Rotor shaft diameter optimization method, rotor shaft diameter and rotor

Abstract

The invention discloses a rotor shaft diameter optimization method, a rotor shaft diameter and a rotor, relates to the technical field of rotary mechanical engineering, and solves the problems that an electric jump value is out of tolerance and the reliability of a workpiece is reduced due to non-uniform material density of an electric jump area of the workpiece at present. The method comprises the following steps: continuously collecting the electrical jump value of an electrical jump region by using a measuring device, and generating a waveform curve of the electrical jump value changing along with a time period; when it is detected that the waveform curve is not matched with a preset waveform curve, an abnormal waveform curve is determined on the waveform curve, and an abnormal area is determined in the power trip area based on the abnormal waveform curve; a measuring device is used for continuously collecting the electricity jump value of the abnormal area, and a current abnormal waveform curve is generated; and when it is detected that the maximum difference value between the current abnormal waveform curve and the target waveform curve is larger than a target threshold value, a preset shaft sleeve is arranged on the electric trip area in a sleeving mode, and the target rotor shaft diameter is obtained.

Description

Technical Field

[0001] The present application belongs to the technical field of rotating mechanical engineering, and specifically, relates to a rotor shaft diameter optimization method, a rotor shaft diameter, and a rotor. Background Art

[0002] The shaft diameter of the rotating machinery rotor has an area of ​​20nm to 30nm for picking up the rotor amplitude characteristics. This area is called the electric jump area. Whether the electric jump area is qualified can be determined by the size of the electric jump value. The electric jump value is the change value of the electrical characteristics during the circular motion of the main shaft. It is often measured by a non-contact eddy current sensor. The API (American Petroleum Institute) standard stipulates that the qualified standard for the electric jump value is ≤6.35μm.

[0003] In the actual rotor production process, since the electric jump value is related to the magnetic permeability and electrical conductivity of the workpiece material, the electric jump value often exceeds the tolerance due to uneven material density in the electric jump area of ​​the workpiece, thereby reducing the reliability of the workpiece. Summary of the invention

[0004] In view of this, the present invention provides a rotor shaft diameter optimization method, a rotor shaft diameter and a rotor, the main purpose of which is to solve the current problem of excessive electric jump values ​​and reduced workpiece reliability due to uneven material density in the workpiece electric jump area.

[0005] According to a first aspect of the present application, a method for optimizing a rotor shaft diameter is provided, wherein an electrical jump zone is provided on the outer periphery of the rotor shaft diameter, comprising:

[0006] Continuously collecting the electric jump value of the electric jump area by using a measuring device, and generating a waveform curve of the electric jump value changing with a time period based on the continuously collected electric jump value of the electric jump area;

[0007] When it is detected that the waveform curve does not match the preset waveform curve, an abnormal waveform curve is determined on the waveform curve, and an abnormal area is determined in the electrical jump area based on the abnormal waveform curve;

[0008] Utilizing the measuring device to continuously collect the electrical jump value of the abnormal area, and generating a current abnormal waveform curve based on the continuously collected electrical jump value of the abnormal area;

[0009] When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold, a preset sleeve is sleeved on the electrical jump area to obtain a target rotor shaft diameter.

[0010] Optionally, when it is detected that the waveform curve does not match a preset waveform curve, determining an abnormal waveform curve on the waveform curve, and determining an abnormal area in the electrical jump area based on the abnormal waveform curve, comprises:

[0011] Determine a preset time interval, and calculate the difference between the corresponding electrical jump value on the waveform curve and the corresponding electrical jump value on the preset waveform curve at each preset time interval;

[0012] When it is continuously detected that the difference is greater than a preset threshold, the abnormal waveform curve is determined on the waveform curve, and a region corresponding to the abnormal waveform curve is marked in the electrical jump region as the abnormal region.

