WO2023126022A1 - 定位工装及转子叠片装配方法 - Google Patents

定位工装及转子叠片装配方法 Download PDF

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Publication number
WO2023126022A1
WO2023126022A1 PCT/CN2023/078146 CN2023078146W WO2023126022A1 WO 2023126022 A1 WO2023126022 A1 WO 2023126022A1 CN 2023078146 W CN2023078146 W CN 2023078146W WO 2023126022 A1 WO2023126022 A1 WO 2023126022A1
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WIPO (PCT)
Prior art keywords
positioning
pressing
hole
lamination
radial
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PCT/CN2023/078146
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English (en)
French (fr)
Inventor
刘冠斌
沙宏磊
俞天野
洪申平
沈虹
Original Assignee
天津飞旋科技股份有限公司
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Publication of WO2023126022A1 publication Critical patent/WO2023126022A1/zh

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/02—Assembly jigs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same

Definitions

  • the present application relates to the field of magnetic suspension bearings, for example, to a positioning tool and a rotor lamination assembly method.
  • the magnetic suspension bearing rotor is composed of six parts: the sensor lamination pressure ring, the sensor lamination, the magnetic bearing lamination pressure ring, the magnetic bearing lamination, the bottom positioning ring and the rotor mandrel.
  • the lamination positioning sleeve cup plays a role To support the positioning function, put the sensor lamination pressure ring, sensor lamination, magnetic bearing lamination pressure ring, and magnetic bearing lamination into the inner cavity of the lamination positioning sleeve cup in sequence, and press them axially after the placement is completed, and then The sensor lamination pressure ring and the lamination positioning sleeve cup are welded to make them locked and fixed to form a rotor assembly, and then the rotor assembly is heated and fitted to the rotor mandrel, and finally machined, and the outer diameter of the rotor assembly is machined to the desired size. The required size.
  • the laminated positioning sleeve cup is only used in the assembly process, and the finished product will be processed and removed, and this part is a consumable part.
  • the cost of the magnetic levitation motor rotor will also increase in combination, resulting in cost waste.
  • assembly defects are found after the lamination welding of the rotor assembly is completed, such as assembly deviations in the number of laminations, foreign objects or gaps between the laminations, deviations in the order of the laminations and the pressure ring, etc., the welding points need to be repaired. After cutting and readjusting correctly, welding is performed.
  • the process of removing solder joints requires machine tools, which cannot be completed manually, and the lamination positioning sleeve is a thin-walled part. It is easy to damage the accuracy of this part and cause it to be scrapped.
  • the maintenance process is time-consuming and laborious. Resulting in waste of costs and delays in the construction period.
  • the present application provides a positioning tool, which can simplify the lamination assembly of the lamination stack.
  • the present application also provides a method for assembling the rotor laminations, which can simplify the assembly of the laminations and the rotor.
  • the positioning tool provided by the present application includes an expansion assembly and a compression assembly
  • the expansion assembly includes an axial locator and a radial locator, the radial locator can pass through the shaft hole of the stack to be assembled, and the radial locator can align the wall of the shaft hole A radial force is generated, the radial positioning member has an opposite first end and a second end along the axial direction of the stack of laminations, the radial The first end of the positioning member is connected to the axial positioning member;
  • the pressing assembly is configured to detachably cooperate with the lamination stack, the pressing assembly includes a first pressing piece and a second pressing piece oppositely arranged, the first pressing piece includes a first positioning ring, the The first positioning ring is arranged on the axial positioning member, while the radial positioning member is located in the first positioning ring;
  • the lamination group is arranged between the second pressing member and the first positioning ring, and the two ends of the lamination group respectively abut against the second pressing member and the first positioning ring ;
  • the first positioning ring includes a plurality of connecting parts, any two adjacent connecting parts are detachably connected, and all the connecting parts are sequentially connected to form the first positioning ring.
  • the rotor lamination assembly method provided by the present application includes:
  • the radial positioning piece passes through the second assembly hole of the second pressing piece, and connect the second pressing piece and the first pressing piece
  • the compression parts are connected, so that the first compression part and the second compression part produce axial compression on the lamination stack;
  • the compression sleeve abuts against the second compression member, so that one end of the lamination pack abuts against the hub of the rotor;
  • the pressing sleeve, the second pressing piece and the first pressing piece are sequentially removed.
  • Fig. 1 is a schematic structural diagram of a positioning tool provided in an embodiment of the present application
  • Fig. 2 is another structural schematic diagram of the positioning tool provided by the embodiment of the present application.
  • Fig. 3 is a schematic diagram of the third structure of the positioning tool provided by the embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of the first positioning ring provided by the embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a second positioning ring provided by an embodiment of the present application.
  • Figure 6 is a schematic assembly diagram provided by the embodiment of the present application.
  • FIG. 7 is another schematic diagram of assembly provided by the embodiment of the present application.
  • Icons 1. Radial positioning piece; 2. Axial positioning piece; 3. Lamination stack; 4. Second positioning ring; 5. First positioning ring; 6. Petal body; 7. Opening; 8. Positioning cavity; 9. Base; 10. Core; 11. Second assembly hole; 12. Third positioning ring; 13. Locking piece; 14. Pressure rod; 15. First assembly hole; 16. Through hole threaded hole; 17 1. Bottom positioning ring; 18. Magnetic bearing laminations; 19. Magnetic bearing lamination pressure ring; 20. Sensor lamination pressure ring; 21. Second protruding part; 22. Connecting part; 23. First protruding part; 24. First positioning hole; 25. Compression sleeve; 26. Rotor; 27. Sensor lamination; 30. Shaft hole; 101. First end; 102. Second end; 31.
