WO2019076305A1 - 磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承 - Google Patents

磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承 Download PDF

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WO2019076305A1
WO2019076305A1 PCT/CN2018/110497 CN2018110497W WO2019076305A1 WO 2019076305 A1 WO2019076305 A1 WO 2019076305A1 CN 2018110497 W CN2018110497 W CN 2018110497W WO 2019076305 A1 WO2019076305 A1 WO 2019076305A1
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Prior art keywords
stator assembly
tooling
tool
glue
sealing
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PCT/CN2018/110497
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English (en)
French (fr)
Inventor
董如昊
张小波
张芳
龚高
苏久展
张超
田思园
李欣
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珠海格力节能环保制冷技术研究中心有限公司
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Publication of WO2019076305A1 publication Critical patent/WO2019076305A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof

Definitions

  • the present application relates to the field of magnetic suspension bearing processing technology, and more particularly to a magnetic suspension bearing stator assembly sealing method, a sealing tooling and a magnetic suspension bearing.
  • the existing radial magnetic suspension bearing stator assembly 100 includes a magnetic steel 1, a fixed frame assembly 200, a radial ring 4, an iron core 5 and a coil 6, and the fixing frame assembly includes a magnetic steel fixing frame 2 and a baffle plate. 3.
  • the coil 6 is first wound onto the iron core 5, then the radial ring 4 is heated to expand, and the iron core 5 around which the coil 6 is wound is inserted into the radial ring 4, and after being cooled, the paint is dipped. Air dried.
  • the magnet holder 2 is fastened to the baffle 3 by screws, and then the eight pieces of magnet 1 are magnetically attracted to the baffle 3 in the design direction and positioned by the magnet holder 2.
  • the magnetic steel and the fixing frame assembly are slowly attached to the radial ring 4 which has been immersed in the air-dried paint to complete the assembly.
  • the magnetic steel 1 is only positioned, fastened and connected by magnetic force, and during the assembly process, since the magnetic steel 1 has strong magnetic force, vibration and impact are inevitable, so magnetic field often occurs during the manufacturing process.
  • it is not advisable to use mechanical connections in the axial direction otherwise the magnetic steel may be crushed or new positioning and assembly problems may occur.
  • the technical problem to be solved by the present application is to provide a magnetic suspension bearing stator assembly sealing method, a sealing tooling tool and a magnetic suspension bearing, which can fix the magnetic steel more firmly, and avoid the phenomenon that the magnetic steel is released or displaced during the manufacturing process.
  • the technical solution of the present application is to provide a magnetic suspension bearing stator assembly sealing method, comprising the following steps:
  • stator assembly After the stator assembly is assembled, the stator assembly is mounted into a glue tooling, and an injection space is formed between the outer circumferential surface of the stator assembly and the sealing tooling;
  • the sealing tool equipped with the stator assembly is heated, so that the glue in the injection space is solidified and coated on the outer circumferential surface of the stator assembly.
  • step b the glue also fills the gap inside the stator assembly, and in step c, the glue in the gap inside the stator assembly is also solidified.
  • step a the step of installing the stator assembly into the sealing tooling comprises:
  • the tooling shaft of the sealing tooling is passed through the tooling radial ring and the stator assembly, so that the first section of the tooling shaft extends out of the tooling radial ring, the second section of the tooling shaft and the stator component Cooperating with the inner circle, and the third section of the tooling shaft is in contact with the baffle of the stator assembly, and the outer circle of the stator assembly is in clearance fit with the inner circle of the tooling radial ring;
  • A3 Fix the tooling cover of the sealing tooling tool at one end of the radial ring of the tooling, so that the tooling cover plate and the coil of the stator assembly are pressed tightly together, and the annular bearing portion of the other end of the radial ring of the tooling is a baffle of the stator assembly is press-fitted to form the glue injection space between an inner circular surface of the tool radial ring, an outer circumferential surface of the stator assembly, and an inner surface of the tool cover, the tooling shaft
  • the first section passes through the first through hole and the second through hole in the middle of the tool cover, and the second section of the tool shaft cooperates with the first through hole on the tool cover.
  • step b the glue is injected into the glue injection space through the injection hole on the tool cover, and the air in the glue injection space passes through the vent hole on the tool cover. discharge.
  • the glue is injected into the glue injection space by pressurization.
  • the release agent is applied to the inner circumferential surface of the tooling radial ring and the inner surface of the tool cover.
  • step c the glue is heated to a thermosetting temperature of the glue to cure the glue.
  • step c the sealing tool is heated in a heating device, and then heated, and then insulated, and then the sealing tool is taken out from the heating device for cooling.
  • the heating device is an oven.
  • the glue is a thermoset plastic.
  • thermoset plastic is an epoxy resin.
