JP6102755B2 - Winding terminal forming apparatus and terminal wire forming method - Google Patents

Description

  The present invention relates to a winding terminal forming apparatus for forming a terminal wire of a winding of a rotating electrical machine and a method for forming the terminal wire.

2. Description of the Related Art Conventionally, a winding terminal forming apparatus that forms terminal wires taken out from windings wound around an armature as a stator or rotor used in a rotating electric machine is known.
In the winding terminal forming apparatus described in Patent Document 1, a cylindrical holding jig is put on the terminal wire taken out from the stator winding, and the holding jig is moved in the circumferential direction of the stator and in the axial direction of the stator. Thus, the terminal wire is formed into a crank shape.

JP 2007-318874 A

However, when the terminal wire is bent by the holding jig, the winding terminal forming device described in Patent Document 1 uses the axial end face of the winding with which the terminal wire contacts as a fulcrum. For this reason, the terminal wire cannot be bent in the direction in which the winding is wound, and the bending direction of the terminal wire is limited.
Moreover, the winding terminal shaping | molding apparatus of patent document 1 is difficult to adjust the height position of the terminal wire after bending molding, when bending a terminal wire with a holding jig. Therefore, the length of the terminal wire must be adjusted in advance before bending.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a winding terminal forming apparatus and a terminal wire forming method capable of bending terminal wires according to various standards. And

The invention according to claim 1 is a winding terminal forming apparatus for forming a terminal wire taken out from a winding of an armature, a work receiver on which the armature is installed, and a core bar positioned in the circumferential direction of the terminal wire; Is rotated in the circumferential direction of the armature, and a clamper for locking the terminal wire is moved in the axial direction.
Thereby, the height of the terminal wire is determined by the movement amount of the clamper, the bending direction of the terminal wire is determined by the rotation direction of the workpiece receiver, and the bending angle of the terminal wire is determined by the rotation amount of the workpiece receiver. Therefore, the winding terminal forming apparatus can cope with various standards for the height, bending direction, or bending angle of the terminal wire. Therefore, the manufacturing cost of the winding terminal forming device and the manufacturing cost of the armature can be reduced.
In the claims and the description of the specification, “upper side” or “lower side” indicates one or the other in the axial direction of the armature, and is not limited to the direction of gravity.

According to a tenth aspect of the present invention, there is provided a method for forming a terminal wire taken out from a winding of an armature, wherein a work receiver on which the armature is installed and a core bar positioned in the circumferential direction of the terminal wire are arranged in the circumferential direction of the armature. And a clamper that engages a terminal line located on the upper side of the cored bar is moved in the axial direction.
Thereby, the terminal wire can be bent according to various standards.

It is a top view of the coil | winding terminal shaping | molding apparatus by 1st Embodiment of this invention. It is sectional drawing of the II-II line of FIG. It is sectional drawing of the III-III line of FIG. It is a side view of the clamper of the coil | winding terminal shaping | molding apparatus by 1st Embodiment. It is an arrow view of the V direction of FIG. (A) is a top view of the metal core of the coil | winding terminal shaping | molding apparatus by 1st Embodiment, (B) is an arrow line view of the B direction of (A). It is explanatory drawing of the shaping | molding method of the terminal wire by 1st Embodiment of this invention. It is explanatory drawing of the shaping | molding method of the terminal wire by 1st Embodiment of this invention. It is explanatory drawing of the shaping | molding method of the terminal wire by 1st Embodiment of this invention. It is process drawing of the shaping | molding method of the terminal wire by 1st Embodiment of this invention. It is sectional drawing of the coil | winding terminal shaping | molding apparatus by 2nd Embodiment of this invention. It is explanatory drawing of the shaping | molding method of the terminal wire by the coil | winding terminal shaping | molding apparatus of a comparative example. It is explanatory drawing of the shaping | molding method of the terminal wire by the coil | winding terminal shaping | molding apparatus of a comparative example. It is sectional drawing of the coil | winding terminal shaping | molding apparatus by 3rd Embodiment of this invention. It is an enlarged view of the XV part of FIG. It is explanatory drawing of the shaping | molding method of the terminal wire by 3rd Embodiment of this invention. FIG. 17 is an arrow view in the XVII direction in FIG. 16.

