JP2005057920A - Holder and method for assembling rotor for rotary electric machine, and rotor for the rotary electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a holder and a method for assembling a rotor for rotary electric machines and a rotor for rotary electric machines, wherein the laminated core of a rotor can be accurately assembled without welding, which has adverse effects on the performance of rotary electric machines. <P>SOLUTION: The rotor for rotary electric machines comprises a laminated core formed by laminating electromagnetic steel plates, and a plurality of permanent magnets fixed in holes formed in the laminated core. A means of assembling the rotor comprises a radial positioning mechanism, that defines the radial positions of laminated steel plates using the center hole formed in the electromagnetic steel plates, and a circumferential positioning mechanism that aligns the circumferential positions of the laminated steel plates, using the magnet insertion holes formed in the electromagnetic steel plates. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a rotor assembly jig for a rotating electrical machine, a rotor assembly method for the rotating electrical machine, and a rotor of the rotating electrical machine applied to a hybrid vehicle or the like.

Conventionally, in a permanent magnet type motor comprising a stator with windings mounted thereon, and a rotor composed of a plurality of permanent magnets and an iron core, the plurality of permanent magnets are disposed inside the iron core, and the magnet surfaces thereof are respectively The rotor is arranged around the rotation axis so as to face the rotor in the radial direction, and the iron core is welded at a position on the outer periphery of the laminated steel plate and in the radial direction from the magnetic pole center of the permanent magnet. (For example, refer to Patent Document 1).
JP 2002-3694246 A.

  However, in the conventional permanent magnet type motor, since welding is used as an alternative to the fixing pin for integrating the rotor composed of laminated steel plates, insulation between the laminated steel plates can be secured. However, the motor performance is adversely affected (for example, welding from the uppermost plate to the lowermost plate of the laminated steel plate forms a new coil by the weld bead, and an induced current flows when magnetic flux alternates on the coil surface. Joule loss and lower motor efficiency.).

  The present invention has been made paying attention to the above-mentioned problems, and it is possible to assemble a rotor assembly jig and a rotating machine for a rotating electrical machine that can assemble a laminated core of a rotor with high accuracy without performing welding that adversely affects the performance of the rotating electrical machine. An object of the present invention is to provide a rotor assembly method for an electric machine and a rotor for the electric machine.

  In order to achieve the above object, in the rotor assembly jig of the rotating electrical machine of the present invention,

  In a rotor of a rotating electrical machine having a laminated core formed by laminating electromagnetic steel plates, and a plurality of permanent magnets fixed to holes provided in the laminated core,

  Using a center hole formed in the electromagnetic steel sheet, a radial positioning mechanism that defines a radial position of the laminated steel sheet,

  Using a magnet insertion hole formed in the electromagnetic steel plate, a circumferential positioning mechanism that aligns the circumferential position of the laminated steel plates,

  Have

  Therefore, in the rotor assembly jig of the rotating electrical machine of the present invention, the radial position of the laminated steel plate is defined and the circumferential position is determined using the center hole and the magnet insertion hole formed in the electromagnetic steel sheet. Therefore, the laminated core of the rotor can be assembled with high accuracy without performing welding that adversely affects the performance of the rotating electrical machine.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for realizing a rotor assembly jig for a rotating electrical machine, a rotor assembly method for a rotating electrical machine, and a rotor for the rotating electrical machine according to the present invention will be described based on Example 1 and Example 2 shown in the drawings. .

  [Overall configuration of hybrid drive unit]

  FIG. 1 is an overall view of a hybrid drive unit to which the multi-shaft multilayer motor M (rotary electric machine) of the first embodiment is applied. The hybrid drive unit includes an engine E, a multi-shaft multilayer motor M, as shown in FIG. A Ravigneaux type compound planetary gear train G, a drive output mechanism D, a motor cover 1, a motor case 2, a gear housing 3, and a front cover 4 are provided.

  The engine E is a main power source of the hybrid drive unit, and the engine output shaft 5 and the second ring gear R2 of the Ravigneaux type planetary gear train G are connected via a rotation fluctuation absorbing damper 6 and an engine clutch 7. Yes.

  The multi-axis multilayer motor M is a sub-power source having two motor generator functions although it is one motor in appearance. The multi-axis multilayer motor M is fixed to the motor case 2 and includes a stator S as a fixed armature wound with a coil, an inner rotor IR disposed inside the stator S and having a permanent magnet embedded therein, and the stator The outer rotor OR, which is arranged outside the S and has a permanent magnet embedded therein, is arranged in three layers on the same axis. The first motor hollow shaft 8 fixed to the inner rotor IR is connected to the first sun gear S1 of the Ravigneaux-type compound planetary gear train G, and the second motor shaft 9 fixed to the outer rotor OR is the Ravigneaux-type compound planetary gear. It is connected to the second sun gear S2 of row G.

  The Ravigneaux type planetary gear train G is a differential gear mechanism having a continuously variable transmission function that continuously changes a transmission gear ratio by controlling two motor rotation speeds. The Ravigneaux type planetary gear train G includes a common carrier C that supports the first pinion P1 and the second pinion P2 that mesh with each other, a first sun gear S1 that meshes with the first pinion P1, and a second sun gear that meshes with the second pinion P2. It has five rotating elements, S2, a first ring gear R1 that meshes with the first pinion P1, and a second ring gear R2 that meshes with the second pinion P2. A low brake 10 is interposed between the first ring gear R1 and the gear housing 3 so as to be fixed to the low speed gear ratio by fastening. An output gear 11 is connected to the common carrier C.