  • First pressing member; 32 the second pressing member; 33, the first groove body; 331, the first groove annulus; 332, the first groove end face; 34, the second groove body; 341, the second groove annulus; 342, the second groove end face ; 311, the first connection hole; 321, the second through hole.
  • Fig. 1 to Fig. 7 it includes an expansion assembly and a compression assembly
  • the expansion assembly includes an axial positioning part 2 and a radial positioning part 1.
  • the radial positioning part 1 can pass through the shaft hole 30 of the laminated stack 3 to be assembled, and the radial positioning part 1 can align the shaft hole of the stacked stack 3.
  • the hole wall of 30 generates a radial force.
  • the radial positioning member 1 has opposite first ends 101 and second ends 102 along the axial direction of the lamination stack 3. The first end 101 of the radial positioning member 1 is connected to the The axial positioning members 2 are connected;
  • the pressing assembly is configured to detachably cooperate with the lamination stack 3, the pressing assembly includes a first pressing piece 31 and a second pressing piece 32 oppositely arranged, and the first pressing piece 31 includes a first A positioning ring 5, the first positioning ring 5 is arranged on the axial positioning member 2, and the radial positioning member 1 is located in the first positioning ring 5;
  • the lamination set 3 is arranged between the second pressing member 32 and the first positioning ring 5, and the two ends of the lamination set 3 are connected to the second pressing member 32 and the first positioning ring 5 respectively.
  • the first positioning ring 5 offsets;
  • the first positioning ring 5 includes a plurality of connecting parts 22 , any two adjacent connecting parts 22 are detachably connected, and all the connecting parts 22 are connected in sequence to form the first positioning ring 5 .
  • the axial positioning part 2 and the radial positioning part 1 cooperate to realize the radial positioning of the lamination stack 3 .
  • the function of the axial positioning member 2 is to support the lamination stack 3 and the radial positioning member 1 .
  • the lamination set 3 includes a plurality of annular laminations stacked in sequence.
  • the lamination set 3 may include a sensor lamination pressure ring 20, a sensor lamination 27, a magnetic bearing lamination pressure ring 19, a magnetic bearing lamination 18 and a bottom positioning ring 17.
  • Each lamination has a shaft hole 30 of the same size, and these laminations are stacked in sequence along the axial direction.
  • each lamination is matched with the adjacent laminations on both sides in such a way that the side end faces are closely fitted to form the lamination set 3, and the shaft holes 30 of the laminations constitute the axis of the lamination set 3. hole 30.
  • the radial positioning part 1 is connected with the axial positioning part 2, the compression assembly is placed on the axial positioning part 2, the lamination group 3 is placed in the compression assembly, and the lamination group 3 is produced by the compression assembly in the axial direction. Squeeze, so that a plurality of laminations in the lamination group 3 maintain a stacked state.
  • the radial positioning member 1 passes through the shaft hole 30 of the lamination group 3, and generates a radial force on the hole wall of the shaft hole 30.
  • the effect of centering is realized through the function of the radial positioning member 1, thereby ensuring the coaxiality between multiple laminations, and the lamination is realized through the action of the expansion assembly.
  • the laminations 18 and the bottom positioning ring 17 are positioned axially and radially, then ring welded to make them locked and fixed to form a rotor assembly, which is fitted onto the rotor 26 as a whole, and finally machined, and the outer diameter of the rotor assembly is processed to the required
  • there is no need to introduce additional lamination positioning cups so it is not necessary to cut the lamination positioning cups after the assembly of the lamination group 3 and the rotor 26 to remove the thin-walled part of the outer diameter.
  • the first positioning ring 5 includes a plurality of connecting parts 22 , and the connecting parts 22 are arc-shaped. When all the connecting parts 22 are connected in sequence, the first positioning ring 5 is formed. After the lamination group 3 is installed, the first positioning ring 5 can be disassembled, and there is no need to remove it by machining.
  • the first positioning ring 5 includes two connecting parts 22 , that is, the connecting parts 22 are in a semi-ring structure.
  • the multiple connecting parts 22 may be fixed by clamps, or by magnetic attraction.
  • the steps of stacking the laminations of the lamination set 3 and cooperating between the lamination set 3 and the rotor 26 may be as follows:
  • the pressing assembly includes a first pressing part 31 and a second pressing part 32, and the first pressing part 31 and the second pressing part 32 are detachably matched;
  • the first pressing member 31 generates an acting force on the axial positioning member 2 along the direction from the second end 102 to the first end 101, and the first pressing member 31 can generate a force on the lamination stack 3 along the direction from the first end 101 to the second end.
  • the first pressing member 31 has a first fitting hole 15
  • the second pressing member 32 has a second fitting hole 11; the first end 101 of the radial positioning member 1 passes through the first The assembly hole 15 , the second end 102 of the radial positioning member 1 passes through the second assembly hole 11 .
  • the first pressing member 31 includes a second positioning ring 4 and a first positioning ring 5, one side end surface of the second positioning ring 4 cooperates with the axial positioning member 2, and the second positioning ring 4 has a first positioning hole 24, the first positioning ring 5 has a first assembly hole 15, the first positioning ring 5 is located in the first positioning hole 24, and along the radial direction In the direction from the first end 101 to the second end 102 of the positioning member 1 , the second positioning ring 4 exerts force on the first positioning ring 5 .
  • a first protrusion 23 is provided on the hole wall of the first positioning hole 24, a second protrusion 21 is provided on the outer ring surface of the first positioning ring 5, and the first protrusion 23 is provided on the outer ring surface of the first positioning ring 5.
  • the protruding portion 23 abuts against the second protruding portion 21 along the axial direction of the lamination stack 3 .
  • the first positioning ring 5 has a first groove body 33, the first groove body 33 is arranged along the circumferential direction of the first assembly hole 15, and the first groove body 33 has a The first groove ring surface 331 that is attached to the outer ring surface of the stack 3, and the first groove end surface 332 that can be attached to the end surface of the lamination stack 3.
