WO1996012336A1 - Rotor pour machine rotative, son procede de fabrication et unite a aimant - Google Patents
Rotor pour machine rotative, son procede de fabrication et unite a aimant Download PDFInfo
- Publication number
- WO1996012336A1 WO1996012336A1 PCT/JP1995/002102 JP9502102W WO9612336A1 WO 1996012336 A1 WO1996012336 A1 WO 1996012336A1 JP 9502102 W JP9502102 W JP 9502102W WO 9612336 A1 WO9612336 A1 WO 9612336A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- permanent magnet
- rotating machine
- rotor body
- rare earth
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Definitions
- the present invention relates to a rotor for a rotating machine, a method for manufacturing the rotor, and a magnet unit.
- This rotating machine includes a motor and a generator.
- This kind of rotor is composed of a mouth body, a number of permanent magnets joined to the mouth body, and the like.
- each permanent magnet is different, such as the coefficient of thermal expansion of the rotor body.
- a conventional method is used in which the permanent magnets of the rotor body and the extruder are joined through a heating process and a cooling process that follows.
- the rotor's temperature rises with the operation of the rotating machine.
- the joining strength of the permanent magnet decreases markedly ⁇ Yes, when is the problem?
- the need for high-speed rotation of the motor cannot be reached at all.
- the permanent magnets are used in the cooling process after the heating process. Since the thermal expansion coefficient of the steel rotor body is larger than that, the permanent magnet may crack.
- the thermal expansion coefficient in the cooling step can avoid cracking of the small permanent magnets. To provide children.
- the manufacturing process of the rotor for the rotating machine includes forming the bonding surface of the motor body having a large coefficient of thermal expansion in the cooling step by gathering a small number of bonding surfaces of an exothermic number.
- the rotor body and the respective permanent magnets expand, for example, their length becomes longer than before heating.
- each small joint surface forming portion is shrunk four times or more and then joined to each permanent magnet. As a result, the rotor body is confined to a state longer than the length before heating.
- the present invention has a relatively high rotor strength; even if the rotor temperature rises, the permanent magnet bonding strength is not impaired, and the rotor temperature can be increased or lowered to avoid permanent magnet cracking.
- the aim is to provide machine rotors.
- a number of permanent magnets are formed by stacking a plurality of slopes and joined to the outer peripheral surface of the rotor body via a brazing material I, such as a cylindrical rotor body.
- the permanent magnets are rotating rotors extending in the direction of the outer circumferential surface of the rotor main body and adjacent to each other, with a space between the rain permanent magnets, and at least the direction of the rotor main body.
- each permanent magnet joint of the steel plate of the number of extremities bends to the outer side of the rotor body in the presence of slits existing on both sides of the joint, so that rain that is adjacent in the direction A rotating rotor is provided having a gap between the permanent magnet joints.
- each permanent magnet is joined to the rotor body via the filler material, the rotor temperature decreases the joining strength of the synthetic resin adhesive with the operation of the rotating machine. Even if it rises to 0 0, the joining strength of each permanent magnet will not be impaired.
- a further object of the present invention is to provide the above-mentioned method for manufacturing a rotor for a rotating machine having the above-mentioned characteristics without causing cracks in each permanent magnet.
- a cylindrical rotor body formed by laminating a plurality of steel plates is bonded to an outer peripheral surface of the rotor body via a brazing material layer, and has a number of permanent members.
- These permanent magnets extend in the direction of the generatrix of the outer peripheral surface of the rotor body and are adjacent to each other. Extends inward from the outer peripheral surface on both sides of each permanent magnet joint
- a rotor body is prepared by stacking the rotor bodies with slits, and the respective permanent magnets are superimposed on the respective permanent magnet joints of the rotor body via a filter material, and then heated.
- a method for manufacturing a tiller mouth which joins each permanent magnet to the rotor body via a material layer.
- each steel plate becomes thicker than before heating, and the length of each permanent magnet becomes longer than before heating.
- each steel plate shrinks and the permanent magnets are joined together at the same time.
- the permanent magnet joints located on the other end side of the magnet joints are bent away from each other in the presence of the slit, that is, outwardly of the rotor body.
- a gap is formed between the two permanent magnet joints adjacent to each other in the axial direction, so that the permanent magnet joint side of the rotor body is restrained in a state longer than the length before heating.