Hereinafter, a plurality of embodiments according to the present invention will be described with reference to the drawings.
(First embodiment)
The winding terminal shaping | molding apparatus by 1st Embodiment of this invention is shown in FIGS. The winding terminal forming apparatus 1 according to the present embodiment includes four terminal wires 4 positioned on the radially outer side among a plurality of terminal wires taken out from a winding 3 wound around a stator 2 used in a rotating electrical machine. Is formed into a predetermined standard shape. The stator 2 of the present embodiment corresponds to an “armature” described in the claims.

(Configuration of winding terminal forming device)
The winding terminal forming apparatus 1 includes a workpiece receiver 10, a ring holder 20, a core metal 30, a clamper 40, a cam mechanism 50, a moving mechanism unit 60, and the like.
1 and 2, the clamper 40 is omitted, and in FIGS. 4 and 5, the cam mechanism 50 and the moving mechanism unit 60 are omitted.

As shown in FIGS. 1 to 3, the workpiece receiver 10 can be provided with an annular stator 2. In the stator 2, a winding 3 is wound around a throttle provided in the stator core 5, and a plurality of terminal wires 4 taken out from the winding 3 extend to the upper side in the axial direction of the stator 2.
The workpiece receiver 10 has a large diameter portion 11 whose inner diameter is the same as or slightly larger than the outer diameter of the stator core 5, a small diameter portion 12 below the large diameter portion 11 and smaller than the inner diameter of the large diameter portion 11, and a large diameter. A step portion 13 is provided between the portion 11 and the small diameter portion 12. The lower surface of the stator core 5 abuts on the stepped portion 13, and the axial positions of the workpiece receiver 10 and the stator 2 are determined.
Further, as shown in FIG. 1, the workpiece receiver 10 has a convex portion 14 that protrudes radially inward from the inner wall thereof. The convex portion 14 is fitted into the positioning groove 6 provided in the stator core 5, and the position of the workpiece receiver 10 and the stator 2 in the rotational direction is determined.
The workpiece receiver 10 can be moved in the axial direction of the stator 2 by a cylinder (not shown), and can be rotated in the circumferential direction of the stator 2 by a motor (not shown). The stator 2 is fixed to the workpiece receiver 10, can move in the axial direction together with the workpiece receiver 10, and can rotate in the circumferential direction.

The ring holder 20 is provided on the upper side in the axial direction of the stator 2. The ring holder 20 has an annular portion 21, a central portion 22, and a contact portion 23 on the workpiece receiving side of the annular portion 21. The upper surface of the stator core 5 comes into contact with the contact portion 23, and the axial position between the ring holder 20 and the stator 2 is determined. Thereby, the ring holder 20 positions the height of the stator 2.
In the ring holder 20, the upper surface of the flange 24 extending radially outward from the annular portion 21 is in contact with a plurality of first roller followers 26 fixed to the gantry 25. The first roller follower 26 determines the position of the ring holder 20 in the axial direction and guides the rotation of the ring holder 20.

  The center portion 22 of the ring holder 20 connects the annular portion 21 in the radial direction. Two pins 27 extending in the axial direction are fixed to the central portion 22. This pin 27 is inserted into a guide hole 15 provided in the workpiece receiver 10. Thereby, the rotational force of the workpiece receiver 10 is transmitted to the ring holder 20 through the two pins 27, and the ring holder 20 can rotate together with the workpiece receiver 10.

The rod 71 of the wobbling prevention device 70 can be fitted to the fixed column 28 fixed to the ring holder 20. The wobbling prevention device 70 moves the rod 71 in the radially inward direction of the ring holder 20 to fit the rod 71 and the fixed column 28 together. Thereby, the movement of the ring holder 20 in the circumferential direction is restricted.
Further, the wobbling prevention device 70 moves the rod 71 in the radially outward direction of the ring holder 20 to release the fitting between the rod 71 and the fixed column 28.

