WO2013015047A1 - 界磁極用磁石体の製造装置およびその製造方法 - Google Patents
界磁極用磁石体の製造装置およびその製造方法 Download PDFInfo
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- WO2013015047A1 WO2013015047A1 PCT/JP2012/065769 JP2012065769W WO2013015047A1 WO 2013015047 A1 WO2013015047 A1 WO 2013015047A1 JP 2012065769 W JP2012065769 W JP 2012065769W WO 2013015047 A1 WO2013015047 A1 WO 2013015047A1
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- magnet body
- cleaving
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- pair
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0082—Dust eliminating means; Mould or press ram cleaning means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/002—Precutting and tensioning or breaking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
- B28D1/222—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising by pressing, e.g. presses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/02—Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B13/00—Methods of pressing not special to the use of presses of any one of the preceding main groups
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
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- 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 an apparatus for manufacturing a field pole magnet body disposed in a rotor core of a permanent magnet embedded rotary electric machine and a method for manufacturing the same.
- a technique for reducing eddy currents caused by fluctuations in the acting magnetic field is known by cleaving and dividing the field pole magnet body disposed in the rotor core of the permanent magnet embedded rotary electric machine to reduce its surface area. ing. This suppresses heat generation of the field pole magnet body due to eddy current and prevents irreversible thermal demagnetization (see JP2009-148201A).
- a field pole magnet body in which a notch serving as a guide for cleaving is provided in advance, is inserted into a resin-filled container having the same dimension and shape as the rotor slot. .
- the field pole magnet body is cleaved into magnet pieces in the container, and the resin is infiltrated between the magnet pieces at the same time as the cleaving.
- the accuracy of the cleaved surface may deteriorate due to abnormal cracks in which the cleaved surface of the magnet piece deviates from the planned cutting surface or becomes bifurcated. It is presumed that this occurs when the pair of lower mold support parts or the upper mold blade hit the field pole magnet body at the time of cleaving.
- the pair of support portions of the blade or the lower die hits the field pole magnet body, a fine powder generated during cleaving between the pair of lower mold support portions and the field pole magnet body that is a brittle material It can be estimated that the field pole magnet body is supported by the lower die in a state of being floated by the foreign matter.
- the present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus for manufacturing a field pole magnet body disposed on a rotor core of a rotating electrical machine and a method for manufacturing the same, which are suitable for improving the accuracy of a split section.
- a field pole magnet body manufacturing apparatus manufactures magnet pieces constituting a field pole magnet body disposed in a rotating electrical machine by cleaving the magnet body.
- the field pole magnet body manufacturing apparatus is provided on the opposite side of the support portion with the magnet body between the support portion and the magnet body, and cleaves the magnet body by contacting and pressing the magnet body.
- a cleaving portion and a powder removing portion for removing crushed powder generated by cleaving the magnet body are provided.
- FIG. 1 is a schematic configuration diagram illustrating a configuration of a main part of a permanent magnet type electric motor to which a magnet body manufactured by a field pole magnet body manufacturing apparatus according to the present embodiment is applied.
- FIG. 2 is a configuration diagram showing the configuration of the magnet body.
- FIG. 3 is a schematic configuration diagram of a field pole magnet body manufacturing apparatus according to the first embodiment.
- FIG. 4 is an enlarged view of a main part of the field pole magnet body manufacturing apparatus shown in FIG.
- FIG. 5 is a cross-sectional view showing the configuration of the elevating member.
- FIG. 6 is a diagram showing a modified structure example of the lower mold protrusion.
- FIG. 7 is a diagram illustrating another modified structure example of the lower protrusion.
- FIG. 1 is a schematic configuration diagram illustrating a configuration of a main part of a permanent magnet type electric motor to which a magnet body manufactured by a field pole magnet body manufacturing apparatus according to the present embodiment is applied.
- FIG. 2 is a configuration diagram showing the
- FIG. 8 is a schematic configuration diagram of an apparatus for manufacturing a field pole magnet body according to the second embodiment.
