JP2009077548A - Rotor manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotor manufacturing device that efficiently removes a resin leaked out from a rotor. <P>SOLUTION: The rotor manufacturing device 20 removes a resin leaked out from a storage part to one end face of a rotor 10. The rotor manufacturing device 20 is provided with a base 31, on which the rotor 10 is placed on the basis of a rotary shaft, a motor 33 for rotationally driving the base 31, a housing 41, a cutting tool 42 provided in the housing 41 and located on the upper end face of the rotor 10, each first roller 43 rotatably provided in the housing 41 and located on the upper end face of the rotor 10, and each first biasing part 59 that biases the housing 41 toward the upper end face of the rotor 10. The housing 41 is biased toward the upper end face of the rotor 10 by each first biasing part 59 so as to bring each first roller 43 into contact with the upper end face of the rotor 10. The rotor 10 is rotated by the motor 33 so as to cut the leaked-out resin off with the cutting tool 42. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rotor manufacturing apparatus. In detail, it is related with the manufacturing apparatus of the rotor of the motor which drives a hybrid vehicle.

  Conventionally, a motor is used in a hybrid vehicle. Such a motor includes, for example, a cylindrical motor case, and a rotor that is rotatably held in the motor case.

  The rotor includes a substantially cylindrical yoke formed by laminating thin steel plates and incorporating a permanent magnet, and a rod-shaped shaft passing through the central axis of the yoke. The motor case is provided with a stator whose polarity can be switched. According to this motor, the rotor is rotated using the repulsive force generated by the magnetic force between the permanent magnet built in the yoke and the stator.

In the above rotor, the following method is used to prevent the displacement of the permanent magnet (see Patent Document 1). That is, a plurality of storage portions extending along the shaft are provided in the yoke, and permanent magnets are inserted into the storage portions. An injection hole is provided on one end of the yoke, and the permanent magnet is fixed by injecting resin into the gap between the storage portion and the permanent magnet through the injection hole.
In this method, in order to more firmly fix the permanent magnet, for example, a groove portion extending along the rotation axis direction is formed in the storage portion, and a resin is injection-molded in the groove portion.
JP-A-5-83892

  However, in this proposed method, the gap for injecting resin between the storage portion and the permanent magnet is narrowed, and the amount of resin injected into the storage portion is often very small. For this reason, it is difficult to strictly control the injection amount, and the resin may leak from the injection hole to the outer surface of the yoke, and an operation of removing the leaked resin has been performed in a subsequent process. Specifically, immediately after the resin is injected and before the resin is cured, the leaked resin is wiped with a soft cloth. For this reason, it is necessary to change the waste at a high frequency, which is troublesome.

  An object of this invention is to provide the rotor manufacturing apparatus which can remove efficiently the resin which leaked from the rotor.

  A rotor manufacturing apparatus (for example, a rotor manufacturing apparatus 20 described later) according to the present invention includes a substantially cylindrical yoke (for example, a yoke 11 described later) provided with a storage section (for example, a storage section 16 described later), and the yoke. In a rotor (for example, a rotor 10 described later) having a magnet (for example, a permanent magnet 13 described later) that is stored in the storage unit and fixed with resin, the resin leaked from the storage unit to one end surface side of the rotor. And a rotating mechanism (for example, a motor to be described later) that rotates the base (for example, a base 31 to be described later) and a base on which the rotor is placed with reference to the rotation axis. 33), a housing (for example, a housing 41 described later), a cutting tool (for example, a cutting tool 42 described later) provided on the one end surface of the rotor provided in the housing, and rotatable to the housing. A first roller (e.g., a first roller 43 described later) located on one end surface of the rotor, and a first urging means (e.g., urging the housing toward one end surface of the rotor). A first urging portion 59, which will be described later, and the first urging means urges the housing toward one end surface of the rotor so that the first roller contacts the one end surface of the rotor. In addition, the rotor is rotated by the rotating mechanism, and the leaked resin is cut out by the blade.

