JP2003088056A - Method for manufacturing dc motor, and coil jumping-out preventive ring insertion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a DC motor wherein the hammer-driving of an armature coil which is jumped out of a commutator riser part into the part is unnecessary, so that the generation of dielectric breakdown caused by striking the commutator riser part by the hammer can be prevented. SOLUTION: A coil jumping-out preventive ring R is externally engaged with the commutator riser part 44 in the state that an end portion 46 of the armature coil 45 is caulked in a slot of the commutator riser part 44 by using semi-automatic coil insertion equipment 20. After that, bind tapes 47 are wound around both end portions of the armature coil 45, the coil jumping-out preventive ring R is detached, an residual end portion of the armature coil 45 is turned, and welding to the commutator riser part 44 is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC motor manufacturing method and a coil pop-out prevention ring insertion device used therein.

[0002]

2. Description of the Related Art Conventionally, for example, an armature 40 of a DC motor shown in FIG. 7 is manufactured as follows. First, the core 42 is fixed to the shaft 41, the amateur coil 45 is inserted into the core 42, and then the commutator side is placed downward in the deploying device, and the coil projecting from the commutator side end face of the core 42 by this deploying device. Coil expansion is performed by twisting the end portion 46 of 45 in one direction by a predetermined angle. After that, the semi-finished product taken out from the unfolding device is turned upside down and the commutator 43 is inserted into the shaft 41, and then the amateur coil 4 is inserted, for example, by a semi-automatic coil inserting device.
The end 46 of 5 is pushed into the slot of the commutatorizer 44. After this, after taking out from the semi-automatic coil inserting device and removing the surplus part of the amateur coil 45 coming out from the commutatorizer section 44 by lathe processing,
The commutator riser portion 44 and the end portion 46 of the amateur coil 45 are welded by, for example, TIG welding, and finally the bind tape 47 is wound around both end portions of the coil. The bind tape 47 is also wound around the center of the coil as needed.

In the semi-automatic coil insertion device, the end portions of the amateur coil are pushed into the slots of the commutatorizer portion by synchronously tightening a plurality of pushing metal fittings from the outside of the amateur coil toward the shaft.

[0004]

However, since the coil end is turned and then welded to the commutator riser, the amateur coil may be ejected from the slot due to so-called spring back when the pushing metal fitting is loosened. The amateur coil that pops out is hammered into the slot.

For this reason, it takes time and effort to hit the amateur coil, and the insulating layer of the commutator riser may be hit and broken to cause dielectric breakdown.

A DC motor manufacturing method according to the present invention (hereinafter,
This is called the method of the present invention. ) Solves the problems of the prior art and eliminates the need to hammer the amateur coil into the commutatorizer, and a DC motor manufacturing method that does not cause insulation breakdown due to hammering of the amateur coil into the commutator riser. The purpose is to provide.

Further, in the method of the present invention, the coil pop-out prevention ring is supported by the semi-automatic coil inserting device with the commutator facing upward and is externally fitted to the commutator riser portion of the amateur. An object of the insertion device (hereinafter, referred to as the device of the present invention) is to provide a coil pop-out prevention ring insertion device that can automatically fit the coil pop-out prevention ring onto the commutator riser.

[0008]

In order to achieve the above object, the method of the present invention comprises inserting the end of the amateur coil into the slot of the commutatorizer by tightening the push-in fitting of the semi-automatic coil inserting device, With the push-out fitting tightened, fit the coil pop-out prevention ring onto the commutator riser, and then loosen the push-fitting fitting.
After that, wind the binding tape around both ends of the amateur coil, remove the coil pop-out prevention ring, and then after turning the surplus end of the amateur coil, weld the amateur coil to the commutatorizer. Characterize.

According to the method of the present invention, the coil pop-out prevention ring is fitted onto the commutator riser with the amateur coil being pushed into the commutator riser, so that when the push-in fitting is loosened, the coil pops out from the commutator riser. The amateur coil to be stopped is restrained by the coil pop-out prevention ring and stays in the slot of the commutator riser. After that, by winding the bind tape, the end of the amateur coil is held in the slot of the commutatorizer, and it is not necessary to hit the amateur coil with the hammer to the commutatorizer. There is also no risk of dielectric breakdown of the commutator riser when hitting the coil into the commutator riser.