- FIG. 9 is a schematic configuration diagram of an apparatus for manufacturing a field pole magnet body according to the third embodiment.
- FIG. 10 is a schematic configuration diagram of a field pole magnet body manufacturing apparatus according to the fourth embodiment.
- FIG. 11 is a schematic block diagram of the manufacturing apparatus of the magnetic body for field poles which does not have one side of a pair of protrusion part.
- FIG. 12 is an explanatory diagram for explaining an abnormal cracking state when the magnet body is cleaved.
- FIG. 1 is a schematic configuration diagram illustrating a configuration of a main part of a permanent magnet type electric motor to which a magnet body manufactured by a field pole magnet body manufacturing apparatus according to the present embodiment is applied.
- the left diagram is a cross-sectional view of a permanent magnet motor
- the right diagram is a side view.
- a permanent magnet embedded type rotary electric machine A (hereinafter, simply referred to as “rotary electric machine”) is arranged in a ring-shaped stator 10 that constitutes a part of a casing (not shown), and coaxially arranged with the stator 10.
- a cylindrical rotor 20 is arranged in a ring-shaped stator 10 that constitutes a part of a casing (not shown), and coaxially arranged with the stator 10.
- the stator 10 includes a stator core 11 and a plurality of coils 12.
- the plurality of coils 12 are accommodated in slots 13 formed at equal angular intervals on the same circumference around the axis O in the stator core 11.
- the rotor 20 includes a rotor core 21, a rotating shaft 23 that rotates integrally with the rotor core 21, and a plurality of field pole magnet bodies 30.
- the plurality of field pole magnet bodies 30 are accommodated in slots 22 formed at equal angular intervals on the same circumference around the axis O.
- the field pole magnet body 30 housed in the slot 22 of the rotor 20 is configured as an assembly of a plurality of magnet pieces 31 obtained by cleaving and dividing the field pole magnet body 30 as shown in FIG. More specifically, the field pole magnet body 30 is configured as an aggregate of magnet pieces 31 aligned in a line by bonding the split sections of a plurality of magnet pieces 31 with a resin 32.
- a resin 32 having a heat resistance of about 200 ° C. is used, and the adjacent magnet pieces 31 are electrically insulated from each other.
- a notch groove 33 in advance in a portion (scheduled planned surface) of the field pole magnet body 30 to be cleaved.
- the field pole magnet body 30 in which the notch groove 33 is formed will be described, but the notch groove 33 is not indispensable. In other words, if the cleaving can be performed without providing the notch groove 33, the notch groove 33 may not be provided in the field pole magnet body 30. As the notch groove 33 is deeper from the surface and the sharpness of the tip of the notch groove 33 is sharper, the flatness of the cut section when cleaved as the magnet piece 31 is improved.
- a method of forming the notch groove 33 As a method of forming the notch groove 33, a method of providing in the forming step of the field pole magnet body 30 by a groove forming protrusion provided in the forming die of the field pole magnet body 30, a method of machining such as a dicer, There is a method using laser beam irradiation.
- FIG. 3 is a schematic configuration diagram illustrating a magnet body cleaving apparatus that is a field pole magnet body manufacturing apparatus according to the first embodiment
- FIG. 4 is an enlarged view of a main part of the magnet cleaving apparatus.
- a magnet cleaving device 40 of a field pole magnet body (hereinafter simply referred to as “magnet body”) 30 cleaves the magnet body 30 into a plurality of magnet pieces 31, and a lower mold 50 that supports and guides the magnet body 30.
- an upper mold 60 that is cleaved by pressing the blade 61 against the positioned magnet body 30.
- the magnet cleaving device 40 suctions and discharges a positioning device 70 that sequentially moves the magnet body 30 supported by the lower mold 50 and positions the magnet body 30 at the cleaving position, and crushed powder (also referred to as contamination) generated at the cleaving.