[0013] Optionally, the method further comprises:

[0014] When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is less than the target threshold value, a grinding tool is used to grind the abnormal area to obtain an updated electric jump area, and the measuring device is used to continuously collect the electric jump value of the updated electric jump area. Based on the continuously collected electric jump value of the updated electric jump area, an updated waveform curve is generated in which the electric jump value of the updated electric jump area changes with a time period, until it is detected that the updated waveform curve matches the preset waveform curve, then grinding of the abnormal area is stopped to obtain the target rotor shaft diameter.

[0015] Optionally, the method further comprises:

[0016] When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold, grinding other areas using a grinding tool, the other areas being areas in the electrical jump area except the abnormal area;

[0017] Utilizing the measuring device to continuously collect the electric jump value of the electric jump area, and obtaining a first waveform curve of the electric jump value changing with a time period;

[0018] When it is detected that the first waveform curve matches the preset waveform curve, the electric jump area after grinding is determined to be the target electric jump area, and the target rotor shaft diameter is obtained based on the target electric jump area.

[0019] Optionally, the method further comprises: sleeve-arranging a preset shaft sleeve before the electrical jump area;

[0020] Obtaining a preset grinding thickness, using a grinding device to grind the initial electric jump area of ​​the rotor shaft diameter according to the preset grinding thickness, and using a rolling device to roll the ground initial electric jump area to obtain the electric jump area;

[0021] The initial preset sleeve is obtained, and the initial preset sleeve is heated by the heating device to obtain the preset sleeve.

[0022] Optionally, after the preset shaft sleeve is sleeved on the electrical jump area, the method further comprises:

[0023] The outer circumference and end face of the preset sleeve are continuously polished by a polishing device, and the polished preset sleeve is continuously rolled by a rolling device until it is determined that the coaxiality between the axis of the preset sleeve and the axis of the rotor shaft diameter is within a preset coaxiality range.

[0024] According to a second aspect of the present application, a rotor shaft diameter is provided, using the rotor shaft diameter optimization method described in any one of the first aspects above, comprising a shaft diameter body and a shaft sleeve;

[0025] The shaft body includes an electrical jump area, and the shaft sleeve is sleeved on the electrical jump area.

[0026] Optionally, the material of the shaft diameter body is the same as that of the shaft sleeve.

[0027] Optionally, the difference between the length of the sleeve body and the length of the electrical jump zone is greater than a preset difference, and the thickness of the sleeve body is within a preset thickness range.

[0028] According to a third aspect of the present application, a rotor is provided, comprising a rotor shaft diameter according to any one of the above-mentioned second aspects.

[0029] By means of the above technical scheme, the present application provides a method for optimizing the rotor shaft diameter, firstly, a measuring device is used to continuously collect the electric jump values ​​in the electric jump zone, and a waveform curve of the electric jump values ​​changing with a time period is generated based on the continuously collected electric jump values ​​in the electric jump zone, then when it is detected that the waveform curve does not match the preset waveform curve, an abnormal waveform curve is determined on the waveform curve, and an abnormal area is determined in the electric jump zone based on the abnormal waveform curve, then the measuring device is used to continuously collect the electric jump values ​​in the abnormal area, and a current abnormal waveform curve is generated based on the continuously collected electric jump values ​​in the abnormal area, finally, the measuring device is used to continuously collect the electric jump values ​​in the abnormal area, and a current abnormal waveform curve is generated based on the continuously collected electric jump values ​​in the abnormal area; by arranging a preset shaft sleeve in the electric jump zone, a target electric jump zone is obtained, and since the preset shaft sleeve covers the area with uneven material density, and the material density of the outer periphery of the preset shaft sleeve is often relatively uniform, the problem of excessive electric jump values ​​and reduced workpiece reliability caused by uneven material density in the electric jump zone is solved.

[0030] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 This is a flow chart of a method for optimizing the rotor shaft diameter according to an embodiment of the present application;

[0033] Figure 2 This is a waveform curve of the change of the electrical jump value with the time period in a method for optimizing the rotor shaft diameter in an embodiment of the present application.