  • the present application also provides a sealing tool for the magnetic suspension bearing stator assembly sealing method described above, comprising a tooling radial ring, a tooling cover plate and a tooling shaft, wherein the tooling cover plate is fixed to the tooling radial ring
  • One end of the tooling radial ring is provided with an annular bearing portion
  • the stator assembly is placed in the tool radial ring and the annular bearing portion is pressed against the baffle of the stator assembly and the tool cover is
  • the coil of the stator assembly is pressed tightly
  • the tooling shaft is disposed in the tooling radial ring, the stator assembly and the tooling cover plate, and the tooling shaft abuts the tooling cover plate, and the inner circular surface of the tooling radial ring
  • a glue injection space is formed between the outer circumferential surface of the stator assembly and the inner surface of the tool cover.
  • the tool cover is provided with a glue injection hole and a vent hole that communicate with the glue injection space.
  • the tooling shaft includes a first segment, a second segment, and a third segment that are sequentially connected, and outer diameters of the first segment, the second segment, and the third segment are sequentially increased, and the tooling a first through hole and a second through hole coaxially connected to each other, wherein the first through hole has a diameter larger than the second through hole diameter and the first through hole is adjacent to the stator assembly, and the first part of the tool shaft
  • the segment passes through the first through hole and the second through hole on the tool cover, and the second portion of the tool shaft cooperates with the inner circle of the stator assembly and the first through hole, and the third portion and the stator of the tool shaft
  • the baffle of the component is in contact.
  • the inner circumferential surface of the tooling radial ring and the inner surface of the tooling cover are brushed with a release agent.
  • the tool cover is bolted to the tooling radial ring.
  • the second section of the tooling shaft is in clearance fit with the inner circle of the stator assembly.
  • the outer circle of the stator assembly is in a clearance fit with the inner circle of the tooling radial ring.
  • the present application also provides a magnetic suspension bearing comprising a stator assembly that is assembled and processed by the encapsulation method described above.
  • the stator assembly is assembled and put into the sealing tooling, and then the glue is injected into the injection space, and the heating sealing tool is used to solidify and wrap the glue on the outer circumferential surface of the stator assembly, so that the stator assembly can be
  • the surface of the outer circle is coated with a layer of solid glue, which can fix the magnetic steel more firmly, avoiding the phenomenon that the magnetic steel is released or displaced during the manufacturing process, and the assembly precision and manufacturing efficiency of the magnetic suspension bearing are ensured.
  • the encapsulation method covers the outer surface of the stator assembly with the solid glue, and the gap inside the stator assembly is filled with the solid glue, thereby improving the manufacturing stability of the magnetic suspension bearing product and replacing the traditional dip coating process. It can protect the stator assembly, thereby improving the corrosion resistance of the product and improving the service life of the stator assembly.
  • FIG. 1 is a structural view of a fixing frame assembly of a magnetic suspension bearing stator assembly in the prior art
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • FIG. 3 is a structural view of a stator assembly of a magnetic suspension bearing in the prior art
  • Figure 4 is a cross-sectional view taken along line B-B of Figure 3;
  • Figure 5 is a schematic view showing the mounting of the magnetic suspension bearing stator assembly in the sealing tooling tool of the present application
  • Figure 6 is a cross-sectional view taken along line C-C of Figure 3;
  • Figure 7 is a schematic view of the magnetic suspension bearing stator assembly sandwiched between the annular bearing portion and the tooling cover in the present application.
  • the prior art magnetic steel can be magnetically adsorbed on the cage, since the impact and vibration are inevitably in the process of mounting the stator assembly to the applied component, the magnetic steel often falls off or is The phenomenon of the flying fly, and then want to put the piece of magnetic steel back, due to the influence of the magnetic force of other magnetic steel remaining inside the stator assembly, it is very difficult to accurately put back into the original position, which seriously reduces the production efficiency and manufacturing precision.
  • the mechanical limit is used, the complexity of the structure will increase, and new positioning and assembly problems will arise.
  • a magnetic suspension bearing stator assembly sealing method is proposed in the embodiment of the present application, which includes the following steps:
  • stator assembly after assembling the stator assembly, the stator assembly is installed into a glue tooling, and the outer surface of the stator assembly and the sealing tooling form a glue injection space 10;
  • the sealing tool equipped with the stator assembly is heated to solidify and wrap the outer surface of the stator assembly.
  • the solid rubber can be coated on the outer circumferential surface of the stator assembly, so that the magnetic steel can be more firmly fixed, and the phenomenon that the magnetic steel is released or displaced during the manufacturing process is avoided, and the assembly precision of the magnetic suspension bearing is ensured. Manufacturing efficiency.
  • step b the glue also fills the gap inside the stator assembly (where the gap inside the stator assembly includes the gap between the magnetic steel and the magnetic steel holder, the baffle, the radial ring, the core and the diameter
  • step c also causes the glue in the gap inside the stator assembly to solidify.
  • step a the steps of installing the stator assembly into the sealing tool include:
  • stator assembly is placed in the tooling radial ring 7 of the sealing tooling;
  • the tooling shaft 9 of the sealing tooling is passed through the tooling radial ring 7 and the stator assembly, so that the first segment 91 of the tooling shaft 9 extends out of the tooling radial ring 7, the second segment 92 of the tooling shaft 9 and the stator
  • the inner circle of the assembly is mated, and the third section 93 of the tooling shaft 9 is in contact with the baffle 3 of the stator assembly, and the outer circle of the stator assembly is in clearance fit with the inner circle of the tooling radial ring 7;
  • step b the glue is injected into the glue injection space 10 through the glue injection hole 81 on the tool cover 8 , and the air in the glue injection space 10 is discharged through the vent hole 82 on the tool cover 8 .