- a suction device 80 suctions and discharges a positioning device 70 that sequentially moves the magnet body 30 supported by the lower mold 50 and positions the magnet body 30 at the cleaving position, and crushed powder (also referred to as contamination) generated at the cleaving.
- a suction device 80 A suction device 80.
- the lower mold 50 that supports and guides the magnet body 30 includes a plurality of protrusions 51 on the upper surface, and supports the magnet body 30 from below on the upper surface of the protrusion 51.
- the lower die 50 includes a through hole 52 that opens downward at a position corresponding to the blade 61 of the upper die 60, and the suction device 80 is provided in the through hole 52.
- the upper mold 60 includes a blade 61 for cleaving the positioned magnet body 30 and a magnet jump prevention clamp 62 that suppresses the magnet body 30 from jumping up when cleaving.
- the blade 61 is provided with a sharp cutting edge facing the magnet body 30 arranged in the width direction of the magnet body 30, and is lowered by the upper mold 60, thereby pushing the cutting edge while bringing the cutting edge into contact with the planned cutting surface of the magnet body 30.
- the magnet body 30 is cut by lowering and bending by a three-point bend between the pair of protrusions 51 before and after the through hole 52 of the lower mold 50.
- the magnet jump-up prevention clamp 62 is formed by a leaf spring whose base is fixed to the upper die 60, and presses the magnet body 30 against the lower die 50 by its spring action, thereby cleaving the magnet body 30 (particularly the magnet on the tip side). It suppresses that the piece 31) jumps up.
- the positioning device 70 includes a pusher 71 that contacts the rear end of the magnet body 30 and presses the magnet body 30, and a holder 72 that contacts the front end of the magnet body 30 and holds the magnet body 30.
- the pusher 71 includes a servo motor that pushes out the magnet body 30, and repeats the operation of pushing out the magnet body 30 by one pitch of a predetermined length set by the notch groove 33 every time the cleaving operation is executed. Thereby, the planned cutting surface of the magnet body 30 is sequentially positioned.
- the holder 72 comes into contact with the front end of the magnet body 30 to apply a braking force to the magnet body 30, and the moving amount of the magnet body 30 pushed out by the pusher 71 is exceeded.
- the movement of the magnet body 30 is suppressed and the positioning accuracy of the magnet body 30 is improved. For this reason, when the magnet body 30 is cleaved, the holder 72 releases the contact with the front end of the magnet body 30 to allow the movement of the front end side magnet piece 31 cleaved from the magnet body 30.
- the pusher 71 is provided with a blowout nozzle 91 as a downward cleaning means toward the lower mold 50.
- the blowout nozzle 91 blows out air supplied from the air supply source 92.
- the air blown from the nozzle 91 acts to blow out crushed powder (also referred to as contamination) accumulated on the upper surface of the protrusion 51 of the lower mold 50 that supports the magnet body 30 to the outside of the mold.
- FIG. 5 is an enlarged view of a part of the suction device 80.
- the suction device 80 includes an elevating member 81 that is inserted into the through hole 52 of the lower mold 50 so as to be movable up and down.
- the elevating member 81 is urged to move upward by an elastic body 82 such as a spring arranged at the lower portion, and the upper end surface of the lower die 50 is engaged by the hook portion provided at the lower portion engaging the lower die 50.
- the protrusion 51 is positioned at an initial position that is substantially the same height as the upper surface of the protrusion 51. In the initial position of the elevating member 81, the upper surface faces the lower surface of the magnet body 30 with contact or a slight gap.
- the magnet body 30 when the magnet body 30 is cleaved, the magnet body 30 is pushed down by the blade 61 and descends. Therefore, the elevating member 81 is also pushed down against the elastic body 82 by the lower end of the cleaved portion of the magnet body 30. Descend. Then, the blade 61 is raised by the end of the cleaving, and as the cleaving portion of the magnet body 30 is raised and returned, the elastic body 82 rises and returns to the initial position, and the cleaved magnet piece 31 is replaced with the protrusion 51 of the upper die 60. Push back up.