[0034] Figure 3 This is a schematic structural diagram of a rotor shaft diameter in an embodiment of the present application.

[0035] Description of Reference Numerals

[0036] 1. Shaft body; 2. Electric jump area; 3. Shaft sleeve; 4. Measuring device. DETAILED DESCRIPTION

[0037] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0038] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of the embodiments. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0039] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0040] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0041] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0042] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0043] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0044] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0045] Example 1

[0046] The embodiment of the present application provides a method for optimizing the rotor shaft diameter, wherein an electrical jump zone is provided on the outer periphery of the rotor shaft diameter, such as Figure 1 As shown, including:

[0047] 101. Continuously collect the electric jump values ​​of the electric jump zone using a measuring device, and generate a waveform curve showing the change of the electric jump values ​​with a time period based on the continuously collected electric jump values ​​of the electric jump zone.

[0048] In the embodiment of the present application, the measuring device is preferably a non-contact eddy current sensor, and the non-contact eddy current sensor is arranged above the electric jump area, such as Figure 3 As shown, a non-contact eddy current sensor is used to collect the electrical jump value in the electrical jump area.

[0049] 102. When it is detected that the waveform curve does not match the preset waveform curve, an abnormal waveform curve is determined on the waveform curve, and an abnormal area is determined in the electrical jump area based on the abnormal waveform curve.

[0050] 103. Continuously collect the electrical jump values ​​of the abnormal area using a measuring device, and generate a current abnormal waveform curve based on the continuously collected electrical jump values ​​of the abnormal area.

[0051] 104. When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold, a preset shaft sleeve is sleeved on the electrical jump area to obtain a target rotor shaft diameter.

[0052] The method provided in the embodiment of the present application first utilizes a measuring device to continuously collect electric jump values ​​in an electric jump zone, and generates a waveform curve of the electric jump values ​​changing with a time period based on the continuously collected electric jump values ​​in the electric jump zone; then, when it is detected that the waveform curve does not match the preset waveform curve, an abnormal waveform curve is determined on the waveform curve, and an abnormal area is determined in the electric jump zone based on the abnormal waveform curve; then, the measuring device is used to continuously collect electric jump values ​​in the abnormal area, and a current abnormal waveform curve is generated based on the continuously collected electric jump values ​​in the abnormal area; finally, the measuring device is used to continuously collect electric jump values ​​in the abnormal area, and a current abnormal waveform curve is generated based on the continuously collected electric jump values ​​in the abnormal area; a preset sleeve is sleeved in the electric jump zone to obtain a target electric jump zone; since the preset sleeve covers the area with uneven material density, and the material density on the periphery of the preset sleeve is often relatively uniform, the problem of excessive electric jump values ​​and reduced workpiece reliability due to uneven material density in the electric jump zone is solved.

[0053] Furthermore, the rotor shaft diameter optimization method provided in the embodiment of the present application specifically includes:

[0054] 101. Continuously collect the electric jump values ​​of the electric jump zone using a measuring device, and generate a waveform curve showing the change of the electric jump values ​​with a time period based on the continuously collected electric jump values ​​of the electric jump zone.

[0055] For example, based on the continuously collected electrical jump values, a waveform curve of the electrical jump value changing with the time period is generated, such as Figure 2 As shown, in Figure 2 It can be seen that the waveform curve first changes periodically and then begins to show an abnormal bulge at a certain point in time. After a period of time, the waveform curve returns to normal.

[0056] 102. When it is detected that the waveform curve does not match the preset waveform curve, an abnormal waveform curve is determined on the waveform curve, and an abnormal area is determined in the electrical jump area based on the abnormal waveform curve.

[0057] In an embodiment of the present application, a preset time interval is first determined, and the difference between the corresponding electrical jump value on the waveform curve and the corresponding electrical jump value on the preset waveform curve is calculated every preset time interval. Then, when the difference is continuously detected to be greater than the preset threshold, an abnormal waveform curve is determined on the waveform curve, and the area corresponding to the abnormal waveform curve is marked in the electrical jump area as an abnormal area.