According to this invention, the cutting tool is disposed on one end surface of the rotor, the rotor is rotated by the rotating mechanism, and the leaked resin is cut out by the cutting tool. Therefore, since the resin leaked to the one end surface side of the rotor can be removed over the entire surface only by driving the rotation mechanism, the leaked resin can be efficiently removed.
Further, since the housing is urged toward the one end surface of the rotor by the first urging means and the first roller is brought into contact with the one end surface of the rotor, the distance between the one end surface of the rotor and the cutting tool is kept constant. In addition, the leaked resin can be accurately removed without the cutting tool coming into contact with the rotor.

  In this case, the housing includes a blade advancing / retreating mechanism (for example, an advancing / retreating mechanism 45B described later) for advancing / retreating the blade in the radial direction of the rotor, and after the first roller is brought into contact with one end surface of the rotor, It is preferable that the blade is advanced toward the rotor by the blade advance / retreat mechanism.

  According to this invention, since the position of the blade is adjusted after the first roller is brought into contact with one end surface of the rotor, the blade can be prevented from coming into contact with the rotor.

  In this case, the rotor further includes at least three second rollers (for example, a second roller 44 described later) that are rotatably provided on the housing and abut against the outer peripheral surface of the rotor, and the rotor outer peripheral surface of the second rollers. The intervals along the circumferential direction are preferably unequal.

According to this invention, since the second roller that contacts the outer peripheral surface of the rotor is provided, the position of the blade in the radial direction of the rotor can be kept constant.
Here, concave portions may be formed on the outer peripheral surface of the rotor at predetermined intervals along the circumferential direction. However, even if one second roller fits into the recess with respect to such a rotor, the remaining at least two second rollers abut against the smooth arc-shaped portion of the outer peripheral surface of the rotor. It is possible to prevent the displacement in the radial direction from occurring.

  In this case, it is preferable to further include an exclusion mechanism (for example, a vacuum mechanism 46 described later) that is connected to the vicinity of the blade of the housing and excludes the resin cut by the blade from one end surface of the rotor.

  According to this invention, since the resin removed by the cutting tool is excluded by the exclusion mechanism, it is possible to prevent the removed resin from remaining on the rotor.

  In this case, the number of the first rollers is at least three, and those adjacent to each other among the first rollers are provided apart in the circumferential direction and the radial direction of the rotor, and the first urging means Preferably, the housing is biased toward one end surface of the rotor, and the first roller is brought into contact with one end surface of the rotor.

  According to this invention, even if the one end surface of the rotor is uneven, at least three first rollers are brought into contact with the one end surface by the first biasing means. Therefore, since the posture of the cutting tool with respect to the one end surface of the rotor can be kept constant, the occurrence of removal spots can be prevented and the leaked resin can be reliably removed.

  According to the present invention, the cutting tool is disposed on one end surface of the rotor, the rotor is rotated by the rotating mechanism, and the leaked resin is cut out by the cutting tool. Therefore, since the resin leaked to the one end surface side of the rotor can be removed over the entire surface only by driving the rotation mechanism, the leaked resin can be efficiently removed. Further, since the housing is urged toward the one end surface of the rotor by the first urging means and the first roller is brought into contact with the one end surface of the rotor, the distance between the one end surface of the rotor and the cutting tool is kept constant. In addition, the leaked resin can be accurately removed without the cutting tool coming into contact with the rotor.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a rotor 10 manufactured by a rotor manufacturing apparatus 20 according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view and a side view of the rotor 10.
The rotor 10 is housed in a cylindrical motor case (not shown) and is rotatably held inside the motor case. This motor case is provided with a stator whose polarity can be switched.

  The rotor 10 is attached to a permanent magnet 13, a substantially cylindrical yoke 11 in which the permanent magnet 13 is built, a rod-shaped shaft 12 provided along the central axis of the yoke 11, and both end surfaces of the yoke 11. The top lid 14 and the bottom lid 15 are provided.