- the present invention is based on the assumption that the bonding strength of each permanent magnet is a certain degree, and that even if the rotor temperature rises, the bonding strength of each permanent magnet is not impaired.
- the purpose of the present invention is to provide a rotor having a high rotational speed.
- a rotor main body and a number of magnet units which are mounted on an outer peripheral portion of the rotor body, and each magnet unit is mounted on a front 15 rotor body.
- the pedestal to be provided is provided with a rotatable terminal composed of permanent magnets joined to the pedestal via a brazing material layer under heating.
- the permanent magnet is joined by a joining method using a material. Therefore, the bonding strength of each permanent magnet is high, and the rotor a degree decreases the bonding strength of the synthetic resin adhesive with the operation of the rotating machine. There is no child whose bonding strength is impaired.
- each magnet unit it is possible to confirm the joining state of the permanent magnet to the pedestal and then attach the valley magnet unit to the rotor body. High reliability.
- An object of the present invention is to provide the above-described manufacturing method capable of improving the productivity and yield of the rotating machine rotor.
- a manufacturing method is provided.
- each magnet unit is mounted on the rotor body via the pedestal, there is a high degree of freedom in the choice of mounting means.For example, if there is a tie, welding, screwing, stopping, and tightening It is possible to adopt means such as the above, so that the above-mentioned mounting can be easily performed.
- each magnet unit a method of heating a superimposed material consisting of a permanent magnet, a filler metal, and a pedestal is adopted. It is possible to minimize the occurrence of poor joining by making the condition uniform, thereby improving the magnet unit and, in turn, the yield of the rotor.
- a method in which a number of permanent magnets are directly heated and joined to the outer periphery of the rotor body using a filter medium is adopted.However, since the heat capacity of the rotor body is relatively large, the time required for the joining process is reduced. With the same number of permanent magnets, the cost is about twice that of obtaining a magnet unit, and if one permanent magnet is cracked, the rotor becomes defective and when it is wasted. However, if the magnet unit is manufactured and used, the above problem can be avoided.
- Another object of the present invention is to provide the magnet unit that can avoid the generation of cracks in the permanent magnet due to the rise and fall of the rotor temperature, which is proud of the improvement of the productivity of the rotating machine rotor. I do.
- the pedestal is formed of a pedestal on which a number of copper plates are stacked, and the pedestal is joined to the pedestal through heating with a brazing material ⁇ through a permanent magnet. At least at both ends in the stacking direction of the copper sheet, a magnet unit is provided in which a gap created by heat bonding exists between adjacent rain steel sheets.
- the magnet unit can be easily attached to the rotor main body via the pedestal, thereby improving the productivity of the rotor.
- ⁇ 1 is a cross section I showing the first example of the motor rotor, and is equivalent to a ⁇ 2 1 ⁇ 1 ⁇ cross section
- FIG. 2 is a cross section 0-2 of 2-1
- FIG. 3 is a permanent magnet
- Fig. 6 is a partial cross-sectional view showing the superposition M
- EU to Fig. 6 are explanatory diagrams of the heating joining mechanism in one example
- Fig. 4 is before heating
- Fig. 5 is during heating
- EI 6 is 7 to 9 are explanatory diagrams of the heating bonding mechanism in the comparative example
- FIG. 7 shows before heating, S8 during heating, and 09 after cooling, respectively.
- ⁇ 10 indicates a main part of the Cu—Nd system phase diagram
- 111 is a perspective view showing an example of a combination of permanent magnets, filler metal, and a stack
- 212 is a thermal expansion plate.
- Figure 13 shows the relationship between the permanent magnet, brazing material and the product!
- m 14 is a perspective view of the joined body
- mi 5 is a front view showing a second example of the motor rotor
- FIG. 6 is an enlarged view of the main part, as viewed from the arrow 16--16 in Fig. 15;
- Fig. 17 is a sectional view of the main part 17--17 in Fig. 16;
- Fig. 18 is a partially enlarged view;
- the end face 0, m 19 of the rotor body with a part broken shows how the permanent magnet and the brazing material are superimposed on the rotor body.
- Description, FIG. FIG. 20 shows a diagram before heating, FIG. 21 shows a diagram during heating, FIG. 22 shows a diagram after cooling, and
- FIG. 23 shows a third example of a motor rotor.
- FIG. 24 is a cross-sectional view showing a fourth example of the motor rotor, and FIG. 24 is equivalent to 24-24 cross section 12 of FIG.