[0058] 103. Continuously collect the electrical jump values ​​of the abnormal area using a measuring device, and generate a current abnormal waveform curve based on the continuously collected electrical jump values ​​of the abnormal area.

[0059] 104. When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold, a preset shaft sleeve is sleeved on the electrical jump area to obtain a target rotor shaft diameter.

[0060] In an embodiment of the present application, a preset time interval is obtained, and the difference between the electrical jump value corresponding to the current abnormal waveform curve and the electrical jump value corresponding to the target waveform curve is calculated at each preset time interval, thereby obtaining multiple differences, determining the maximum difference among the multiple differences, and comparing the maximum difference with the target threshold value. When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold value, a preset sleeve can be sleeved on the electrical jump area to obtain the target rotor shaft diameter. When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is less than the target threshold value, a grinding tool is used to grind the abnormal area to obtain an updated electrical jump area. A measuring device is used to continuously collect electrical jump values ​​for the updated electrical jump area, and an electrical value for the updated electrical jump area is generated based on the continuously collected electrical jump values ​​for the updated electrical jump area. An updated waveform curve whose jump value changes with a time period is detected, and grinding of the abnormal area is stopped until it is detected that the updated waveform curve matches the preset waveform curve to obtain the target rotor shaft diameter; or, when it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is less than the target threshold value, a grinding tool is used to grind the abnormal area to obtain an updated electric jump area, and the electric jump value of the updated electric jump area is continuously collected by a measuring device. When it is detected that one of the continuously collected electric jump values ​​is greater than the target electric jump value, the abnormal area is continued to be polished until it is detected that the continuously collected electric jump values ​​are all less than the target electric jump value, and the electric jump area after grinding is determined to be the target electric jump area, and then the target rotor shaft diameter is obtained based on the target electric jump area, and the target electric jump value can be 6.35μm.

[0061] Furthermore, according to actual conditions, when it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold, other areas can be polished using a polishing tool. The other areas are areas in the electric jump area except the abnormal area. Then, a measuring device is used to continuously collect the electric jump value of the electric jump area to obtain a first waveform curve in which the electric jump value changes with a time period. Finally, when it is detected that the first waveform curve matches the preset waveform curve, the polished electric jump area is determined to be the target electric jump area, and the target rotor shaft diameter is obtained based on the target electric jump area.

[0062] It should be noted that in the actual production process, the preset sleeve cannot be directly mounted on the electric jump area. Before the preset sleeve is mounted on the electric jump area, the electric jump area and the preset sleeve need to be processed, that is, the preset grinding thickness is obtained, and the initial electric jump area of ​​the rotor shaft diameter is ground by a grinding device according to the preset grinding thickness, and the initial electric jump area after grinding is rolled by a rolling device to obtain the electric jump area, and the initial preset sleeve is obtained. The initial preset sleeve is heated by a heating device to obtain the preset sleeve. The heating will cause the holes in the preset sleeve to expand. In the process of mounting the preset sleeve on the electric jump area, the temperature will slowly decrease, and the holes will slowly shrink as the temperature decreases. This process will make the connection between the preset sleeve and the electric jump area tighter. At the same time, in the process of mounting the preset sleeve on the electric jump area, the preset sleeve needs to be interference fit with the electric jump area.

[0063] In the embodiment of the present application, the grinding tool is preferably metallographic sandpaper, which refers to sandpaper specially used for metallographic analysis. The sandpaper has strong water resistance, and the abrasives include white corundum (aluminum oxide), silicon carbide, and mixed abrasives. The sandpaper is usually made of silicon carbide abrasives with uniform particle size and excellent grinding effect as the main abrasive. Most metallographic sandpapers are usually made of high-quality latex paper using an electrostatic sand-planting process. The electrostatic sand-planting process has the characteristics of uniform abrasive distribution, sharp grinding, and durability.