  The drive output mechanism D includes an output gear 11, a first counter gear 12, a second counter gear 13, a drive gear 14, a differential 15, and drive shafts 16L and 16R. The output rotation and output torque from the output gear 11 pass through the first counter gear 12 → second counter gear 13 → drive gear 14 → differential 15 and are transmitted from the drive shafts 16L and 16R to the drive wheels (not shown). The

  That is, the hybrid drive unit connects the second ring gear R2 and the engine output shaft 5, connects the first sun gear S1 and the first motor hollow shaft 8, and connects the second sun gear S2 and the second motor shaft 9. And the output gear 11 is connected to the common carrier C.

  [Configuration of multi-axis multilayer motor]

  FIG. 2 is a longitudinal side view showing the multi-axis multilayer motor M according to the first embodiment, FIG. 3 is a longitudinal front view showing a 1/3 model of the multi-axis multilayer motor M according to the first embodiment, and FIG. 3 is a diagram illustrating an example of a composite current applied to a stator coil of a multilayer motor M. FIG.

  As shown in FIG. 2, the multi-axis multilayer motor M is configured by disposing an inner rotor IR, a stator S, and an outer rotor OR in a motor chamber 17 surrounded by the motor cover 1 and the motor case 2. Yes.

  The inner rotor surface of the inner rotor IR is fixed by press-fitting (or shrink fitting) to the stepped shaft end portion of the first motor hollow shaft 8. In this inner rotor IR, as shown in FIG. 3, an inner rotor magnet 21 (permanent magnet), which is arranged in consideration of magnetic flux formation with respect to a laminated core 20 made of laminated steel sheets, is divided into two in the rotor axial direction and divided into two. Twelve magnets are embedded in one part, and twelve magnets are embedded in the other part by shifting the magnet arrangement in the circumferential direction (hereinafter referred to as “skew”). However, the four inner rotor magnets 21 by W-shape arrangement | positioning comprise 1 pole pair, and are 3 pole pairs in the perimeter.

  The stator S includes a stator teeth laminate 41 in which stator teeth 40 made of electromagnetic steel plates are laminated, a coil 42 wound around each stator teeth laminate 41, a stator cooling water channel 43, an inner side bolt / nut 44, an outer A side bolt / nut 45 and a non-magnetic resin layer 46 that integrates the stator teeth laminates 41 without being independent of each other are configured. The front side end of the stator S is fixed to the motor case 2 via the front side end plate 47 and the stator fixing case 48.

  The coil 42 has 18 coils, and is arranged on the circumference while repeating a 6-phase coil three times as shown in FIG. Then, a composite current is applied to the six-phase coil from a non-illustrated inverter through a power supply connection terminal 50, a bus bar radial stack 51, a power connector 52, and a bus bar axial stack 53 (FIG. 4). reference). This composite current is a combination of a three-phase alternating current for driving the inner rotor IR and a six-phase alternating current for driving the outer rotor OR.

  The outer rotor OR has an outer cylindrical surface fixed to the outer rotor case 62 by brazing or bonding. And the front side connection case 63 is being fixed to the front side of the outer rotor case 62, and the back side connection case 64 is being fixed to the back side. The second motor shaft 9 is splined to the back side connection case 64. As shown in FIG. 3, the outer rotor OR 61 has an outer rotor magnet 61 (permanent magnet) arranged in consideration of magnetic flux formation with respect to the laminated core 60 made of laminated steel plates in the axial direction through a space at both end positions. Twelve are buried. The outer rotor magnet 61 is different from the inner rotor magnet 21 in that the two outer rotor magnets 61 constitute a single pole pair, and the entire circumference is a six pole pair.

  In FIG. 2, reference numerals 80 and 81 denote a pair of outer rotor bearings that support the outer rotor 6 on the motor case 2 and the motor cover 1. 82 is an inner rotor bearing for supporting the inner rotor IR on the motor case 2, 83 is a stator bearing for supporting the stator S with respect to the outer rotor OR, and 84 is interposed between the first motor hollow shaft 8 and the second motor shaft 9. It is an intermediate bearing.

  In FIG. 2, 85 is an inner rotor resolver that detects the rotational position of the inner rotor IR, and 86 is an outer rotor resolver that detects the rotational position of the outer rotor OR.

  [Basic functions of multi-axis multilayer motor M]

  By adopting a multi-shaft multilayer motor M in which two magnetic lines of outer rotor magnetic field lines and inner rotor magnetic field lines are formed with two rotors and one stator, the coil 42 and a coil inverter (not shown) are replaced with two inner rotors IR and outer rotors. Can be shared for OR. Then, by applying a composite current obtained by superimposing the current for the inner rotor IR and the current for the outer rotor OR to one coil 42, the two rotors IR and OR can be controlled independently. That is, in terms of appearance, one multi-axis multilayer motor M can be used as a combination of different or similar functions of the motor function and the generator function.

  Therefore, for example, compared to the case where a motor having a rotor and a stator and a generator having a rotor and a stator are provided, the size is greatly reduced, which is advantageous in terms of space, cost, and weight, and can be used as a common coil. Thus, loss due to current (copper loss, switching loss) can be prevented.