Corresponding to the positions of the four terminal wires 4 extending from the windings 3 of the stator 2, four core bars 30 are attached to the ring holder 20. The core metal 30 can rotate in the circumferential direction together with the ring holder 20.
As shown in FIG. 6A, the cored bar 30 includes a cored bar body 31, a second roller follower mounting hole 32, first and second positioning grooves 33 and 34, and two cored bar bodies 31 extending from the cored bar body 31. It has a nail 35. The terminal wire 4 can enter between the two claws 35 with a predetermined gap. As shown in FIG. 6 (B), when viewed from the radially inward direction of the ring holder 20, each of the claws 35 has a low inner and outer height and a high central height, that is, a convex circle on the upper side. It is formed in an arc shape.

As shown in FIGS. 1 to 3, the core metal 30 is attached to the ring holder 20 so that the two claws 35 are located on both sides of the terminal wire 4 in the circumferential direction. The core metal 30 is provided between the guide frames 36 fixed to the ring holder 20 and is movable in the radial direction of the ring holder 20.
A second roller follower 37 is attached to the second roller follower attachment hole 32 of the core metal 30.

  The cam mechanism 50 has a groove cam 51 that is recessed from the end surface on the ring holder side toward the counter ring holder side. The groove cam 51 can be engaged with a second roller follower 37 attached to the core metal 30. The extending direction of the groove cam 51 is inclined with respect to the radial direction of the ring holder 20. When the ring holder 20 rotates in the clockwise direction of FIG. 1, the second roller follower 37 is guided by the groove cam 51 and moves in the radially outward direction of the ring holder 20, and the two claws 35 of the metal core 30 are connected to the terminal wire 4. Get away from. At that time, the positioning member 38 is fitted into the first positioning groove 33 of the cored bar 30. The position of the cored bar 30 at this time is shown by a broken line A in FIG.

On the other hand, when the ring holder 20 rotates counterclockwise in FIG. 1, the second roller follower 37 is guided by the groove cam 51 and moves in the radial direction of the ring holder 20, and the two claws 35 of the core metal 30 are Located on both sides of the terminal line 4 in the circumferential direction. At that time, the positioning member 38 is fitted into the second positioning groove 34 of the cored bar 30. The position of the metal core 30 at this time is shown by a solid line B in FIG.
The second roller follower 37 of the present embodiment corresponds to an “engagement portion” described in the claims, and the groove cam 51 corresponds to a “guide portion” described in the claims.

  The moving mechanism 60 can move the cam mechanism 50 in the axial direction of the ring holder 20 by driving the cylinder 61. As shown in FIG. 2, when the moving mechanism 60 extends the cylinder 61 and raises the cam mechanism 50, the groove cam 51 cannot be engaged with the second roller follower 37. When the moving mechanism 60 contracts the cylinder 61 and lowers the cam mechanism 50, the groove cam 51 can be engaged with the second roller follower 37.

As shown in FIGS. 4 and 5, the clamper 40 includes first and second clamping jigs 41 and 42, an axial direction moving means 43 and a radial direction moving means 44.
The first clamp jig 41 and the second clamp jig 42 are attached to the plate 46 and can be moved toward and away from each other by driving the cylinder 45. The first and second clamp jigs 41 and 42 are close to each other, and can lock the terminal wire 4 positioned above the core metal 30. At this time, a predetermined gap is provided between the first clamp jig 41 and the terminal line 4 and between the second clamp jig 42 and the terminal line 4 so that the terminal line 4 can slide. The terminal line 4 is prevented from being damaged. The first and second clamping jigs 41 and 42 are used for guiding the terminal wire 4 in the radial direction when bending the terminal wire 4 and adjusting the height position in the axial direction.

The axial direction moving means 43 includes a servo motor 431, a pulley 432, a belt 433, a ball screw 434, and the like.
The rotational force of the servo motor 431 of the axial movement means 43 is transmitted to the ball screw 434 via the pulley 432 and the belt 433. When the ball screw 434 rotates, the first clamping jig 41 and the second clamping jig 42 together with the plate 46 move upward or downward in the axial direction of the stator 2.
The radial moving means 44 also includes a servo motor 441, a pulley 442, a belt 443, a ball screw 444, and the like. Like the axial moving means 43, the first clamp jig 41 and the second clamp jig 42 together with the plate 46. Is moved outward or inward in the radial direction of the stator 2.

