Positioning tooling, laser welding equipment and welding method for magnetic ring assembly

Abstract

The present invention provides a positioning tool for a magnetic ring assembly, a laser welding device, and a welding method, belonging to the technical field of laser welding equipment. The laser welding device for the magnetic ring assembly includes a chassis, a surface of which is provided with a laser head assembly and a positioning tool for the magnetic ring assembly. The positioning tool includes a base, two ends of which are fixedly installed with a fixed seat 1 and a fixed seat 2, the fixed seat 1 being rotatably installed with an end cover positioning sleeve 1, the inner cavity of the end cover positioning sleeve 1 being axially slidably installed with a steel core positioning shaft 1; the fixed seat 2 being rotatably installed with a steel core positioning shaft 2; the base being slidably installed with a movable seat along the axial direction of the end cover positioning sleeve 1 between the fixed seat 1 and the fixed seat 2, the movable seat being rotatably installed with an end cover positioning sleeve 2; the end cover positioning sleeve 2 being set outside the steel core positioning shaft 2. The beneficial effect of the present invention is that the present invention can achieve the purpose of automatically positioning and assembling the magnetic ring assembly, and greatly improve the assembly and welding efficiency of the magnetic ring assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser welding equipment, and in particular relates to a positioning tool for a magnetic ring assembly, laser welding equipment and a welding method. Background Art

[0002] Magnetic ring components are commonly used anti-interference components in electronic circuits and have a good inhibitory effect on high-frequency noise. Figure 1 As shown, the common magnetic ring assembly is mainly composed of end covers, steel core and steel sleeve, and the steel sleeve is arranged on the outside of the steel core, the end covers are arranged on both ends of the steel core, and the outer ring of the end cover is welded to the corresponding end of the steel sleeve, and the inner ring of the end cover is welded to the corresponding shaft shoulder on the steel core.

[0003] Therefore, in the assembly process of the magnetic ring assembly, the most important step is the welding process, that is, the process of welding the outer ring of the end cover to the end of the steel sleeve and the inner ring of the end cover to the shoulder of the steel core. During this process, it is necessary to ensure that the relative positions of the end cover, steel sleeve and steel core cannot change, so as to avoid the problem of over-assembly or under-assembly of the weld and prevent the entire magnetic ring assembly from becoming scrap.

[0004] However, in actual operation, due to the lack of tooling specifically for the welding process of the above-mentioned magnetic ring assembly on the market, most of the current methods use manual assembly, first electric welding and then continuous welding. Therefore, when welding the end covers of the magnetic ring assembly, the existing welding method is prone to over-assembly or under-assembly problems at the weld due to different manual assembly forces, which in turn causes the finished product after welding to fail to meet the welding requirements; on the other hand, there is a problem of low work efficiency.

[0005] In addition, although there are a variety of positioning fixtures for welding equipment on the market, due to the particularity of the structure of the above-mentioned magnetic ring assembly, the positioning fixtures on the market cannot meet all the welding requirements of the above-mentioned magnetic ring assembly through one clamping, that is, they cannot simultaneously meet the positioning requirements required for welding between the outer ring of the end cover and the steel sleeve, as well as the positioning requirements required for welding between the inner ring of the end cover and the steel core through one clamping. Summary of the Invention

[0006] The object of the present invention is to provide a positioning tool, a laser welding device and a welding method for a magnetic ring assembly, and to enable the positioning tool and the laser welding device to improve the assembly accuracy and assembly efficiency of the magnetic ring assembly.

[0007] In order to achieve the above-mentioned purpose, on the one hand, the present invention provides a positioning tool for a magnetic ring assembly, which includes a base, wherein two ends of the base are respectively fixedly installed with a fixed seat 1 and a fixed seat 2, the fixed seat 1 is rotatably installed with an end cover positioning sleeve 1, the inner cavity of the end cover positioning sleeve 1 is axially slidably installed with a steel core positioning shaft 1, the steel core positioning shaft 1 is transmission-connected with a linear drive mechanism 1, and the end of the steel core positioning shaft 1 can extend out of the end cover positioning sleeve 1 and retract into the end cover positioning sleeve 1, and the steel core positioning shaft 1 and the end cover positioning sleeve 1 are both transmission-connected with a rotation drive mechanism; the fixed seat 2 is rotatably installed with a steel core positioning shaft 2, and the steel core positioning shaft 2 is arranged opposite to the steel core positioning shaft 1; the base is slidably installed with a movable seat along the axial direction of the end cover positioning sleeve 1 between the fixed seat 1 and the fixed seat 2, the movable seat is transmission-connected with a linear drive mechanism 2, and the movable seat is rotatably installed with the end cover positioning sleeve 2; the end cover positioning sleeve 2 is arranged on the outside of the steel core positioning shaft 2, and the end of the steel core positioning shaft 2 can extend out of the end cover positioning sleeve 2 and retract into the end cover positioning sleeve 2.