- Fig. 25 is a cross-section 0 of Fig. 24, which is 25-25
- Fig. 26 is a perspective view of the magnet unit
- Fig. 27 is a cross-sectional view of the main parts explaining the structure of the magnet unit
- Fig. 28 is Perspective showing how to overlap the permanent magnet and brazing material on the pedestal! ]
- 029 are perspective views showing how to attach the magnet unit to the rotor body.
- the rotor 1 for the motor in the rotating state is a cylindrical rotor body 3, which is formed by stacking a number of circular steel plates 2 of the same number. Peripheral surface and consequently bonded surface 4 through filter material «5 Consisting of The brazing material that forms the filler material 5 generates a liquid phase at a temperature lower than the contact points of the rotor body 3 and the permanent magnet 6.
- the spline hole 9 of the rotor 8 is press-fitted into the spline hole 7 located at the center of the rotor body 3, and the rain opening portion of the spline hole 7 is fixed to the rotor shaft 8 via a weld 10. .
- the valley permanent magnets 6 are superimposed on the joining surface 4 of the rotor body 3 via the 3 ⁇ 4-shaped or thin-plate-shaped filter material 11,
- a heat resistant band 12 is attached to the rotor body 3, and the permanent magnets 6 and the brazing material 11 are fixed to the rotor body 3 by the band 12 to obtain a laminated product.
- a cooling process for obtaining the rotor 1 by joining the permanent magnets 6 and the rotor body 3 via the brazing material layer 5 is adopted.
- the coefficient of thermal expansion of the rotor body 3 is larger than that of each permanent magnet 6.
- the joint surface 4 of the rotor body 3 is formed by a set of small joint surfaces 13 at the end surfaces of the steel plates 2.
- the cooling step is performed, and the steel plates 2 forming the small joint surfaces of the large spread body 14 having a large thermal expansion coefficient are shrunk together with the permanent magnets 6 so that the permanent magnets 6 are joined together.
- ⁇ b is produced between the adjacent rain steel plates 2 ⁇ ⁇ on the side, and as a result, the product;
- the permanent magnet 6 side of the body 14 is restrained to be longer than the length ai before heating, and a 4 ⁇ a!
- the length a 3 of the permanent magnet 6 is reduced because the heat generated in the brazing filler metal 5 is reduced compared to the case where the length a 3 after the order is almost restored to the length a, before heating. Even if the steel is brittle, cracks as shown in Fig. 9 can occur, and it is possible to avoid problems at any time.
- permanent magnets 6 permanent magnets containing rare earth elements such as NdF eB permanent magnets and SmCo permanent magnets are used.
- the brazing material 11 exerts a joining temperature by heating temperature d, that is, d ⁇ 650, which does not affect the magnetic properties of the permanent magnet 6 containing the rare earth element as described above. 'M.
- This bonding force is manifested by its diffusivity when the brazing material 11 is in a solid state under heating, while the brazing material 11 is in a liquid phase or in a solid-liquid coexisting state. In some cases, it is necessary to realize children by their cleanliness.
- an active material composed of a rare earth element alloy is used as the brazing material 11.
- bi- force 1 desired arbitrary body species fraction of amorphous K phase V f ⁇ ⁇ 5 0% ⁇ V f ⁇ 1 0 0% Te Arco.
- the amorphous phase does not have a wide grain boundary, which is the starting point of oxidation, and has remarkable oxidation resistance.There is also a slight mixture of oxides, and furthermore, there is no segregation and the composition is uniform. It is effective in improving the strength of the brazing material layer 5 because of its improved properties.
- the rare earth element is at least one selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. They are used in the form of Mm (misch metal) or Di (jijimium) as a simple substance or a mixture.
- the alloying element AE which performs eutectic reaction with rare earth elements, includes Cu, Al, Ga, Co, Fe, Ag, N i, Au, Mn, Zn, Pd, Sn, Sb, Pb, Bi, Ge and In
- the content of the alloying element AE is set at 5 atomic% ⁇ AE ⁇ 50 atomic%.
- the content of the alloying element AE is set at 5 atomic% ⁇ AE ⁇ 50 atomic%.
- the amount of the alloying element AE is AE> 50 atomic%, the activity of the rare earth elementary alloy is impaired, while AE ⁇ 5 atomic%, the solid-liquid coexistence state It will be difficult to secure the phase.
