Rotor inner diameter machining device and method

Abstract

The invention provides an inner diameter machining device and method for a rotor, and the device comprises a portal frame; the bottom plate is connected below the portal frame; the object placing plate is located on one side of the bottom plate and arranged opposite to the bottom plate, the object placing plate comprises at least one shaft core hole, and the rotor can be arranged on the object placing plate; the first guide shafts are connected between the bottom plate and the storage plate, and the bottom plate and the storage plate have a relative motion state based on the first guide shafts; the inner diameter shaft core is parallel to the first guide shaft, the inner diameter shaft core, the shaft core hole and the rotor which are matched with one another are coaxial, the first end of the inner diameter shaft core is fixed to the bottom plate, and the second end of the inner diameter shaft core penetrates through the shaft core hole and is at least partially located in the inner diameter of the rotor. The deformation quantity of the inner diameter of the rotor in the machining process can be reduced, and the straightness of the inner diameter of the rotor is improved.

Description

Technical Field

[0001] The present invention relates to the field of compressors, and more particularly, to an inner diameter processing device and method for a rotor. Background Art

[0002] The existing rotor processing flow successively includes: stamping, heat treatment, rotor die casting, balance weight riveting, inner diameter extrusion, inner diameter straightening, rotor turning, rotor inner and outer diameter inspection, and rotor packing.

[0003] During the rotor die casting process, the inner diameter of the rotor expands thermally and becomes larger as the molten aluminum liquid enters the iron core slot, resulting in a large deformation of the inner diameter of the rotor during the die casting process. The inner diameter extrusion process is used to correct the deformation of the inner diameter of the rotor. The existing rotor inner diameter extrusion method enters the inside of the rotor inner diameter through the rotor inner diameter extrusion tool, and the extrusion tool exits after the inner diameter of the rotor is extruded and processed.

[0004] However, although the inner diameter extrusion process can slightly reduce the deformation of the inner diameter of the rotor, there are still a large number of rotors that cannot pass the inspection in one go after inner diameter extrusion and need further inner diameter straightening. In addition, the large deformation of the rotor inner diameter increases the operation difficulty of inner diameter extrusion.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0006] In view of this, the present invention provides an inner diameter processing device and method for a rotor, so as to at least solve the problems of excessive deformation and difficult correction during the existing rotor processing.

[0007] On the one hand, an embodiment of the present invention provides an inner diameter processing device for a rotor, including:

[0008] A gantry;

[0009] A bottom plate, which is connected to the lower part of the gantry;

[0010] A placement plate, which is located on one side of the bottom plate and is arranged opposite to the bottom plate. The placement plate includes at least one core hole, and the rotor can be placed on the placement plate;

[0011] At least one first guiding shaft, which is connected between the bottom plate and the placement plate, and the bottom plate and the placement plate have a relative movement state based on the first guiding shaft;

[0012] At least one inner diameter shaft core, the inner diameter shaft core is parallel to the first guiding shaft, the mutually cooperating inner diameter shaft core, shaft core hole and rotor are coaxial, the first end of the inner diameter shaft core is fixed to the bottom plate, and the second end of the inner diameter shaft core has a state of passing through the shaft core hole and at least partially located inside the inner diameter of the rotor.

[0013] In some embodiments, the inner diameter processing device of the rotor further includes:

[0014] A first sleeve, the first sleeve is fixed to the side of the placing plate facing away from the bottom plate, the first sleeve is coaxial with the inner diameter shaft core, and the first sleeve has an interference fit with the inner diameter of the end ring of the rotor.

[0015] In some embodiments, the inner diameter processing device of the rotor further includes:

[0016] A boosting cylinder, the boosting cylinder is located between the placing plate and the bottom plate, and drives the bottom plate away from the placing plate;

[0017] The bottom plate includes at least one first guiding hole penetrating through the bottom plate, the first end of the first guiding shaft is fixed to the placing plate, and the second end of the first guiding shaft can slide up and down through the first guiding hole.

[0018] In some embodiments, the inner diameter processing device of the rotor further includes:

[0019] A second sleeve, the second sleeve is suspended above the placing plate, the second sleeve is coaxial with the inner diameter shaft core, the second sleeve has a clearance fit with the inner diameter shaft core, and the second sleeve has an interference fit with the inner diameter of the end ring of the rotor;

[0020] A sleeve driving member, which drives the sleeve to axially approach or move away from the rotor on the placing plate.

