Automatic rotor laser welding spot milling device

Abstract

The utility model discloses an automatic rotor laser welding spot milling device, which comprises a milling component, a laser welding spot detection component, a laser welding spot detection component and a laser welding spot detection component, a plurality of laser welding spots are distributed on the upper end face and the lower end face of the rotor in an annular array; the workbench is used for adjusting the relative position of the laser welding spot and the milling assembly, so that the laser welding spot can be milled by the milling assembly; and the measuring assembly is used for measuring the thickness of the rotor and generating a control signal through the thickness to control the movement distance of the milling assembly relative to the rotor, and is suitable for cutting laser welding spots on rotors with different thicknesses.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing and manufacturing, in particular to an automatic rotor milling laser welding point device. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. The structure of a motor consists of a stator, a rotor, and other accessories. The rotor consists of a rotor shaft, an iron core, and a rotor winding. The machining of the rotor requires machine tools and fixtures.

[0003] The existing Chinese utility model patent "A parallel double-sided milling device with micro-feed" with application number 201620233747.6 discloses, "Use the fixture seat 7 to clamp the workpiece to be processed, turn on the CNC system to control the servo motor 8 to put the fixture seat 7 in the working position, start the first motor 2 and the second motor 11 to rotate the tool, and use handwheel 1 and handwheel 2 12 to achieve milling of two planes of the workpiece with different machining allowances." The handwheel feed device that manually adjusts the feed amount requires skilled workers to achieve more precise control. When operated by inexperienced workers, it is easy to cause the processing parts that need to be processed to not be cut in place, and the parts that do not need to be processed to be cut too much, affecting the processing accuracy of the workpiece. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic rotor laser welding device in order to solve the technical problems mentioned in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Automatic rotor milling laser welding device, including:

[0007] Milling assembly, used for milling the raised laser welding spots on the upper and lower end surfaces of the rotor;

[0008] The rotor has a number of laser welding points distributed in a circular array on the upper and lower end surfaces;

[0009] A workbench, adjusting the relative position of the laser welding point and the milling assembly, so that the milling assembly can perform a milling operation on the laser welding point;

[0010] The measuring component measures the thickness of the rotor and generates a control signal according to the thickness to control the movement distance of the milling component relative to the rotor.

[0011] As a further description of the above technical solution:

[0012] The workbench includes a stepper motor, a support plate, a base, a positioning column and a pressure plate. The stepper motor is fixed on the base, the support plate is fixedly connected to the output shaft of the stepper motor, the positioning column is fixed on the support plate, the rotor is sleeved on the positioning column, and the pressure plate is fixedly connected to the positioning column after being pressed on the rotor.

[0013] As a further description of the above technical solution:

[0014] The milling assembly comprises a frame and a milling cutter assembly. The frame is vertically fixed with two sets of milling cutter assemblies arranged on both sides of the rotor, and the milling cutter assemblies are used to perform milling operations on the laser welding points on the rotor.

[0015] As a further description of the above technical solution:

[0016] The milling cutter assembly comprises a servo electric cylinder, a high-speed motor and a milling cutter. The servo electric cylinder is fixedly mounted on a frame, an output shaft of the servo electric cylinder is fixedly connected to the high-speed motor, and the milling cutter is fixedly sleeved on the output shaft of the high-speed motor.

[0017] As a further description of the above technical solution:

[0018] The measuring component comprises a bracket and a distance measuring sensor. The bracket is arranged on one side of the milling component and the workbench, and two groups of distance measuring sensors arranged on both sides of the rotor are fixedly mounted on the bracket.

[0019] As a further description of the above technical solution:

[0020] It also includes a processor and a controller. Two distance measuring sensors illuminate one side of the rotor and feed back measurement data to the processor. The processor calculates the thickness of the rotor based on the measurement data and feeds back the thickness data to the controller. The controller generates a control signal based on the thickness data and controls the movement distance of the output shaft of the servo electric cylinder through the control signal.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] 1. In the utility model, two sets of distance measuring sensors are used to irradiate one side of the rotor, and the measurement data is fed back to the processor. The processor calculates the thickness of the rotor according to the measurement data, and feeds back the thickness data to the controller. The controller generates a control signal according to the thickness data, and controls the servo electric cylinder through the control signal to drive the upper and lower servo electric cylinders to drive the high-speed motor and the milling cutter to move close to the rotor until the milling cutter moves to the corresponding side welding point. The high-speed motor drives the milling cutter to rotate at a high speed to cut the raised laser welding point. After the cutting is completed, the servo electric cylinder drives the high-speed motor and the milling cutter to reset, and the stepper motor stops after rotating a step distance, and continues to cut the next laser welding point until all the welding points are cut and then shut down. It is not restricted by the workers' operating proficiency and ensures the machining accuracy of the rotor.