- the elevating member 81 includes a suction nozzle 83 made up of a plurality of openings penetrating in the vertical direction.
- a piping hose 84 is connected to these openings and is connected to a suction machine 85 via the piping hose 84.
- the suction nozzle 83, the piping hose 84, and the suction machine 85 constitute a suction device 80.
- the suction device 80 sucks the pulverized powder that is generated when the magnet body 30 is cleaved and is deposited or scattered on the upper part of the elevating member 81 from the upper part of the opening to the outside of the mold. Acts to drain.
- the magnet body 30 is placed on the protrusion 51 of the lower mold 50, and the first cleaving plane of the magnet body 30 by the pusher 71 and the holder 72 of the positioning device 70. Is positioned between the elevating member 81 and the blade 61 of the upper mold 60.
- the contact of the holder 72 with the magnet body 30 is released, and then the upper mold 60 is lowered.
- the magnet jump-up prevention clamp 62 provided on the upper mold 60 comes into contact with the upper surface of the magnet body 30 and elastically presses the magnet body 30 against the protrusion 51 of the lower mold 50 to move the magnet body 30. Do not hold.
- the tip (lower end) of the blade 61 comes into contact with the planned cutting surface of the magnet body 30, and the gap between the pair of protrusions 51 before and after the through hole 52 of the lower mold 50 is 3.
- the magnet body 30 is cleaved by being pushed down by point bending.
- the elevating member 81 is pushed down by the lower end of the cleaved portion of the magnet body 30 that is lowered by the blade 61 and descends against the elastic body 82. At the same time, the magnet body 30 is prevented from jumping up by the magnet jump-up prevention clamp 62.
- crushed powder generated when the magnet body 30 is cleaved is sucked into the opening together with the air from the opening of the suction nozzle 83 without being deposited or scattered on the lifting member 81 and discharged. For this reason, it is suppressed that crushed powder adheres to the upper surface of the protrusion 51 of the lower mold 50 and the lower surface of the magnet body 30.
- the crushed powder generated when the magnet body 30 is cleaved adheres to and accumulates on the upper surface of the protrusion 51 of the lower mold 50, so that it is caught between the magnet body 30 and the lower mold 50.
- the magnet body 30 is not supported in a state where it floats from the protrusion 51. If the pulverized powder is caught between the protrusion 51 of the lower mold 50 and the magnet body 30, and the magnet body 30 is lifted from the protrusion 51 of the lower mold 50 as shown in FIG. In the case of being supported, abnormal cracks occur when the magnet body 30 is cleaved due to foreign matter as crushed powder.
- an abnormal tension 2 is also generated in the width direction of the magnet body 30 by the foreign object.
- the abnormal tension 2 generates an action of bending the magnet body 30 along the longitudinal direction, and as shown by a broken line in the figure, the magnet body 30 is also cleaved in the longitudinal direction, and the magnet body 30 is abnormally cracked. As a result, the surface accuracy of the cut section is reduced.
- the size of the crushed powder (contamination) that causes the magnet body 30 to be supported and floats abnormally in the magnet body 30 in a state of floating from the protrusion 51 of the lower mold 50 is 20 ⁇ m or more.
- the crushed powder is sucked into the opening together with air from the opening of the suction nozzle 83 of the elevating member 81 and discharged, and adheres to the upper surface of the protrusion 51 of the lower mold 50. Or deposit. For this reason, the crushed powder is not caught between the magnet body 30 and the magnet body 30 is not supported in a state where it floats from the protrusion 51 of the lower mold 50. For this reason, generation
- the blade 61 After cutting, the blade 61 is raised together with the upper mold 60, and as the cleaved portion of the magnet body 30 rises and returns, the elevating member 81 also rises and returns to the initial position by the elastic body 82, and pushes back the cleaved magnet piece 31.
- the magnet jumping prevention clamp 62 provided in the upper die 60 also releases the contact with the upper surface of the magnet body 30 and releases the holding of the magnet body 30.