In order to achieve the above object, the device of the present invention internally fits a coil pop-out prevention ring which is externally fitted to the commutator riser part of the amateur supported by the semi-automatic coil inserting device with the commutator facing up. A head for supporting the same, a stocker for accumulating and stacking the coil pop-out rings in the vertical direction, and a horizontal movement of the head over the upper side of the stocker and the upper side of the armature supported by the semi-automatic coil insertion device, and a predetermined amount. A support means for supporting the head to move up and down within a stroke; a horizontal drive means for horizontally moving the head through the support means; and a lift drive means for moving the head up and down through the support means. To do.

According to the apparatus of the present invention, when the head is positioned on the stocker and lowered by the ascending / descending driving means, the first coil pop-out prevention ring among the coil pop-out prevention rings accumulated in the stocker is located below the head. After being fitted inside,
When the head is lifted by operating the lifting drive means in the reverse direction, the highest coil-out prevention ring accumulated in the stocker can be supported by the head and picked up from the stocker. After that, when the head is processed by the elevating driving means after the head is moved above the amateur supported by the semi-automatic coil inserting device by the horizontal driving means, the coil pop-out prevention ring is fitted onto the commutator riser portion. be able to.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the method of the present invention and the apparatus of the present invention will be specifically described with reference to the drawings. Will be schematically described based on a plan view of FIG. 4, a front view of FIG. 4, and a flow chart of FIG.

The semi-automatic coil inserting device 20 is arranged such that a portion of the amateur coil inserted into the core of the armature, which portion extends to the commutator side, is twisted and a predetermined distance is provided between the portion of the amateur coil inserted into the core of the amateur coil and the portion inserted into the commutator. A standby stage 21 that is provided adjacent to a coil expanding device 30 that performs so-called expansion for providing a phase difference, and that makes an amateur semi-finished product in which an amateur coil is expanded by the coil expanding device 30 stand by, and a coil insertion in which coil insertion is performed. And a stage 22.

After fixing the core 42 to the shaft 41 (S
1) After the amateur coil 45 is inserted into the core 42 (S2), this semi-finished product is inserted from above the coil expanding jig 31 provided in the coil expanding device 30 with the commutator side facing downward to expand (S2). S3). After this, the semi-finished amateur product is lifted above the coil deployment jig 31 by the knockout device 32 and turned upside down by the transfer device 33 (S
4) Transfer to the core stage 23 of the standby stage 21.

In this core cradle 23, the amateur 4
After inserting the commutator 43 on the shaft 41 of 0 with the commutator riser portion 44 facing down (S5), the armature 40 is moved to the coil insertion stage by the transfer device 33, and the core is fixed by the core clamp 24. From the above, the commutator 43 is supported by the commutator swing clamp 25, and the commutator 43 is rotated around the shaft to align the position of the slot formed on the peripheral surface of the commutator riser portion 43 with the position of the end portion 46 of the amateur coil 45. . After that, the end portions 46 of the amateur coil 45 are fixed by tightening a large number of metal fittings arranged at appropriate intervals in the circumferential direction from the outside of the end portion 46 of the amateur coil 45 on the peripheral surface of the commutator riser portion 44. The commutatorizer 44 is inserted into the corresponding slot (S
6).

The semi-automatic coil insertion device 20 is provided with a coil pop-out prevention ring insertion device 1 according to an embodiment of the present invention, and the coil pop-out prevention ring insertion device 1 is provided to the commutator riser. After the coil pop-out prevention ring R shown in FIG. 6 is externally fitted, the amateur semi-finished product is taken out from the semi-automatic coil insertion device 20.

FIG. 1 is a side view of a coil pop-out prevention ring insertion device 1 according to an embodiment of the present invention. This coil pop-out prevention ring insertion device 1 is a semi-automatic coil insertion device with a commutator 43 facing upward. A head 2 that internally fits and supports a coil pop-out prevention ring R that is externally fitted to the commutator riser portion 44 of the amateur 40 that is supported by the stocker 3; The head 2 is horizontally movable over the upper side of the stocker 3 and the upper side of the shaft 41 of the armature 40 supported by the semi-automatic coil inserting device 20 (only the coil inserting jig 27 is shown), and is elevated and lowered within a predetermined stroke. A supporting means 4 for supporting the head 2 horizontally, a horizontal driving means 5 for horizontally moving the head 2 through the supporting means 4, and a horizontal driving means 5 for supporting the head 2 through the supporting means 4. And a lift driving means 6 for raising and lowering the de 2.

