A rotor laser welding tool

Abstract

The utility model discloses a rotor laser welding frock belongs to motor manufacturing technical field, including first workstation, bottom chuck chuck, top pressure head and drive the compression drive component of top pressure head up and down movement, drive motor and the rotating platform driven by drive motor, and bottom chuck chuck is located above rotating platform and clamps the rotor center axle, and top pressure head is located the top of bottom chuck chuck, under the action of compression drive component, up and down movement along the vertical direction, and rotating platform is located on first workstation and is transmission connection with drive motor, and under the control of drive motor, drives the rotor rotation, realizes the end cover circumference continuous welding. The application realizes the up and down clamping centering of the rotor through the cooperation of top pressure head and bottom chuck chuck, ensures that the rotor does not displace in the welding process.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a rotor laser welding fixture. Background Technology

[0002] In the laser welding process of motor rotors, stable clamping and positioning of the rotor are required to ensure welding quality. In existing welding devices, the lower support is connected to the drive motor, which drives the rotor to rotate, while the upper pressure head presses against the upper end of the rotor. However, this type of device has certain shortcomings in the rotor clamping and centering structure. The clamping and positioning accuracy and stability of the bottom support on the rotor's central shaft need to be improved, making it difficult to meet the requirements of high-precision welding.

[0003] Therefore, there is an urgent need for an improved welding device to solve the problems existing in the prior art. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to set a bottom chuck chuck to realize the precise clamping and positioning of the rotor center shaft in a rotor laser welding fixture.

[0005] The objective of this utility model is achieved through the following technical solution: A rotor laser welding fixture includes a first worktable, a bottom chuck, a top pressure head, a clamping drive assembly for driving the top pressure head up and down, a drive motor, and a rotary table driven by the drive motor. The bottom chuck is located above the rotary table and clamps the rotor's central shaft. The top pressure head is located directly above the bottom chuck and moves up and down vertically under the action of the clamping drive assembly. The rotary table is located on the first worktable and is connected to the drive motor for transmission. Under the control of the drive motor, it drives the rotor to rotate, achieving continuous circumferential welding of the end cap.

[0006] Preferably, the drive motor is a servo motor.

[0007] Preferably, the lower end of the rotary table is connected to the output shaft of the drive motor via a transmission shaft, and the transmission shaft is provided with a bearing seat for support. The bearing seat is fixed on the first worktable, and the rotary table is fixed on the bearing seat.

[0008] Preferably, the bottom chuck chuck includes a chuck body and a plurality of jaws disposed within the chuck body. The chuck body is fixedly connected to the upper end face of the rotary table, and the plurality of jaws are evenly distributed circumferentially inside the chuck body.

[0009] Preferably, the longitudinal portion of the gripper has a slit to clamp or release the rotor central shaft.

[0010] Preferably, the gripper has three slots.

[0011] Preferably, the pressing drive assembly includes a sliding column, a guide column, and a support base fixedly connected to the guide column. The sliding column is located between the guide columns and slidably connected to the support base. The pressing drive assembly also includes a drive motor and a connecting seat for driving the sliding column to move up and down. The connecting seat is fixedly connected to the lower part of the sliding column, and the top pressure head is fixed to the lower end of the connecting seat.

[0012] Preferably, the rotor laser welding fixture further includes a transverse fixing plate and a column support. The column support is located on one side of the first worktable and is fixedly connected to the first worktable. The transverse fixing plate is fixedly connected to the first worktable through the column support, and the guide column is fixed to the transverse fixing plate.

[0013] Preferably, the lower end face of the top pressure head is provided with an elastic buffer layer.

[0014] Preferably, the rotor laser welding fixture further includes a second worktable, which is arranged parallel to and spaced apart from the first worktable, and the drive motor is located between the first worktable and the second worktable.

[0015] Compared with existing technologies, the rotor laser welding fixture of this invention has the following advantages: This application presents a rotor laser welding fixture. By incorporating a bottom chuck on the worktable, it precisely clamps the rotor's central shaft, offering higher clamping accuracy and better stability compared to existing lower support structures. The top pressure head, in conjunction with the bottom chuck, achieves vertical clamping and centering of the rotor, ensuring no displacement during welding. A servo motor controls the rotary table's rotation, precisely controlling the rotor's rotation angle and speed to meet the high-precision requirements of continuous circumferential welding of the end caps. The overall structure is rationally designed and easy to operate, effectively improving the welding quality and production efficiency of the motor rotor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the rotor laser welding fixture of this application; Figure 2 This is a schematic diagram of the rotor laser welding fixture of this application after removing the top pressure head and the clamping drive assembly; Figure 3 for Figure 2 Exploded view of the structure; Figure 4 for Figure 1 A schematic diagram of the structure of the top pressure head and the clamping drive assembly; Figure 5 for Figure 4A schematic diagram of the top pressure head.