  • the first groove body 33 is arranged at the end face of the first positioning ring 5 and the hole wall connection of the first assembly hole 15, when the first groove body 33 cooperates with the lamination group 3, the outer ring surface of the lamination group 3 and the second
  • the annular surface 331 of a groove is bonded, and the end surface of the lamination stack 3 is bonded to the end surface 332 of the first groove.
  • the first groove ring surface 331 constrains the lamination stack 3 in the radial direction
  • the first groove end surface 332 constrains the lamination stack 3 in the axial direction.
  • the first positioning ring 5 includes two half rings, and the two half rings surround to form the first assembly hole 15 .
  • the second pressing member 32 includes a third positioning ring 12, and the third positioning ring 12 has a second assembly hole 11 and a second groove body 34, and the second groove body 34 is assembled along the second Circumferential arrangement of the hole 11, the second groove body 34 has a second groove ring surface 341 that can be attached to the outer ring surface of the lamination set 3, and a second groove end surface 342 that can be attached to the end surface of the lamination set 3 .
  • the second groove body 34 is arranged at the junction of the end face of the third positioning ring 12 and the hole wall of the second assembly hole 11.
  • the outer ring surface of the lamination group 3 and the first The ring surface 341 of the second groove is bonded, and the end surface of the lamination stack 3 is bonded to the end surface 342 of the second groove.
  • the second groove ring surface 341 constrains the lamination stack 3 in the radial direction
  • the second groove end surface 342 constrains the lamination stack 3 in the axial direction.
  • the first groove end surface 332 and the second groove end surface 342 respectively press the lamination group 3 at both ends of the lamination group 3 , so that the laminations or pressure rings in the lamination group 3 are extruded and laminated.
  • the first pressing member 31 is provided with a plurality of first connecting holes 311
  • the second pressing member 32 is provided with a plurality of second through holes 321.
  • the connection holes 311 and the second through holes 321 are provided in one-to-one correspondence;
  • the pressing assembly also includes a pressing rod 14 and a locking member 13, the first end of the pressing rod 14 is arranged in the first connecting hole 311, and the second end of the pressing rod 14 passes through the first connecting hole 311.
  • the second through hole 321 is detachably connected to the locking member 13 ; the locking member 13 abuts against the outer edge of the second through hole 321 .
  • the first pressing member 31 and the second pressing member 32 are locked by the locking member 13 to realize the fixing of the lamination stack 3 .
  • the first connecting hole 311 is a threaded hole opened on the first pressing member 31;
  • the pressing rod 14 is a screw, and the locking member 13 is a nut matched with the screw;
  • the first end of the screw rod is engaged in the threaded hole, the second end of the screw rod passes through the second through hole 321, and is connected with the nut, and the nut is connected with the second through hole 321.
  • the outer edges meet.
  • the threaded holes are opened on the second positioning ring 4 and evenly arranged along the circumference of the first positioning hole 24 .
  • the number of threaded holes is four; the second through holes 321 are opened on the third positioning ring 12, and are evenly arranged along the circumference of the second assembly hole 11, and the second through holes 321 correspond to the threaded holes one by one .
  • the pressing rod 14 can also be welded with the first connecting hole 311 .
  • the radial positioning member 1 includes a base 9, a core 10 and a plurality of petals 6; the plurality of petals 6 are evenly arranged on the base 9 along the circumference of the shaft hole 30,
  • the petal body 6 has relative fixed ends and free ends along the axial direction of the stack 3, the fixed ends are connected to the base 9, the petal body 6 surrounds and forms a positioning cavity 8 with an opening 7 at one end, and the opening 7 is located at the free end; the positioning cavity
  • the inner wall of 8 has a taper along the axial direction of the lamination group 3, and along the direction from the free end to the fixed end, the axial section size of the positioning cavity 8 decreases gradually;
  • the inner wall of the positioning cavity 8 is a conical surface, and the petals 6 are independent of each other to increase the deformation of the core 10 after insertion.
  • the outer wall of the petals 6 and the hole wall of the shaft hole 30 of the lamination group 3 are clearance fit. , as the core body 10 is stuffed into, deformed and expanded, it will interfere with the hole wall of the shaft hole 30, and drive the shaft hole 30 to coaxially cooperate with the radial positioning member 1, and the center of the bottom of the axial positioning member 2 is provided with a through-hole threaded hole 16 , the core body 10 can be reversely pushed out from the positioning cavity 8 by screwing in the screw.
  • the rotor lamination assembly method provided by the present application includes the following steps:
  • the assembly process of the lamination stack 3, as shown in Figure 1, places the axial positioning part 2 on a horizontal platform, the second positioning ring 4 is placed on the upper end surface of the axial positioning part 2, and the radial positioning part 1 passes through The first positioning hole 24, the first positioning ring 5 is put into the first positioning hole 24, the radial positioning member 1 passes through the first assembly hole 15, the second protrusion 21 of the first positioning ring 5 and the first positioning The first protruding part 23 in the hole 24 abuts to make it positioned, and the multiple laminations of the lamination group 3 are sequentially assembled on the first groove body 33 of the first positioning ring 5.