- Table 1 shows examples of eutectic alloys in rare earth element alloys.
- hypo- and hypereutectic alloys in rare earth element alloys can be used.
- the numerical value of the kaguri position is 'atomic%' (the same applies hereinafter) o
- ternary alloys such as Nd 65 Fe 5 Cu 30 alloy (liquid phase generation temperature: 501 ° C, Fe has a lower eutectic point) and Nd 70 C u 25 a 1 5 alloy (liquidus 3 ⁇ 4 raw temperature 4 7 4) ⁇ Geruko Dogate 'kill.
- the heating temperature d in the heating step varies depending on the composition of the brazing material 11, but the various rare-earth alloys having the above-mentioned compositions have a relatively low heating temperature d, so that the permanent magnet 6 and the liquid state or solid-liquid coexisting state can be obtained. There is no child that changes the characteristics of the rotor body 3
- Rare earth element-based lumber 1 Permanent magnets made of 1 and having a liquid phase of high activity and having a high wettability to adhesives and filter media Demonstrates anxiety for steel plate rotor body 3.
- the permanent magnet 6 and the rotor body 3 can be firmly joined by the use of such brazing material 11.
- the heating time e should be e ⁇ 10 hours, because if it is too long, the properties of the permanent magnet 6 and the rotor body 3 may be affected.
- the points are e ⁇ 1 hour.
- the permanent magnets 6 are magnetized. This is the same in each of the following examples.
- the friction f of each mesh plate 2 is set to 0.1 mm ⁇ f ⁇ 6. Omm.
- f> 6. Omm the thermal power in the cladding layer 5 cannot be sufficiently reduced, so that the permanent magnet 6 is easily cracked c.
- the caulking method 16 is used for joining the steel plates 2.
- the filter material 11 is superimposed on the joint surface 4 of the pile 14 and the permanent magnet 6 is superimposed on the brazing material 11 with the joint surface 17 facing downward.
- the permanent magnets 6 and the stacks 14 and 14 were joined via the brazing material layer 5.
- the permanent magnet 6 did not crack, and both 6 and 14 were firmly connected via the brazing material layer 5. They were joined. This is, as described above, after the heating step; by using the stack 14, the heat generated in the filter material layer 5 in the rejection step is reduced.
- a block 15 made of carbon steel (JISS 35 C) instead of the layered body 14 and having the same dimensions as the stacked body 14 was manufactured.
- the block body 15 and the same permanent magnet 6 were heat-bonded under the same conditions as above using the same filter medium 11.
- FIG. 12 shows the relationship between the thermal expansion coefficient and the thermal expansion coefficient of the permanent magnet 6, the brazing material 11 and the block 15.
- the block 15 has a larger coefficient of thermal expansion in the cooling step than the permanent magnet 6.
- a crack c as shown in ⁇ 9 is generated over the entire permanent magnet 6, and the peripheral portion of the permanent magnet 6 where heat is concentrated is broken. Had become.
- SekiHiroshikarada 1 4 also force having a thermal expansion ⁇ of the block 1 5 bi substantially same ladder: heat i as described above by the product ⁇ , Te of force relaxation effect can be obtained ', the proc body 1 5 The problem with using it is avoided.
- each joint 18 and epoxy resin-based adhesive were used, and 10 joints of each joint were subjected to a '51 tension test at room temperature, and the remaining 10 valleys were subjected to 150 tests.
- a 51-strength test was carried out under the heat of the test / test, and the results in Table 2 were obtained.
- the joint 18 using the brazing filler metal 11 was compared with the joint using the epoxy resin adhesive under the heating at the room temperature and at 150 ° C.
- the bonding strength is high, and the bonding strength hardly changes under both environments, and the variation is small.
- the joint has a low joint strength at room temperature and a large variation, and its joint strength under heating of 150 times is only one third of that at room temperature. descend.
- Permanent magnets 6 containing rare earth elements such as Nd FeB permanent magnets and SmCo permanent magnets, have magnetic properties, especially when the heating temperature d during joining becomes d> 65 ° C.
- the magnetic force and H C tend to decrease.
- the lugi product (BH) max is almost constant.
- the retentivity of the permanent magnet 6 is attributed to the presence of a rare earth element having a high Nd concentration in the crystal grain boundaries, and in this embodiment, a phase having a high Nd concentration.