[0021] In some embodiments, the inner diameter processing device of the rotor further includes:

[0022] A second guiding shaft, the second guiding shaft is parallel to the first guiding shaft and is connected between the gantry and the bottom plate;

[0023] A top plate, the top plate is disposed opposite to the placing plate, and the second sleeve is fixed to the side of the top plate facing the placing plate;

[0024] The top plate is slidably sleeved on the second guiding shaft, and the sleeve driving member drives the top plate to axially move.

[0025] In some embodiments, the inner diameter processing device of the rotor further includes:

[0026] An axial driving member, the axial driving member drives the bottom plate to drive the placing plate to axially move;

[0027] A water tank, the water tank is located below the gantry, and the water tank contains demineralized water;

[0028] The bottom plate is lowered so that the rotor on the storage plate has a cooling state under the surface of the demineralized water.

[0029] In some embodiments, the inner diameter processing device of the rotor further comprises:

[0030] The fixing piece is connected to one side of the storage plate where the first sleeve is placed. The fixing piece is U-shaped. The end surface of the first sleeve close to the storage plate is detachably fixed to the U-shaped recess of the fixing piece.

[0031] In some embodiments, the inner diameter processing device of the rotor further comprises:

[0032] A rotating rod, a stopper and a rotating driving member, wherein the stopper is connected to the rotating rod, and the rotating driving member drives the rotating rod to rotate, thereby driving the stopper to be inserted into or leave between the bottom plate and the storage plate.

[0033] On the other hand, an embodiment of the present invention further provides a method for machining the inner diameter of a rotor, using the above-mentioned inner diameter machining device of the rotor, the method for machining the inner diameter of the rotor includes:

[0034] S1. placing the rotor to be processed on a placing plate;

[0035] S2, the bottom plate and the storage plate are close to each other so that the second end of the inner diameter shaft core passes through the shaft core hole of the storage plate;

[0036] S3, sleeve the demoulded rotor onto the inner diameter shaft core; wherein the inner diameter shaft core and the inner diameter of the rotor are transitionally matched;

[0037] S4. After the rotor is cooled, the bottom plate and the storage plate move away from each other to drive the inner diameter shaft core to leave the inner diameter of the rotor.

[0038] In some embodiments, after S2, the step further includes:

[0039] The driving bottom plate drives the rotor located on the storage plate to be immersed in ice-cold desalted water to cool the rotor.

[0040] The inner diameter processing device and method of the rotor of the present invention inserts the inner diameter shaft core into the inner diameter of the rotor after die-casting, and makes the inner diameter shaft core and the inner diameter of the rotor transitionally fit. After the inner diameter of the rotor contacts the inner diameter shaft core, it shrinks regularly along the inner diameter shaft core, thereby reducing the inner diameter deformation of the rotor, replacing the inner diameter extrusion process in the prior art, reducing the difficulty in correcting the inner diameter deformation of the rotor, improving the straightness of the inner diameter of the rotor, and reducing the preparation cost of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings here are incorporated into and constitute a part of this specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0042] Figure 1 is a schematic diagram of a state of an inner diameter processing device for a rotor provided by the present invention;

[0043] Figure 2 is another schematic diagram of a state of an inner diameter processing device for a rotor provided by the present invention;

[0044] Figure 3 is a flowchart of the steps of an inner diameter processing method for a rotor provided by the present invention.

[0045] Reference numerals:

[0046] 10. Base plate;

[0047] 20. Object placing plate;

[0048] 30. Rotor;

[0049] 40. First guiding shaft;

[0050] 50. Inner diameter shaft core;

[0051] 60. First sleeve;

[0052] 70. Fixing member. Detailed implementation manners

[0053] Now, example embodiments will be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this invention will be thorough and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus their repeated description will be omitted.

[0054] The terms "first", "second", and the like used in the specific description do not denote any order, quantity, or importance, but are only used to distinguish different components. In addition, in the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for convenience of description and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0055] It should be noted that, without conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0056] In one aspect, as Figure 1 and Figure 2 shown, an embodiment of the present invention provides an inner diameter processing device for a rotor, including: a gantry, a bottom plate 10, a placement plate 20, at least one first guide shaft 40, and at least one inner diameter shaft core 50.