  • the radial positioning member 1 Pass through the shaft hole 30 of each lamination, and finally the bottom positioning ring 17 is matched with the first groove body 33, the bottom positioning ring 17, the magnetic bearing lamination 18, the magnetic bearing lamination pressure ring 19, the sensor lamination 27 and the sensor
  • the laminated pressure rings 20 are stacked sequentially from bottom to top; as shown in Figure 2, the core body 10 is put into the positioning cavity 8 from the opening 7 of the radial positioning member 1, and the core body 10 squeezes the valve body 6, so that the valve body 6 is compressed and deformed to expand outward, and the petal body 6 squeezes the hole wall of the shaft hole 30 when expanding outward, so as to achieve the effect of centering the laminations; after the lamination group 3 is centered, the third positioning ring 12 is assembled to the stack On the top of the sheet group 3, the radial positioning member 1 passes through the second assembly hole 11, the sensor lamination pressure ring 20 cooperates with the second groove body 34, the screw rod passes through the second through hole 321 and is connected with the threaded hole
  • the lamination group 3 is heated to make it expand as a whole, and then the lamination group 3 is put on the rotor 26, as shown in Figure 6, at this time, the lamination group 3 is in an uncooled state
  • the compression sleeve 25 is installed on the end of the rotor 26, the compression sleeve 25 abuts against the third positioning ring 12, and the pressure is applied to the compression sleeve 25 by a press, so that a plurality of laminations are pressed together. And there is no gap between the lamination and the pressure ring; loosen the nut, remove the third positioning ring 12, and then axially disengage the second positioning ring 4 from the first positioning ring 5.
  • the first positioning ring The two half-rings of 5 can be removed independently, the inner diameter of the first positioning hole 24 of the second positioning ring 4 is larger than the outer diameter of the rotor 26 and the lamination stack 3, and the second positioning ring 4 is released from the rotor 26 in the axial direction, Finally, the mating state of the rotor 26 and the lamination stack 3 as shown in FIG. 7 is formed.
  • the lamination group 3 is put on the rotor 26 .
  • the compression sleeve 25 again, by setting equipment such as a press at the end of the compression sleeve 25 away from the lamination group 3, apply pressure to the compression sleeve 25, and then complete the pressure welding, that is, complete the stacking process.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. for the technical Personnel can understand the meanings of the above terms in this application according to the situation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