[0017] In the diagram: 100, First worktable; 200, Second worktable; 300, Bottom chuck chuck; 301, Chuck body; 302, Gripper; 400, Rotary table; 401, Drive shaft; 402, Bearing housing; 500, Drive motor; 600, Top pressure head; 601, Hole; 700, Clamping drive assembly; 701, Guide column; 702, Support base; 703, Sliding column; 704, Connecting base; 800, Horizontal fixing plate; 900, Column support; 1000, Rotor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Figures 1-5 This utility model provides a rotor laser welding fixture, such as... Figures 1-3As shown, the laser welding fixture for the rotor 1000 includes a first worktable 100 and a bottom chuck 300, a top pressure head 600, a clamping drive assembly 700 that drives the top pressure head 600 to move up and down, a drive motor 500, and a rotary table 400 driven by the drive motor 500. The bottom chuck 300 is located above the rotary table 400 and clamps the central shaft of the rotor 1000. The top pressure head 600 is located directly above the bottom chuck 300 and moves up and down vertically under the action of the clamping drive assembly 700. The rotary table 400 is located on the first worktable 100 and is connected to the drive motor 500 for transmission. Under the control of the drive motor 500, it drives the rotor 1000 to rotate, realizing continuous circumferential welding of the end cap.

[0022] Specifically, the chuck body 301 is fixedly connected to the upper end face of the rotary table 400 by bolts.

[0023] The rotor 1000 laser welding fixture also includes a second worktable 200, which is arranged parallel to and spaced apart from the first worktable 100, and the drive motor 500 is located between the first worktable 100 and the second worktable 200.

[0024] The bottom chuck 300 includes a chuck body 301 and a plurality of jaws 302 disposed within the chuck body 301. The chuck body 301 is fixedly connected to the upper end face of the rotary table 400, and the plurality of jaws 302 are evenly distributed circumferentially inside the chuck body 301.

[0025] Specifically, the external pipe connector of the bottom chuck 300 connects an external power source (hydraulic pump, air compressor, etc.) to the drive mechanism of the bottom chuck 300, allowing the pressure medium to flow into the bottom chuck 300 through the pipe connector, pushing the jaws 302 to perform the action of clamping or releasing the central shaft of the rotor 1000, ensuring the stable positioning of the rotor 1000 during processing or assembly, and meeting the needs of precise control in automated production.

[0026] The longitudinal portion of the gripper 302 has a gap, which gives the gripper 302 the ability to deform to clamp or release the central shaft of the rotor 1000.

[0027] Specifically, the gripper 302 has three slots. In this embodiment, the gripper 302 adopts a three-jaw chuck structure, which can evenly clamp the central shaft of the rotor 1000, ensuring the stability and symmetry of the clamping.

[0028] The lower end of the rotary table 400 is connected to the output shaft of the drive motor 500 via a transmission shaft 401. The transmission shaft 401 is provided with a bearing seat 402 for support. The bearing seat 402 is fixed on the first worktable 100, and the rotary table 400 is fixed on the bearing seat 402.

[0029] Specifically, the drive motor 500 is a servo motor, which can precisely control the vertical movement distance and pressure of the connecting seat 704, thereby achieving precise control of the clamping force of the top pressure head 600.

[0030] like Figure 4 , Figure 5 As shown, the clamping drive assembly 700 includes a sliding column 703, a guide column 701, and a support base 702 fixedly connected to the guide column 701. The sliding column 703 is located between the guide columns 701 and is slidably connected to the support base 702. The clamping drive assembly 700 also includes a drive motor 500 for driving the sliding column 703 to move up and down and a connecting seat 704. The connecting seat 704 is fixedly connected to the lower part of the sliding column 703. The guide column 701 is vertically arranged, and the top pressure head 600 is fixed to the lower end of the connecting seat 704.

[0031] Specifically, the top pressure head 600 is fixed to the lower end of the connecting seat 704 by bolts.

[0032] The rotor 1000 laser welding fixture also includes a transverse fixing plate 800 and a column support 900. The column support 900 is located on one side of the first worktable 100 and is fixedly connected to the first worktable 100. The transverse fixing plate 800 is fixedly connected to the first worktable 100 through the column support 900. The guide column 701 is fixed on the transverse fixing plate 800.