- the magnet piece 31 at the tip that is cleaved from the magnet body 30 is conveyed by a conveying device (not shown) in the next step, is aligned in the cleaving order, and is bonded and integrated through an adhesive.
- the pusher 71 of the positioning device 70 pushes the magnet body 30 by one pitch, and the holder 72 contacts the front end of the magnet body 30 to apply a braking force to the magnet body 30, so that the magnet body 30 is next cleaved.
- the planned surface is positioned between the elevating member 81 and the blade 61 of the upper mold 60.
- the air nozzle 91 serving as a cleaning means provided in the pusher 71 of the positioning device 70 blows air onto the upper surface of the protruding portion 51 that is exposed upward when the magnet body 30 is fed.
- the exposed upper surface of the protruding ridge 51 is cleaned to prevent the crushed powder from adhering and accumulating.
- the above magnet body cleaving apparatus has a configuration in which the suction nozzle 83 of the elevating member 81 is disposed between the pair of protrusions 51 of the lower mold 50 where the cleaving operation of the magnet body 30 is executed. For this reason, the crushed powder (contamination) generated when the magnet body 30 is cleaved can be sucked and discharged by the suction nozzle 83. Therefore, it is possible to suppress the crushed powder from adhering to the upper surface of the protrusion 51 of the lower mold 50 and the lower surface of the magnet body 30.
- the elevating member 81 including the suction nozzle 83 is lowered in synchronization with the lowering of the fractured surface due to the cleaving of the magnet body 30, so that the magnet body 30, particularly the fractured surface is damaged or damaged. Can be prevented. Further, since the lifting member 81 is present at the cleaving portion, it is possible to prevent the cleaved magnet piece 31 from falling between the pair of protrusions 51.
- FIGS. 6 and 7 are diagrams showing examples of deformation structures of the protrusion 51 of the lower mold 50, respectively.
- 6 and 7 show a shape in which the upper end shape of the ridge 51 that contacts the magnet body 30 of the lower mold 50 is changed from a planar shape to a convex shape, and is linearly contacted in the width direction of the magnet body 30. .
- the tip portion is formed into a convex shape 53 having a mountain-shaped cross section, thereby making line contact in the width direction of the magnet body 30.
- the protrusion part 51 shown in FIG. 7 it forms a line contact in the width direction of the magnet body 30 by forming the front-end
- the contact between the magnet body 30 and the protrusion 51 of the lower mold 50 is not a surface contact but a line contact. it can.
- the amount of crushed powder (contamination) intervening between the contact surfaces can be reduced, and the magnet body 30 can be stably supported and can be more straightened. It becomes possible to do.
- the positioning of the magnet body 30 in the longitudinal direction is not performed as “center alignment” in which the planned cutting surface is positioned at the center position between the protrusions 51 arranged in front and back of the magnet body 30.
- the cleaving part can be set by “end alignment” that positions the front and rear ends as a reference. For this reason, the freedom degree of a cleaving location can be improved significantly.
- the magnet body 30 is placed on the pair of protrusions 51 disposed in the lower mold 50, and the blade 61 of the upper mold 60 is placed between the pair of protrusions 51.
- the magnet body 30 is cleaved by being lowered toward the upper surface and being brought into contact with the upper portion of the magnet body 30 and pressing.
- This field pole magnet body manufacturing apparatus can be moved up and down between the pair of protrusions 51 of the lower mold 50, the upper end faces the lower surface of the magnet body 30, and the cleaving part descends as the magnet body 30 is cleaved.
- a suction device (suction means) 80 that has a lifting and lowering member 81 that descends along with it and rises at the end of the cleaving and pushes back the cleaving portion, and sucks and discharges crushed powder generated by the cleaving of the magnet body 30 from the upper end opening of the lifting and lowering member 81 Nozzle 83).
- the pulverized powder (contamination) generated at the time of cleaving the magnet body 30 is lowered with the lowering of the cleaving portion accompanying cleaving of the magnet body 30, and is lifted at the end of cleaving and having a lifting member 81 that pushes back the cleaving portion.