(Terminal wire forming method)
Next, a terminal wire forming method using the winding terminal forming apparatus 1 described above will be described with reference to FIG.
First, the stator 2 is installed in the workpiece receiver 10 in S1. At that time, the lower surface of the stator core 5 is brought into contact with the stepped portion 13 of the workpiece receiver 10, and the convex portion 14 of the workpiece receiver 10 is fitted into the positioning groove 6 provided in the stator core 5.
Next, in S <b> 2, the workpiece receiver 10 is raised to bring the upper surface of the stator core 5 into contact with the contact portion 23 of the ring holder 20. Subsequently, the upper surface of the flange 24 of the ring holder 20 and the first roller follower 26 are reliably brought into contact with each other. At that time, the two pins 27 fixed to the center portion 22 of the ring holder 20 are inserted into the guide holes 15 of the workpiece receiver 10. As a result, the ring holder 20 and the workpiece receiver 10 are positioned in the circumferential direction, and a rotational force can be transmitted from the workpiece receiver 10 to the ring holder 20.
At this time, the four metal cores 30 are located on the outer diameter side than the stator 2.

In S3, the moving mechanism unit 60 is driven and the cam mechanism 50 is lowered. Thereby, the groove cam 51 of the cam mechanism 50 is positioned in the circumferential direction of the second roller follower 37.
In S4, the workpiece receiver 10 is rotated once in the counterclockwise direction in FIG. At this time, the ring holder 20 and the four cored bars 30 together with the work receiver 10 also rotate counterclockwise. At this time, the core 30 that has reached the position of the groove cam 51 moves in the radial direction of the ring holder 20 by the second roller follower 37 being guided by the groove cam 51. Subsequently, the four core bars 30 move inward in the order. Accordingly, the two claws 35 respectively included in the four core bars 30 are positioned with a predetermined gap on both sides of the corresponding terminal wire 4 in the circumferential direction.
Thereafter, in S5, the moving mechanism unit 60 is driven to raise the cam mechanism 50. Thereby, the groove cam 51 of the cam mechanism 50 cannot be engaged with the second roller follower 37.

In S <b> 6, the workpiece receiver 10 is rotated, and the terminal wire 4 to be processed is moved to the movable region of the first and second clamp jigs 41 and 42 of the clamper 40.
Then, the axial direction moving means 43 is driven, and the first and second clamp jigs 41 and 42 are opened and positioned on both sides of the terminal line 4. Next, the cylinder 45 of the 1st, 2nd clamp jigs 41 and 42 is driven, and the terminal wire 4 located above the metal core 30 is latched as shown in FIG. At this time, a predetermined gap is provided between the first and second clamping jigs 41 and 42 and the terminal wire 4 so that the terminal wire 4 can slide.

Next, in S7, the terminal wire 4 is bent.
In S7, the work receiver 10 is rotated as indicated by an arrow A in FIG. 8, and the first and second clamping jigs 41 and 42 are driven as indicated by arrows B and C, whereby the terminal wire 4 is set to a predetermined standard. It is molded in the bending direction, bending angle, and height position corresponding to. Here, the rotation direction of the workpiece receiver 10 determines the bending direction of the terminal wire 4, and the rotation amount of the workpiece receiver 10 determines the bending angle of the terminal wire 4. The amount of movement of the clamper 40 in the axial direction determines the height of the terminal line 4, and the amount of movement of the clamper 40 in the radial direction determines the position of the terminal line 4 in the radial direction.

Subsequently, the first and second clamp jigs 41 and 42 are opened, and the axial direction moving means 43 is driven to move the first and second clamp jigs 41 and 42 above the terminal line 4.
The winding terminal forming apparatus 1 repeats the steps S6 and S7 four times, and forms the four terminal wires 4 into standard shapes defined for each. At this time, as shown by the solid line D and the alternate long and short dash line E in FIG. 9, the terminal wire 4 can be bent in a bending direction corresponding to a predetermined standard by changing the rotation direction of the workpiece receiver 10.