- the brazing material 11 is in a liquid phase state or a solid-liquid coexistence state, and an Nd 70 Cu 30 alloy containing Nd as a main component, or
- the 'phase produced from the Nd 73 Cu 27 alloy is 3 ⁇ 4active ’and the ⁇ ⁇ phase present in the crystal grain boundaries at the same time as the ⁇ ⁇ phase. Demonstrates excellent cleanliness, and with the above-mentioned high activation, the laminate 14 made of the steel plate 2 and thus the rotor body 3 has extremely good demand.
- the permanent magnet 6 and the rotor body 3 can be firmly joined without damaging the magnetic properties of the permanent magnet 6. This is intended to enable the realization of a high-speed rotation motor with a rotation speed of 10,000 rpm or more.
- the motor rotor 1 is composed of a number of circular plates 2 of different numbers, and is composed of a laminated cylindrical rotor body 3 and the like. It is made up of a number of permanent magnets 6 joined through the material ⁇ 11.
- the spline hole 9 of the rotor 8 is press-fitted into the spline hole 7 located at the center of the rotor body 3, and the rain opening of the spline hole 7 is welded to the rotor 8 via a weld (not shown). Is fixed.
- the permanent magnets 6 extend in the direction of the generatrix on the outer peripheral surface of the rotor body 3 and are spaced between the rain permanent magnets 6 that are adjacent to each other.
- the rotor body 3 is connected to each arm 21 such as a boss 20 having a spline hole 7 and a plurality of arms 21 extending in a radial manner from the outer peripheral surface of the boss.
- a plurality of joining grooves 23 extending in the generatrix direction of the outer peripheral surface are formed in the rim portion 22, and each permanent magnet 6 brazing filler metal 5 is formed on the & surface of each joining groove 23, and thus on the joining surface 4.
- each steel plate 2 is connected to the rotor body 3 through In the rim forming region h of each steel plate 2, a notch-shaped concave portion 24 forming a joining groove 23 is provided.On both sides of each permanent magnet joint j, a radially intermediate portion from the outer peripheral surface of the region h. In addition, a slit 25 that extends is formed. In this case, one slit 25 exists between the adjacent rain permanent magnet joints j, and each slit 25 of each plate 2 is aligned with the outer peripheral surface of the rotor body 3 in the direction of the base. I have.
- each permanent magnet joint j of the steel plate 2 of the number of the rotors has slits 25 on both sides thereof. Downward, due to the bending of the rotor body 3 outward, ⁇ b exists between the rain permanent magnet joints j adjacent to each other in the direction of the axis k.
- the permanent magnet 6 is joined to the rotor body 3 via the brazing material 5, so that the rotor temperature decreases the joining strength of the synthetic resin adhesive with the operation of the motor. For example, even if it rises to 100, the joint strength of each permanent magnet 6 does not deteriorate.
- a gap b may be formed between all adjacent permanent magnet joints j due to the direction in which the permanent magnets are bent toward each other, that is, the outer side of the rotor body 3.
- each slit 25 of each steel plate 2 spreads when the rotor shaft 8 is pressed into the spline of the boss portion 20; Conduct ⁇ .
- the permanent magnet 6 a permanent magnet containing a rare earth element such as NdFeB permanent magnet is used.
- the filler material 11 a highly active material composed of a rare earth element-based alloy similar to that described above is used.
- the steel plate 2 is moved to the rain side of each permanent magnet joint j having the notch-shaped concave portion 2, and inward from the outer peripheral surface.
- the rotor main body 3 is formed by laminating a plurality of slits 25 extending to a radially intermediate portion.
- each permanent magnet 6 is joined to the rotor body 3.
- ⁇ 20 to 22 indicate the heat bonding mechanism.
- the lengths aj of the rotor body 3 and the permanent magnet 6 are equal.
- Figure 2 1 of the rotor the body 3 and the permanent magnet 6 is expanded in a heated, for example the thickness f 2 of each steel plate 2 is ⁇ becomes (2> than ft before heating: ⁇ ), were each length of a 2 it before heating a permanent magnet 6, ⁇ consisting of (a 2> length than a!).
- the heating time e in the joining process is desirably e ⁇ 10 hours for the same reason as described above, and the main point of productivity improvement is e ⁇ 1 hour.
- the number of the notch-shaped recesses 2 is 12, the number of slits 25 is 12, and the dimensions of each slit 25 are 0.3 mm in width.
