle of the positioning plate 14 to be applied can be freely changed to an arbitrary angle desired by the angle adjusting means 18.

  Then, for example, a brushed DC motor 40 shown in FIG. 13 is assembled using the armature assembly A. The brushed DC motor (DC motor) 40 is fixed to an armature (armature) 30 having an armature assembly A, a yoke 41 that rotatably supports the armature 30, and an inner peripheral surface of the yoke 41. Four magnets (magnetic poles) 42, four brushes 43 that are in sliding contact with the commutator (commutator) 33 of the armature 30, and a cover 44 that covers the opening of the yoke 41 are provided.

  As shown in FIG. 13, the armature 30 includes an armature assembly A composed of an armature core 31 and an armature shaft 32, an armature coil 34 wound around each tooth 31b of the armature core 31 via each slot 31a, and an armature shaft. And a commutator 33 constituted by 22 segments (commutator pieces) 33a fixed to the other end 32c of 32. Both ends of the armature shaft 32 are rotatably supported by a bearing 45 provided in a recess at the bottom of the yoke 41 and a bearing 46 provided in the center of the cover 14.

  According to the embodiment, after a predetermined number of hollow disks are vertically aligned with the pair of sliders advanced with respect to the cradle, the height dimension of the armature core is adjusted, and then the predetermined number of hollow disks are adjusted. A predetermined skew angle is applied to the hollow disk, but after a predetermined number of hollow disks are vertically aligned by advancing a pair of sliders with respect to the cradle, the predetermined skew angle is applied to the predetermined number of hollow disks. Then, the height of the armature core may be adjusted. Further, although the armature core having 22 slots and teeth has been described, for example, the above-described embodiment can be applied to an armature core having 18 or 26 slots and teeth, respectively. There is no restriction on the number of teeth.

It is a perspective view which shows the armature core mounting apparatus of one Embodiment of this invention. It is the perspective view which looked at the slider of the said armature core mounting apparatus from the outer side. It is the perspective view which looked at the said slider from the inner side. It is a top view which shows the retreat state of a pair of slider of the said armature core attachment apparatus. It is a side view which shows the standing state of the positioning member of the said armature core attachment apparatus. It is a top view which shows the advancing state of a pair of said slider. It is a perspective view which shows the lamination completion state of the hollow disc of the said armature core attachment apparatus. It is a perspective view which shows the state at the time of the height measurement of the hollow disc of the said lamination completion state. It is a side view which shows the inclination state of the said positioning member. It is a perspective view which shows the press state of the said armature core attachment apparatus. It is a side view of the armature assembly manufactured by the said armature core mounting apparatus. It is sectional drawing which follows the XX line in FIG. It is a side view which shows the DC motor with a brush using the said armature assembly. It is sectional drawing which shows the conventional armature core mounting apparatus. It is sectional drawing which shows the principal part of the positioning mechanism of the armature core in the said conventional armature core mounting apparatus. It is a perspective view of the armature assembly manufactured with the said conventional armature core mounting apparatus.

Explanation of symbols

10 Armature core mounting device 11 Receiving base 12, 12 Pair of sliders (base)
13, 13 A pair of core guide bodies 14 Positioning plate (positioning member)
14b Tip 15 Stopper 17 Adjustment bolt 18 Angle adjustment means 21 Pressure plate (pressing means)
22 Shaft press-fitting plate (pressing means)
30 Armature 31 Armature core 31 'Hollow disc 31a Slot 31b Teeth 31c Center hole 32 Armature shaft 32a Outer peripheral surface 32d Locking claw (locking projection)
θ Predetermined skew angle A Armature assembly S Storage space

Claims (2)

Center hole of each hollow disk of the armature core formed by positioning a predetermined number of hollow disks each having a predetermined number of slots and teeth on the outer periphery with a positioning member so as to have a predetermined skew angle with respect to the axial direction In the armature core mounting method, in which an armature shaft having a locking projection formed on the outer peripheral surface is press-fitted and assembled,
At least a pair of bases arranged so as to surround the cradle on which the predetermined number of hollow discs are placed and vertically erected the positioning members are moved backward relative to the cradle. The slots of the hollow discs are accommodated in the accommodating spaces formed between the core guide bodies and the pedestals provided opposite to each other on at least a pair of bases so that the slots of the hollow disks are fitted to the positioning members. Then, a predetermined number of hollow disks are stacked and placed on the cradle, and then the at least one pair of bases are moved forward relative to the cradle to align the predetermined number of hollow disks vertically. Next, a predetermined preliminary load is applied to the uppermost portion of a predetermined number of hollow disks stacked vertically and aligned with the cradle by a pressing means so as to artificially create an armature shaft press-fit state. From Determine the height to the top of the number of hollow disks, add or remove the hollow disk based on the determination of the height to adjust the height dimension of the armature core to a predetermined value, Each positioning member is inclined by a predetermined angle so that the slot of each hollow disk has a predetermined skew angle with respect to the axial direction thereof, and then the armature shaft is pressed by the pressing means, and the outer periphery of the armature shaft A locking projection formed on the surface is press-fitted into each center hole of a predetermined number of hollow discs having the predetermined skew angle, and then the at least one pair of bases are moved backward relative to the cradle. The armature shaft can be taken out, and then each of the positioning members is returned to the original vertical standing state to manufacture an armature assembly . Center hole of each hollow disk of the armature core formed by positioning a predetermined number of hollow disks each having a predetermined number of slots and teeth on the outer periphery with a positioning member so as to have a predetermined skew angle with respect to the axial direction In the armature core mounting device in which the armature shaft formed with a locking projection on the outer peripheral surface is press-fitted and assembled,
A pedestal on which the predetermined number of hollow discs stacked are placed, and each core guide body that forms an accommodating space for accommodating the predetermined number of hollow discs between the cradle and each hollow disc Each of the hollow discs is provided with a positioning member for giving a predetermined skew angle with respect to the axial direction thereof, and is disposed so as to be movable forward and backward relative to the cradle. And at least a pair of bases, an angle adjusting means for adjusting an inclination angle of the positioning member, and a locking projection formed on an outer peripheral surface of the armature shaft by pressing the armature shaft. armature core mounting device characterized by the with a, a pressing means for press fitting into said center bore of the hollow disk.

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