After the molding of the four terminal wires 4 is finished, the moving mechanism unit 60 is driven and the cam mechanism 50 is lowered in S8. Thereby, the groove cam 51 of the cam mechanism 50 is positioned in the circumferential direction of the second roller follower 37.
In S9, the workpiece receiver 10 is rotated once in the clockwise direction in FIG. As a result, the ring holder 20 and the four metal cores 30 also rotate clockwise together with the workpiece receiver 10, and the four metal cores 30 are guided by the second roller follower 37 to the groove cam 51. It moves to the outside of the diameter of the holder 20. Accordingly, the two claws 35 respectively included in the four core bars 30 are separated from the corresponding terminal lines 4. Thereafter, the moving mechanism unit 60 is driven to raise the cam mechanism 50.
In S10, the workpiece receiver 10 is rotated to return the stator 2 to the initial position. Thereafter, the workpiece receiver 10 is lowered, and the stator 2 is moved to another device in order to perform the following process.

(Operational effects of the first embodiment)
The first embodiment has the following operational effects.
(1) In the first embodiment, the workpiece receiver 10 and the cored bar 30 rotate in the circumferential direction of the stator 2, and the clamper 40 that locks the terminal wire 4 moves in the axial direction and the radial direction. Thereby, the coil | winding terminal shaping | molding apparatus 1 becomes possible [respond | corresponding to the various specification with respect to the height of the terminal wire 4, a bending direction, or a bending angle. Therefore, the manufacturing cost of the winding terminal forming device 1 and the manufacturing cost of the stator 2 can be reduced.

(2) The clamper 40 is movable in the axial direction and the radial direction of the stator 2.
Thereby, the height of the terminal wire 4 is determined by the movement amount of the clamper 40 in the axial direction, and the radial position of the terminal wire 4 is determined by the movement amount in the radial direction.
(3) In the cored bar 30, two claws 35 are provided on both sides in the circumferential direction of the terminal wire 4 with a predetermined gap.
Thereby, the bending of the terminal wire 4 can be formed regardless of whether the workpiece receiver 10 rotates in one of the circumferential directions of the stator 2 or the other. Moreover, it is possible to prevent the terminal line 4 from being damaged by making a gap between the two claws 35 and the terminal line 4.

(4) The cored bar 30 is provided in the ring holder 20 so as to be movable in the radial direction of the stator 2.
Thereby, after bending the terminal wire 4, the core metal 30 can be moved in the radial direction of the stator 2, and the stator 2 can be detached from the winding terminal forming device 1.
(5) The winding terminal forming apparatus 1 includes a cam mechanism 50 having a groove cam 51.
As a result, the winding terminal forming apparatus 1 can move the cored bar 30 in the radial direction of the stator 2 using the rotational force of the cam mechanism 50 and the ring holder 20.

(6) The winding terminal forming apparatus 1 includes a moving mechanism 60 that moves the cam mechanism 50 in the axial direction.
Thereby, the freedom degree of the attachment position of the metal core 30 on the ring holder 20 spreads by moving the cam mechanism 50 upward from the ring holder 20 at the time of bending of the terminal wire 4.
(7) The plurality of core bars 30 are provided corresponding to the plurality of terminal wires 4 taken out from the winding 3.
Thereby, if the ring holder 20 is rotated once in the circumferential direction of the stator 2, all the core bars 30 can be positioned in the circumferential direction of the terminal wire 4. If a plurality of terminal wires 4 are formed using only one cored bar, the number of times the moving mechanism unit 60 moves the cam mechanism 50 up and down increases. Therefore, the winding terminal shaping | molding apparatus 1 can shorten the time which shape | molds the terminal wire 4 by providing the some metal core 30 according to the number of the terminal wires to process.

(8) In the terminal wire forming method according to the first embodiment, the workpiece receiver 10 and the cored bar 30 are rotated in the circumferential direction, and the clamper 40 that engages the terminal wire 4 is moved in the axial direction and the radial direction.
Thereby, various standards for the height, bending direction, or bending angle of the terminal wire 4 can be accommodated.
(9) The terminal wire is formed by positioning the groove cam 51 of the cam mechanism 50 by the moving mechanism 60 in the circumferential direction of the second roller follower 37 of the core metal 30, and then rotating the workpiece receiver 10. Is moved in the radial direction of the stator 2.
Thereby, the winding terminal forming apparatus 1 can move the core metal 30 in the radial direction of the stator 2 using the rotational force of the ring holder 20.