[0057] Specifically, the bottom plate 10, the placement plate 20, the first guide shaft 40, and the inner diameter shaft core 50 can all be located inside the gantry to facilitate the processing of the inner diameter of the rotor.

[0058] Specifically, the bottom plate 10 is connected to the lower part of the gantry through a connecting piece to facilitate carrying the placement plate 20, the first guide shaft 40, and the inner diameter shaft core 50.

[0059] Specifically, the placement plate 20 is located on one side of the bottom plate 10 and is arranged opposite to the bottom plate 10. Further, the placement plate 20 can be arranged parallel to the bottom plate 10. The placement plate 20 includes at least one shaft core hole, and the rotor 30 can be placed on the placement plate 20 for the inner diameter shaft core 50 to pass through the shaft core hole of the placement plate 20 and then enter the inner diameter of the rotor 30.

[0060] Specifically, the first guide shaft 40 is connected between the bottom plate 10 and the placement plate 20. The bottom plate 10 and the placement plate 20 have a relative motion state based on the first guide shaft 40, and the first guide shaft 40 plays a guiding role. That is, one end of the first guide shaft 40 is fixed to the placement plate 20, and the other end passes through the bottom plate 10, and the bottom plate 10 slides up and down on the first guide shaft 40; or one end of the first guide shaft 40 is fixed on the bottom plate 10, and the other end passes through the placement plate 20, and the placement plate 20 slides up and down on the first guide shaft 40. It can be understood that the positions of the bottom plate 10 and the placement plate 20 are not fixed, and in addition to the relative motion between the placement plate 20 and the bottom plate 10, there can be other motion states.

[0061] Specifically, the inner diameter shaft core 50 is parallel to the first guide shaft 40, and the mutually cooperating inner diameter shaft core 50, shaft core hole, and rotor 30 are coaxial to facilitate the insertion of the inner diameter shaft core 50 into the inner diameter of the rotor 30. The first end of the inner diameter shaft core 50 is fixed to the bottom plate 10, and the second end of the inner diameter shaft core 50 has a state of passing through the shaft core hole and at least partially located in the inner diameter of the rotor 30.

[0062] With the above settings, by inserting the inner diameter core 50 into the inner diameter of the rotor 30 after die-casting and making the inner diameter core 50 and the inner diameter of the rotor 30 in a transition fit, specifically, the size of the inner diameter core 50 is slightly larger than that of the inner diameter calibration plug gauge of the rotor. After the inner diameter of the rotor 30 contacts the inner diameter core 50, it contracts regularly along the inner diameter core 50, thereby reducing the deformation of the inner diameter of the rotor 30, replacing the inner diameter extrusion process in the prior art, reducing the problem of difficulty in correcting the deformation of the inner diameter of the rotor 30, improving the straightness of the inner diameter of the rotor 30, and reducing the manufacturing cost of the rotor 30. Further, the first-pass yield of the inner diameter of the rotor 30 is increased from the existing 30% to 90%.

[0063] In some embodiments, the hardness of the inner diameter core 50 is greater than that of the rotor 30, so as to improve the extrusion ability for the inner diameter of the rotor 30 during the contraction of the inner diameter of the rotor 30 and further reduce the deformation of the inner diameter of the rotor 30.

[0064] In some embodiments, the inner diameter processing device of the rotor may include a plurality of inner diameter cores 50 for simultaneously correcting the inner diameter deformation of a plurality of rotors 30, thereby improving the manufacturing efficiency of the rotors 30.

[0065] In some embodiments, the temperature difference when the rotor 30 and the inner diameter core 50 are in contact is greater than 120 degrees Celsius, so as to quickly cool down the rotor 30.