  According to this motor, the rotor 10 can be rotated using the repulsive force generated by the magnetic force between the permanent magnet 13 built in the yoke 11 and the stator.

The yoke 11 is formed by laminating a plurality of electromagnetic steel plates 111.
The yoke 11 is provided with a storage portion 16 extending along the central axis, and the permanent magnet 13 is stored in the storage portion 16 and fixed with resin.
A recess 112 is formed between the storage portions 16 on the outer peripheral surface of the yoke 11. Thereby, the recessed part 112 will be formed in the outer peripheral surface of the yoke 11 at predetermined intervals along the circumferential direction.

The upper lid 14 and the bottom lid 15 close the upper and lower ends of the storage portion 16. The upper lid 14 is formed with an injection hole 141 communicating with the storage portion 16.
A collar portion 17 for holding the upper lid 14 is attached to the upper end of the shaft 12.

  In the above rotor 10, an injection nozzle (not shown) is connected to the injection hole 141 of the upper lid 14, and a thermosetting resin is injected into the injection hole 141, thereby filling the gap between the permanent magnet 13 and the storage portion 16. By doing so, the permanent magnet 13 is fixed in the storage part 16. Therefore, when the injection nozzle is retracted from the upper lid 14 after injecting the resin, the resin 142 leaks from the injection hole 141 to the upper end surface side of the rotor 10.

3 and 4 are a plan view and a side view of the rotor manufacturing apparatus 20.
The rotor manufacturing apparatus 20 cuts out the resin 142 leaked from the injection hole 141 of the rotor 10. The rotor manufacturing apparatus 20 includes a base 21, a rotor rotating unit 30 provided on the base 21 for rotating the rotor 10, a head unit 40 provided with a cutting tool 42, and the head unit 40 as an upper end surface of the rotor 10. And a head portion support mechanism 50 disposed on the head.

The rotor rotating unit 30 includes a base 31 on which the rotor 10 is placed, a base support 32 provided on the base 21 to rotatably support the base 31, and a base 31 provided on the base 21. And a motor 33 as a rotation mechanism that rotationally drives the motor.
The rotor 10 is placed on the base 31 with the rotation axis as a reference. Specifically, it is placed on the base 31 so that the center axis of the rotor 10 and the center of rotation of the base 31 coincide.
According to the rotor rotating unit 30, the rotor 10 is rotated about the central axis of the rotor 10 by driving the motor 33.

  The head portion support mechanism 50 includes a first moving mechanism 50A that moves the head portion 40 up and down along the central axis direction of the rotor 10, and the first moving mechanism 50A that is provided on the base 21 in the radial direction of the rotor 10. And a second moving mechanism 50B that moves horizontally along.

  The second moving mechanism 50 </ b> B includes an arm portion 51 provided on the base 21, a first slide rail 52 provided on the arm portion 51 and extending horizontally toward the center of the rotor 10, and the first slide rail 52. A slide portion 53 slidable along the second slide rail 53, a second slide rail 54 extending horizontally from the slide portion 53 toward the center of the rotor 10, and slidably supporting the first moving mechanism 50 </ b> A, and the slide portion 53. A second urging portion 55 that urges the first moving mechanism 50A in the forward direction.

  According to the second moving mechanism 50 </ b> B, the radial position of the rotor 10 of the head unit 40 can be adjusted by sliding the first moving mechanism 50 </ b> A along the first slide rail 52.

  The first moving mechanism 50A includes a base portion 56 that is slidably supported by the first slide rail 52 of the second moving mechanism 50B, and a head portion support portion 57 that is movable up and down with respect to the base portion 56 by a cylinder mechanism (not shown). A slide rail 58 that extends downward from the head support portion 57 along the axial direction of the rotor 10 and supports the head portion 40 so that the head portion 40 can be slid up and down; And a first urging unit 59 as first urging means for energizing.

  According to the first moving mechanism 50A, the position of the head portion 40 in the central axis direction of the rotor 10 can be adjusted by driving a cylinder mechanism (not shown).