  • step c the glue needs to be heated to the thermosetting temperature of the glue to solidify the glue.
  • the sealing tooling is heated in the heating device, and then heated, and then kept warmed, and then the sealing tool is taken out from the heating device for cooling, the sealing process is completed, and the stator assembly is taken out from the sealing tool after cooling.
  • the heating device is an oven.
  • step a it is necessary to brush the release agent on the inner circumferential surface of the tool radial ring 7 and the inner surface of the tool cover 8.
  • the glue liquid is a thermosetting plastic
  • the thermosetting plastic is preferably an epoxy resin.
  • These plastics have high thermal stability, good insulation properties and high strength, which can completely replace the dipping process in the manufacturing process of magnetic suspension bearings, thus simplifying the production process.
  • the paint for dipping paint is chemically reacted with the lubricating oil in the protective bearing (a necessary protective mechanism for the magnetic levitation system) to corrode and protect the bearing, the chemical properties of the thermosetting plastic such as epoxy resin are extremely stable, so Can play a role in improving the overall reliability of the magnetic levitation system.
  • the magnetic suspension bearing since the magnetic suspension bearing is likely to be used in a harsh chemical environment, such as an air conditioner compressor or a nuclear power cooling water pump, it is immersed in a liquid such as a refrigerant or a refrigerating oil for a long time, and the iron core is only protected by a thin paint in the prior art. Electrochemical corrosion is prone to occur after a long time, and the stator assembly of the present application is entirely wrapped in an epoxy resin having extremely stable chemical properties, thereby improving the overall reliability of the magnetic suspension bearing.
  • epoxy resin is a good metal bond, the magnetic steel after sealing can be well fixed, and the thermal conductivity of epoxy resin is 100 times that of air, which makes the magnetic suspension bearing better heat dissipation and enhance the service of magnetic suspension bearing. Performance, and epoxy electrical insulation and corrosion resistance are also excellent.
  • the sealing tool for the magnetic suspension bearing stator assembly sealing method is also proposed in the embodiment of the present application, and the sealing tooling includes the tooling radial ring 7, the tooling cover plate 8 and the tooling shaft 9, and the tooling
  • the cover plate 8 is fixed to one end of the tooling radial ring 7, and the other end of the tooling radial ring 7 is provided with an annular bearing portion 71.
  • the tool cover plate 8 is provided with a threaded through hole, and the tooling radial ring 7 is provided with a threaded blind hole, and the tool cover plate 8 is fixed to the tooling radial ring 7 by bolts.
  • the stator assembly is placed in the tool radial ring 7 and the tool cover 8 is pressed against the coil 6 of the stator assembly and the annular bearing 71 is pressed against the baffle 3 of the stator assembly (ie, the stator assembly is clamped to the annular bearing portion). Between the tool cover and the tool cover to position the stator assembly in the axial direction.
  • the tooling shaft 9 is disposed in the tooling radial ring 7, the stator assembly and the tooling cover 8, and the tooling shaft 9 abuts the tooling cover 8 to position the stator assembly in the radial direction, so that the stator assembly is in the seal
  • the glue assembly is positioned both axially and radially so that no additional mounting and positioning procedures are required.
  • a glue injection space 10 is formed between the inner circumferential surface of the tool radial ring 7, the outer circumferential surface of the stator assembly, and the inner surface of the tool cover 8.
  • the outer circumference of the stator assembly and the inner circle of the tool radial ring are gaps.
  • the coil 6 of the stator assembly is protruded from the core 5 (ie, the outer surface of the stator assembly is a stepped surface), such that the core 5 and the tool cover 8 are spaced apart to form a cavity.
  • the cavity is in communication with the gap between the outer circumference of the stator assembly and the inner circle of the tooling radial ring to form a glue injection space.
  • the glue is injected into the injection space, and the glue will fill the gap between the injection space and the interior of the stator assembly.
  • the sealing tool equipped with the stator assembly is heated to make the glue injection.
  • the glue in the space is solidified and coated on the outer circumferential surface of the stator assembly, and the glue in the gap inside the stator assembly is solidified, so that the glue can be coated on the outer circumferential surface of the stator assembly by the sealing tooling.
  • the solid glue can fix the magnetic steel more firmly, avoiding the phenomenon that the magnetic steel is out or displaced during the manufacturing process, and the assembly precision and manufacturing efficiency of the magnetic suspension bearing are ensured.
  • the manufacturing stability of the magnetic suspension bearing product is improved by coating the outer surface of the stator assembly with the solid glue and filling the gap inside the stator assembly with the solid glue.