[0023] 2. In the utility model, two distance measuring sensors illuminate one side of the rotor and feed back the measurement data to the processor. The processor calculates the thickness of the rotor based on the measurement data and feeds back the thickness data to the controller. The controller generates a control signal based on the thickness data, and controls the movement distance of the servo electric cylinder output shaft through the control signal, thereby adjusting the movement distance of the high-speed motor output shaft end mill relative to the rotor, which is suitable for cutting laser welds on rotors of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic top view of an automatic rotor laser welding point milling device provided according to an embodiment of the utility model is shown;

[0025] Figure 2 A schematic structural diagram of a milling assembly provided according to an embodiment of the utility model is shown;

[0026] Figure 3 A schematic diagram of the structure of a workbench provided according to an embodiment of the utility model is shown;

[0027] Figure 4 A schematic diagram of the structure of a measuring assembly provided according to an embodiment of the utility model is shown;

[0028] Figure 5 A control block diagram of a servo electric cylinder provided according to an embodiment of the utility model is shown.

[0029] Legend:

[0030] 1. Milling assembly; 11. Frame; 12. Servo electric cylinder; 13. High-speed motor; 14. Milling cutter; 2. Rotor; 3. Workbench; 31. Stepper motor; 32. Support plate; 33. Base; 34. Positioning column; 35. Press plate; 4. Measuring assembly; 41. Bracket; 42. Distance sensor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-5 The utility model provides a technical solution: an automatic rotor laser welding device, comprising:

[0033] like Figure 1 and Figure 2The milling assembly 1 shown is used for milling the raised laser welding spots on the upper and lower end surfaces of the rotor 2. Specifically, the milling assembly 1 includes a frame 11 and a milling cutter assembly. The frame 11 is vertically fixed with two sets of milling cutter assemblies arranged on both sides of the rotor 2, and the laser welding spots on the rotor 2 are milled by the milling cutter assembly. Further, the milling cutter assembly includes a servo electric cylinder 12, a high-speed motor 13 and a milling cutter 14. The servo electric cylinder 12 is fixedly installed on the frame 11, and the output shaft of the servo electric cylinder 12 is fixedly connected to the high-speed motor 13, and the milling cutter 14 is fixedly sleeved on the output shaft of the high-speed motor 13. The servo electric cylinder 12 drives the high-speed motor 13 and the milling cutter 14 to move vertically close to or away from the rotor 2, so that the high-speed motor 13 drives the milling cutter 14 to rotate at a high speed to cut the raised laser welding spots on the rotor 2. The vertical distance of the output shaft of the servo electric cylinder 12 is automatically controlled by the thickness of the rotor 2.

[0034] like Figure 1 and Figure 3 The rotor 2 shown has 16 groups of laser welding points distributed in a circular array on the upper and lower end surfaces.

[0035] like Figure 1 and Figure 3 The workbench 3 shown adjusts the relative position of the laser welding point and the milling assembly 1 so that the milling assembly 1 can perform milling operation on the laser welding point. Specifically, the workbench 3 includes a stepper motor 31, a support plate 32, a base 33, a positioning column 34 and a pressing plate 35. The stepper motor 31 is fixed on the base 33, the support plate 32 is fixedly connected to the output shaft of the stepper motor 31, the positioning column 34 is fixed on the support plate 32, the rotor 2 is sleeved on the positioning column 34, and the pressing plate 35 is fixedly connected to the positioning column 34 after being pressed on the rotor 2. The stepping distance of the stepper motor 31 is: 360° / the number of laser welding points on one side of the rotor 2. If there are 16 groups of laser welding points in this embodiment, the stepping distance of the stepper motor 31 is 22.5°. The stepper motor 31 drives the rotor 2 on the support plate 32 to rotate 22.5°, and the laser welding points at each position are cut one by one.