5 and 6 are a plan view and a side view of the head unit 40. FIG.
The head unit 40 includes a housing 41 slidably supported by the first moving mechanism 50A, a cutting tool 42, two first rollers 43 and three second rollers 44 that are rotatably provided on the housing 41, and a housing. A cutting tool adjusting mechanism 45 that is provided at 41 to change the position and posture of the cutting tool 42 with respect to the rotor 10, and a vacuum mechanism 46 that is connected to the housing 41 and serves as an exclusion mechanism.

  The housing 41 includes a flat arc-shaped lid portion 411 that covers a part of the upper surface of the rotor 10, an outer wall portion 412 that is provided on the lid portion 411 and extends along the outer peripheral surface of the rotor 10, and a lid portion 411. And an inner wall portion 413 provided on the inner peripheral side of the rotor 10.

  A blade 421 is formed at the tip of the blade 42, and the blade 421 extends while being inclined with respect to the length direction of the blade 42. The cutting tool 42 is located above the upper end surface of the rotor 10.

  The two first rollers 43 are provided on the outer wall portion 412 of the housing 41 and are located above the upper end surface of the rotor 10. The first rollers 43 are urged toward the upper end surface of the rotor 10 by the first urging portion 59 of the first moving mechanism 50A described above. The distance between the blades 421 of 42 and the upper end surface of the rotor 10 is kept constant.

The three second rollers 44 are provided at the lower end of the outer wall portion 412 of the housing 41 and are located on the side of the rotor 10. The intervals along the circumferential direction of the outer peripheral surface of the rotor 10 between the second rollers 44 are not uniform.
These first rollers 43 are urged toward the side surface of the rotor 10 by the second urging portion 55 of the second moving mechanism 50B described above. Thereby, the 2nd roller 44 contact | abuts to the outer peripheral surface of the rotor 10, and hold | maintains the position of the radial direction of the rotor 10 of the blade 421 of the blade tool 42 constant.

  The first roller 43 and the second roller 44 are in contact with the upper end surface and the outer peripheral surface of the rotor 10, so that the blade 421 of the cutting tool 42 is prevented from falling with respect to the rotor 10.

The blade adjustment mechanism 45 includes a posture adjustment mechanism 45A that adjusts the angle of the blade 42 with respect to the upper end surface of the rotor 10, and an advance / retreat mechanism 45B as a blade tool advance / retreat mechanism that moves the posture adjustment mechanism 45A forward / backward with respect to the rotor 10. .
The advance / retreat mechanism 45 </ b> B includes a slide rail 451 extending from the outer wall portion 412 of the housing 41 in the radial direction of the rotor 10, and a slide portion 452 that can advance and retract along the slide rail 451.
According to the advance / retreat mechanism 45 </ b> B, the slide part 452 can be advanced and retracted along the slide rail 451 to advance and retract in the radial direction of the rotor 10 of the cutting tool 42.

FIG. 7 is a front view of the posture adjustment mechanism 45A.
The posture adjustment mechanism 45 </ b> A includes a wall portion 453 that is erected on the slide portion 452, and a blade tool support portion 454 that is fixed to the blade portion 42 and is slidably held on the wall portion 453.
A long hole 455 extending in an arc shape is formed in the wall portion 453. The cutting tool support 454 is formed with a protrusion 456 that is inserted into the elongated hole 455.
According to the posture adjustment mechanism 45A, the angle of the blade 42 with respect to the upper end surface of the rotor 10 can be adjusted by sliding the protrusion 456 along the elongated hole 455 to rotate the one edge of the blade support 454 as the rotation center. .

With the above-described blade adjustment mechanism 45, the posture of the blade 42 is set as follows.
As shown in FIG. 8, when a straight line extending in the radial direction from the rotation center of the rotor 10 in a plan view is a straight line A, the cutting tool 42 is disposed so that the blade 421 is inclined by a predetermined angle X with respect to the straight line A. The This is to allow the resin cut by the blade 421 to flow outward when the rotor 10 is rotated in the direction of the arrow in FIG.