- the suction nozzle 83 as means, the crushed powder can be sucked and discharged without leakage following the movement of the cleaved portion, and the crushed powder is applied to the upper surface of the protrusion 51 of the lower mold 50 and the lower surface of the magnet body 30. It can suppress adhering.
- the crushed powder is not caught between the magnet body 30 and the magnet body 30 is not supported in a state of floating from the protrusion 51 of the lower mold 50.
- the occurrence of abnormal cracking of the magnet body 30 can be prevented, and the surface accuracy of the split section can be improved.
- the elevating member 81 is lowered along with the lowering of the fractured surface due to the cleaving of the magnet body 30, thereby preventing damage and damage to the magnet body 30, particularly the fractured surface. it can. Further, since the lifting member 81 is present at the cleaving portion, it is possible to prevent the cleaved magnet piece 31 from falling between the pair of protrusions 51.
- the pair of protrusions 51 of the lower mold 50 are formed in convex shapes 53 and 54 whose tip portions that contact the magnet body 30 have a mountain-shaped cross section. In this way, by forming the tip of the protrusion 51 in the convex shapes 53 and 54, the contact between the magnet body 30 and the protrusion 51 of the lower mold 50 is not a surface contact but a line contact. it can. For this reason, by reducing the contact area between the two, the amount of crushed powder (contamination) intervening between the contact surfaces can be reduced, and the magnet body 30 can be stably supported and can be more straightened. It becomes possible to do.
- the lower mold 50 is supported by the supporting protrusions 51 and the supporting protrusions 51 that are arranged outside the pair of protrusions 51 at predetermined intervals and support the magnet body 30 before cleaving.
- a positioning device (positioning means) 70 that sequentially pushes and positions the distal end side of the magnet body 30 onto the pair of protrusions 51. Further, on the rear end side of the magnet body 30 from which the magnet body 30 has been pushed out by the positioning device 70, a positioning apparatus that cleans the upper surface of the supporting protrusion 51 or the upper surface of the pair of protrusions 51 with the gas blown out.
- An air nozzle 91 is provided as a cleaning means provided in 70.
- the air nozzle 91 blows air onto the upper surface of the protruding ridge 51 exposed to the upper side when the magnet body 30 is sent, and cleans the exposed upper surface of the protruding ridge 51 to obtain a crushed powder. Suppresses adhesion and deposition. For this reason, in the state in which the last cleaved surface of the magnet body 30 is cleaved and the magnet piece 31 is carried out from above the lower mold 50 by the positioning device 70, the upper surface of all the protrusions 51 of the lower mold 50 is removed. The crushed powder is blown away, so that there is no adhesion / deposition.
- FIG. 8 is a schematic block diagram which shows the magnet body cleaving apparatus which is a manufacturing apparatus of the magnetic body for field poles in 2nd Embodiment.
- type through-hole is added to the structure of 1st Embodiment.
- symbol is attached
- the pair of protrusions 51 disposed before and after the through hole 52 of the lower mold 50 that supports the magnet body 30 are vertically penetrated so as to blow out the air. 55 is provided. Then, air is supplied to the air outlet 55 so as to blow out air from the upper surface of the ridge 51. For this reason, an air supply device 57 is connected to the air outlet 55 via a pipe 56.
- Other configurations are the same as those of the first embodiment.
- the air blown out from the air outlet 55 flows between the upper surface of the ridge portion 51 and the lower surface of the magnet body 30 placed on the ridge portion 51, and flows back and forth.
- the crushed powder (contamination) adhering to the part 51 is blown off and discharged out of the mold.
- the suction device 80 attached to the elevating member 81 disposed in the through hole 52 sucks the crushed powder blown to the through hole 52 side and discharges it outside the mold.