(10) The terminal wire is formed by rotating the work receiver 10 once in the counterclockwise direction of the stator 2 and positioning the plurality of core bars 30 on both sides of the corresponding plurality of terminal wires 4.
Thereby, since it becomes possible to position the some metal core 30 inside a diameter by one process, the time which shape | molds the terminal wire 4 can be shortened.

(Comparative example)
Here, FIG. 12 and FIG. 13 show a method of forming a terminal wire by the winding terminal forming apparatus of the comparative example.
As shown in FIG. 12, the molding method of the comparative example includes (1) a pre-molding step, (2) a crank bending step, and (3) a finishing step.
(1) In the pre-molding step, as shown in FIG. 12A, the four terminal wires 4 are bent outward in the radial direction, and the radial position of the terminal wire 4 with respect to the stator 2 is determined.
(2) Next, in the crank bending step, as shown in FIG. 12B, the four terminal wires 4 are bent into a crank shape. At this time, as shown in FIG. 13, the winding terminal forming apparatus of the comparative example arranges the die 80, the core metal 81, and the bending punch 82 with respect to the terminal wire 4 to be bent, as indicated by an arrow F. Further, the bending punch 82 is brought close to the die 80 by driving the cylinder. As a result, the terminal wire 4 is pressed against the die 80 by the bending punch 82 and formed into a predetermined standard shape.
(3) Finally, in the finishing step, as shown in FIG.

  The winding terminal forming apparatus of the comparative example includes a die 80, a cored bar 81, and a bending punch 82 corresponding to the standard shapes of the four terminal wires 4. Therefore, four sets of the die 80, the cored bar 81, and the bending punch 82 are required for the four terminal wires 4. When the standard shape of the terminal wire 4 is changed, the die 80, the cored bar 81, and the bending punch 82 must be attached and detached, and the attachment position and the like must be changed. Therefore, it is difficult for the winding terminal forming apparatus of the comparative example to reduce the manufacturing cost of the winding terminal forming apparatus and the manufacturing cost of the armature as compared with the winding terminal forming apparatus of the first embodiment described above. It is.

(Second Embodiment)
A winding terminal forming apparatus according to a second embodiment of the present invention is shown in FIG. In the second embodiment, components substantially the same as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
In the second embodiment, the workpiece receiver 10 has a first step portion 131 and a second step portion 132. In FIG. 11, the stator 2 is installed in the first step portion 131.
The workpiece receiver 10 can be provided with a stator having a stator core having a smaller diameter than the stator 2 shown in FIG.

  In addition, the terminal wire taken out from the winding of the stator installed in the second stepped portion 132 is located on the radially inner side than the terminal wire 4 taken out from the winding 3 of the stator 2 installed in the first stepped portion 131. To do. Therefore, in 2nd Embodiment, since the nail | claw 351 of the metal core 30 respond | corresponds to the terminal wire 4 of a some stator, it is formed longer than the nail | claw 35 of the metal core 30 of 1st Embodiment mentioned above.

  In 2nd Embodiment, the coil | winding terminal shaping | molding apparatus can respond | correspond to the standard shape of the various terminal wire with respect to multiple types of stators. Therefore, the manufacturing cost of the winding terminal forming device and the manufacturing cost of the stator can be reduced.

(Third embodiment)
A winding terminal forming apparatus according to a third embodiment of the present invention will be described.
In the third embodiment, as shown in FIG. 14, the ring holder 20 includes an upper ring holder 201 provided on the upper side of the core metal 30, a lower ring holder 202 provided on the lower side of the core metal 30, and its upper ring. A spring 29 provided between the holder 201 and the lower ring holder 202 is provided. The spring 29 of the third embodiment corresponds to an example of an “elastic member” recited in the claims.

As shown in FIG. 15, the spring 29 of 3rd Embodiment is comprised from the some leaf | plate spring. The plurality of leaf springs are inserted outside the cylindrical member 204 extending from the lower plate 203 fixed to the lower ring holder 202, and urge the cored bar 30 toward the upper ring holder. As the spring 29, a compression coil spring can be used instead of the leaf spring.
The movement of the ring holder 20 in the radial direction and the circumferential direction of the upper plate 205 provided between the spring 29 and the core metal 30 is restricted by a restriction member 206 fixed to the lower ring holder 202. The core metal 30 can reciprocate between the upper plate 205 and the upper ring holder 201 in the radial direction of the ring holder 20. In 3rd Embodiment, the height h of the nail | claw 35 of the metal core 30 is 1.5 mm, for example.