The supporting means 4 is a semi-automatic coil inserting device 2
The vertical column 7 is provided near the coil insertion stage 22 of 0, and the arm 9 rotatably supported on the upper end of the column 7 via a bearing 8.
Elevating / driving means 6 comprising a vertical hydraulic cylinder at its free end.
Is supported. Then, the head 2 is connected to the piston rod 6a of the elevating and lowering driving means 6 via the elevating and lowering guide 10, and the elevating and lowering driving means 6 is expanded and contracted to move up and down.

A horizontal driving means 5 composed of a horizontal axis hydraulic cylinder is supported on the column 7, and as shown in FIG. 2, the horizontal driving means 5 is connected to the base end portion of the arm 9 to expand and contract. Thus, the head 2 is horizontally moved over the upper side of the stocker 3 and the upper side of the armature 40 located on the coil insertion stage 22.

That is, when the horizontal driving means 5 is shortened, the head 2 is positioned above the stocker 3 arranged diagonally to the right of the coil insertion stage 22, and the elevating driving means 6 is extended at this position. The head 2 descends and the uppermost coil pop-out prevention ring R stacked on the stocker 3 is fitted into the lower surface of the head 2.

After that, the elevation drive means 6 is shortened to raise the head 2, and then the horizontal drive means 5 is extended and moved to the upper side of the coil insertion stage 22.
The stopper 11 is fixed to the arm 9 and the stop 12 supported by the arm 9 is received and restrained by the stopper 11 to accurately position the head 2 on the armature 40.

As shown in FIG. 1, the coil insertion stage 2
After the commutator 43 is inserted into the shaft 41 and the slot position of the commutator riser portion 44 and the end portion 46 of the amateur coil 45 are aligned with each other, the armature 40 carried into the No. 2 coil insertion coil having a large number of holding metal fittings is inserted. With the jig 27 being used to insert the end portion 46 of the amateur coil 45 into the slot of the commutator riser portion 44, the coil pop-out prevention ring R is waiting for lowering.

As shown in FIG. 2, a micro switch 13 is supported on the arm 9, and the adjusting bolt 1 supporting the micro switch 13 on the stopper 11 is provided.
When 4 is driven and turned off, the extension of the horizontal drive means 5 is stopped and the extension of the elevating drive means 6 is started.

When the head 2 descends to the coil insertion stage 22, the coil pop-out prevention ring R supported by the head 2 is externally fitted to the commutatorizer portion 44 of the amateur 40 set on the coil insertion stage 22 ( S7). Thereafter, the striker 16 supported on the counter shaft 6b of the elevating and lowering drive means 6 is driven by another hydraulic cylinder 17 so as to be rapidly lifted, so that the coil pop-out prevention ring R fitted on the commutator riser portion 44 is fitted. Is detached from the head 2 and the elevating and lowering drive means 6 is further shortened, so that the head 2 rises while leaving the coil pop-out prevention ring R in the commutator riser section 44.

Thereafter, the horizontal drive means 5 is used to drive the head 2, for example.
To the upper side of the stacker 3 to move the head 2 and the arm 8
Does not interfere with the removal of the amateur semi-finished product 40,
Further, loosen the pressing metal fitting and remove the coil insertion jig 27 (S
8) After loosening the core clamp 24, the amateur semi-finished product 40 is taken out from the coil insertion stage 22, and the bind tape 4 is attached to both ends of the coil and the center of the coil if necessary.
Wrap 7 (S9). The number of windings of the bind tape 47 is not particularly limited, but in this embodiment, in order to prevent the amateur coil 45 from jumping out of the core 42 during turning, for example, both ends of the coil are wound 7 times and the center of the coil is 6 times. It is wound.

After that, the coil pop-out prevention ring R is removed from the commutatorizer 43 (S10), and the end 46 of the amateur coil 45 axially protruding from the commutatorizer 43 is removed by a lathe (S11). ), T
The armature is completed by welding the end portion 46 of the amateur coil 45 to the commutator riser portion 43 by IG welding (S12).

As described above, after the end portion 46 of the amateur coil 45 is inserted into the slot of the commutatorizer 44 by the semi-automatic coil inserting device 20 (S5), the coil pop-out prevention ring R is externally fitted to the commutatorizer 44. (S
6) After winding the bind tape 47 around both ends of the coil (S9), the coil pop-out prevention ring R is removed (S1).
If the method 0) is adopted, the end 46 of the amateur coil 45 does not fly out of the slot of the commutatorizer 44, and it is not necessary to hammer the coil jumped out of the commutatorizer 44 into the commutatorizer 44. Completely gone. Therefore, it is possible to save the labor and time of hammering the protruding end portion 46 of the amateur coil 45 into the commutatorizer portion 44 with a hammer, and there is no possibility of causing dielectric breakdown by hammering the commutatorizer portion 44 with a hammer.