Further, as shown in FIG. 9, when viewed from the side, when the straight line B constituting the upper end surface of the rotor 10 is used, the cutting tool 42 has the blade 421 parallel to the straight line B and the central axis of the cutting tool 42 is a straight line. It is arranged so as to be inclined by a predetermined angle Y with respect to B. Further, the distance between the blade 421 and the upper end surface of the rotor 10 is a predetermined dimension Z.
This is because the resin enters under the blade 421 if the blade 421 is excessively raised, the blade 421 is laid too much, or the distance between the blade 421 and the upper end surface of the rotor 10 is too wide. In particular, if the blade 421 is raised too much, the blade 421 may come into contact with characters engraved on the surface of the rotor 10.

Returning to FIG. 5, the vacuum mechanism 46 suctions the resin removed by the blade 42 through the vacuum hose 461 connected to the vicinity of the blade 42 in the outer wall portion 412 of the housing 41 and the vacuum hose 461. A suction device that does not.
Specifically, the vacuum hose 461 is provided behind the cutting tool 42 with respect to the rotational direction of the rotor 10.
According to this vacuum mechanism 46, the excised resin is recovered by driving the suction device, and is removed from the upper end surface of the rotor 10.

The operation of the rotor manufacturing apparatus 20 will be described with reference to FIG. In FIG. 10, the inner wall portion 413 is omitted.
First, the rotor 10 is placed on the base 31 so that the center axis of the rotor 10 and the center of rotation of the base 31 coincide.
Next, the first moving mechanism 50 </ b> A and the second moving mechanism 50 </ b> B adjust the relative position of the head unit 40 with respect to the rotor 10 to bring the first roller 43 and the second roller 44 of the head unit 40 into contact with the rotor 10. .
Next, the posture of the blade 42 and the position of the blade 42 with respect to the rotor 10 are adjusted by the blade adjustment mechanism 45.

  Thereafter, the motor 33 is driven and the suction device of the vacuum 46 is driven. Then, the rotor 10 rotates in the direction of the arrow in FIG. 10, and the resin 142 exposed from the upper lid 14 of the rotor 10 is excised by the blade 421 of the blade 42, and the excised resin is collected by the vacuum 46. .

According to this embodiment, there are the following effects.
(1) The cutting tool 42 was disposed on the upper end surface of the rotor 10, the rotor 10 was rotated by the motor 33, and the leaked resin was excised with the cutting tool 42. Therefore, since the resin leaking to the upper end surface side of the rotor 10 can be removed over the entire surface only by driving the motor 33, the leaked resin can be efficiently removed.
Further, the housing 41 is urged toward the upper end surface of the rotor 10 by the first urging portion 59 and the first roller 43 is brought into contact with the upper end surface of the rotor 10. Can be kept constant, and the leaked resin can be accurately removed without the cutting tool 42 contacting the rotor 10.

  (2) Since the position of the cutting tool 42 is adjusted after the first roller 43 is brought into contact with the upper end surface of the rotor 10, the cutting tool 42 can be prevented from coming into contact with the rotor 10.

(3) Since the second roller 44 that contacts the outer peripheral surface of the rotor 10 is provided, the radial position of the blade 10 of the blade 10 can be kept constant.
Concave portions 112 are formed on the outer peripheral surface of the rotor 10 at predetermined intervals along the circumferential direction. Even if one second roller 44 fits into the concave portion 112, at least the remaining portions remain on the rotor 10. Since the two second rollers 44 come into contact with the smooth arc-shaped portion of the outer circumferential surface of the rotor 10, it is possible to prevent the radial displacement of the blade 42 of the rotor 10 from occurring.

  (4) Since the resin removed by the cutting tool 42 is eliminated by the vacuum mechanism 46, it is possible to prevent the removed resin from remaining on the rotor 10.

It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the present embodiment, the vacuum mechanism 46 is provided as an exclusion mechanism. However, the present invention is not limited to this, and a blow mechanism may be provided to blow off the excised resin with air.