- a 10 mm long and 0.4 mm thick cold rolled steel plate 2 was prepared.
- the outer diameter is 13.6 mm
- the length is 100 mm
- the number of the joining grooves 23 is 12, and the dimensions of each joining groove 23 are 20 mm in width, 1 mm in depth, and 10 in length. 0 mm.
- the permanent magnet 6 has a length of 100 mm, ⁇ 20 mm, and a thickness of 6 mm.
- F e B permanent magnets made of Sumitomo Special Metals Earth, trade name: NEO MAX-28 UH, KYURI one point 310 V).
- the rotor 1 was placed in a heating furnace, heated 150 hours, heated for 1 hour, and then cooled down under the room. The birth of no longer.
- ⁇ 23 shows another example of the rotor 1.
- the rotor body 3 includes a boss portion 20, a return arm portion 21 extending from the outer peripheral surface of the boss portion 20 in an effective manner, and a rim portion 22 connected to each arm portion 21.
- the two adjacent slits 25 are formed in the rim portion forming region h of the steel plate 2, the beam portion forming region q, and in the rim portion forming region h, from the outer peripheral surface to the inner peripheral surface so as to include any connecting portion r. It extends.
- each permanent magnet joint j of each steel plate 2 is bent more than the fold n at each of the narrow continuous portions r, so that it is easier to bend than the one shown in FIG. The formation is easy.
- the motor rotor 1 has a cylindrical rotor body 3 which is formed by stacking a circular circular steel plate 2 of a recovery shape. It has 26 magnet units.
- the spline hole 9 of the rotor shaft 8 is press-fitted into the spline hole 7 located at the center of the rotor body 3, and the two opening portions of the spline hole 7 are respectively connected to the mouth 8 by welding portions 10. It is fixed.
- the rotor body 3 is provided with a spline hole 7, a boss portion 20, a purging arm portion 21 extending radially from an outer peripheral surface of the boss portion 20, and a rib connected to each arm portion 21. It consists of two parts.
- the rim portion 22 is formed with a groove 27 having a number of extensions extending in the generatrix direction on the outer peripheral surface thereof.
- each magnet unit 26 has a pedestal 28 with a cross-section, and is connected to the joint surface 4 on the short parallel side of the pedestal 28 via a brazing material 5 under heating. Composed of 6 permanent magnets.
- Each magnet unit 26 is attached to the rotor main body 3 with its pedestal 28 fitted into the dovetail groove 27 of the rotor main body 3.
- the joining method of the filter material is used for joining the permanent magnets 6 to each other, so the joining strength of each permanent magnet 6 is high, and the rotor temperature is combined with the operation of the motor. Even if the bonding strength of the resin adhesive is reduced, for example, to 100 ° C., the bonding strength of each permanent magnet 6 is not reduced.
- each magnet unit 26 After confirming the joining state of the permanent magnet 6 to the pedestal 28 in each magnet unit 26, the supporting force of each magnet unit 26 to the rotor body 3 should be adjusted. If possible, the joint structure of each permanent magnet 6 in the rotor 1 has high reliability.
- the pedestal 28 is formed by stacking a number of bent steel plates 29.
- a fastening means 16 is employed for joining the steel sheets 29.
- each of the rain plates 29 extends over the entire length in the direction s of the plate stacking direction s, in the illustrated example, over the entire length in the direction s. Produced by heating and bonding.
- the joint surface 17 of the permanent magnet 6 and the joint surface 4 on the short parallel side of the pedestal 28 4 In the process of obtaining a plurality of superimposed materials by interposing the brazing material 11, the superimposed materials are set in a vacuum heating furnace S, and under heating, the brazing material 11 is, for example, in a 3 ⁇ 4 phase state, which is solid-liquid.
- the brazing material 11 In the process of obtaining a small number of magnet units 26 in which coexisting permanent magnets 6 pedestals 28 and 28 are joined via brazing material S5, as shown in FIG. A process of fitting the pedestal 28 of each magnet unit 26 to each existing groove 27 and attaching each magnet unit 26 to the rotor body 3 is used.
- each pedestal 28 since the heat capacity of each pedestal 28 is relatively small in the manufacture of each magnet unit 26, the heating temperature required for bonding 5 Cooling can be performed in a relatively short time, which shortens the time required for bonding.