Further, in the method of the present invention, the coil pop-out prevention ring R may be manually fitted on the commutator riser portion 44 by hand, but by using the coil pop-out prevention ring insertion device 1 as in this embodiment. When automated, the coil pop-out prevention ring R can be reliably fitted onto the fixed contact plate mutator riser portion 44 in a short time, and the method of the present invention can be efficiently carried out.

[0029]

As described above, the method of the present invention is
After inserting the end of the amateur coil into the slot of the commutator riser by tightening the push-in fitting of the semi-automatic coil insertion device, the coil pop-out prevention ring is externally fitted to the commutator riser with the push-in fitting tightened. Then loosen the push-in fitting, then wrap the binding tape around both ends of the amateur coil, remove the coil pop-out prevention ring, and then after turning the surplus end of the amateur coil, turn the amateur coil. Since it is welded to the commutator riser, there is no possibility of the amateur coil popping out of the commutator riser according to the method of the present invention, and the end of the amateur coil can be hammered into the commutator riser with a hammer and the time can be saved. Hit the riser part with a hammer to cause dielectric breakdown. It ruosore be lost entirely.

Further, the device of the present invention has a head for supporting the semi-automatic coil inserting device with the commutator facing upward and externally fitted to the commutator riser portion of the amateur for internally fitting and supporting the coil pop-out prevention ring, and the coil flying device. A stocker for accumulating and stacking delivery rings vertically and a support for supporting the head so that the head can be horizontally moved over the upper side of the stocker and the upper side of an armature supported by a semi-automatic coil insertion device and can be moved up and down within a predetermined stroke. Means, a horizontal drive means for horizontally moving the head through the support means, and an elevating and lowering drive means for elevating and lowering the head through the support means. The commutatorizer part of the amateur supported by the semi-automatic coil insertion device, taking the rings one by one from the top Automatically it can be externally fitted,
Thus, by carrying out the method of the present invention, it is possible to save the time and effort of hammering the ejected amateur coil into the commutatorizer section, and at the same time eliminate the possibility of causing insulation breakdown by hammering the commutatorizer section with a hammer,
Moreover, the working efficiency of the method of the present invention can be improved.

[Brief description of drawings]

FIG. 1 is a side view of the device of the present invention.

FIG. 2 is a plan view of the device of the present invention.

FIG. 3 is a plan view of the semi-automatic coil insertion device.

FIG. 4 is a front view of the semi-automatic coil insertion device.

FIG. 5 is a flow chart of the method of the present invention.

FIG. 6 is a plan view of a coil pop-out prevention ring of the present invention.

FIG. 7 is a side view of an amateur.

[Explanation of symbols]

R Coil pop-out prevention ring 2 heads 3 stocker 4 Supporting means 5 Horizontal drive means 6 lifting drive means 44 End of amateur coil 43 Commutatorizer

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5H604 AA05 AA08 BB01 BB07 BB14                       CC02 CC05 CC13 PB03 PC03                       QA06 QB01 QB03 QB14                 5H613 AA01 AA02 BB04 BB12 GA05                       GA06 KK05 KK17                 5H615 AA01 BB01 BB04 BB14 PP02                       PP15 QQ19 SS10 SS11 SS19

Claims (2)

[Claims] 1. A semi-automatic coil insertion device is inserted into an slot of an commutator riser by tightening a push-fitting metal fitting, and then the coil pop-out prevention ring is attached to the commutator while the push-fitting metal fitting is tightened. After fitting it over the riser, loosen the push-in fitting, then wrap the binding tape around both ends of the amateur coil, remove the coil pop-out prevention ring, and then turn the surplus end of the amateur coil. Then, a method for manufacturing a DC motor is characterized in that the amateur coil is welded to the commutator riser portion. 2. A head for internally fitting and supporting a coil pop-out prevention ring externally fitted to a commutator riser portion of an amateur supported by a semi-automatic coil inserting device with a commutator facing upward, and the coil pop-out ring being vertically moved. And a support means for supporting the head so as to be horizontally movable over the upper side of the stocker and the upper side of the armature supported by the semi-automatic coil inserting device and capable of moving up and down within a predetermined stroke. A coil pop-out prevention ring insertion device comprising: a horizontal drive means for horizontally moving the head via a support means; and an elevation drive means for raising and lowering the head via the support means.