Next, the formation method of the terminal wire 4 using the coil | winding terminal shaping | molding apparatus 1 of 3rd Embodiment is demonstrated.
In the third embodiment, similarly to the first embodiment and the second embodiment, the moving mechanism unit 60 is driven to guide the second roller follower 37 of the core metal 30 to the groove cam 51 of the cam mechanism 50, and the core metal 30. Is moved in the radial direction of the ring holder 20. At this time, the cored bar 30 moves from a position where the positioning member 38 is fitted in the first positioning groove 33 to a position where the positioning member 38 is fitted in the second positioning groove 34. In this state, the two claws 35 of the cored bar 30 are located on both sides in the circumferential direction of the terminal wire 4.

  Subsequently, as shown in FIGS. 16 and 17, the terminal wire 4 is locked by the first and second clamping jigs 41 and 42 of the clamper 40, and the terminal wire 4 is bent. In this bending process, the work receiver 10 is rotated as indicated by an arrow A in FIG. 17 and the first and second clamping jigs 41 and 42 are moved as indicated by arrows B and C, whereby the terminal wire 4 is moved. Molding in a bending direction, bending angle, and height position corresponding to a predetermined standard.

Here, the elastic force of the spring 29 is set so that the spring 29 contracts toward the lower ring holder by the load with which the clamper 40 presses the core metal 30. Further, the elastic force of the spring 29 is set to such an extent that the core metal 30 can be supported so that the core metal 30 does not press the winding 3 due to the load that the clamper 40 presses the core metal 30.
Therefore, the cored bar 30 moves from the position indicated by the broken line 35 ′ in FIGS. 16 and 17 to the position indicated by the solid line 35. That is, the load by which the clamper 40 presses the core metal 30 is absorbed by the spring 29, and the core metal 30 is inclined so that the claw 35 bows downward.
In this state, there is a predetermined gap between the lower end surface of the core metal 30 and the regulating member 206. Further, a predetermined gap is provided between or in contact with the claw 35 of the core metal 30 and the winding 3. However, even when the claw 35 of the core metal 30 and the winding 3 are in contact with each other, the claw 35 of the core metal 30 does not press the winding 3, so that the coating of the winding 3 is prevented from being damaged.

In 3rd Embodiment, there exists the following effect.
(1) In the third embodiment, the spring 29 provided between the core metal 30 and the lower ring holder 202 has an elastic force that can be reduced toward the lower ring holder by the load that the clamper 40 presses the core metal 30. Is set.
Thereby, since the spring 29 absorbs the load that the clamper 40 presses the cored bar 30, the bent or damaged cored bar 30 is prevented. Also, with this configuration, the thickness of the claw 35 of the core metal 30 can be reduced, and the degree of freedom of the shape of the terminal wire 4 can be increased.

  (2) In the third embodiment, the spring 29 is set to an elastic force capable of supporting the core metal 30 to such an extent that the core metal 30 does not damage the coating of the winding 3 due to the load that the clamper 40 presses the core metal 30. ing. Thereby, even when the core metal 30 and the winding 3 are not in contact, or when the core metal 30 and the winding 3 are in contact, it is possible to prevent the coating of the winding 3 from being damaged.

(Other embodiments)
In the above-described embodiment, the winding terminal forming apparatus that forms the terminal wire of the winding wound around the stator as the armature has been described. On the other hand, in other embodiment, the winding terminal shaping | molding apparatus may shape | mold the terminal wire of the winding wound by the rotor as an armature.
In the above-described embodiment, four terminal wires located outside the diameter are formed among the plurality of terminal wires taken out from the stator winding. On the other hand, in other embodiments, the winding terminal forming apparatus may form only a few of the four, or may form terminal wires other than the four. May be.

