A tooling for assembling the stator and rotor of a longitudinal arm motor

Abstract

This invention proposes a fixture for assembling the stator and rotor of a longitudinal arm motor, mainly comprising a lower plate, an upper plate, a lifting plate, a guide shaft, a rotor positioning bracket, a lead screw and copper nut, a lead screw jack, a drive motor, and a drive motor controller. The drive motor controls the raising, lowering, and stopping of the lifting plate. Under the condition that the stop on the lifting plate and the stop on the rotor positioning bracket meet the coaxiality requirements, the assembly of the motor stator and rotor assembly is achieved through the up-and-down movement of the lifting plate. This device has a simple structure, reliable function, and is easy to use. It can ensure the coaxiality of the stator and rotor during motor assembly, achieving precise assembly of the stator and rotor of the longitudinal arm motor. It can specifically solve the magnetic circuit imbalance caused by uneven air gap due to stator and rotor coaxiality deviation, effectively reducing motor temperature rise and noise, improving assembly efficiency, and extending motor service life.

Description

Technical Field

[0001] This invention belongs to the field of motor assembly technology, specifically relating to a tooling for assembling the stator and rotor of a longitudinal arm motor. Background Technology

[0002] In the assembly and manufacturing process of electric motors, the stator-rotor assembly is a critical process that determines the core performance of the product. Its assembly quality directly affects the motor's energy conversion efficiency, operational stability, and service life. Coaxiality deviation between the stator and rotor leads to distortion of the air gap magnetic field distribution. When the error is too high, the motor will generate periodic unilateral magnetic pull, causing additional iron and copper losses. Such assembly defects can reduce motor efficiency by approximately 3%-8%, increase temperature rise by more than 15K, and also cause vibration and noise, and in severe cases, even lead to mechanical failures such as rotor rubbing. Traditional assembly processes rely on manual measurement and tapping correction, which are time-consuming and significantly influenced by the operator's experience, becoming a bottleneck restricting the mass production of electric motors. To address these pain points, the development of stator-rotor assembly tooling is essential. Summary of the Invention

[0003] (a) Technical problems to be solved This invention proposes a tooling for assembling the stator and rotor of a longitudinal arm motor to solve the technical problem of how to achieve precise assembly of the stator and rotor of a longitudinal arm motor.

[0004] (II) Technical Solution To address the aforementioned technical problems, this invention proposes a fixture for assembling the stator and rotor of a longitudinal arm motor. This fixture includes a lower plate, an upper plate, a lifting plate, a guide shaft, a rotor positioning bracket, a lead screw nut, a lead screw jack, a drive motor, and a drive motor controller. The four corners of the lower plate are connected to the bottom of the four optical axes, and the four corners of the upper plate are connected to the top of the four optical axes; the lifting plate is set between the lower plate and the upper plate, and the four corners of the lifting plate are installed on the four optical axes. The rotor positioning bracket is installed on the lower plate and has a stop for positioning the motor rotor assembly. The lifting plate has a stop that matches the stop of the rotor positioning bracket and the stop on the lifting plate is coaxial with the stop of the rotor positioning bracket. The motor stator assembly is positioned by the stop on the lifting plate and is connected to the lifting plate by threads. The lead screw nut is installed in the mounting hole of the upper plate. The bottom of the lead screw jack is fixedly connected to the lifting plate. The top of the lead screw of the lead screw jack is connected to the upper plate through the lead screw nut. The drive motor and reducer are connected to the input shaft of the lead screw jack through a coupling. They are used to drive the input shaft of the lead screw jack to rotate, so that the lead screw of the lead screw jack rotates, thereby driving the lifting plate to move along the optical axis. The drive motor controller is installed on the lower plate to control the drive motor and control the lifting plate's rising, falling, and stopping actions. Under the condition that the stop on the lifting plate and the stop on the rotor positioning bracket meet the coaxiality requirements, the motor stator and rotor assembly is assembled through the up and down movement of the lifting plate.

[0005] Furthermore, the four corners of the lower plate are connected to the bottom ends of the four optical axes via optical axis supports.

[0006] Furthermore, the four corners of the upper plate are connected to the tops of the four optical axes via optical axis supports.

[0007] Furthermore, the four corners of the lifting plate are respectively mounted on four optical shafts via linear bearings.

[0008] Furthermore, the rotor positioning bracket is equipped with a pressure plate for fixing the motor rotor assembly.

[0009] Furthermore, the bottom of the screw jack is connected to the lifting plate via threads.