  • the tool cover 8 is provided with an injection hole 81 and a vent hole 82 communicating with the injection space 10, and when the glue is injected, the glue is injected into the injection space 10 through the injection hole 81, and the glue injection space 10 is The air is exhausted from the vent hole 82.
  • the tooling shaft 9 includes a first segment 91, a second segment 92, and a third segment 93 that are sequentially connected.
  • the outer diameters of the first segment 91, the second segment 92, and the third segment 93 are sequentially increased, the first segment 91.
  • the second segment 92 and the third segment 93 are integrally formed.
  • the tool cover 8 is provided with a first through hole 83 and a second through hole 84 which are coaxial and communicate with each other.
  • the first through hole 83 has a diameter larger than the diameter of the second through hole 84 and the first through hole 83 is adjacent to the stator assembly.
  • the first section 91 of the tooling shaft 9 passes through the first through hole 83 and the second through hole 84 on the tooling cover 8, and the second section 92 of the tooling shaft 9 cooperates with the inner circle of the stator assembly and the first through hole 83.
  • the second section 92 of the tooling shaft 9 cooperates with the first through hole 83 to limit the movement of the tooling shaft in the radial direction (after installing the tooling shaft as an example in FIG. 6, the tooling axis can only exit to the left. , and can no longer move to the right, up or down), positioning the stator assembly in the radial direction.
  • the third section 93 of the tooling shaft is in contact with the baffle 3 of the stator assembly.
  • first section 91 of the tooling shaft there is a spacing between the first section 91 of the tooling shaft and the wall of the second through hole 84.
  • the second section 92 of the tooling shaft is in a clearance fit with the inner circle of the stator assembly and the first through hole 83.
  • the inner circumferential surface of the tooling radial ring 7 and the inner surface of the tool cover 8 are brushed with a release agent.
  • the embodiment of the present application further provides a magnetic suspension bearing, which comprises a stator assembly, and the stator assembly is assembled and processed by the above sealing method.