[0064] Specifically, after the preset sleeve is sleeved in the electric jump area, it is necessary to use a grinding device to continuously grind the outer circumference and end face of the preset sleeve, and use a rolling device to continuously roll the grinded preset sleeve until it is determined that the coaxiality of the axis of the preset sleeve and the axis of the rotor shaft diameter is within a preset coaxiality range. For example, the preset coaxiality range can be selected from 0 to 0.005 mm; the appearance quality of the outer circumference of the sleeve and the connection between the sleeve and other parts of the rotor shaft diameter is improved by grinding and rolling.

[0065] Furthermore, after obtaining the target rotor shaft diameter, the electric jump zone of the target rotor shaft diameter needs to be tested, that is, a measuring device needs to be used to continuously collect the electric jump values ​​of the electric jump zone, and a waveform curve of the electric jump values ​​changing with a time period is generated based on the continuously collected electric jump values ​​of the electric jump zone. Only when it is detected that the waveform curve matches the preset waveform curve can it be determined that the quality of the electric jump zone meets the standard, or, it can be determined whether the continuously acquired electric jump values ​​are ≤6.35μm. If they are all less than ≤6.35μm, it can also be determined that the quality of the electric jump zone meets the standard.

[0066] In an embodiment of the present application, a preset time interval is obtained, and the difference between the electrical jump value corresponding to the current abnormal waveform curve and the electrical jump value corresponding to the target waveform curve is calculated every preset time interval, thereby obtaining multiple differences, determining the maximum difference among the multiple differences, and comparing the maximum difference with the target threshold value. When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold value, the preset sleeve can be sleeved on the electrical jump area to obtain the target rotor shaft diameter. When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is less than the target threshold value, a grinding tool is used to grind the abnormal area to obtain an updated electrical jump area. A measuring device is used to continuously collect the electrical jump values ​​of the updated electrical jump area. Based on the continuously collected electrical jump values ​​of the updated electrical jump area, an updated waveform curve is generated in which the electrical jump values ​​of the updated electrical jump area change with a time period. When it is detected that the updated waveform curve matches the preset waveform curve, grinding of the abnormal area is stopped to obtain the target rotor shaft diameter.

[0067] Example 2

[0068] The present application embodiment provides a rotor shaft diameter, using the rotor shaft diameter optimization method, such as Figure 3 As shown, it includes a shaft body 1 and a shaft sleeve 3, the shaft body 1 includes an electric jump area 2, and the shaft sleeve 3 is sleeved in the electric jump area 2.

[0069] Specifically, the material of the shaft diameter body 1 is the same as that of the sleeve 3. At the same time, the difference between the length of the sleeve body 1 and the length of the electric jump area 2 is greater than a preset difference, and the thickness of the sleeve body 1 is within a preset thickness range.

[0070] The rotor shaft diameter provided in the embodiment of the present application includes a shaft diameter body and a shaft sleeve, wherein the shaft diameter body includes an electric jump area, and the shaft sleeve is sleeved in the electric jump area. By sleeved in the electric jump area, the part with uneven material density is covered, thereby improving the phenomenon of excessive electric jump value caused by uneven material density in the electric jump area of ​​the workpiece, thereby improving the quality of the rotor shaft diameter.

[0071] Furthermore, an embodiment of the present application also provides a rotor, including the above-mentioned rotor shaft diameter.

[0072] The rotor provided in the embodiment of the present application includes a rotor shaft diameter. The electric jump area included in the rotor shaft diameter has a relatively uniform material density, so that the rotor shaft diameter has good quality, and thus the rotor also has good quality and high reliability.