- the magnet body 30 can be set as the state which does not have a foreign material between the contact surfaces of the magnet body 30 and a pair of protrusion part 51, can support the magnet body 30 stably in a favorable contact state, and the magnet body 30
- the magnetic body 30 can prevent abnormal cracking at the time of cleaving and can be cleaved straight.
- the upper ends of the pair of protrusions 51 are formed flat and are in surface contact with the magnet body 30, but the second example of the first embodiment (FIGS. 6 and 7).
- the shape of the upper end of the ridge 51 can be formed in the convex shapes 53 and 54 so as to be in line contact with the magnet body 30.
- the pair of protrusions 51 of the lower mold 50 has a gas blown out from the tip portion that contacts the magnet body 30. For this reason, it can be set as the state which does not have a foreign material between the contact surfaces of the magnet body 30 and a pair of protrusion part 51, can support the magnet body 30 stably in a favorable contact state, and the magnet body 30
- the magnetic body 30 can prevent abnormal cracking at the time of cleaving and can be cleaved straight.
- FIG. 9 is a schematic block diagram which shows the magnet body cleaving apparatus which is a manufacturing apparatus of the magnetic body for field poles in 3rd Embodiment.
- the field pole magnet body manufacturing apparatus in the third embodiment is different from the field pole magnet body manufacturing apparatus in the first embodiment in the structure of the suction device 80.
- the suction device 80 is not provided with a lifting member and is fixed to the base 88. Even in this configuration, the suction device 80 can suck the pulverized powder generated when the magnet body 30 is cleaved and discharge it to the outside of the mold.
- FIG. 10 is a schematic block diagram which shows the magnet body cleaving apparatus which is a manufacturing apparatus of the magnetic body for field poles in 4th Embodiment.
- the field pole magnet body manufacturing apparatus in the fourth embodiment is different from the field pole magnet body manufacturing apparatus in the first embodiment in that a blower 100 is provided instead of the suction device 80.
- the blower 100 blows away and removes the crushed powder generated when the magnet body 30 is cleaved by blowing strong air from the blowout port.
- the magnet body 30 is cleaved by three-point bending between the blade 61 of the upper mold 60 and the pair of protrusions 51 of the lower mold 50.
- the magnet body 30 can be cleaved even if it has a structure without one side of the ridges.
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Abstract