  • the stator assembly is assembled and placed in the sealing tool to inject the glue, and the glue solidifies to form a solid glue coated on the outer circumferential surface of the stator assembly to achieve the purpose of positioning and fixing the position of the magnetic steel.
  • the manufacturing stability of the magnetic suspension bearing product is improved by coating the outer surface of the stator assembly with the solid glue and filling the gap inside the stator assembly with the solid glue.
  • the sealing method replaces the traditional dip coating process, which can protect the stator assembly, thereby improving the corrosion resistance of the product and improving the service life of the stator assembly.

Abstract

一种磁悬浮轴承定子组件（100）封胶方法、封胶工装和磁悬浮轴承，其中磁悬浮轴承定子组件（100）封胶方法包括以下步骤：a、装配好定子组件（100）后，将定子组件（100）安装到一封胶工装内，且定子组件（100）的外圆表面与封胶工装之间形成注胶空间（10）；b、安装好定子组件（100）后，向注胶空间（10）内注入胶液；c、注胶完毕后，将装有定子组件（100）的封胶工装进行加热，使得注胶空间内的胶液固化并包覆在定子组件（100）的外圆表面上。

Description

磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承
相关申请
本申请要求2017年10月20日申请的，申请号为201710985827.6，名称为“磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及磁悬浮轴承加工技术领域，更具体地说是涉及磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承。
背景技术
如图1至图4，现有径向磁悬浮轴承定子组件100包括磁钢1、固定架组件200、径向环4、铁芯5和线圈6，固定架组件包括磁钢固定架2和挡板3。装配时，首先将线圈6绕到铁芯5上，接着加热径向环4使其膨胀，再把绕制好线圈6的铁芯5塞进径向环4内，待其冷却后浸漆，风干。此时将磁钢固定架2通过螺钉紧固到挡板3上，然后把八块磁钢1按设计方向通过磁力吸附到挡板3上并通过磁钢固定架2定位。接着，通过专用工装在保证同轴度的同时，将磁钢及固定架组件缓慢贴合到已经浸漆风干的径向环4上，完成装配。由于在这一过程中，磁钢1仅通过磁力完成定位、紧固和连接，且装配过程中，由于磁钢1磁性较强，不可避免会存在震动和冲击，所以在制造过程中经常出现磁钢1脱出或发生位移的现象，而一旦出现类似情况，由于已经装配好，留存的缝隙过小，且受其它磁钢1磁场的影响，较难将脱出或发生位移的磁钢1归位，从而严重影响径向磁悬浮轴承的装配精度和制造效率。而且轴向方向上不宜采用机械连接，否则可能压坏磁钢或出现新的定位和装配问题。
发明内容
本申请要解决的技术问题是提供一种磁悬浮轴承定子组件封胶方法、封胶工装和磁悬浮轴承，能够更加牢固的固定磁钢，避免了在制造过程中出现磁钢脱出或发生位移的现象。
本申请的技术方案为：提供一种磁悬浮轴承定子组件封胶方法，包括以下步骤：
a、装配好定子组件后，将所述定子组件安装到一封胶工装内，且所述定子组件的外圆 表面与所述封胶工装之间形成注胶空间；
b、安装好定子组件后，向所述注胶空间内注入胶液；
c、注胶完毕后，将装有定子组件的封胶工装进行加热，使得所述注胶空间内的胶液固化并包覆在所述定子组件的外圆表面上。
在其中一实施例中，步骤b中，所述胶液还会注满所述定子组件内部的间隙，步骤c中，还会使得所述定子组件内部的间隙内的胶液固化。
在其中一个实施例中，步骤a中，所述定子组件安装到封胶工装内的步骤包括：
a1、将所述定子组件放置在所述封胶工装的工装径向环内；
a2、将所述封胶工装的工装轴穿设在工装径向环和定子组件中，使所述工装轴的第一段伸出工装径向环、所述工装轴的第二段与定子组件的内圆相配合、以及所述工装轴的第三段与定子组件的挡板接触，且所述定子组件的外圆与所述工装径向环的内圆为间隙配合；
a3、将所述封胶工装的工装盖板固定在工装径向环的一端，使所述工装盖板与定子组件的线圈压紧贴合以及所述工装径向环另一端的环形承载部与定子组件的挡板压紧贴合，以在所述工装径向环的内圆表面、定子组件的外圆表面和工装盖板内表面之间形成所述注胶空间，将所述工装轴的第一段穿过工装盖板中间的第一通孔和第二通孔，所述工装轴的第二段与工装盖板上的第一通孔相配合。