  Moreover, it has a high degree of freedom of selection such that it is possible to use (motor + motor) or (generator + generator) as well as the usage of (motor + generator) only by composite current control. When the hybrid vehicle is adopted as a driving source as in 1, the most effective or efficient combination can be selected from these many options according to the vehicle state.

  [Rotator configuration]

  FIG. 5 is a diagram showing an example in which no skew is set in the rotor (rotor) magnet. In the rotor core, a permanent magnet having the same length as the core axial length is embedded in the axial direction. . In this case, so-called “cogging torque” is generated.

  Here, “cogging torque” refers to a change in torque rotation angle based on a magnetic attraction force generated between a stator as a stator and a rotor as a rotor, that is, torque unevenness. And as a method of reducing this "cogging torque", it is proposed to skew the stator, skew the magnet, use a segmented segment magnet, use a segment magnet with an optimal polar arc rate, etc. .

  FIG. 6 is a diagram illustrating an example in which skew is set in the magnet of the rotor, and is an example in which the magnet is divided into two in the axial direction of the rotor and the arrangement of the magnets is shifted (skewed) in the circumferential direction. In the case of this example, the stable state of the A part and the unstable state of the B part are mixed, and the torque that tries to keep the stable state in the A part and the transition from the unstable state to the stable state in the B part. Since the torques to be generated are simultaneously generated and cancel each other, the “cogging torque” can be reduced as compared with the case without skew shown in FIG.

  Incidentally, in the case of the first embodiment, a skew is set in the inner rotor magnet 21 of the inner rotor IR as a countermeasure against cogging torque by providing a deviation angle (for example, 10 degrees) in the circumferential direction in two divisions. Hereinafter, the configuration of the rotor assembly jig applied to the inner rotor IR and the rotor assembly process will be described.

  [Configuration of rotor assembly jig]

  FIG. 7 is a cross-sectional view taken along a line AA in FIG. 8 showing a steel plate lamination preparation process of the rotor assembly jig for assembling the inner rotor IR of the first embodiment, and FIG. 8 is a rotor assembly jig for assembling the inner rotor IR of the first embodiment. It is a top view which shows the steel plate lamination | stacking preparatory process.

  As shown in FIGS. 7 and 8, the rotor jig includes a base plate 91 (base member), a shaft 92 (shaft member), a locate shaft 93 (first positioning pin member), and an adjustment shaft 94 (first member). 2 positioning pin member), an adjustment shaft 94 ′ (alignment pin member), an outer plate rear 95, an inner plate rear 96, and a clamp shaft 97.

  The base plate 91 is the basis of the entire jig. The shaft 92 is a radial positioning mechanism that has an outer diameter slightly smaller than the center hole of each electromagnetic steel plate and defines the radial position when the electromagnetic steel plates are laminated. The shaft 92 is formed with a male screw portion 92a, the base plate 91 is formed with a central hole 91a and a female screw portion 91b, and the shaft 92 is screwed into the base plate 91 in a positioning state with a light intermediate fit.

  The locate shaft 93 is a circumferential positioning member using a magnet insertion hole of a laminated steel plate, and is set with a light intermediate fit in the pin hole 91b of the base plate 91. The two adjustment shafts 94 and 94 'are arranged at positions facing the locate shaft 93. The adjustment shaft 94 is a circumferential positioning member using a magnet insertion hole of a laminated steel plate, and the adjustment shaft 94' is laminated. It is the circumferential direction alignment member using the magnet insertion hole of a steel plate. An adjustment shaft 94 that is a circumferential positioning member is set by an intermediate fit in a pin hole 91 c of the base plate 91, and an adjustment shaft 94 ′ that is a circumferential alignment member is inserted through a movable gap 91 d formed in the base plate 91. Is set.

  The outer plate rear 95, together with the base plate 91 and the shaft 92, is a positioning function member that is left when the laminated steel plate is completely clamped and removed from the assembly jig, and rotates around the shaft 92 via a key 98. At the same time, the base plate 91 is screwed and fixed to the base plate 91. The inner plate rear 96 is a clamp functional member that is transferred to the next step (shrink fit) while holding the back side of the laminated steel plate when the laminated steel plate is clamped and removed from the assembly jig. The outer plate rear 95 is screwed and fixed with bolts 100. The clamp shaft 97 is a clamp function member that obtains an axial tightening force (clamping force) of the laminated steel plate. A male screw portion 97a is formed at one end of the clamp shaft 97. Eight are fixed at intervals. A female screw portion 97b is formed in the axial direction on the opposite side of the male screw portion 97a of the clamp shaft 97.

  14 is a plan view showing a laminated steel plate positioning process of the rotor assembly jig for assembling the inner rotor IR of the first embodiment, and FIG. 15 is a laminated steel plate of the rotor assembly jig for assembling the inner rotor IR of the first embodiment. It is sectional drawing which shows a position alignment process, and as shown in FIG.14 and FIG.15, as for the position alignment of a laminated steel iron, the movable gap 91a formed in the baseplate 91 and the movable gap 95a formed in the outer plate rear 95 are shown. The first adjustment mechanism 101 is fitted to the upper and lower end portions of the adjustment shaft 94 ′ set via the first adjustment mechanism 101 and aligns the positions of the laminated steel plates by linear movement by pulling along the movable gaps 91d and 95a.