[0036] like Figure 1 , Figure 4 and Figure 5The measuring component 4 shown measures the thickness of the rotor 2, and controls the movement distance of the milling component 1 relative to the rotor 2 by generating a control signal based on the thickness. Specifically, the measuring component 4 includes a bracket 41, a distance sensor 42, a processor and a controller. The bracket 41 is arranged on one side of the milling component 1 and the workbench 3. Two groups of distance sensors 42 arranged on both sides of the rotor 2 are fixedly mounted on the bracket 41. The two distance sensors 42 irradiate on one side of the rotor 2 and feed back the measurement data to the processor. The processor calculates the thickness of the rotor 2 based on the measurement data and feeds back the thickness data to the controller. The controller generates a control signal based on the thickness data, controls the movement distance of the output shaft of the servo electric cylinder 12 through the control signal, and then adjusts the movement distance of the milling cutter 14 at the output shaft end of the high-speed motor 13 relative to the rotor 2, which is suitable for cutting laser welds on rotors 2 of different thicknesses. Among them, the measurement operation of the thickness measurement in this embodiment is relatively simple, and the rotor 2 only needs to be located between the two distance sensors, and no precise positioning is required.

[0037] Working principle: When in use, first put the rotor 2 on the positioning column 34, fix the rotor 2 by the pressure plate 35 and the support plate 32, and then irradiate one side of the rotor 2 through two sets of distance measuring sensors 42, and feed back the measurement data to the processor. The processor calculates the thickness of the rotor 2 according to the measurement data, and feeds back the thickness data to the controller. The controller generates a control signal according to the thickness data, and controls the servo electric cylinder 12 through the control signal to drive the upper and lower servo electric cylinders 12 to drive the high-speed motor 13 and the milling cutter 14 to move close to the rotor 2 until the milling cutter 14 moves to the corresponding side welding point. The high-speed motor 13 drives the milling cutter 14 to rotate at a high speed to cut the raised laser welding point. After cutting, the servo electric cylinder 12 drives the high-speed motor 13 and the milling cutter 14 to reset, and the stepper motor 31 rotates 22.5° and then stops, and continues to cut the next laser welding point until all 16 groups of welding points are cut and then stopped. It is not restricted by the workers' operating proficiency and ensures the machining accuracy of the rotor 2.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Automatic milling rotor laser welding device, characterized in that: include: A milling assembly (1) is used for milling raised laser welding spots on the upper and lower end surfaces of a rotor (2); The rotor (2) has a plurality of laser welding points distributed in an annular array on the upper and lower end surfaces; A workbench (3) is used to adjust the relative position of the laser welding point and the milling assembly (1) so that the milling assembly (1) can perform a milling operation on the laser welding point; The measuring component (4) measures the thickness of the rotor (2) and generates a control signal based on the thickness to control the movement distance of the milling component (1) relative to the rotor (2).

2. The automatic rotor laser welding device according to claim 1 is characterized in that: The workbench (3) comprises a stepper motor (31), a support plate (32), a base (33), a positioning column (34) and a pressing plate (35); the stepper motor (31) is fixed on the base (33); the support plate (32) is fixedly connected to the output shaft of the stepper motor (31); the positioning column (34) is fixed on the support plate (32); the rotor (2) is sleeved on the positioning column (34); and the pressing plate (35) is fixedly connected to the positioning column (34) after being pressed onto the rotor (2).

3. The automatic rotor laser welding device according to claim 2 is characterized in that: The milling assembly (1) comprises a frame (11) and a milling cutter assembly. The frame (11) is vertically fixed with two sets of milling cutter assemblies arranged on both sides of the rotor (2). The milling cutter assemblies are used to perform milling operations on laser welding points on the rotor (2).

4. The automatic rotor milling laser welding device according to claim 3 is characterized in that: The milling cutter assembly comprises a servo electric cylinder (12), a high-speed motor (13) and a milling cutter (14); the servo electric cylinder (12) is fixedly mounted on a frame (11); an output shaft of the servo electric cylinder (12) is fixedly connected to the high-speed motor (13); and the milling cutter (14) is fixedly sleeved on the output shaft of the high-speed motor (13).

5. The automatic rotor laser welding device according to claim 4 is characterized in that: The measuring component (4) comprises a bracket (41) and a distance measuring sensor (42); the bracket (41) is arranged on one side of the milling component (1) and the workbench (3); and two groups of distance measuring sensors (42) arranged on both sides of the rotor (2) are fixedly mounted on the bracket (41).

6. The automatic rotor laser welding device according to claim 5 is characterized in that: It also includes a processor and a controller. Two distance measuring sensors (42) illuminate one side of the rotor (2) and feed back measurement data to the processor. The processor calculates the thickness of the rotor (2) based on the measurement data and feeds back the thickness data to the controller. The controller generates a control signal based on the thickness data and controls the movement distance of the output shaft of the servo electric cylinder (12) through the control signal.

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