[0066] Continue to refer to Figure 1 and Figure 2 , in some embodiments, the inner diameter processing device of the rotor further includes: a first sleeve 60. The first sleeve 60 is fixed to the side of the placement plate 20 away from the bottom plate 10. The first sleeve 60 is coaxial with the inner diameter core 50, and the first sleeve 60 has an interference fit with the inner diameter of the end ring of the rotor 30. Specifically, the outer diameter of the first sleeve 60 has an interference fit with the inner diameter of the end ring of the rotor 30, and the inner diameter of the first sleeve 60 has a transition fit with the outer diameter of the inner diameter core 50. The above settings enable the first sleeve 60 to support the rotor 30, so that the inner diameter core 50 can be inserted into and withdrawn from the inner diameter of the rotor 30, and provide a guiding function for the relative movement between the inner diameter core 50 and the inner diameter of the rotor 30.

[0067] In some embodiments, the inner diameter processing device of the rotor further includes: a booster cylinder. The booster cylinder is located between the placement plate 20 and the bottom plate 10 and drives the bottom plate 10 away from the placement plate 20. The above setting of the booster cylinder can make the bottom plate 10 and the placement plate 20 move away from each other, and make the bottom plate 10 move from the first end to the second end of the first guide shaft 40, while the placement plate 20 is always located at the first end, thereby driving the inner diameter core 50 to withdraw from the inner diameter of the rotor 30.

[0068] In some embodiments, the bottom plate 10 includes at least one first guiding hole penetrating through the bottom plate 10. The first end of the first guiding shaft 40 is fixed to the object placing plate, and the second end of the first guiding shaft 40 can slide up and down through the first guiding hole. The number of the first guiding holes is the same as that of the first guiding shafts 40 to facilitate their cooperation. Optionally, the bottom plate 10 may include a plurality of first guiding holes for accommodating a plurality of first guiding shafts 40 to improve the stability of the relative movement between the bottom plate 10 and the object placing plate 20.

[0069] In some embodiments, the inner diameter processing device of the rotor further includes: a second sleeve, which is suspended above the object placing plate, coaxial with the inner diameter shaft core, in clearance fit with the inner diameter shaft core, and in interference fit with the inner diameter of the end ring of the rotor; a sleeve driving member for driving the sleeve to axially approach or move away from the rotor on the object placing plate. The second sleeve is located at the other end of the rotor 30 relative to the first sleeve 60. When the object placing plate 20 approaches the bottom plate 10 and the depth of insertion of the inner diameter shaft core 50 into the rotor 30 does not meet the requirements, after the second sleeve above the rotor 30 is in interference connection with the end ring of the rotor 30, a downward pressure is applied to the rotor 30, so that the object placing plate 20 can be further lowered and the inner diameter shaft core 50 can completely pass through the inner diameter of the rotor 30.

[0070] In some embodiments, the inner diameter processing device of the rotor further includes: a second guiding shaft, which is parallel to the first guiding shaft 40 and is connected between the gantry and the bottom plate; a top plate, which is arranged opposite to the object placing plate, and the second sleeve is fixed on the side of the top plate facing the object placing plate; the top plate is slidably sleeved on the second guiding shaft, and the sleeve driving member drives the top plate to move axially.

[0071] In some embodiments, the inner diameter processing device of the rotor further includes: an axial driving member for driving the bottom plate 10 to drive the object placing plate to move axially; a water tank, which is located below the gantry. Demineralized water is provided in the water tank. When the bottom plate 10 descends, the rotor 30 on the object placing plate 20 is in a cooling state located below the water surface of the demineralized water. The provision of the water tank containing demineralized water can accelerate the cooling speed of the rotor 30 and improve the preparation efficiency of the rotor 30. Specifically, the axial driving member can be arranged on the gantry and connected to a driving connecting member to drive the bottom plate. The connecting member can be in the form of a connecting plate, a connecting rod, etc. Continuing to refer to Figure 1 and Figure 2 In some embodiments, the inner diameter processing device of the rotor further includes: a fixing member 70. The fixing member 70 is connected to the side of the object placing plate 20 where the first sleeve 60 is placed. The fixing member 70 is U-shaped, and the end face of the first sleeve 60 close to the object placing plate 20 is detachably fixed in the U-shaped concave portion of the fixing member 70. The fixing member 70 can improve the convenience of assembly and disassembly of the first sleeve 60 and the object placing plate 20.