  FIG. 16 is a cross-sectional view showing a clamping process in which steel plate lamination and alignment are completed by the rotor assembly jig for assembling the inner rotor IR of the first embodiment. A plate front 105, an inner plate front 106, and a clamp bolt 107 are provided.

  The outer plate front 105 forms a pair with the outer plate rear 95 and is a positioning function member that is left when the laminated steel plate is clamped and removed from the assembly jig. Is prevented from rotating. The inner plate front 106 is paired with the inner plate rear 96, and when the laminated steel plate is clamped and removed from the assembly jig, the next step (shrink fit) is performed while holding the front side of the laminated steel plate. Is clamped and fixed to the outer plate front 105 by a bolt 109. The clamp bolt 107 is a clamp function member that obtains the clamping force of the laminated steel plate, and in the state where the electromagnetic steel plate is laminated between the inner plate front 106 and the end of the clamp shaft 97, an axial gap t is provided. The clamp bolt 107 is screwed into the female screw portion 97b of the clamp shaft 97, and a clamping force for tightly laminating the electromagnetic steel plates is generated by screwing.

  [Rotor assembly process]

  A rotor assembling process using the rotor assembling jig will be described. The rotor assembly process includes a steel plate lamination preparation step (FIGS. 7 and 8), a lower steel plate lamination step (FIGS. 9 and 10), an upper steel plate lamination step (FIGS. 11 and 12), and a laminated steel. A rivet position aligning process (FIGS. 13, 14, and 15), a laminated steel rivet clamping process (FIG. 16), and an assembly jig removing process (FIG. 17) are included. Hereinafter, each step will be described.

  ・ Steel stacking preparation process (Figs. 7 and 8)

  In the steel plate stacking preparation process, the outer plate front 105, the inner plate front 106, the clamp bolt 107, and the bolt 109 are removed, and as shown in FIGS. 7 and 8, a base plate 91, a shaft 92, a locate shaft 93, It waits in the state provided with the adjustment shafts 94 and 94 ′, the outer plate rear 95, the inner plate rear 96, and the clamp shaft 97, that is, the front side is opened.

  ・ Lower steel sheet laminating process (Figs. 9 and 10)

  In the lower steel plate laminating step, the notch provided on the outer periphery of each electromagnetic steel sheet is aligned with the alignment mark LWR (see FIG. 10) of the inner plate rear 6, and the shaft 92, the locating shaft 93, and the adjusting shafts 94, 94 ′. All of the above are penetrated, and as shown in FIG. Thereby, the assembly direction is automatically aligned including the front and back of the electromagnetic steel sheet.

  ・ Steel stacking process (Figs. 11 and 12)

  In the upper steel plate laminating step, the notch provided on the outer periphery of each electromagnetic steel sheet is aligned with the alignment mark UPR (see FIG. 12) of the inner plate rear 6, and the shaft 92, the locating shaft 93, and the adjusting shafts 94, 94 ′. All the above are penetrated, and as shown in FIG. Thereby, the assembly direction is automatically aligned including the front and back of the electromagnetic steel sheet.

  ・ Laminated steel plate alignment process (Figs. 13, 14, and 15)

In the laminated steel plate positioning process, as shown in FIG. 13, the outer plate front 105 and the inner plate front 106 that are screwed together by the bolt 109 are replaced with the shaft 92 and the locate shaft 93 when the specified number of sheets has been laminated. And the adjustment shafts 94 and 94 ′ are assembled so as to pass through.
Then, the clamp shaft 97 and the inner plate front 106 are temporarily fastened with the clamp bolts 107 by hand tightening, and as shown in FIG. 14 and FIG. 15, the first adjustment mechanism 101 is pulled in the direction of the arrow to adjust the adjustment shaft 94 ′. Operate and align the magnetic steel sheets.

  That is, the electromagnetic steel sheets whose assembly directions including the front and back surfaces are aligned are operated in directions opposite to each other in the circumferential direction with respect to the skewed electromagnetic steel sheets by operating the adjustment shaft 94 'in the direction of the arrow in FIGS. At the same time, the electromagnetic steel sheets that have been skewed try to rotate in opposite directions, but are regulated by the locating shaft 93 so that the skew angle and the respective laminated cores are aligned.

  ・ Laminated steel clamp process (Fig. 16)

In the laminated steel rod clamping step, after adjusting the magnetic steel sheets by operating the adjustment shaft 94 ′, the clamp bolt 107 is tightened with a specified tightening torque to clamp the laminated core as shown in FIG.
Here, it is confirmed that the lamination thickness dimension of the laminated core satisfies the design value, and when the design value is removed, the number of laminated cores is adjusted.

  ・ Assembly jig removal process (Figure 17)

In the assembly jig removing step, the adjustment shafts 94 and 94 ′, the locate shaft 93 and the shaft 92 are extracted from the clamped state shown in FIG. 16, the bolts 99 are removed, and the base plate 91 is removed from the outer plate rear 95.
Then, the bolt 100 is removed, the outer plate rear 95 is removed from the inner plate rear 96, the bolt 105 is removed, and the outer plate front 105 is removed from the inner plate front 106.
With the above operation, as shown in FIG. 17, the upper and lower laminated cores set with skew are clamped by the inner plate rear 96, the inner plate front 106, the clamp shaft 97, and the clamp bolt 107.