- each magnet unit 26 is attached to the rotor body 3 via the pedestal 28, the degree of freedom of the mounting procedure is high ⁇ , as described above (pedestal 28) — ⁇ In addition to the fitting by groove 27, it is possible to use welding, screwing, crimping, etc. There is. Thus, each magnet unit 26 and its pedestal 28 provide a rotor body.
- each magnet unit 26 when heating the superimposed material consisting of the permanent magnet 6, the filler material 1 and the pedestal 28, it is necessary to use a hand.
- the heating state is made uniform to minimize the occurrence of poor joints, thereby improving the yield of the stone unit 26 and thus the rotor 1.
- the ⁇ thermal bonding mechanism is the same as in the case of Examples 1 and 4 to 6, so that the heat i generated in the brazing material 5 and the force are alleviated, so that it is permanent. Even if the magnet 6 is brittle, it can be cracked and work around it.
- the permanent magnet 6 a magnet containing a rare earth element such as an NdFeB-based permanent magnet is used.
- a brazing material 11 a high-activity brazing alloy composed of a rare-earth element-based alloy as described above is used.
- the heating time e in the joining process of the magnet unit 26 is desirably e ⁇ 10 hours for the same reason as above, and the parent point of productivity improvement is e ⁇ 1 hour.
- the following is a specific example of manufacturing rotor 1. Explain.
- Pedestal 28 Then, as shown in Fig. 28, a 0.4-thick dovetail shape; inter-rolled steel sheet 2
- each permanent magnet 6 After heating for 1 hour and then cooling at room temperature, each permanent magnet 6 is not cracked.
- the rotor body 3 and the permanent magnets 6 of the rotor body 3 are all swallowed even if the rotor 1 is rotated at a high speed above 1000 rpm.
- the rotor body 3 may be a manufactured product or a mechanical product such as a steel block.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95934295A EP0786854B1 (en) | 1994-10-14 | 1995-10-13 | Rotor for rotating machine, method of manufacturing same, and magnet unit |
DE69510363T DE69510363T2 (de) | 1994-10-14 | 1995-10-13 | Rotor für rotierende maschine, verfahren zu seiner herstellung und magneteinheit |
US08/835,672 US6081052A (en) | 1994-10-14 | 1997-04-10 | Rotor for rotating machine, process for producing the same, and magnet unit |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24980294A JP3373950B2 (ja) | 1994-10-14 | 1994-10-14 | 熱膨脹率を異にする二種の部材の加熱接合方法 |
JP6/249802 | 1994-10-14 | ||
JP7/86594 | 1995-04-12 | ||
JP08659495A JP3535256B2 (ja) | 1995-04-12 | 1995-04-12 | 回転機用ロータおよびその製造方法 |
JP7/153562 | 1995-06-20 | ||
JP15356295A JP3631808B2 (ja) | 1995-06-20 | 1995-06-20 | 回転機用ロータ、そのロータの製造方法および磁石ユニット |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/835,672 Continuation US6081052A (en) | 1994-10-14 | 1997-04-10 | Rotor for rotating machine, process for producing the same, and magnet unit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996012336A1 true WO1996012336A1 (fr) | 1996-04-25 |
Family
ID=27305201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/002102 WO1996012336A1 (fr) | 1994-10-14 | 1995-10-13 | Rotor pour machine rotative, son procede de fabrication et unite a aimant |
Country Status (4)
Country | Link |
---|---|
US (1) | US6081052A (ja) |
EP (1) | EP0786854B1 (ja) |
DE (1) | DE69510363T2 (ja) |
WO (1) | WO1996012336A1 (ja) |
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DE102013220562A1 (de) * | 2013-10-11 | 2015-04-16 | Robert Bosch Gmbh | Baugruppe für eine elektrische Maschine, Verfahren zur Herstellung einer Baugruppe und elektrische Maschine mit einer Baugruppe |