[0010] (III) Beneficial Effects This invention proposes a fixture for assembling the stator and rotor of a longitudinal arm motor, mainly comprising a lower plate, an upper plate, a lifting plate, a guide shaft, a rotor positioning bracket, a lead screw and copper nut, a lead screw jack, a drive motor, and a drive motor controller. The drive motor controls the raising, lowering, and stopping of the lifting plate. Under the condition that the stop on the lifting plate and the stop on the rotor positioning bracket meet the coaxiality requirements, the assembly of the motor stator and rotor assembly is achieved through the up-and-down movement of the lifting plate. This device has a simple structure, reliable function, and is easy to use. It can ensure the coaxiality of the stator and rotor during motor assembly, achieving precise assembly of the stator and rotor of the longitudinal arm motor. It can specifically solve the magnetic circuit imbalance caused by uneven air gap due to stator and rotor coaxiality deviation, effectively reducing motor temperature rise and noise, improving assembly efficiency, and extending motor service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the longitudinal arm motor stator and rotor assembly tooling of the present invention. Detailed Implementation

[0012] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0013] This embodiment proposes a tooling for assembling the stator and rotor of a longitudinal arm motor, the overall structure of which is as follows: Figure 1 As shown, it mainly includes a lower plate 1, an upper plate 2, a lifting plate 3, an optical shaft 4, a rotor positioning bracket 5, a lead screw copper nut 6, a lead screw jack 7, a drive motor 8, and a drive motor controller 9.

[0014] The four corners of the lower plate 1 are connected to the bottom ends of the four optical axes 4 via optical axis supports 10, and the four corners of the upper plate 2 are connected to the top ends of the four optical axes 4 via optical axis supports 10. The lifting plate 3 is located between the lower plate 1 and the upper plate 2. Linear bearings 11 are installed at the four corners of the lifting plate 3, and the lifting plate 3 is mounted on the four optical axes 4 via the four linear bearings 11.

[0015] The rotor positioning bracket 5 is mounted on the lower plate 1. The rotor positioning bracket 5 is equipped with a stop for positioning the motor rotor assembly and a pressure plate for fixing the motor rotor assembly. The lifting plate 3 is equipped with a stop that matches the stop of the rotor positioning bracket 5, and the stop on the lifting plate 3 and the stop of the rotor positioning bracket 5 are coaxially arranged. The motor stator assembly is positioned by the stop on the lifting plate 3 and is connected to the lifting plate 3 by threads.

[0016] The lead screw nut 6 is installed in the mounting hole of the upper plate 2. The bottom of the lead screw jack 7 is connected to the lifting plate 3 by threads, and the top of the lead screw of the lead screw jack 7 is connected to the upper plate 2 by the lead screw nut 6. The drive motor 8 and the reducer are connected to the input shaft of the lead screw jack 7 through a coupling, which drives the input shaft of the lead screw jack 7 to rotate, causing the lead screw of the lead screw jack 7 to rotate, thereby driving the lifting plate 3 to move along the optical axis 4.

[0017] The drive motor controller 9 is installed on the lower plate 1 and is used to control the drive motor 8. It has three positions: up, down and stop. It can control the up, down and stop actions of the lifting plate 3. Under the condition that the stop on the lifting plate 3 and the stop on the rotor positioning bracket 5 meet the coaxiality requirements, the motor stator and rotor assembly is assembled by the up and down movement of the lifting plate 3.

[0018] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tooling for assembling the stator and rotor of a longitudinal arm motor, characterized in that, The longitudinal arm motor stator-rotor assembly tooling comprises a lower plate, an upper plate, a lifting plate, four light shafts, a rotor positioning support, a lead screw nut, a lead screw lifting machine, a driving motor and a driving motor controller. The four corners of the lower plate are connected with the bottom ends of the four light shafts respectively, the four corners of the upper plate are connected with the top ends of the four light shafts respectively, and the lifting plate is arranged between the lower plate and the upper plate. The rotor positioning support is arranged on the lower plate, and a stopper for positioning the motor rotor assembly is arranged on the rotor positioning support. The lead screw nut is arranged in the mounting hole of the upper plate, the bottom of the lead screw lifting machine is fixedly connected with the lifting plate, the top end of the lead screw of the lead screw lifting machine is connected with the upper plate through the lead screw nut, the driving motor and the speed reducer are connected with the input shaft of the lead screw lifting machine through a shaft coupling, and the input shaft of the lead screw lifting machine is driven to rotate, so that the lead screw of the lead screw lifting machine rotates, thereby driving the lifting plate to move along the light shaft. The driving motor controller is arranged on the lower plate and is used for controlling the driving motor to control the lifting plate to ascend, descend and stop.

2. The motor stator-rotor assembly tooling fixture of claim 1, wherein: The four corners of the lower plate are connected with the bottom ends of the four light shafts through the light shaft supports respectively.

3. The motor stator-rotor assembly fixture for a trailing arm as set forth in claim 1, wherein, The four corners of the upper plate are connected with the top ends of the four light shafts through the light shaft supports respectively.

4. The motor stator-rotor assembly fixture for a trailing arm as set forth in claim 1, wherein, The four corners of the lifting plate are arranged on the four light shafts through the linear bearings respectively.

5. The motor stator-rotor assembly fixture for a trailing arm as set forth in claim 1, wherein, The rotor positioning support is arranged on the lower plate, and a stopper for positioning the motor rotor assembly is arranged on the rotor positioning support.

6. The motor stator-rotor assembly fixture for a trailing arm as set forth in claim 1, wherein, The bottom of the lead screw lifting machine is connected with the lifting plate through threads. The bottom of the lead screw lifting machine is connected with the lifting plate through threads.

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