  -Rotor fixing process to the shaft

  In the rotor fixing process to the shaft, the laminated core (FIG. 17) clamped by the inner plate rear 96, the inner plate front 106, the clamp shaft 97, and the clamp bolt 107 is shrink-fitted to the first motor hollow shaft 8. To fix.

  ・ Permanent magnet installation process

In the permanent magnet mounting step, when the shrink-fit of the laminated core to the first motor hollow shaft 8 is completed, the inner rotor magnet 21 is inserted into the laminated core 20 and bonded.
When the adhesive is completely dried, the clamp bolts 107 are removed to remove all the jigs (the inner plate rear 96, the inner plate front 106, and the clamp shaft 97) from the inner rotor IR.

  [Assembly of the rotor]

  When assembling a skewed rotor, align the notch provided on the outer periphery of the magnetic steel plate with the alignment mark LWR of the inner plate rear 96 and insert it into all the shafts 92, 93, 94 ′, so that the lower electromagnetic The assembling direction of the steel plate is aligned including the front and back. Then, after laminating the prescribed number of LWR side, align the notch provided on the outer periphery of the electromagnetic steel plate with the alignment mark UPR of the inner plate rear 96, and insert it into all the shafts 92, 93, 94, 94 ′. Thus, the assembly direction of the upper steel sheet including the back and front is aligned.

  Thereafter, the adjustment shaft 94 ′ is actuated in the direction of the arrow by the first adjustment mechanism 101, so that the skewed electromagnetic steel sheets are simultaneously pressurized in the opposite directions in the circumferential direction. However, it is restricted by the locating shaft 93, and the skew angle and the respective laminated cores are aligned. Moreover, in the case of the first embodiment, the operation mode of the adjustment shaft 94 ′ is a linear motion, which is effective for a rotor having a small laminated core thickness.

  As described above, in the rotor assembly jig and the rotor assembly method according to the first embodiment, it is possible to assemble the rotor without removing the clamp until the rotor is completed after clamping after stacking the laminated cores. Yes, it is difficult to cause phase shift during the assembly of laminated cores, contributing to quality control.

  The rotor assembly jig according to the first embodiment can also be applied when assembling a skew-free rotor. In this case, the axis of the laminated core is determined by the shaft 92, and the adjustment shaft 94 ′ moves in the direction of the arrow. Then, a pressure is applied to the side of the laminated core where the magnet insertion hole is in contact with the adjustment shaft 94 ′, and the laminated core tries to rotate in the direction of the arrow, but is restricted by the locate shaft 93 and the circumferential position is aligned. Further, since there is no need to position the skew angle, the adjustment shaft 94 can be omitted from the adjustment shafts 94 and 94 '.

Next, the effect will be described.
The effects listed below can be obtained in the rotor assembly jig for the rotating electrical machine, the rotor assembly method for the rotating electrical machine, and the rotor of the rotating electrical machine according to the first embodiment.

  (1) In a rotor of a rotating electrical machine having a laminated core formed by laminating electromagnetic steel sheets and a plurality of permanent magnets fixed to holes provided in the laminated core, the center formed in the electromagnetic steel sheet Using a hole, a radial positioning mechanism that defines the radial position of the laminated steel sheet, and a circumferential positioning mechanism that aligns the circumferential position of the laminated steel sheet using a magnet insertion hole formed in the electromagnetic steel sheet, Therefore, the laminated core of the rotor can be assembled with high accuracy using the center hole and the magnet insertion hole formed in the electromagnetic steel sheet without performing welding that adversely affects the performance of the rotating electrical machine.

  (2) When the laminated steel sheet of the rotor has a skew setting in the circumferential direction, the radial positioning mechanism is provided on the base plate 91 which is the basis of the entire jig, and has an outer diameter slightly smaller than the center hole of the electromagnetic steel sheet. The circumferential positioning mechanism is fixed to the base plate 91 and has a locate shaft 93 that passes through the skewed two magnet insertion holes, and the skewed two magnet insertion holes that are fixed to the base plate 91. Since the adjustment shaft 94 passes through the base plate 91 and the adjustment shaft 94 ′ is provided so as to be movable with respect to the base plate 91 and penetrates the two skewed magnet insertion holes, the laminated core can be easily skewed. Positioning in the circumferential direction of angles and laminated steel sheets is possible, contributing to improved workability and reduced work time Product cost can be reduced.

  (3) After aligning the laminated steel plate, a clamp mechanism is provided to clamp the laminated steel plate while maintaining the alignment state even if the radial positioning mechanism and circumferential positioning mechanism are removed. It is possible to carry out until the laminated core is shrink-fitted on the rotor shaft and the magnet is inserted into the laminated core without exchanging the clamp jig, and there is a skew without joining such as welding. The rotor can be assembled and can contribute to the improvement of the performance of the rotating electrical machine.

  (4) Since the first adjusting mechanism 101 for positioning the skew angle of the laminated steel sheet and aligning in the circumferential direction by linearly moving in a single direction is provided on the adjustment shaft 94 ′, the magnet insertion hole in the skewed state is provided. By using the penetrating portion, the skew angle of the laminated core and the circumferential positioning of the laminated steel sheet can be performed with a simple operation, which contributes to improvement in workability and shortening of work time, and reduction in product cost. In addition, this is effective for a rotor having a small laminated core thickness.