[0033] An elastic buffer layer is provided in the hole 601 at the lower end of the top pressure head 600 to prevent damage to the surface of the central shaft of the rotor 1000 during the pressing process. The elastic buffer layer is made of elastic materials such as rubber.

[0034] When using the rotor laser welding fixture of this application, after the rotor 1000 sleeve end cover assembly is rotated, the rotor 1000 is manually placed on the bottom chuck 300, so that the central axis of the rotor 1000 is aligned with the center of the chuck body 301; then the drive mechanism of the bottom chuck 300 is started, so that the jaws 302 clamp the central axis of the rotor 1000; next, the drive motor 500 of the clamping drive assembly 700 works, driving the connecting seat 704 to move downward along the sliding column 703, so that the hole 601 in the top pressure head 600 is aligned with the top of the clamping rotor 1000, completing the clamping and centering; then, the drive motor 500 controls the rotary table 400 to rotate, driving the rotor 1000 to rotate, and cooperates with the laser welding machine to perform continuous circumferential welding of the end cover; after the welding is completed, the top pressure head 600 is released first, then the bottom chuck 300 is released, and the rotor 1000 is manually removed, completing the entire welding process. This application presents a rotor laser welding fixture. By installing a bottom chuck 300 on the first worktable 100, it can precisely clamp the central axis of the rotor 1000. Compared to the existing lower support structure, this provides higher clamping and positioning accuracy and better stability. The top pressure head 600 cooperates with the bottom chuck 300 to achieve vertical clamping and centering of the rotor 1000, ensuring that the rotor 1000 will not shift during welding. A servo motor controls the rotation of the rotary table 400, precisely controlling the rotation angle and speed of the rotor 1000 to meet the high-precision requirements of continuous circumferential welding of the end caps. The overall structure is rationally designed and easy to operate, effectively improving the welding quality and production efficiency of the motor rotor 1000.

[0035] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A rotor laser welding fixture, comprising a first worktable, characterized in that: The rotor laser welding fixture also includes a bottom chuck, a top pressure head, a clamping drive assembly for driving the top pressure head up and down, a drive motor, and a rotary table driven by the drive motor. The bottom chuck is located above the rotary table and clamps the rotor's central shaft. The top pressure head is located directly above the bottom chuck and moves up and down vertically under the action of the clamping drive assembly. The rotary table is located on the first worktable and is connected to the drive motor for transmission. Under the control of the drive motor, it drives the rotor to rotate, thereby achieving continuous circumferential welding of the end cap.

2. The rotor laser welding fixture according to claim 1, characterized in that: The drive motor is a servo motor.

3. The rotor laser welding fixture according to claim 2, characterized in that: The lower end of the rotary table is connected to the output shaft of the drive motor via a transmission shaft. The transmission shaft is provided with a bearing seat for support. The bearing seat is fixed on the first worktable, and the rotary table is fixed on the bearing seat.

4. The rotor laser welding fixture according to claim 1, characterized in that: The bottom chuck chuck includes a chuck body and multiple jaws disposed within the chuck body. The chuck body is fixedly connected to the upper end face of the rotary table, and the multiple jaws are evenly distributed circumferentially inside the chuck body.

5. The rotor laser welding fixture according to claim 4, characterized in that: The longitudinal portion of the gripper has a slit to clamp or release the rotor central shaft.

6. The rotor laser welding fixture according to claim 5, characterized in that: The gripper has three slots.

7. The rotor laser welding fixture according to claim 1, characterized in that: The pressing drive assembly includes a sliding column, a guide column, and a support base fixedly connected to the guide column. The sliding column is located between the guide columns and slidably connected to the support base. The pressing drive assembly also includes a drive motor and a connecting seat for driving the sliding column to move up and down. The connecting seat is fixedly connected to the lower part of the sliding column, and the top pressure head is fixed to the lower end of the connecting seat.

8. The rotor laser welding fixture according to claim 7, characterized in that: The rotor laser welding fixture also includes a horizontal fixing plate and a column support. The column support is located on one side of the first worktable and is fixedly connected to the first worktable. The horizontal fixing plate is fixedly connected to the first worktable through the column support. The guide column is fixed on the horizontal fixing plate.

9. The rotor laser welding fixture according to claim 1, characterized in that: The lower end face of the top pressure head is provided with an elastic buffer layer.

10. The rotor laser welding fixture according to claim 1, characterized in that: The rotor laser welding fixture also includes a second worktable, which is arranged parallel to and spaced apart from the first worktable, and the drive motor is located between the first worktable and the second worktable.

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