在其中一个实施例中，步骤b中，所述胶液通过所述工装盖板上的注胶孔注入所述注胶空间内，且注胶空间内的空气通过工装盖板上的排气孔排出。
在其中一个实施例中，所述胶液通过加压方式注入注胶空间内。
在其中一个实施例中，步骤a之前，在所述工装径向环的内圆表面和工装盖板的内表面上刷脱模剂。
在其中一个实施例中，步骤c中，所述胶液需加热到该胶液的热固温度，以使该胶液固化。
在其中一个实施例中，步骤c中，所述封胶工装在加热装置中进行加热，加热后再进行保温，保温后再将封胶工装从加热装置中拿出进行冷却。
在其中一个实施例中，所述加热装置为烤箱。
在其中一个实施例中，所述胶液采用热固性塑料。
在其中一个实施例中，所述热固性塑料为环氧树脂。
本申请还提供一种用于上述所述的磁悬浮轴承定子组件封胶方法的封胶工装，包括工装径向环、工装盖板和工装轴，所述工装盖板固定在所述工装径向环的一端，所述工装径 向环的另一端设置有环形承载部，定子组件放置在工装径向环内且所述环形承载部与定子组件的挡板压紧贴合以及所述工装盖板与定子组件的线圈压紧贴合，所述工装轴穿设在所述工装径向环、定子组件和工装盖板中且工装轴与工装盖板相抵接，所述工装径向环的内圆表面、定子组件的外圆表面和工装盖板内表面之间形成注胶空间。
在其中一个实施例中，所述工装盖板上设置有与注胶空间连通的注胶孔和排气孔。
在其中一个实施例中，所述工装轴包括依次连接的第一段、第二段和第三段，所述第一段、第二段和第三段的外径依次增大，所述工装盖板中间设有同轴且相连通的第一通孔和第二通孔，所述第一通孔直径大于第二通孔直径且第一通孔靠近定子组件，所述工装轴的第一段穿过工装盖板上的第一通孔和第二通孔，所述工装轴的第二段与定子组件的内圆和第一通孔相配合，所述工装轴的第三段与定子组件的挡板接触。
在其中一个实施例中，所述工装径向环的内圆表面和工装盖板的内表面上刷有脱模剂。
在其中一个实施例中，所述工装盖板通过螺栓固定在所述工装径向环上。
在其中一个实施例中，所述工装轴的第一段与所述第二通孔的孔壁之间具有间距。
在其中一个实施例中，所述工装轴的第二段与所述定子组件的内圆为间隙配合。
在其中一个实施例中，所述定子组件的外圆与所述工装径向环的内圆为间隙配合。
本申请还提供一种磁悬浮轴承，包括定子组件，所述定子组件装配好后通过上述所述的封胶方法进行加工。
本申请将定子组件装配好后放进封胶工装中，然后向注胶空间内注入胶液，加热封胶工装使胶液固化并包覆在定子组件的外圆表面上，这样可以在定子组件的外圆表面上包覆一层固体胶，能够更加牢固的固定磁钢，避免了在制造过程中出现磁钢脱出或发生位移的现象，保证了磁悬浮轴承的装配精度和制造效率。另外，通过该封胶方法在定子组件的外圆表面上包覆固体胶，以及定子组件内部的间隙内填满固体胶，提高了磁悬浮轴承产品的制造稳定性，替代了传统的浸漆工艺，可以起到保护定子组件的作用，从而提升产品耐腐蚀性能，提升定子组件的使用寿命。
附图说明
图1为现有技术中磁悬浮轴承定子组件的固定架组件结构图；
图2为图1中A-A向的剖视图；
图3为现有技术中磁悬浮轴承定子组件结构图；
图4为图3中B-B向的剖视图；
图5为本申请中磁悬浮轴承定子组件安装在封胶工装中的示意图；
图6为图3中C-C向的剖视图；
图7为本申请中磁悬浮轴承定子组件夹在环形承载部和工装盖板之间的示意图。
具体实施方式
正如背景技术中所述的虽然现有技术中磁钢可以依靠磁力吸附在保持架上，但因为将定子组件安装到应用部件的过程中不可避免的存在冲击和振动，时常发生磁钢脱落或被震飞的现象，而再想把磁钢一片片放回去，由于残留在定子组件内部的其它磁钢磁力的影响，非常难以精准放回原位，严重降低了生产效率和制造精度。而如果改用机械限位的方法将增加结构的复杂程度，并出现新的定位和装配问题。
因此为了更好的固定磁钢，如图5至图7，本申请实施例中提出一种磁悬浮轴承定子组件封胶方法，包括以下步骤：
a、装配好定子组件后，将定子组件安装到一封胶工装内，且定子组件的外圆表面与封胶工装之间形成注胶空间10；
b、安装好定子组件后，向注胶空间10内注入胶液；
c、注胶完毕后，将装有定子组件的封胶工装进行加热，使得胶液固化并包覆在定子组件的外圆表面上。通过以上步骤可以在定子组件的外圆表面上包覆固体胶，这样能够更加牢固的固定磁钢，避免了在制造过程中出现磁钢脱出或发生位移的现象，保证了磁悬浮轴承的装配精度和制造效率。
另外，在步骤b中，胶液还会注满定子组件内部的间隙(这里定子组件内部的间隙包括磁钢分别与磁钢固定架、挡板、径向环之间的间隙，铁芯与径向环之间的间隙，以及线圈与铁芯之间的间隙)，这样在步骤c中，还会使得定子组件内部的间隙内的胶液固化。这样通过在定子组件的外圆表面上包覆固体胶，以及定子组件内部的间隙内填满固体胶，提高了磁悬浮轴承产品的制造稳定性。
下面对上述封胶方法详细说明：
步骤a中，定子组件安装到封胶工装内的步骤包括：
a1、将定子组件放置在封胶工装的工装径向环7内；
a2、将封胶工装的工装轴9穿设在工装径向环7和定子组件中，使工装轴9的第一段91伸出工装径向环7、工装轴9的第二段92与定子组件的内圆相配合、以及工装轴9的第三段93与定子组件的挡板3接触，且定子组件的外圆与工装径向环7的内圆为间隙配合；