  (5) In a rotor of a rotating electrical machine having a laminated core formed by laminating electromagnetic steel sheets and a plurality of permanent magnets fixed to holes provided in the laminated core, the center formed in the electromagnetic steel sheet Lamination process for laminating a plurality of electromagnetic steel plates while defining radial positions using holes, and a laminated steel plate for aligning circumferential positions of laminated steel plates using magnet insertion holes formed in the electromagnetic steel plates Therefore, it is possible to accurately assemble a laminated core of a rotor using a center hole and a magnet insertion hole formed in a magnetic steel sheet without performing a welding that adversely affects the performance of the rotating electrical machine. it can.

  (6) If the laminated steel plate of the rotor has a skew setting in the circumferential direction, the center hole formed in the electromagnetic steel plate is inserted into the shaft 92 while aligning the circumferential position of all the lower electromagnetic steel plates to be laminated. The lower steel sheet laminating step for laminating the lower electromagnetic steel sheet by inserting the magnet insertion holes formed in the electromagnetic steel sheet into the locate shaft 93, the adjusting shaft 94 and the adjusting shaft 94 ', and all the upper electromagnetic steel sheets to be laminated The center hole formed in the electromagnetic steel plate is inserted into the shaft 92 while adjusting the circumferential position of the flange, and the magnet insertion hole formed in the electromagnetic steel plate is inserted into the locate shaft 93, the adjustment shaft 94, and the adjustment shaft 94 ′. The upper steel sheet laminating step for inserting and laminating the lower electromagnetic steel sheet and moving the adjustment shaft 94 'in a predetermined direction Since it has a laminated steel plate alignment process that simultaneously pre-loads the multi-layered steel plate in the reverse direction to position the skew angle and align the laminated steel plate in the circumferential direction, Since the positioning of the angle and the circumferential direction of the laminated steel plates becomes possible, it is possible to contribute to improvement in workability and shortening of work time, and reduction in product cost.

  (7) After aligning the laminated steel plate by the laminated steel plate aligning step, the laminated steel plate clamping step of clamping the laminated steel plate by the clamp mechanism, and maintaining the clamped state of the aligned laminated steel plate Since the assembly jig removing step for removing the shaft 92, the locate shaft 93, the adjustment shaft 94, and the adjustment shaft 94 ′ is provided, the skewed laminated core is shrink-fitted onto the rotor shaft, Until the magnet is inserted, the clamping jig can be replaced without replacement, and a skewed rotor can be assembled without joining by welding or the like, which can contribute to improving the performance of the rotating electrical machine.

  (8) The laminated steel plate aligning step is a step of positioning the skew angle and aligning the laminated steel plate in the circumferential direction by linearly moving the adjustment shaft 94 ′ in a single direction by the first adjusting mechanism 101. Therefore, the skew angle of the laminated core and the circumferential positioning of the laminated steel sheets can be done with simple operations using the through-holes of the magnet insertion holes in the skewed state, which can contribute to improving workability and shortening the working time. Product cost can be reduced. In addition, this is effective for a rotor having a small laminated core thickness.

  (9) In a rotor of a rotating electrical machine having a laminated core formed by laminating electromagnetic steel plates and a plurality of permanent magnets fixed to holes provided in the laminated core, the laminated steel of the rotor When there is a skew setting in the circumferential direction, the skewed two magnet insertion holes have overlapping portions, so that the rotation of a simple configuration can be achieved by utilizing the overlapping of the two magnet insertion holes regardless of the skew setting. It can be set as a child assembly jig, and it can be set as the easy rotor assembly method which can reduce a man-hour.

  The second embodiment is an example in which the operation form of the adjustment shaft 94 ″ for positioning the laminated core skew angle and the laminated steel sheet in the circumferential direction is a rotational motion.

  That is, as shown in FIGS. 18 and 19, a cam portion 94a having a cam-like cross section is formed at a portion corresponding to the magnet insertion hole of the adjustment shaft 94 ", and a second adjustment by a rotary lever is provided at the lower end portion of the adjustment shaft 94". The mechanism 102 is provided. Since the second embodiment is structurally different only in that a second adjustment mechanism 102 is provided instead of the first adjustment mechanism 101 of the first embodiment, description of other configurations is omitted.

  As for the operation, when the skew angle of the laminated core and the circumferential positioning of the laminated steel plates are performed, the adjustment shaft 94 ′ is linearly moved by the first adjustment mechanism 101 in the case of the first embodiment, whereas the second embodiment is used. In this case, the second adjustment mechanism 102 is different only in that the adjustment shaft 94 ″ is rotated.

Next, the effect will be described.
In the rotor assembly jig of the rotating electrical machine, the rotor assembly method of the rotating electrical machine, and the rotor of the rotating electrical machine of the second embodiment, the effects of (2) and (3) of the first embodiment and the effects of the first embodiment are described. In addition to the effects (6) and (7), the following effects can be obtained.

  (10) Since the second adjustment mechanism 102 for positioning the skew angle of the laminated steel sheet and aligning in the circumferential direction is provided on the adjustment shaft 94 "by rotating in a single direction, the magnet insertion hole in the skewed state is provided. The skew angle of the laminated core and the circumferential direction positioning of the laminated steel sheets can be performed with a simple operation using the through-holes of the metal, contributing to improvement of workability and shortening of the work time, and reduction of product cost. This is effective for a rotor having a relatively large laminated core thickness.