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Abstract

本申请涉及一种定位工装及转子叠片装配方法。本申请提供的定位工装，包括胀紧组件和压紧组件；胀紧组件包括轴向定位件和径向定位件，径向定位件能够穿过待装配的叠片组的轴孔，径向定位件能够对轴孔的孔壁产生径向作用力，径向定位件具有沿叠片组轴向方向的相对的第一端和第二端，压紧组件与叠片组可拆卸配合，压紧组件能够对叠片组产生沿轴向的压紧作用力；径向定位件的第一端和第二端分别位于压紧组件的两侧，轴向定位件连接于径向定位件靠近第一端的位置，压紧组件对轴向定位件产生沿第二端至第一端方向的作用力。

Description

定位工装及转子叠片装配方法
本公开要求在2021年12月27日提交中国专利局、申请号为202111607151.X的中国专利申请的优先权，以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及磁悬浮轴承领域，例如涉及一种定位工装及转子叠片装配方法。
背景技术
磁悬浮轴承转子由传感器叠片压环、传感器叠片、磁轴承叠片压环、磁轴承叠片、底部定位环和转子芯轴六部分组成，在常规的装配方法中叠片定位套杯起到支持定位作用，将传感器叠片压环、传感器叠片、磁轴承叠片压环、磁轴承叠片依次放入叠片定位套杯内腔中，放入完成后将其轴向压紧，然后将传感器叠片压环、叠片定位套杯圆周环焊使其锁紧固定形成转子组件，之后再将转子组件加热后套装至转子芯轴，最终进行机加工，将转子组件外径加工至所需求的尺寸。
此装配方法，叠片定位套杯仅为装配工艺过程使用，成品会将其加工去掉，并且此件为消耗件，综合下来磁悬浮电机转子的成本也会提高，造成了成本浪费。并且，转子组件叠压焊接完成后如发现存在装配缺陷，例如叠片数量装配有偏差、叠片之间夹杂异物或者存在缝隙、叠片与压环顺序有偏差等情况，维修起来需要将焊点切开后重新调整正确后再进行焊接，其中去除焊点过程需要机床来执行，人工无法完成，且叠片定位套为薄壁件，很容易破坏此零件的精度造成报废，维修过程费时费力，造成成本浪费与工期延误。
发明内容
本申请提供一种定位工装，能够简化叠片组的层叠装配。
本申请还提供一种转子叠片装配方法，能够简化叠片组与转子的装配。
一方面，本申请提供的定位工装，包括胀紧组件和压紧组件；
所述胀紧组件包括轴向定位件和径向定位件，所述径向定位件能够穿过待装配的叠片组的轴孔，所述径向定位件能够对所述轴孔的孔壁产生径向作用力，所述径向定位件具有沿所述叠片组轴向方向的相对的第一端和第二端，所述径 向定位件的第一端与所述轴向定位件相连；
所述压紧组件设置为与叠片组可拆卸配合，所述压紧组件包括相对设置的第一压紧件和第二压紧件，所述第一压紧件包括第一定位环，所述第一定位环设于所述轴向定位件上，同时所述径向定位件位于所述第一定位环内；
所述叠片组设于所述第二压紧件和所述第一定位环之间，且所述叠片组的两端分别与所述第二压紧件和所述第一定位环相抵；
所述第一定位环包括多个连接部，任意相邻两个所述连接部之间可拆卸连接，全部所述连接部依次连接形成所述第一定位环。
另一方面，本申请提供的转子叠片装配方法，包括：
将轴向定位件放置于水平平台上，将第一压紧件放置在所述轴向定位件上，径向定位件穿过所述第一压紧件的第一装配孔；
将待装配的叠片组放置在所述第一压紧件上，所述径向定位件穿过所述叠片组的轴孔；
将芯体放入所述径向定位件的定位腔内，通过所述芯体向外挤压所述径向定位件，使得所述径向定位件膨胀，所述径向定位件在所述轴孔内向外挤压所述叠片组，将所述叠片组对中；
将第二压紧件放置在所述叠片组上，所述径向定位件穿过所述第二压紧件的第二装配孔，将所述第二压紧件和所述第一压紧件相连，使得所述第一压紧件和所述第二压紧件对所述叠片组产生轴向的挤压；
取出所述芯体，所述径向定位件回缩，将所述径向定位件从所述轴孔内抽出；
加热所述叠片组，将所述叠片组套设在待装配的转子上；
将压紧套筒从所述转子的端部套入，所述压紧套筒与所述第二压紧件相抵，使得所述叠片组的一端与所述转子的轴节相抵；
依次拆下所述压紧套筒、所述第二压紧件和所述第一压紧件。
附图说明
为了说明本申请具体实施方式或相关技术中的技术方案，下面将对具体实施方式或相关技术描述中所需要使用的附图作介绍，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的定位工装的一种结构示意图；
图2为本申请实施例提供的定位工装的另一种结构示意图；
图3为本申请实施例提供的定位工装的第三种结构示意图；
图4为本申请实施例提供的第一定位环的结构示意图；
图5为本申请实施例提供的第二定位环的结构示意图；
图6为本申请实施例提供的装配示意图；
图7为本申请实施例提供的另一种装配示意图。
图标：1、径向定位件；2、轴向定位件；3、叠片组；4、第二定位环；5、第一定位环；6、瓣体；7、开口；8、定位腔；9、基座；10、芯体；11、第二装配孔；12、第三定位环；13、锁紧件；14、压杆；15、第一装配孔；16、通孔螺纹孔；17、底部定位环；18、磁轴承叠片；19、磁轴承叠片压环；20、传感器叠片压环；21、第二凸出部；22、连接部；23、第一凸出部；24、第一定位孔；25、压紧套筒；26、转子；27、传感器叠片；30、轴孔；101、第一端；102、第二端；31、第一压紧件；32、第二压紧件；33、第一槽体；331、第一槽环面；332、第一槽端面；34、第二槽体；341、第二槽环面；342、第二槽端面；311、第一连接孔；321、第二通孔。
具体实施方式
下面将结合实施例对本申请的技术方案进行描述，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
实施例
根据图1至图7所示的定位工装，包括胀紧组件和压紧组件；