a3、将封胶工装的工装盖板8固定在工装径向环7的一端，使工装盖板8与定子组件的线圈6压紧贴合以及工装径向环7另一端的环形承载部71与定子组件的挡板3压紧贴合，以在工装径向环7的内圆表面、定子组件的外圆表面和工装盖板8内表面之间形成注胶空间10，将工装轴9的第一段91穿过工装盖板8中间的第一通孔83和第二通孔84(参考图6和图7)，且工装轴9的第二段92与工装盖板8上的第一通孔83相配合(参考图6和图7)。
步骤b中，胶液通过工装盖板8上的注胶孔81以加压方式注入注胶空间10内，而注胶空间10内的空气则通过工装盖板8上的排气孔82排出。
步骤c中，胶液需加热到该胶液的热固温度，从而使该胶液固化。封胶工装是在加热装置中进行加热的，加热后再进行保温，保温后再将封胶工装从加热装置中拿出进行冷却，完成封胶过程，冷却后将定子组件从封胶工装中取出即可，优选加热装置为烤箱。
步骤a之前，需要在工装径向环7的内圆表面和工装盖板8的内表面上刷脱模剂。
本实施例中胶液采用热固性塑料，优选热固性塑料为环氧树脂。这类塑料的热稳定性高，绝缘性能好，强度高，完全可以替代磁悬浮轴承制造过程中的浸漆工艺，从而简化生产流程。而且由于浸漆用的漆料大都会与保护轴承(一种磁悬浮系统必须的保护机构)中的润滑油发生化学反应进而腐蚀保护轴承，而环氧树脂等热固性塑料的化学性能极其稳定，故还能起到提升磁悬浮系统整体可靠性的作用。另外，由于磁悬浮轴承很可能应用在恶劣的化学环境当中，例如空调压缩机或核电冷却水泵，长期浸没在冷媒、冷冻油等液体当中，而铁芯在现有技术中仅有一层薄漆保护，长时间后容易发生电化学腐蚀，而本申请定子组件整个包裹在了化学性质极其稳定的环氧树脂当中，提高了磁悬浮轴承的整体可靠性。另外，环氧树脂是良好的金属粘接剂，封胶后的磁钢将可以被很好的固定，且环氧树脂导热率是空气的100倍，使得磁悬浮轴承散热更好，提升磁悬浮轴承服役性能，而且环氧树脂电气绝缘性能和防腐蚀性能也很优秀。
如图5至图7，本申请实施例中还提出用于上述磁悬浮轴承定子组件封胶方法的封胶工装，该封胶工装包括工装径向环7、工装盖板8和工装轴9，工装盖板8固定在工装径向环7的一端，工装径向环7的另一端设置有环形承载部71。本实施例中工装盖板8上设置有螺纹通孔，工装径向环7上设置有螺纹盲孔，工装盖板8通过螺栓固定在工装径向环7上。定子组件放置在工装径向环7内且工装盖板8与定子组件的线圈6压紧贴合以及环形承载部71与定子组件的挡板3压紧贴合(即定子组件夹在环形承载部和工装盖板之间)，以在轴向方向上将定子组件进行定位。工装轴9穿设在工装径向环7、定子组件和工装盖板8中且工装轴9与工装盖板8相抵接，以在径向方向上将定子组件进行定位，这样定子 组件在该封胶工装内轴向和径向均有定位，从而不需要增加额外的安装定位工序。工装径向环7的内圆表面、定子组件的外圆表面和工装盖板8内表面之间形成注胶空间10，本实施例中定子组件的外圆与工装径向环的内圆为间隙配合，参考图7，而且定子组件的线圈6是凸出铁芯5的(即定子组件的外圆表面为阶梯面)，这样铁芯5与工装盖板8之间会有间距形成空腔，该空腔与定子组件的外圆和工装径向环的内圆之间的间隙是相连通的，从而形成注胶空间。
在进行封胶时，向注胶空间内注入胶液，胶液会注满注胶空间和定子组件内部的间隙，注胶完毕后，将装有定子组件的封胶工装进行加热，使得注胶空间内的胶液固化并包覆在定子组件的外圆表面上，以及定子组件内部的间隙内的胶液固化，这样通过该封胶工装进行注胶可以在定子组件的外圆表面上包覆固体胶，能够更加牢固的固定磁钢，避免了在制造过程中出现磁钢脱出或发生位移的现象，保证了磁悬浮轴承的装配精度和制造效率。同时通过在定子组件的外圆表面上包覆固体胶，以及定子组件内部的间隙内填满固体胶，提高了磁悬浮轴承产品的制造稳定性。
工装盖板8上设置有与注胶空间10连通的注胶孔81和排气孔82，注胶时，胶液通过注胶孔81加压注入注胶空间10内，而注胶空间10内的空气从排气孔82排出。
参考图6，工装轴9包括依次连接的第一段91、第二段92和第三段93，第一段91、第二段92和第三段93的外径依次增大，第一段91、第二段92和第三段93为一体成型。工装盖板8中间设有同轴且相连通的第一通孔83和第二通孔84，第一通孔83直径大于第二通孔84直径且第一通孔83靠近定子组件。工装轴9的第一段91穿过工装盖板8上的第一通孔83和第二通孔84，工装轴9的第二段92与定子组件的内圆和第一通孔83相配合，通过工装轴9的第二段92与第一通孔83相配合限制了工装轴在径向方向上的移动(以图6中为例安装好工装轴后，该工装轴只能向左退出，而无法再向右、向上或向下移动)，从在径向方向上对定子组件进行定位。工装轴的第三段93与定子组件的挡板3接触。本实施例中，工装轴的第一段91与第二通孔84的孔壁之间具有间距，工装轴的第二段92与定子组件的内圆和第一通孔83都为间隙配合。
工装径向环7的内圆表面和工装盖板8的内表面上刷有脱模剂。
本申请实施例中还提供一种磁悬浮轴承，包括定子组件，定子组件装配好后通过上述的封胶方法进行加工。
本申请将定子组件装配好后放进封胶工装中进行注入胶液，胶液固化后形成包覆在定子组件的外圆表面上的固体胶来达到定位以及固定磁钢位置的目的。通过在定子组件的外圆表面上包覆固体胶，以及定子组件内部的间隙内填满固体胶，提高了磁悬浮轴承产品的 制造稳定性。另外通过该封胶方法替代了传统的浸漆工艺，可以起到保护定子组件的作用，从而提升产品耐腐蚀性能，提升定子组件的使用寿命。
以上的具体实施例仅用以举例说明本申请的构思，本领域的普通技术人员在本申请的构思下可以做出多种变形和变化，这些变形和变化均包括在本申请的保护范围之内。