  Further, in the present embodiment, the two first rollers 43 are provided. However, the present invention is not limited to this, and at least three first rollers are provided. You may arrange | position apart in radial direction. In this case, the housing is urged toward the one end surface of the rotor by the first urging portion, and the first roller is brought into contact with the upper end surface of the rotor.

In this way, the following effects are obtained.
(5) Even if the upper end surface of the rotor is uneven, at least three first rollers are brought into contact with the upper end surface by the first urging portion. Therefore, since the posture of the cutting tool with respect to the upper end surface of the rotor can be kept constant, the occurrence of removal spots can be prevented and the leaked resin can be reliably removed.

It is a top view of the rotor manufactured by the rotor manufacturing apparatus which concerns on one Embodiment of this invention. It is the longitudinal cross-sectional view and side view of the rotor which concern on the said embodiment. It is a top view of the rotor manufacturing apparatus which concerns on the said embodiment. It is sectional drawing of the rotor manufacturing apparatus which concerns on the said embodiment. It is a top view of the head part of the rotor manufacturing apparatus which concerns on the said embodiment. It is a side view of the head part of the rotor manufacturing apparatus which concerns on the said embodiment. It is a front view of the attitude | position adjustment mechanism of the rotor manufacturing apparatus which concerns on the said embodiment. It is a top view which shows the attitude | position of the blade tool of the rotor manufacturing apparatus which concerns on the said embodiment. It is a side view which shows the attitude | position of the blade tool of the rotor manufacturing apparatus which concerns on the said embodiment. It is a perspective view which shows operation | movement of the rotor manufacturing apparatus which concerns on the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rotor 11 Yoke 13 Permanent magnet 16 Storage part 20 Rotor manufacturing apparatus 31 Base 33 Motor (rotation mechanism)
41 Housing 42 Cutting Tool 43 First Roller 44 Second Roller 45B Advance / Retract Mechanism (Blade Advance / Retract Mechanism)
46 Vacuum mechanism (exclusion mechanism)
59 First urging section (first urging means)

Claims (5)

For a rotor having a substantially cylindrical yoke provided with a storage portion and a magnet stored in the storage portion of the yoke and fixed with resin, the resin leaked from the storage portion to the one end surface side of the rotor is removed. A rotor manufacturing apparatus,
A base on which the rotor is placed with reference to the rotation axis;
A rotation mechanism for rotating the base;
A housing;
A cutting tool provided on the housing and positioned on one end surface of the rotor;
A first roller rotatably provided on the housing and positioned on one end surface of the rotor;
First urging means for urging the housing toward one end surface of the rotor,
The first urging means urges the housing toward one end surface of the rotor to bring the first roller into contact with one end surface of the rotor, and the rotor is rotated by the rotation mechanism. The rotor manufacturing apparatus, wherein the leaked resin is excised with the blade. The rotor manufacturing apparatus according to claim 1,
The housing includes a blade advancing / retreating mechanism for advancing and retracting the blade in the radial direction of the rotor,
After the first roller is brought into contact with one end surface of the rotor, the blade tool is advanced toward the rotor by the blade tool advance / retreat mechanism. The rotor manufacturing apparatus according to claim 1 or 2,
And at least three second rollers that are rotatably provided on the housing and abut against the outer peripheral surface of the rotor,
An interval between the second rollers along the circumferential direction of the outer circumferential surface of the rotor is uneven. The rotor manufacturing apparatus according to any one of claims 1 to 3,
A rotor manufacturing apparatus, further comprising an exclusion mechanism connected to the housing in the vicinity of the blade and for removing resin cut by the blade from one end surface of the rotor. In the rotor manufacturing apparatus according to any one of claims 1 to 4,
There are at least three first rollers, and those adjacent to each other among the first rollers are provided apart in the circumferential direction and the radial direction of the rotor,
The rotor manufacturing apparatus according to claim 1, wherein the first urging means urges the housing toward one end surface of the rotor and causes the first roller to abut on one end surface of the rotor.

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