Description
図3は、第1実施形態における界磁極用磁石体の製造装置である磁石体割断装置を示す概略構成図であり、図4は、磁石割断装置の要部の拡大図である。界磁極用磁石体(以下では、単に「磁石体」という)30の磁石割断装置40は、磁石体30を複数の磁石片31に割断するものであり、磁石体30を支持案内する下型50と、位置決めされた磁石体30にブレード61を押し当てることで割断する上型60と、からなる金型を備える。また、磁石割断装置40は、下型50に支持された磁石体30を順次移動させて割断位置に位置決めする位置決め装置70と、割断時に発生する破砕粉末(コンタミとも称される)を吸引排出する吸引装置80と、を備える。
図8は、第2実施形態における界磁極用磁石体の製造装置である磁石体割断装置を示す概略構成図である。本実施形態においては、下型の貫通孔の前後に配置された一対の突条部の上面に空気を吹出す構成を第1実施形態の構成に追加したものである。なお、第1実施形態における製造装置と同一の構造には同一符号を付して、その説明を省略ないし簡略化する。
図9は、第3実施形態における界磁極用磁石体の製造装置である磁石体割断装置を示す概略構成図である。第3実施形態における界磁極用磁石体の製造装置が第1実施形態における界磁極用磁石体の製造装置と異なるのは、吸引装置80の構造である。すなわち、本実施形態において、吸引装置80は、昇降部材を備えておらず、土台88に固定されている。この構成においても、吸引装置80は、磁石体30の割断時に発生する破砕粉末を吸引して、金型の外部へ排出することができる。
図10は、第4実施形態における界磁極用磁石体の製造装置である磁石体割断装置を示す概略構成図である。第4実施形態における界磁極用磁石体の製造装置が第1実施形態における界磁極用磁石体の製造装置と異なるのは、吸引装置80の代わりに、ブロワー100が設けられていることである。ブロワー100は、吹き出し口より強力な風を吹き出すことにより、磁石体30の割断時に発生する破砕粉末を吹き飛ばし、除去する。
Claims (9)
- 回転電機に配設される界磁極用磁石体を構成する磁石片を、磁石体を割断して製造する界磁極用磁石体の製造装置であって、
前記磁石体を載置する支持部と、
前記磁石体を挟んで前記支持部と反対側に設けられ、前記磁石体に接触して押圧することにより前記磁石体を割断する割断部と、
前記磁石体の割断により生ずる破砕粉末を除去する粉末除去部と、
を備える界磁極用磁石体の製造装置。 - 請求項1に記載の界磁極用磁石体の製造装置において、
前記支持部は、一対の突条部であり、
前記一対の突条部間において昇降可能に配置され、上端が前記磁石体の下面に臨み、前記磁石体の割断に伴う割断部位の下降に伴って下降すると共に、割断終了時に上昇して割断部位を押し戻す昇降部をさらに備える、界磁極用磁石体の製造装置。 - 請求項2に記載の界磁極用磁石体の製造装置において、
前記一対の突条部は、前記磁石体に接触する先端部が断面山形となる凸形状に形成されている界磁極用磁石体の製造装置。 - 請求項2または請求項3に記載の界磁極用磁石体の製造装置において、
前記一対の突条部は、前記磁石体に接触する先端部より気体が吹出される界磁極用磁石体の製造装置。 - 請求項2から請求項4のいずれか一つに記載の界磁極用磁石体の製造装置において、
前記一対の突条部の外側に所定間隔毎に配列されて割断前の磁石体を支持する支持用突条部と、
前記支持用突条部に支持された磁石体の先端側を前記一対の突条部上に順次押出して位置決めする位置決め部と、
前記位置決め部により磁石体が押出された磁石体の後端側において上方に露出する支持用突条部または前記一対の突条部の上面を、吹出す気体により清掃する清掃部と、
をさらに備える界磁極用磁石体の製造装置。 - 回転電機に配設される界磁極用磁石体を構成する磁石片を、磁石体を割断して製造する界磁極用磁石体の製造方法であって、
前記磁石体を支持部に載置するステップと、
前記磁石体を挟んで前記支持部と反対側から、前記磁石体に接触して押圧することにより前記磁石体を割断するステップと、
前記磁石体の割断により生ずる破砕粉末を除去するステップと、
を含む界磁極用磁石体の製造方法。 - 請求項6に記載の界磁極用磁石体の製造方法において、
前記支持部は一対の突条部であり、
前記下型の一対の突条部間において昇降可能に配置された昇降部材の上端を割断前の磁石体の下面に臨ませるステップと、
前記磁石体の割断に伴う割断部位の下降に伴って前記昇降部材を下降させるステップと、
割断終了時に前記昇降部材を上昇させて割断された磁石体を割断前の位置に押し戻すステップと、
をさらに含む界磁極用磁石体の製造方法。 - 請求項7に記載の界磁極用磁石体の製造方法において、
前記一対の突条部は、磁石体に接触する先端部より気体が吹出されている界磁極用磁石体の製造方法。 - 請求項7または請求項8に記載の界磁極用磁石体の製造方法において、
割断前の磁石体は、前記一対の突条部の外側に所定間隔毎に配列されている支持用突条部によって支持され、
前記支持用突条部に支持された磁石体の先端側を前記一対の突条部上に順次押出して位置決めするステップと、
前記磁石体が押出された磁石体の後端側において上方に露出する支持用突条部または一対の突条部の上面を、吹出す気体により清掃するステップと、
をさらに含む界磁極用磁石体の製造方法。
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AU2012288174B2 (en) | 2015-05-21 |
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CA2842889C (en) | 2017-07-18 |
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US20140144337A1 (en) | 2014-05-29 |
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