[0073] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A method for optimizing the rotor shaft diameter, wherein an electrical jump zone is provided on the outer periphery of the rotor shaft diameter, characterized in that: include: Continuously collecting the electric jump value of the electric jump area by using a measuring device, and generating a waveform curve of the electric jump value changing with a time period based on the continuously collected electric jump value of the electric jump area; When it is detected that the waveform curve does not match the preset waveform curve, an abnormal waveform curve is determined on the waveform curve, and an abnormal area is determined in the electrical jump area based on the abnormal waveform curve; Utilizing the measuring device to continuously collect the electrical jump value of the abnormal area, and generating a current abnormal waveform curve based on the continuously collected electrical jump value of the abnormal area; When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold, a preset sleeve is sleeved on the electrical jump area to obtain a target rotor shaft diameter.

2. The method for optimizing the rotor shaft diameter according to claim 1, characterized in that: When it is detected that the waveform curve does not match the preset waveform curve, determining an abnormal waveform curve on the waveform curve, and determining an abnormal area in the electrical jump area based on the abnormal waveform curve, comprises: Determine a preset time interval, and calculate the difference between the corresponding electrical jump value on the waveform curve and the corresponding electrical jump value on the preset waveform curve at each preset time interval; When it is continuously detected that the difference is greater than a preset threshold, the abnormal waveform curve is determined on the waveform curve, and a region corresponding to the abnormal waveform curve is marked in the electrical jump region as the abnormal region.

3. The method for optimizing the rotor shaft diameter according to claim 1, characterized in that: The method further comprises: When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is less than the target threshold value, a grinding tool is used to grind the abnormal area to obtain an updated electric jump area, and the measuring device is used to continuously collect the electric jump value of the updated electric jump area. Based on the continuously collected electric jump value of the updated electric jump area, an updated waveform curve is generated in which the electric jump value of the updated electric jump area changes with a time period, until it is detected that the updated waveform curve matches the preset waveform curve, then grinding of the abnormal area is stopped to obtain the target rotor shaft diameter.

4. The method for optimizing the rotor shaft diameter according to claim 1, characterized in that: The method further comprises: When it is detected that the maximum difference between the current abnormal waveform curve and the target waveform curve is greater than the target threshold, grinding other areas using a grinding tool, the other areas being areas in the electrical jump area except the abnormal area; Utilizing the measuring device to continuously collect the electric jump value of the electric jump area, and obtaining a first waveform curve of the electric jump value changing with a time period; When it is detected that the first waveform curve matches the preset waveform curve, the electric jump area after grinding is determined to be the target electric jump area, and the target rotor shaft diameter is obtained based on the target electric jump area.

5. The method for optimizing the rotor shaft diameter according to claim 1, characterized in that: The method further comprises: sleeve-arranging the preset shaft sleeve before the electrical jump area; Obtaining a preset grinding thickness, using a grinding device to grind the initial electric jump area of ​​the rotor shaft diameter according to the preset grinding thickness, and using a rolling device to roll the ground initial electric jump area to obtain the electric jump area; The initial preset sleeve is obtained, and the initial preset sleeve is heated by the heating device to obtain the preset sleeve.

6. The method for optimizing the rotor shaft diameter according to claim 1, characterized in that: After the preset shaft sleeve is sleeved on the electrical jump area, the method further comprises: The outer circumference and end face of the preset sleeve are continuously polished by a polishing device, and the polished preset sleeve is continuously rolled by a rolling device until it is determined that the coaxiality between the axis of the preset sleeve and the axis of the rotor shaft diameter is within a preset coaxiality range.

7. A rotor shaft diameter optimization method using any one of claims 1 to 6, characterized in that: It includes a shaft body and a shaft sleeve; The shaft body includes an electrical jump area, and the shaft sleeve is sleeved on the electrical jump area.

8. The rotor shaft diameter according to claim 7, characterized in that: The material of the shaft body is the same as that of the shaft sleeve.

9. The rotor shaft diameter according to claim 7, characterized in that: The difference between the length of the sleeve body and the length of the electrical jump zone is greater than a preset difference, and the thickness of the sleeve body is within a preset thickness range.

10. A rotor, characterized in that: Comprising a rotor shaft diameter according to any one of claims 7-9.

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