[0072] In some embodiments, the inner diameter processing device of the rotor further includes: a rotating rod, a stopper, and a rotation driving member. The stopper is connected to the rotating rod, and the rotation driving member drives the rotating rod to rotate, driving the stopper to insert into or leave between the bottom plate 10 and the placing plate 20. Specifically, the rotating rod is fixed on the connecting member, the stopper is connected to the rotating rod, and corresponds to the position between the placing plate 20 and the bottom plate 10. When the rotor 30 is loaded on the inner diameter axis 50 of the placing plate 20, the rotation driving member rotates the rotating rod, and then drives the stopper to leave between the bottom plate 10 and the placing plate 20, and the placing plate 20 approaches the bottom plate 10 under the action of gravity. When the boosting cylinder drives the bottom plate 10 and the placing plate 20 to separate, at the same time the stopper rotates and inserts between the bottom plate 10 and the placing plate 20 to support the placing plate to prevent it from descending.

[0073] For the inner diameter processing device of the rotor of the present invention, by inserting the inner diameter axis 50 into the inner diameter of the rotor 30 after die-casting, and making the inner diameter of the inner diameter axis 50 and the rotor 30 in interference fit, after the inner diameter of the rotor 30 contacts the inner diameter axis 50, it contracts regularly along the inner diameter axis 50, thereby reducing the deformation amount of the inner diameter of the rotor 30, replacing the inner diameter extrusion process in the prior art, reducing the problem of difficult correction of the deformation amount of the inner diameter of the rotor 30, improving the straightness of the inner diameter of the rotor 30, and reducing the manufacturing cost of the rotor 30.

[0074] On the other hand, as Figure 3 shown, an embodiment of the present invention further provides a method for processing the inner diameter of a rotor, using the above-mentioned inner diameter processing device of the rotor. The method for processing the inner diameter of the rotor includes:

[0075] S1. Place the rotor 30 to be processed on the placing plate 20;

[0076] S2. The bottom plate 10 and the placing plate 20 approach each other so that the second end of the inner diameter axis 50 passes through the axis hole of the placing plate 20;

[0077] S3. Sleeve the demolded rotor 30 on the inner diameter axis 50; wherein, the inner diameter of the inner diameter axis 50 and the rotor 30 are in interference fit;

[0078] S4. After the rotor 30 cools down, the bottom plate 10 and the placing plate 20 move away from each other to drive the inner diameter axis 50 to leave the inner diameter of the rotor 30.

[0079] With the above settings, by inserting the inner diameter axis 50 into the inner diameter of the rotor 30 after die-casting demolding, and making the inner diameter of the inner diameter axis 50 and the rotor 30 in interference fit, after the inner diameter of the rotor 30 contacts the inner diameter axis 50, it contracts regularly along the inner diameter axis 50, thereby reducing the deformation amount of the inner diameter of the rotor 30, replacing the inner diameter extrusion process in the prior art, reducing the problem of difficult correction of the deformation amount of the inner diameter of the rotor 30, improving the straightness of the inner diameter of the rotor 30, and reducing the manufacturing cost of the rotor 30.

[0080] It should be noted that the above S1 to S4 are only labels of steps, which are used for convenient reference and to avoid repetition of words. Unless otherwise specified, the above and subsequent step labels will not limit the implementation order of each step of this method. In other embodiments, the above steps of this method can also be exchanged in the order of writing and implementation, and this is not limited thereto.

[0081] In some embodiments, after step S2, it further includes:

[0082] Drive the bottom plate 10 to drive the rotor 30 located on the placement plate 20 to immerse in the ice-cold demineralized water to cool the rotor 30. The above setting can accelerate the cooling speed of the rotor 30 and improve the preparation efficiency of the rotor 30.

[0083] It can be understood that the specific implementation manner and technical effects of the inner diameter processing method of this rotor can refer to the above-mentioned inner diameter processing device of the rotor, and will not be elaborated here.

[0084] In summary, for the inner diameter processing device and method of the rotor of the present invention, by inserting the inner diameter shaft core into the inner diameter of the rotor after die-casting, and making the inner diameter shaft core and the inner diameter of the rotor have an interference fit, the inner diameter of the rotor shrinks regularly along the inner diameter shaft core after contacting the inner diameter shaft core, thereby reducing the inner diameter deformation amount of the rotor, replacing the inner diameter extrusion process in the prior art, reducing the problem of difficult correction of the inner diameter deformation amount of the rotor, improving the straightness of the inner diameter of the rotor, and reducing the preparation cost of the rotor.