  (11) The laminated steel plate alignment step is a step of positioning the skew angle and aligning the laminated steel plate in the circumferential direction by rotating the adjustment shaft 94 "in a single direction by the second adjustment mechanism 102. Therefore, the skew angle of the laminated core and the circumferential positioning of the laminated steel sheets can be done with simple operations using the through-holes of the magnet insertion holes in the skewed state, which can contribute to improving workability and shortening the working time. In addition, the product cost can be reduced, and it is effective for a rotor having a relatively large laminated core thickness.

  As described above, the rotor assembly jig of the rotating electrical machine, the rotor assembly method of the rotating electrical machine, and the rotor of the rotating electrical machine according to the present invention have been described based on the first embodiment and the second embodiment. The present invention is not limited to the embodiments described above, and design changes and additions are permitted without departing from the spirit of the invention according to each claim of the claims.

  For example, if the radial positioning mechanism is a mechanism that regulates the radial position of the laminated steel plate using a center hole formed in the electromagnetic steel plate, the specific configuration is limited to the first and second embodiments. In addition, if the circumferential positioning mechanism is a mechanism that aligns the circumferential position of the laminated steel plates using the magnet insertion holes formed in the electromagnetic steel plate, the specific configuration is as in Example 1 and the implementation. It is not limited to Example 2.

  In the second embodiment, an example in which the cam portion 94a is formed on the adjustment shaft 94 "and rotated is used as the second adjustment mechanism 102. However, an eccentric collar or the like is provided on the support portion of the adjustment shaft 94" to provide the second adjustment mechanism 102. It is good also as a mechanism which rotates eccentrically by rotation operation by.

  The rotor assembly jig of the rotating electrical machine, the rotor assembly method of the rotating electrical machine, and the rotor of the rotating electrical machine of the present invention showed an example applied to the inner rotor of the multi-axis multilayer motor employed in the hybrid drive unit, Of course, as long as it is a rotating electrical machine having a rotor in which a permanent magnet is fixed in a hole provided in a laminated core, it can be applied as an assembly jig for an outer rotor. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic overall view showing a hybrid drive unit to which a multi-axis multilayer motor (rotary electric machine) of Example 1 is applied. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal side view illustrating a multi-axis multilayer motor M according to a first embodiment. 1 is a longitudinal front view showing a 1/3 model of a multi-axis multilayer motor M according to Embodiment 1. FIG. 3 is a diagram illustrating an example of a composite current applied to a stator coil of the multi-axis multilayer motor M of Embodiment 1. FIG. It is a schematic sectional drawing which shows the case where the skew is not set to the magnet of a rotor. It is a schematic sectional drawing which shows the case where skew is set to the magnet of the rotor. It is a vertical side view of the rotor assembly jig | tool which shows the steel plate lamination | stacking preparation process by the rotor assembly method of Example 1. FIG. It is a top view of the rotor assembly jig which shows the steel plate lamination | stacking preparation process by the rotor assembly method of Example 1. FIG. It is sectional drawing which shows the lower steel plate lamination | stacking process by the rotor assembly method of Example 1. FIG. It is a top view which shows the lower steel plate lamination | stacking process by the rotor assembly method of Example 1. FIG. It is sectional drawing which shows the upper stage steel plate lamination | stacking process by the rotor assembly method of Example 1. FIG. It is a top view which shows the upper stage steel plate lamination | stacking process by the rotor assembly method of Example 1. FIG. It is sectional drawing which shows the lamination steel plate position alignment preparation state in the laminated steel plate position alignment process by the rotor assembly method of Example 1. FIG. It is a top view which shows the adjustment operation | work by the 1st adjustment mechanism in the laminated steel plate position alignment process by the rotor assembly method of Example 1. FIG. It is sectional drawing which shows the adjustment operation | work by the 1st adjustment mechanism in the laminated steel plate position alignment process by the rotor assembly method of Example 1. FIG. It is sectional drawing which shows the laminated steel iron clamp process by the rotor assembly method of Example 1. FIG. It is sectional drawing which shows the clamped laminated steel plate which shows the assembly jig removal process by the rotor assembly method of Example 1. FIG. It is sectional drawing which shows the adjustment operation | work by the 2nd adjustment mechanism in the laminated steel plate position alignment process by the rotor assembly method of Example 2. FIG. It is a bottom view which shows the adjustment work by the 2nd adjustment mechanism in the laminated steel plate position alignment process by the rotor assembly method of Example 2. FIG.

Explanation of symbols

M Double-axis multilayer motor (rotary electric machine)
S stator
IR inner rotor (rotor)
OR outer rotor 8 first motor hollow shaft 9 second motor shaft 20 laminated core 21 inner rotor magnet (permanent magnet)
40 Stator Teeth 41 Stator Teeth Laminated Body 42 Coil 60 Laminated Core 61 Outer Rotor Magnet 91 Base Plate (Base Member)
92 Shaft (Shaft member)
93 Locate shaft (first positioning pin member)
94 Adjust shaft (second positioning pin member)
94 'Adjustment shaft (Alignment pin member)
95 Outer plate rear 96 Inner plate rear 97 Clamp shaft 98 Key 99 Bolt 100 Bolt 101 First adjustment mechanism 105 Outer plate front 106 Inner plate front 107 Clamp bolt 108 Key 109 Bolt