胀紧组件包括轴向定位件2和径向定位件1，径向定位件1能够穿过待装配的叠片组3的轴孔30，径向定位件1能够对叠片组3的轴孔30的孔壁产生径向作用力，径向定位件1具有沿叠片组3轴向方向的相对的第一端101和第二端102，所述径向定位件1的第一端101与所述轴向定位件2相连；
所述压紧组件设置为与叠片组3可拆卸配合，所述压紧组件包括相对设置的第一压紧件31和第二压紧件32，所述第一压紧件31包括第一定位环5，所述第一定位环5设于所述轴向定位件2上，同时所述径向定位件1位于所述第一定位环5内；
所述叠片组3设于所述第二压紧件32和所述第一定位环5之间，且所述叠片组3的两端分别与所述第二压紧件32和所述第一定位环5相抵；
所述第一定位环5包括多个连接部22，任意相邻的两个连接部22之间可拆卸连接，全部连接部22依次连接形成所述第一定位环5。
轴向定位件2和径向定位件1配合实现叠片组3的径向定位。其中轴向定位件2的作用是对叠片组3和径向定位件1进行支撑。叠片组3包括依次层叠的多个环状的叠片，例如叠片组3可以包括传感器叠片压环20、传感器叠片27、磁轴承叠片压环19、磁轴承叠片18和底部定位环17。每个叠片均具有大小一致的轴孔30，这些叠片沿轴向依次层叠。示例性的，每个叠片与其两侧相邻的叠片之间以侧端面紧密贴合的方式进行配合，从而组成叠片组3，叠片各自的轴孔30组成叠片组3的轴孔30。
径向定位件1与轴向定位件2相连，压紧组件放置在轴向定位件2上，叠片组3放置在压紧组件内，通过压紧组件对叠片组3产生沿轴向的挤压，使得叠片组3内的多个叠片保持层叠状态。径向定位件1穿过叠片组3的轴孔30，对轴孔30的孔壁产生径向作用力，通过该作用力，推动叠片组3的叠片移动，并最终达到对中的效果，每个叠片的轴孔30同轴设置，以便于后续叠片组3的轴孔30套设转子26。
由于叠片组3在与转子26装配前，通过径向定位件1的作用实现了对中的效果，从而保证了多个叠片之间的同轴度，通过胀紧组件的作用实现了叠片组3内多个叠片之间的紧密贴合，因此相较于相关技术利用叠片定位套杯将传感器叠片压环20、传感器叠片27、磁轴承叠片压环19、磁轴承叠片18和底部定位环17进行轴向和径向定位，再环焊使其锁紧固定形成转子组件，整体套装至转子26上，最终进行机加工，将转子组件外径加工至所需求的尺寸，本方案中不需要引入额外的叠片定位套杯，因此不需要在完成叠片组3与转子26的装配后，再对叠片定位套杯进行切削加工，去除外径薄壁部分，使其外径符合预设，因此节约了产品最终成品的加工量，提高了加工效率，同时在叠片组3的装配过程中可相对直观地发现装配瑕疵，如叠片数量装配有偏差、叠片之间夹杂异物或者存在缝隙、叠片与压环顺序有偏差等情况可直接发现，且仅通过拆除压紧组件即可进行修正上述瑕疵。
同时，第一定位环5包括有多个连接部22，连接部22呈弧形，当全部连接部22依次连接后，形成第一定位环5。当叠片组3安装完成后，将第一定位环5拆卸即可，无需再通过机加工的形式去除。
在实际使用中，为了减少零件量，第一定位环5包括有两个连接部22，也即连接部22呈半环结构。
可选的，多个连接部22之间可以通过卡箍固定，也可以通过磁吸固定等。
在一实施例中，叠片组3的叠片层叠以及叠片组3与转子26配合的步骤可以为：
S1：将轴向定位件2放置于水平平台上，将第一压紧件31放置在轴向定位件2上，径向定位件1穿过第一压紧件31的第一装配孔15；
S2：将待装配的叠片组3放置在第一压紧件31上，径向定位件1穿过叠片组3的轴孔30；
S3：将芯体10放入径向定位件1的定位腔8内，通过芯体10向外挤压径向定位件1，使得径向定位件1膨胀，径向定位件1在轴孔30内向外挤压叠片组3，将叠片组3对中；
S4：将第二压紧件32放置在叠片组3上，径向定位件1穿过第二压紧件32的第二装配孔11，将第二压紧件32和第一压紧件31相连，使得第一压紧件31和第二压紧件32对叠片组3产生轴向的挤压；
S5：取出芯体10，径向定位件1回缩，将径向定位件1从轴孔30内抽出；
S6：加热叠片组3，将叠片组3套设在待装配的转子26上；
S7：将压紧套筒25从转子26的端部套入，压紧套筒25与第二压紧件32相抵，使得叠片组3的一端与转子26的轴节相抵；
S8：依次拆下压紧套筒25、第二压紧件32和第一压紧件31。
在一种可选的实施方式中，压紧组件包括第一压紧件31和第二压紧件32，第一压紧件31和第二压紧件32可拆卸配合；
在沿轴向方向上，第一压紧件31和第二压紧件32之间存在用于设置叠片组3的间隔；
第一压紧件31对轴向定位件2产生沿第二端102至第一端101方向的作用力，第一压紧件31能够对叠片组3产生沿第一端101至第二端102方向的作用力和沿叠片组3径向的作用力；第二压紧件32能够对叠片组3产生沿第二端102至第一端101方向的作用力和沿叠片组3径向的作用力。
在一种可选的实施方式中，第一压紧件31具有第一装配孔15，第二压紧件32具有第二装配孔11；径向定位件1的第一端101穿过第一装配孔15，径向定位件1的第二端102穿过第二装配孔11。
在一种可选的实施方式中，第一压紧件31包括第二定位环4和第一定位环5，第二定位环4的一侧端面与轴向定位件2配合，第二定位环4具有第一定位孔24，第一定位环5具有第一装配孔15，第一定位环5位于第一定位孔24内，且沿径向 定位件1的第一端101至第二端102的方向上，第二定位环4对第一定位环5产生作用力。
在一种可选的实施方式中，第一定位孔24的孔壁上设有第一凸出部23，第一定位环5的外环面上设有第二凸出部21，第一凸出部23与第二凸出部21沿叠片组3轴向方向抵接。
在一种可选的实施方式中，第一定位环5上具有第一槽体33，第一槽体33沿第一装配孔15的周向布置，第一槽体33具有能够与叠片组3的外环面贴合的第一槽环面331，和能够与叠片组3的端面贴合的第一槽端面332。
第一槽体33设置在第一定位环5的端面与第一装配孔15的孔壁连接处，当第一槽体33与叠片组3配合时，叠片组3的外环面与第一槽环面331贴合，叠片组3的端面与第一槽端面332贴合。第一槽环面331对叠片组3产生沿径向的约束，第一槽端面332对叠片组3产生沿轴向的约束。
在一种可选的实施方式中，第一定位环5包括两个半环，两个半环围合形成第一装配孔15。
