Method for improving installation precision of motor

Abstract

The invention discloses a method for improving the installation precision of a motor. The method comprises the following steps: S1, providing a motor; s2, a mounting plate is fixedly mounted at the shaft output end of the shell, so that the outer side face of the mounting plate becomes a mounting face of the motor; s3, a dial indicator is fixedly installed on the output shaft of the rotor, and a measuring rod of the dial indicator abuts against and makes contact with the installation face to achieve jumping detection; s4, by starting the motor, enabling the dial indicator to rotate by taking the output shaft of the rotor as a central rotating shaft, and by adjusting the mounting height of the dial indicator on the output shaft of the rotor, enabling the dial indicator to measure any position of the mounting surface, and further realizing run-out detection to obtain initial value data of the mounting surface at any position; and S5, the mounting surface is manually scraped and adjusted through the scraper, so that final values measured by the dial indicator at any position of the mounting surface are equal, the axis direction of the rotor of the motor is perpendicular to the mounting surface of the motor, and the mounting precision of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor assembly, and particularly relates to a method for improving the installation accuracy of a motor. Background Art

[0002] The functions of a servo motor in a machine tool mainly include improving machining accuracy, working efficiency and safety, and ensuring the stable operation of the machine tool. The accuracy of the servo motor is affected by many factors. The two main aspects are the perpendicularity accuracy between the rotor and the mounting surface during the initial motor assembly and the concentricity of the entire rotor during the subsequent motor installation. Since the motor is a standard product and its accuracy meets the general market accuracy, it cannot be customized when higher requirements for the motor assembly accuracy are needed, or there is a problem of too high customization price. Summary of the Invention

[0003] The present invention aims to provide a method for improving the installation accuracy of a motor to solve the above-mentioned existing technical problems.

[0004] To achieve the above object, the technical solution of the present invention is: A method for improving the installation accuracy of a motor, including a motor and a mounting plate. The motor includes a housing, a stator and a rotor installed in the housing. One end of the housing is an output shaft end with a relief hole. The rotor has an output shaft, and one end of the output shaft passes through the relief hole to the outside of the housing; the method further includes the following steps:

[0005] S1. Provide a motor with general market accuracy;

[0006] S2. Fix the mounting plate on the output shaft end of the housing so that the outer side surface of the mounting plate becomes the mounting surface of the motor;

[0007] S3. Fix a height-adjustable dial indicator on the output shaft of the rotor, and the measuring rod of the dial indicator abuts against the mounting surface to achieve runout detection;

[0008] S4. By starting the motor, the output shaft of the rotor rotates, so that the dial indicator can rotate around the output shaft of the rotor as the center axis, and by adjusting the installation height of the dial indicator on the output shaft of the rotor, the rotation radius of the dial indicator can be adjusted, so that the dial indicator can measure any position of the mounting surface, and then runout detection is achieved to obtain the initial value data at any position of the mounting surface;

[0009] S5. According to the initial value data obtained by the dial indicator at any position of the mounting surface, manually scrape and adjust the mounting surface with a scraper so that the final values measured by the dial indicator at any position of the mounting surface are equal, and then the axis direction of the rotor of the motor is perpendicular to the mounting surface of the motor.

[0010] Preferably, the motor with market - general precision in step S1 refers to the motor whose initial value range measured by the dial indicator at any position on the mounting surface in step S4 is 0.01 - 0.02 mm.

[0011] Preferably, in step S5, after the mounting surface is scraped and adjusted manually with a scraper, the final value range measured by the dial indicator at any position on the mounting surface is 0 - 0.005 mm.

[0012] Preferably, in step S3, the measuring rod of the dial indicator is parallel to the output shaft.

[0013] Preferably, the motor is a servo motor.

[0014] Preferably, it further includes an adjusting bracket, and the dial indicator is fixedly installed on the output shaft of the rotor through the adjusting bracket with adjustable height.

[0015] The present invention has the following beneficial effects:

[0016] By fixedly installing the mounting plate at the output shaft end of the housing in the present invention, the outer side surface of the mounting plate becomes the mounting surface of the motor. The mounting surface is scraped and adjusted manually with a scraper, so that the final values measured by the dial indicator at any position on the mounting surface are equal. Furthermore, the axis direction of the rotor of the motor is perpendicular to the mounting surface of the motor, thereby improving the perpendicularity accuracy between the mounting surface of the motor and the rotor and the concentricity of the whole rotor, thus improving the mounting accuracy of the motor, ensuring the accuracy during the machining process of the machine tool, ensuring the stable performance of the machine tool, thereby improving the machining quality of parts, and the method is simple to operate and has low economic cost. Description of the Drawings

[0017] Figure 1 is a three - dimensional view of a motor with market - general precision in the prior art.

[0018] Figure 2 is a three - dimensional view of the assembled motor and mounting plate in the embodiment of the present invention.

[0019] Figure 3 is a side view of the assembled motor and mounting plate in the embodiment of the present invention.

[0020] Figure 4 is a disassembled schematic view of the motor and mounting plate in the embodiment of the present invention.

[0021] Figure 5 is a schematic view of the cooperation of the dial indicator, motor and mounting plate in the embodiment of the present invention.