In the above-described embodiment, the work receiver is rotated and the axial direction moving means and the radial direction moving means are driven when the terminal wire is bent. On the other hand, in another embodiment, when the radial position of the terminal wire after bending is coincident with the circumferential direction of the position where the terminal wire is taken out from the winding, the radial moving means is not driven. Only the axial movement means may be driven together with the rotation of the workpiece receiver.
The present invention is not limited to the above embodiment, and can be implemented in various forms without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 ... Winding terminal forming apparatus 2 ... Stator (armature)
3 ... Winding 4 ... Terminal wire 10 ... Work receiver 30 ... Core metal 40 ... Clamper

Claims (13)

An annular armature (2) around which the winding (3) is wound, and a work receiver (10) capable of rotating the armature in the circumferential direction;
A ring holder (20) provided on the upper side in the axial direction of the armature and fixed to the workpiece receiver;
A core metal (30) attached to the ring holder with a predetermined gap in the circumferential direction of the terminal wire (4) taken out from the winding, and movable in the circumferential direction of the armature together with the ring holder;
A clamper (40) for locking the terminal wire located above the core bar, moving in the axial direction of the armature along with the rotation of the workpiece receiver, and forming the terminal wire. Winding terminal forming apparatus (1).   The winding terminal forming apparatus according to claim 1, wherein the clamper is movable in an axial direction and a radial direction of the armature.   The core metal has two claws (35, 351) extending from a core metal body (31), and is positioned with a predetermined gap on both sides in the circumferential direction of the terminal wire. The winding terminal molding apparatus as described in 2.   The said core metal is provided in the said ring holder so that a movement to the radial direction of the said armature is provided, The winding terminal shaping | molding apparatus as described in any one of Claims 1-3 characterized by the above-mentioned. The ring holder is
A lower ring holder (202) provided on the lower side of the cored bar,
An upper ring holder (201) which is provided on the upper side of the cored bar and restricts the upward movement of the cored bar,
An elastic member (between the lower ring holder and the core metal) and having an elastic force that can be reduced toward the lower ring holder by a load that presses the core metal when the clamper forms the terminal wire ( 29) and the winding terminal forming device according to any one of claims 1 to 4.   The elastic member has an elastic force capable of supporting the core metal to such an extent that the core metal does not damage the coating of the winding by a load pressing the core metal when the clamper forms the terminal wire. The winding terminal forming apparatus according to claim 5.   A cam mechanism (50) having a guide portion (51) engageable with an engagement portion (37) provided on the core metal, and moving the core metal in a radial direction of the armature by rotation of the ring holder. The winding terminal shaping | molding apparatus as described in any one of Claims 1-6 characterized by the above-mentioned.   The winding terminal forming device according to claim 7, further comprising a moving mechanism (60) for moving the cam mechanism in an axial direction of the armature.   The winding core forming apparatus according to any one of claims 1 to 8, wherein a plurality of the core bars are provided corresponding to the plurality of terminal wires taken out from the winding. In a method of forming a terminal wire using a winding terminal forming device,
A step (S1) of installing an annular armature around which the winding is wound on a workpiece receiver;
A step (S2) of fixing the ring holder to which the metal core is attached and the workpiece receiver;
A step of positioning the cored bar with a predetermined gap in the circumferential direction of the terminal wire taken out from the winding (S4);
A step (S6) of locking the terminal line located above the cored bar with a clamper;
The step of forming the terminal wire by rotating the armature, the workpiece receiver, the ring holder, and the cored bar in the circumferential direction of the armature, moving the clamper in the axial direction of the armature (S7) A method for forming a terminal wire, comprising: A step (S3) of moving the cam mechanism of the moving mechanism portion to the ring holder side and positioning the guide portion of the cam mechanism in the circumferential direction of the engaging portion of the core metal;
A step (S4) of rotating the workpiece receiver and the ring holder and moving the engaging portion of the core metal in the radial direction of the armature along the guide portion. 10. A method for forming a terminal wire according to 10.   The work receiver and the ring holder are rotated once in one circumferential direction of the armature, and a plurality of the core bars are positioned with a predetermined gap in the circumferential direction of the corresponding terminal wires (S4) And a terminal wire forming method according to claim 10 or 11.   A step (S9) of rotating the workpiece receiver and the ring holder once in the other circumferential direction of the armature and separating the plurality of cored bars from the circumferential direction of the corresponding plurality of terminal wires. The method for forming a terminal wire according to any one of claims 10 to 12.

Images