在一种可选的实施方式中，第二压紧件32包括第三定位环12，第三定位环12具有第二装配孔11和第二槽体34，第二槽体34沿第二装配孔11的周向布置，第二槽体34具有能够与叠片组3的外环面贴合的第二槽环面341，和能够与叠片组3的端面贴合的第二槽端面342。
第二槽体34设置在第三定位环12的端面与第二装配孔11的孔壁连接处，当第二槽体34与叠片组3配合时，叠片组3的外环面与第二槽环面341贴合，叠片组3的端面与第二槽端面342贴合。第二槽环面341对叠片组3产生沿径向的约束，第二槽端面342对叠片组3产生沿轴向的约束。
第一槽端面332和第二槽端面342分别在叠片组3的两端对叠片组3产生挤压，使得叠片组3内的叠片或压环相互挤压层叠。
在一种可选的实施方式中，第一压紧件31上开设有多个第一连接孔311，所述第二压紧件32上开设有多个第二通孔321，所述第一连接孔311和所述第二通孔321一一对应设置；
所述压紧组件还包括压杆14和锁紧件13，所述压杆14的第一端设于所述第一连接孔311内，所述压杆14的第二端穿过所述第二通孔321与所述锁紧件13可拆卸连接；所述锁紧件13与所述第二通孔321的外缘相抵。
通过锁紧件13将第一压紧件31和第二压紧件32锁紧，实现对于叠片组3的固定。
可选的，所述第一连接孔311为开设于所述第一压紧件31上的螺纹孔；所述压杆14为螺杆，所述锁紧件13为与所述螺杆配合的螺母；所述螺杆的第一端啮合于所述螺纹孔内，所述螺杆的第二端穿过所述第二通孔321，与所述螺母相连，所述螺母与所述第二通孔321的外缘相抵。
示例性的，螺纹孔开设在第二定位环4上，且沿第一定位孔24的周向均匀布置。示例性的，螺纹孔的数量为四个；第二通孔321开设在第三定位环12上，且沿第二装配孔11的周向均匀布置，第二通孔321与螺纹孔一一对应。
可选的，压杆14还可以与第一连接孔311焊接等。
在一种可选的实施方式中，径向定位件1包括基座9、芯体10和多个瓣体6；多个瓣体6沿轴孔30的周向均匀设置在基座9上，瓣体6沿叠片组3轴向方向具有相对的固定端和自由端，固定端与基座9相连，瓣体6围合形成一端开口7的定位腔8，开口7位于自由端；定位腔8的内壁沿叠片组3轴向方向具有锥度，沿自由端至固定端的方向，定位腔8的轴截面尺寸逐渐减小；芯体10为圆台状，且与定位腔8配合。
定位腔8的内壁为锥面，瓣体6之间相互独立以增加芯体10插入后的变形量，瓣体6的外壁面与叠片组3的轴孔30的孔壁之间为间隙配合，随着芯体10塞入变形膨胀后与轴孔30的孔壁过盈配合，带动轴孔30与径向定位件1同轴配合，轴向定位件2底部中心设有通孔螺纹孔16，可通过旋入螺钉将芯体10从定位腔8内反向顶出。
另一方面，本申请提供的转子叠片装配方法，包括以下步骤：
S1：将轴向定位件2放置于水平平台上，将第一压紧件31放置在轴向定位件2上，径向定位件1穿过第一压紧件31的第一装配孔15；
S2：将待装配的叠片组3放置在第一压紧件31上，径向定位件1穿过叠片组3的轴孔30；
S3：将芯体10放入径向定位件1的定位腔8内，通过芯体10向外挤压径向定位件1，使得径向定位件1膨胀，径向定位件1在轴孔30内向外挤压叠片组3，将叠片组3对中；
S4：将第二压紧件32放置在叠片组3上，径向定位件1穿过第二压紧件32的第二装配孔11，将第二压紧件32和第一压紧件31相连，使得第一压紧件31和第二压紧件32对叠片组3产生轴向的挤压；
S5：取出芯体10，径向定位件1回缩，将径向定位件1从轴孔30内抽出；
S6：加热叠片组3，将叠片组3套设在待装配的转子26上；
S7：将压紧套筒25从转子26的端部套入，压紧套筒25与第二压紧件32相抵，使得叠片组3的一端与转子26的轴节相抵；
S8：依次拆下压紧套筒25、第二压紧件32和第一压紧件31。
叠片组3的装配过程，如图1所示，将轴向定位件2放置于水平平台上，第二定位环4放置于轴向定位件2的上端面上，径向定位件1穿过第一定位孔24，将第一定位环5放入第一定位孔24内，径向定位件1穿过第一装配孔15，第一定位环5的第二凸出部21与第一定位孔24内的第一凸出部23抵接，使其进行定位，将叠片组3的多个叠片依次装配至第一定位环5的第一槽体33上，此时径向定位件1穿过每个叠片的轴孔30，最终底部定位环17与第一槽体33配合，底部定位环17、磁轴承叠片18、磁轴承叠片压环19、传感器叠片27和传感器叠片压环20从下往上依次层叠；如图2所示，将芯体10从径向定位件1的开口7放入定位腔8内，芯体10挤压瓣体6，使得瓣体6受压变形至外扩，瓣体6在外扩时挤压轴孔30的孔壁，从而起到将叠片对中的效果；叠片组3对中后将第三定位环12装配至叠片组3的顶部，径向定位件1穿过第二装配孔11，传感器叠片压环20与第二槽体34配合，将螺杆穿过第二通孔321与螺纹孔相连，再将螺母旋入螺杆上，此时如发现叠片数量装配有偏差、叠片之间夹杂异物或者存在缝隙、叠片与压环顺序有偏差等情况，将螺母松开进行调整；如图3所示，从定位腔8内取出芯体10，使得瓣体6收缩，从轴孔30内抽出径向定位件1，此时叠片组3、第二定位环4、第一定位环5和第三定位环12组成装配体；
叠片组3与转子26装配过程，将叠片组3加热使其整体膨胀，再将叠片组3套装至转子26上，如图6所示，此时在叠片组3处于未冷却状态时，再在转子26的端部装上压紧套筒25，压紧套筒25与第三定位环12抵接，通过压力机对压紧套筒25施加压力，将多个叠片之间以及叠片与压环之间充分的压紧无间隙；松开螺母，取下第三定位环12，然后将第二定位环4与第一定位环5轴向脱离，此时第一定位环5的两个半环可独立取下，第二定位环4的第一定位孔24内径大于转子26和叠片组3的外径，将第二定位环4沿轴向从转子26上脱出，最终形成如图7所示的转子26和叠片组3配合状态。
其中，当将叠片组3加热使其整体膨胀后，再将叠片组3套至转子26上。再套上压紧套筒25，通过在压紧套筒25远离叠片组3的一端，设置如压力机等设备，对压紧套筒25施加压力，进而完成压焊，也即完成对于叠片组3的安装。
在本申请实施例的描述中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域技术 人员而言，可以根据情况理解上述术语在本申请中的含义。
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。

Claims (9)