Claims (11)

In a rotor of a rotating electrical machine having a laminated core formed by laminating electromagnetic steel plates, and a plurality of permanent magnets fixed to holes provided in the laminated core,
Using a center hole formed in the electromagnetic steel sheet, a radial positioning mechanism that defines a radial position of the laminated steel sheet,
Using a magnet insertion hole formed in the electromagnetic steel plate, a circumferential positioning mechanism that aligns the circumferential position of the laminated steel plates,
A rotor assembly jig for a rotating electric machine, comprising: In the rotor assembly jig of the rotating electrical machine according to claim 1,
If there is a skew setting in the circumferential direction of the laminated steel plate of the rotor,
The radial positioning mechanism is a shaft member that is provided on a base member that is the basis of the entire jig, and has an outer diameter slightly smaller than the center hole of the electromagnetic steel sheet,
The circumferential positioning mechanism includes a first positioning pin member that is fixed to the base member and passes through the skewed two magnet insertion holes, and a first positioning pin member that is fixed to the base member and passes through the skewed two magnet insertion holes. 2. A rotor assembly for a rotating electrical machine, comprising: a positioning pin member; and a positioning pin member provided so as to be movable with respect to the base member and penetrating through two skewed magnet insertion holes. jig. In the rotor assembly jig of the rotating electrical machine according to claim 1 or 2,
A rotating electrical machine comprising a clamp mechanism that clamps the laminated steel sheet while maintaining the alignment state even after the radial positioning mechanism and the circumferential positioning mechanism are removed after the laminated steel sheet is aligned Rotor assembly jig. In the rotor assembly jig of the rotating electrical machine according to claim 2 or claim 3,
A rotor assembly jig for a rotating electrical machine, wherein the alignment pin member is provided with a first adjustment mechanism for positioning a skew angle of a laminated steel sheet and aligning in a circumferential direction by linearly moving in a single direction. . In the rotor assembly jig of the rotating electrical machine according to claim 2 or claim 3,
A rotor assembly jig for a rotating electrical machine, wherein the alignment pin member is provided with a second adjustment mechanism for positioning the skew angle of the laminated steel sheet and aligning in the circumferential direction by rotating in a single direction. . In a rotor of a rotating electrical machine having a laminated core formed by laminating electromagnetic steel plates, and a plurality of permanent magnets fixed to holes provided in the laminated core,
Lamination step of laminating a plurality of electromagnetic steel plates while defining the radial position using the center hole formed in the electromagnetic steel plate,
Using the magnet insertion hole formed in the electromagnetic steel sheet, a laminated steel sheet position aligning step for aligning the circumferential position of the laminated steel sheet,
A method of assembling a rotor of a rotating electrical machine, comprising: In the rotor assembly method for a rotating electrical machine according to claim 6,
If there is a skew setting in the circumferential direction of the laminated steel plate of the rotor,
A center hole formed in the electromagnetic steel sheet is inserted into the shaft member while aligning the circumferential positions of all the lower electromagnetic steel plates to be laminated, and the first positioning pin member, the second positioning pin member, and the alignment pin member A lower steel sheet laminating step for laminating a lower electromagnetic steel sheet by inserting a magnet insertion hole formed in the electromagnetic steel sheet against
A center hole formed in the electromagnetic steel sheet is inserted into the shaft member while aligning the circumferential position of all upper electromagnetic steel plates to be laminated, and the first positioning pin member, the second positioning pin member, and the alignment pin member An upper steel sheet laminating step for laminating a lower electromagnetic steel sheet by inserting a magnet insertion hole formed in the electromagnetic steel sheet against
Laminated steel for positioning the skew angle and aligning the circumferential direction of the laminated steel plate by moving the alignment pin member in a predetermined direction to simultaneously apply a preload in the opposite direction to the lower laminated steel plate and the upper laminated steel plate.鈑 Alignment process,
A method of assembling a rotor of a rotating electrical machine, comprising: In the rotor assembly method of the rotating electrical machine according to claim 6 or 7,
After aligning the laminated steel plate by the laminated steel plate aligning step, a laminated steel plate clamping step of clamping the laminated steel plate by a clamp mechanism;
An assembly jig removing step of removing the shaft member, the first positioning pin member, the second positioning pin member, and the alignment pin member while maintaining the clamped state of the aligned laminated steel sheet;
A method for assembling a rotor of a rotating electric machine, comprising: In the rotor assembly method for a rotating electrical machine according to claim 7 or 8,
The laminated steel plate aligning step is a step of positioning the skew angle and aligning the laminated steel plate in the circumferential direction by linearly moving the alignment pin member in a single direction by the first adjusting mechanism. A rotor assembly method for a rotating electrical machine. In the rotor assembly method for a rotating electrical machine according to claim 7 or 8,
The laminated steel plate alignment step is a step of positioning the skew angle and aligning the laminated steel plate in the circumferential direction by rotating the alignment pin member in a single direction by the second adjustment mechanism. A rotor assembly method for a rotating electrical machine. In a rotor of a rotating electrical machine having a laminated core formed by laminating electromagnetic steel plates, and a plurality of permanent magnets fixed to holes provided in the laminated core,
When the laminated steel sheet of the rotor has a skew setting in the circumferential direction, the rotor of the rotating electrical machine has a portion where two skewed magnet insertion holes overlap.

Images