[0022] Reference Signs in the Drawings: 1 motor, 11 housing, 12 output shaft, 2 mounting plate, 3 dial indicator, 4 adjusting bracket. Detailed Embodiments

[0023] To further illustrate the embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] Refer to Figure 2-5 As shown, as an embodiment of the present invention, a method for improving the installation accuracy of a motor 1 is provided, including the motor 1 and a mounting plate 3. The motor 1 includes a housing 11 and a stator and a rotor installed in the housing 11. One end of the housing 11 is an output shaft end with a relief hole, the rotor has an output shaft 12, and one end of the output shaft 12 passes through the relief hole to the outside of the housing 11; the following steps are further included:

[0027] S1. Provide a motor 1 with a general market accuracy;

[0028] S2. Fix the mounting plate 3 to the output shaft end of the housing 11 so that the outer side surface of the mounting plate 3 becomes the mounting surface of the motor 1;

[0029] S3. Fix a height-adjustable dial indicator 4 on the output shaft 12 of the rotor, and the measuring rod of the dial indicator 4 abuts against the mounting surface to achieve runout detection;

[0030] S4. By starting the motor 1, the output shaft 12 of the rotor is rotated, so that the dial indicator 4 can rotate around the output shaft 12 of the rotor as the central rotating shaft. By adjusting the installation height of the dial indicator 4 on the output shaft 12 of the rotor, the rotation radius of the dial indicator 4 can be adjusted, so that the dial indicator 4 can measure any position of the installation surface, and then the runout detection is realized to obtain the initial value data at any position of the installation surface;

[0031] S5. According to the initial value data obtained by the dial indicator 4 at any position of the installation surface, manually scrape and adjust the installation surface with a scraper, so that the final values measured by the dial indicator 4 at any position of the installation surface are equal. Thus, the axis direction of the rotor of the motor 1 is perpendicular to the installation surface of the motor 1, thereby improving the perpendicularity accuracy between the installation surface of the motor 1 and the rotor and the concentricity of the whole rotor, improving the installation accuracy of the motor 1, ensuring the accuracy of the machine tool during the machining process, ensuring the stable performance of the machine tool, improving the machining quality of the parts. And this method is simple to operate and has low economic cost.

[0032] In this embodiment, the motor 1 with the market - common accuracy in step S1 refers to the motor 1 in which the initial value range measured by the dial indicator 4 at any position of the installation surface in step S4 is 0.01 - 0.02 mm, thereby reducing the workload of manually scraping and adjusting the installation surface with a scraper and saving labor costs.

[0033] In this embodiment, in step S5, after manually scraping and adjusting the installation surface with a scraper, the final value measured by the dial indicator 4 at any position of the installation surface is 0 mm, which is convenient for observation and reading and avoids errors. Of course, the above - mentioned final value range between 0 and 0.005 mm is also acceptable, with a small error and meeting the high - precision production requirements.

[0034] In this embodiment, in step S3, the measuring rod of the dial indicator 4 is parallel to the output shaft 12, thereby ensuring the accuracy and stability of the measurement of the dial indicator 4.

[0035] In this embodiment, the motor 1 is a servo motor, which has the advantages of high - precision control, fast response speed, and good low - speed stability.

[0036] In this embodiment, it further includes an adjusting bracket 5. The dial indicator 4 is fixedly installed on the output shaft 12 of the rotor through the adjusting bracket 5 with adjustable height, and then the adjustment of the rotation radius of the dial indicator 4 is realized.

[0037] Although the present invention is specifically shown and introduced in combination with the preferred implementation embodiments, those skilled in the art should understand that without departing from the spirit and scope of the present invention defined by the appended claims, various changes made to the present invention in form and details all fall within the protection scope of the present invention.

Claims

1. A method for improving motor installation accuracy, characterized in that: The invention comprises a motor and a mounting plate, wherein the motor comprises a housing, a stator and a rotor installed in the housing, one end of the housing is a shaft end with a clearance hole, the rotor has an output shaft, and one end of the output shaft is passed through the clearance hole to the outside of the housing; and further comprises the following steps: S1. Provide a motor with universal market precision; S2. Fix the mounting plate on the shaft end of the housing so that the outer side of the mounting plate becomes the mounting surface of the motor; S3. A height-adjustable micrometer is fixedly mounted on the output shaft of the rotor, and the measuring rod of the micrometer is in contact with the mounting surface to achieve runout detection; S4, by starting the motor, the output shaft of the rotor rotates, so that the dial gauge can rotate with the output shaft of the rotor as the central axis, and by adjusting the installation height of the dial gauge on the output shaft of the rotor, the rotation radius of the dial gauge can be adjusted, so that the dial gauge can measure any position of the installation surface, and then realize the runout detection to obtain the initial value data of the installation surface at any position; S5. According to the initial value data obtained by the micrometer at any position of the mounting surface, the mounting surface is manually scraped and adjusted by a scraper so that the final value measured by the micrometer at any position of the mounting surface is equal, thereby making the axial direction of the motor's rotor perpendicular to the motor's mounting surface.

2. The method for improving motor installation accuracy according to claim 1, characterized in that: The motor with general market accuracy in step S1 refers to a motor whose initial value range is 0.01 to 0.02 mm as measured by the micrometer at any position of the mounting surface in step S4.

3. The method for improving motor installation accuracy according to claim 1, characterized in that: In step S5, after the installation surface is manually scraped and adjusted by a scraper, the final value range of the micrometer measured at any position of the installation surface is 0 to 0.005 mm.

4. The method for improving motor installation accuracy according to claim 1, characterized in that: In step S3, the measuring rod of the micrometer and the output shaft are parallel to each other.

5. The method for improving motor installation accuracy according to claim 1, characterized in that: The motor is a servo motor.

6. The method for improving motor installation accuracy according to claim 1, characterized in that: It also includes an adjustment bracket, and the micrometer is fixedly installed on the output shaft of the rotor in an adjustable manner through the adjustment bracket.

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