  1. 一种定位工装，包括胀紧组件和压紧组件；
    所述胀紧组件包括轴向定位件(2)和径向定位件(1)，所述径向定位件(1)能够穿过待装配的叠片组(3)的轴孔(30)，所述径向定位件(1)能够对所述轴孔(30)的孔壁产生径向作用力，所述径向定位件(1)具有沿所述叠片组(3)轴向方向的相对的第一端(101)和第二端(102)，所述径向定位件(1)的第一端(101)与所述轴向定位件(2)相连；
    所述压紧组件设置为与所述叠片组(3)可拆卸配合，所述压紧组件包括相对设置的第一压紧件(31)和第二压紧件(32)，所述第一压紧件(31)包括第一定位环(5)，所述第一定位环(5)设于所述轴向定位件(2)上，同时所述径向定位件(1)位于所述第一定位环(5)内；
    所述叠片组(3)设于所述第二压紧件(32)和所述第一定位环(5)之间，且所述叠片组(3)的两端分别与所述第二压紧件(32)和所述第一定位环(5)相抵；
    所述第一定位环(5)包括多个连接部(22)，任意相邻的两个所述连接部(22)之间可拆卸连接，所述多个连接部(22)依次连接形成所述第一定位环(5)。
  2. 根据权利要求1所述的定位工装，其中，所述第二压紧件(32)具有第二装配孔(11)，所述第一定位环(5)具有第一装配孔(15)；
    所述径向定位件(1)的第一端(101)穿过所述第一装配孔(15)，所述径向定位件(1)的第二端(102)穿过所述第二装配孔(11)。
  3. 根据权利要求2所述的定位工装，其中，所述第一压紧件(31)还包括第二定位环(4)，所述第二定位环(4)的一侧端面与所述轴向定位件(2)配合，所述第二定位环(4)具有第一定位孔(24)，所述第一定位环(5)位于所述第一定位孔(24)内，且沿所述径向定位件(1)的第一端(101)至第二端(102)的方向上，所述第二定位环(4)对所述第一定位环(5)产生作用力；
    所述第一定位环(5)上具有第一槽体(33)，所述第一槽体(33)沿所述第一装配孔(15)的周向布置，所述第一槽体(33)具有能够与所述叠片组(3)的外环面贴合的第一槽环面(331)，和能够与所述叠片组(3)的端面贴合的第一槽端面(332)。
  4. 根据权利要求3所述的定位工装，其中，所述第一定位孔(24)的孔壁上设有第一凸出部(23)，所述第一定位环(5)的外环面上设有第二凸出部(21)，所述第一凸出部(23)与所述第二凸出部(21)沿所述叠片组(3)轴向方向抵接。
  5. 根据权利要求2所述的定位工装，其中，所述第二压紧件(32)包括第三定位环(12)，所述第三定位环(12)具有所述第二装配孔(11)和第二槽体(34)，所述第二槽体(34)沿所述第二装配孔(11)的周向布置，所述第二槽体(34)具有能够与所述叠片组(3)的外环面贴合的第二槽环面(341)，和能够与所述叠片组(3)的端面贴合的第二槽端面(342)。
  6. 根据权利要求1所述的定位工装，其中，所述第一压紧件(31)上开设有多个第一连接孔(311)，所述第二压紧件(32)上开设有多个第二通孔(321)，所述多个第一连接孔(311)和所述多个第二通孔(321)一一对应设置；
    所述压紧组件还包括压杆(14)和锁紧件(13)，所述压杆(14)的第一端设于一个所述第一连接孔(311)内，所述压杆(14)的第二端穿过一个所述第二通孔(321)与所述锁紧件(13)可拆卸连接；
    所述锁紧件(13)与所述第二通孔(321)的外缘相抵。
  7. 根据权利要求6所述的定位工装，其中，所述第一连接孔(311)为开设于所述第一压紧件(31)上的螺纹孔；
    所述压杆(14)为螺杆，所述锁紧件(13)为与所述螺杆配合的螺母；
    所述螺杆的第一端啮合于所述螺纹孔内，所述螺杆的第二端穿过所述第二通孔(321)，与所述螺母相连，所述螺母与所述第二通孔(321)的外缘相抵。
  8. 根据权利要求1-7任一项所述的定位工装，其中，所述径向定位件(1)包括基座(9)、芯体(10)和多个瓣体(6)；多个所述瓣体(6)沿所述轴孔(30)的周向均匀设置在所述基座(9)上，所述瓣体(6)沿所述叠片组(3)轴向方向具有相对的固定端和自由端，所述固定端与所述基座(9)相连，所述瓣体(6)围合形成一端开口(7)的定位腔(8)，所述开口(7)位于所述自由端；所述定位腔(8)的内壁沿所述叠片组(3)轴向方向具有锥度，沿所述自由端至所述固定端的方向，所述定位腔(8)的轴截面尺寸逐渐减小；所述芯体(10)为圆台状，且与所述定位腔(8)配合。
  9. 一种转子叠片装配方法，包括：
    将轴向定位件(2)放置于水平平台上，将第一压紧件(31)放置在所述轴向定位件(2)上，径向定位件(1)穿过所述第一压紧件(31)的第一装配孔(15)；
    将待装配的叠片组(3)放置在所述第一压紧件(31)上，所述径向定位件(1)穿过所述叠片组(3)的轴孔(30)；
    将芯体(10)放入所述径向定位件(1)的定位腔(8)内，通过所述芯体 (10)向外挤压所述径向定位件(1)，使得所述径向定位件(1)膨胀，所述径向定位件(1)在所述轴孔(30)内向外挤压所述叠片组(3)，将所述叠片组(3)对中；
    将第二压紧件(32)放置在所述叠片组(3)上，所述径向定位件(1)穿过所述第二压紧件(32)的第二装配孔(11)，将所述第二压紧件(32)和所述第一压紧件(31)相连，使得所述第一压紧件(31)和所述第二压紧件(32)对所述叠片组(3)产生轴向的挤压；
    取出所述芯体(10)，所述径向定位件(1)回缩，将所述径向定位件(1)从所述轴孔(30)内抽出；
    加热所述叠片组(3)，将所述叠片组(3)套设在待装配的转子(26)上；
    将压紧套筒(25)从所述转子(26)的端部套入，所述压紧套筒(25)与所述第二压紧件(32)相抵，使得所述叠片组(3)的一端与所述转子(26)的轴节相抵；
    依次拆下所述压紧套筒(25)、所述第二压紧件(32)和所述第一压紧件(31)。
PCT/CN2023/078146 2021-12-27 2023-02-24 定位工装及转子叠片装配方法 WO2023126022A1 (zh)

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