Claims (20)

  1. 一种磁悬浮轴承定子组件封胶方法，其特征在于，包括以下步骤：
    a、装配好定子组件(100)后，将所述定子组件安装到一封胶工装内，且所述定子组件的外圆表面与所述封胶工装之间形成注胶空间(10)；
    b、安装好定子组件后，向所述注胶空间内注入胶液；
    c、注胶完毕后，将装有定子组件的封胶工装进行加热，使得所述注胶空间内的胶液固化并包覆在所述定子组件的外圆表面上。
  2. 根据权利要求1所述的磁悬浮轴承定子组件封胶方法，其特征在于，步骤b中，所述胶液还会注满所述定子组件(100)内部的间隙，步骤c中，还会使得所述定子组件内部的间隙内的胶液固化。
  3. 根据权利要求1或2所述的磁悬浮轴承定子组件封胶方法，其特征在于，步骤a中，所述定子组件(100)安装到封胶工装内的步骤包括：
    a1、将所述定子组件放置在所述封胶工装的工装径向环(7)内；
    a2、将所述封胶工装的工装轴(9)穿设在工装径向环和定子组件中，使所述工装轴的第一段(91)伸出工装径向环、所述工装轴的第二段(92)与定子组件的内圆相配合、以及所述工装轴的第三段(93)与定子组件的挡板接触，且所述定子组件的外圆与所述工装径向环的内圆为间隙配合；
    a3、将所述封胶工装的工装盖板(8)固定在工装径向环的一端，使所述工装盖板与定子组件的线圈(6)压紧贴合以及所述工装径向环另一端的环形承载部(71)与定子组件的挡板(3)压紧贴合，以在所述工装径向环的内圆表面、定子组件的外圆表面和工装盖板内表面之间形成所述注胶空间(10)，将所述工装轴的第一段穿过工装盖板中间的第一通孔(83)和第二通孔(84)，所述工装轴的第二段与工装盖板上的第一通孔相配合。
  4. 根据权利要求3所述的磁悬浮轴承定子组件封胶方法，其特征在于，步骤b中，所述胶液通过所述工装盖板(8)上的注胶孔(81)注入所述注胶空间(10)内，且注胶空间内的空气通过工装盖板上的排气孔(82)排出。
  5. 根据权利要求4所述的磁悬浮轴承定子组件封胶方法，其特征在于，所述胶液通过加压方式注入注胶空间(10)内。
  6. 根据权利要求3所述的磁悬浮轴承定子组件封胶方法，其特征在于，步骤a之前，在所述工装径向环(7)的内圆表面和工装盖板(8)的内表面上刷脱模剂。
  7. 根据权利要求1所述的磁悬浮轴承定子组件封胶方法，其特征在于，步骤c中，所 述胶液需加热到该胶液的热固温度，以使该胶液固化。
  8. 根据权利要求1、2或7所述的磁悬浮轴承定子组件封胶方法，其特征在于，步骤c中，所述封胶工装在加热装置中进行加热，加热后再进行保温，保温后再将封胶工装从加热装置中拿出进行冷却。
  9. 根据权利要求8所述的磁悬浮轴承定子组件封胶方法，其特征在于，所述加热装置为烤箱。
  10. 根据权利要求1所述的磁悬浮轴承定子组件封胶方法，其特征在于，所述胶液采用热固性塑料。
  11. 根据权利要求10所述的磁悬浮轴承定子组件封胶方法，其特征在于，所述热固性塑料为环氧树脂。
  12. 一种用于权利1至11中任一项所述的磁悬浮轴承定子组件封胶方法的封胶工装，其特征在于，包括工装径向环(7)、工装盖板(8)和工装轴(9)，所述工装盖板固定在所述工装径向环的一端，所述工装径向环的另一端设置有环形承载部(71)，定子组件(100)放置在工装径向环内且所述环形承载部与定子组件的挡板(3)压紧贴合以及所述工装盖板与定子组件的线圈(6)压紧贴合，所述工装轴穿设在所述工装径向环、定子组件和工装盖板中且工装轴与工装盖板相抵接，所述工装径向环的内圆表面、定子组件的外圆表面和工装盖板内表面之间形成注胶空间(10)。
  13. 根据权利要求12所述的封胶工装，其特征在于，所述工装盖板(8)上设置有与注胶空间(10)连通的注胶孔(81)和排气孔(82)。
  14. 根据权利要求12或13所述的封胶工装，其特征在于，所述工装轴(9)包括依次连接的第一段(91)、第二段(92)和第三段(93)，所述第一段、第二段和第三段的外径依次增大，所述工装盖板(8)中间设有同轴且相连通的第一通孔(83)和第二通孔(84)，所述第一通孔直径大于第二通孔直径且第一通孔靠近定子组件，所述工装轴的第一段穿过工装盖板上的第一通孔和第二通孔，所述工装轴的第二段与定子组件的内圆和第一通孔相配合，所述工装轴的第三段与定子组件的挡板(3)接触。
  15. 根据权利要求12或13所述的封胶工装，其特征在于，所述工装径向环(7)的内圆表面和工装盖板(8)的内表面上刷有脱模剂。
  16. 根据权利要求12或13所述的封胶工装，其特征在于，所述工装盖板(8)通过螺栓固定在所述工装径向环(7)上。
  17. 根据权利要求12或13所述的封胶工装，其特征在于，所述工装轴(9)的第一段(91)与所述第二通孔(84)的孔壁之间具有间距。
  18. 根据权利要求12或13所述的封胶工装，其特征在于，所述工装轴(9)的第二段(92)与所述定子组件的内圆为间隙配合。
  19. 根据权利要求12或13所述的封胶工装，其特征在于，所述定子组件的外圆与所述工装径向环(7)的内圆为间隙配合。
  20. 一种磁悬浮轴承，包括定子组件，其特征在于，所述定子组件装配好后通过权利要求1至11中任一项所述的封胶方法进行加工。
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