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CN103878539B (zh) * | 2014-04-24 | 2016-04-06 | 洛阳轴研科技股份有限公司 | 一种特高速电主轴鼠笼转子的精加工方法 |
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EP3417529A1 (en) | 2016-02-19 | 2018-12-26 | Moog Inc. | Rotor assembly of an electric motor |
DE102020005530A1 (de) | 2020-09-10 | 2022-03-10 | Daimler Ag | Verfahren zum Herstellen eines Rotors für eine elektrische Maschine mit axialer Fixierung eines Blechpakets durch Reibschweißen sowie Rotor |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5759462A (en) * | 1980-09-24 | 1982-04-09 | Meidensha Electric Mfg Co Ltd | Assembling method for rotary electric machine |
JPH01274653A (ja) * | 1988-04-25 | 1989-11-02 | Matsushita Electric Works Ltd | 内転型回転子 |
JPH0311950A (ja) * | 1989-06-07 | 1991-01-21 | Isuzu Motors Ltd | 回転電機の回転子 |
JPH0387338A (ja) * | 1989-08-31 | 1991-04-12 | Takeshi Masumoto | 希土類金属基合金箔又は希土類金属基合金細線及びその製造方法 |
JPH05182823A (ja) * | 1991-10-31 | 1993-07-23 | Isuzu Motors Ltd | 永久磁石 |
JPH0630829B2 (ja) * | 1983-08-16 | 1994-04-27 | 株式会社東芝 | 活性金属ろう材 |
JPH07184335A (ja) * | 1993-12-22 | 1995-07-21 | Sumitomo Heavy Ind Ltd | モータの回転子 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4472651A (en) * | 1983-09-22 | 1984-09-18 | General Electric Company | Permanent magnet rotor |
DE3943237A1 (de) * | 1989-12-22 | 1991-06-27 | Siemens Ag | Permanentmagneterregte elektrische maschine, insbesondere hoher drehzahl |
JPH04101640A (ja) * | 1990-08-17 | 1992-04-03 | Mitsubishi Electric Corp | 永久磁石回転機の回転子 |
IT1245838B (it) * | 1990-11-15 | 1994-10-24 | Getters Spa | Motore elettrico senza spazzole e rotore relativo. |
DE4136691A1 (de) * | 1991-11-07 | 1993-05-13 | Siemens Ag | Elektrische maschine mit einem permanentmagneterregten laeufer |
US5397951A (en) * | 1991-11-29 | 1995-03-14 | Fanuc Ltd. | Rotor for a synchronous rotary machine |
JPH0847192A (ja) * | 1994-04-05 | 1996-02-16 | Emerson Electric Co | 電動発電機 |
EP0678967A1 (en) * | 1994-04-18 | 1995-10-25 | General Electric Company | Rotor for permanent magnet motor |
-
1995
- 1995-10-13 DE DE69510363T patent/DE69510363T2/de not_active Expired - Fee Related
- 1995-10-13 EP EP95934295A patent/EP0786854B1/en not_active Expired - Lifetime
- 1995-10-13 WO PCT/JP1995/002102 patent/WO1996012336A1/ja active IP Right Grant
-
1997
- 1997-04-10 US US08/835,672 patent/US6081052A/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5759462A (en) * | 1980-09-24 | 1982-04-09 | Meidensha Electric Mfg Co Ltd | Assembling method for rotary electric machine |
JPH0630829B2 (ja) * | 1983-08-16 | 1994-04-27 | 株式会社東芝 | 活性金属ろう材 |
JPH01274653A (ja) * | 1988-04-25 | 1989-11-02 | Matsushita Electric Works Ltd | 内転型回転子 |
JPH0311950A (ja) * | 1989-06-07 | 1991-01-21 | Isuzu Motors Ltd | 回転電機の回転子 |
JPH0387338A (ja) * | 1989-08-31 | 1991-04-12 | Takeshi Masumoto | 希土類金属基合金箔又は希土類金属基合金細線及びその製造方法 |
JPH05182823A (ja) * | 1991-10-31 | 1993-07-23 | Isuzu Motors Ltd | 永久磁石 |
JPH07184335A (ja) * | 1993-12-22 | 1995-07-21 | Sumitomo Heavy Ind Ltd | モータの回転子 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0786854A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007098990A1 (de) * | 2006-02-28 | 2007-09-07 | BSH Bosch und Siemens Hausgeräte GmbH | Linearantrieb mit reduzierter axialer kraftkomponente sowie linearverdichter und kältegerät |
Also Published As
Publication number | Publication date |
---|---|
EP0786854A1 (en) | 1997-07-30 |
EP0786854B1 (en) | 1999-06-16 |
EP0786854A4 (en) | 1998-02-11 |
US6081052A (en) | 2000-06-27 |
DE69510363T2 (de) | 1999-10-14 |
DE69510363D1 (de) | 1999-07-22 |
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