[0085] The above content is a further detailed description of the present invention in combination with specific optional implementation manners. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A rotor inner diameter machining device, characterized in that: include: Gantry; A bottom plate, the bottom plate is connected below the gantry; a storage plate, the storage plate being arranged opposite to the bottom plate, the storage plate comprising at least one shaft core hole, and the rotor being arranged on the storage plate; at least one first guide shaft, wherein the first guide shaft is connected between the bottom plate and the storage plate, and the bottom plate and the storage plate have a relative motion state based on the first guide shaft; At least one inner diameter shaft core, the inner diameter shaft core is parallel to the first guide shaft, the inner diameter shaft core, the shaft core hole and the rotor are coaxial with each other, the first end of the inner diameter shaft core is fixed to the base plate, and the second end of the inner diameter shaft core has a state of passing through the shaft core hole and at least partially located in the inner diameter of the rotor.

2. The rotor inner diameter machining device according to claim 1, characterized in that: Also includes: A first sleeve is fixed to a side of the storage plate away from the bottom plate, the first sleeve is coaxial with the inner diameter shaft core, and the first sleeve is interference fit with the inner diameter of the end ring of the rotor.

3. The rotor inner diameter machining device according to claim 1, characterized in that: Also includes: A booster cylinder is located between the storage plate and the bottom plate, and drives the bottom plate to move away from the storage plate.

4. The rotor inner diameter machining device according to claim 1, characterized in that: Also includes: A second sleeve, the second sleeve is suspended above the storage plate, the second sleeve is coaxial with the inner diameter shaft core, the second sleeve and the inner diameter shaft core are clearance-matched, and the second sleeve and the inner diameter of the end ring of the rotor are interference-fitted; The sleeve driving member drives the sleeve to axially approach or move away from the rotor on the storage plate.

5. The rotor inner diameter machining device according to claim 4, characterized in that: Also includes: A second guide shaft, the second guide shaft is parallel to the first guide shaft and connected between the gantry and the base plate; A top plate, the top plate is arranged opposite to the storage plate, and the second sleeve is fixed to a side of the top plate facing the storage plate; The top plate is slidably sleeved on the second guide shaft, and the sleeve driving member drives the top plate to move axially.

6. The rotor inner diameter machining device according to claim 1, characterized in that: Also includes: An axial driving member, driving the bottom plate to drive the storage plate to move axially; A water tank, the water tank is located below the gantry, and the water tank contains desalted water; The bottom plate is lowered so that the rotor on the storage plate is in a cooling state below the water surface of the desalted water.

7. The rotor inner diameter machining device according to claim 2, characterized in that: Also includes: A fixing member, wherein the fixing member is connected to a side of the storage plate where the first sleeve is placed, the fixing member is U-shaped, and the end surface of the first sleeve close to the storage plate is detachably fixed to the U-shaped recess of the fixing member.

8. The rotor inner diameter machining device according to claim 1, characterized in that: Also includes: A rotating rod, a stopper and a rotating driving member, wherein the stopper is connected to the rotating rod, and the rotating driving member drives the rotating rod to rotate, thereby driving the stopper to be inserted into or leave between the bottom plate and the storage plate.

9. A method for machining the inner diameter of a rotor, characterized in that: Using the inner diameter machining device of a rotor according to any one of claims 1 to 8, the inner diameter machining method of the rotor comprises: S1, placing the rotor to be processed on the placing plate; S2, the bottom plate and the storage plate are close to each other so that the second end of the inner diameter shaft core passes through the shaft core hole of the storage plate; S3, sleeve the demoulded rotor onto the inner diameter shaft core; wherein the inner diameter shaft core and the inner diameter of the rotor are transitionally matched; S4. After the rotor is cooled, the bottom plate and the storage plate move away from each other to drive the inner diameter shaft core to leave the inner diameter of the rotor.

10. The method for machining the inner diameter of a rotor according to claim 9, characterized in that: After S2, it also includes: The bottom plate is driven to drive the rotor located on the storage plate to be immersed in ice-cold desalted water to cool the rotor.

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