[0008] In this way, when the positioning tool for the magnetic ring assembly provided by the present invention is used to position the magnetic ring assembly, the steel core positioning shaft 1 can be first retracted into the end cover positioning sleeve 1, and the steel core positioning shaft 2 can be retracted into the end cover positioning sleeve 2, and the magnetic ring assembly can be placed between the end cover positioning sleeve 1 and the end cover positioning sleeve 2. Subsequently, the end cover positioning sleeve 2 is driven to approach the end cover positioning sleeve 1 by the linear drive mechanism 2 until the end cover positioning sleeve 1 and the end cover positioning sleeve 2 respectively contact and tighten with the two end covers of the magnetic ring assembly. At this time, the present invention can complete the axial positioning between the end cover and the steel sleeve through the cooperation between the end cover positioning sleeve 1 and the end cover positioning sleeve 2; and at this time, the present invention can drive the end cover positioning sleeve 1, the end cover positioning sleeve 2, and the magnetic ring assembly located between the end cover positioning sleeve 1 and the end cover positioning sleeve 2 to rotate through the rotation drive mechanism, and complete the welding between the end cover outer ring and the steel sleeve during the rotation process. Then, after the welding between the outer ring of the end cover and the steel sleeve is completed, the present invention can control the linear drive mechanism 1 to drive the steel core positioning shaft 1 to move in the direction close to the steel core positioning shaft 2, and control the linear drive mechanism 2 to drive the end cover positioning sleeve 2 to move in the direction away from the steel core positioning shaft 1. At this time, the present invention can drive the magnetic ring assembly to move in the direction close to the steel core positioning shaft 2 through the movement of the end cover positioning sleeve 2 and the steel core positioning shaft 1, until the end of the steel core positioning shaft 2 contacts the end cover on the corresponding side of the magnetic ring assembly, and the two shoulders of the steel core can be exposed. The present invention can drive the steel core positioning shaft 1, the steel core positioning shaft 2, and the magnetic ring assembly located between the steel core positioning shaft 1 and the steel core positioning shaft 2 to rotate through the rotation drive mechanism, and complete the welding between the inner ring of the end cover and the steel core during the rotation process.

[0009] Furthermore, the steel core positioning shaft 1 and the end cover positioning sleeve 1 share a set of rotation drive mechanisms, or the steel core positioning shaft 1 and the end cover positioning sleeve 1 are each connected to a set of rotation drive mechanisms, and the rotation drive mechanism preferably adopts a combination of a drive motor and a gear transmission structure, or a combination of a drive motor and a chain transmission structure, or a combination of a drive motor and a belt transmission structure.

[0010] Furthermore, when the steel core positioning shaft 1 and the end cover positioning sleeve 1 share a set of rotation drive mechanisms, the steel core positioning shaft 1 and the end cover positioning sleeve 1 are connected together through a key connection structure, and preferably a spline structure is adopted.

[0011] Furthermore, the second steel core positioning shaft and the second end cover positioning sleeve are connected together through a key connection structure, and a spline structure is preferably adopted.

[0012] Furthermore, the base is provided with a lifting platform between the movable seat and the fixed seat, and a bracket is provided on the upper part of the lifting platform. During the welding process of the magnetic ring assembly, the present invention can change the height of the bracket by controlling the lifting of the lifting platform, and enable the bracket to lift the magnetic ring assembly in the initial stage and the completion stage.

[0013] Furthermore, a pressure sensor is provided at the end of the steel core positioning shaft 2, and when the steel core positioning shaft 2 contacts the corresponding end cover on the magnetic ring assembly, the present invention can monitor the pressure between the end cover and the steel core positioning shaft 2 in real time through the pressure sensor located between the end cover and the steel core positioning shaft 2, and stop the movement of the steel core positioning shaft 1 when the pressure reaches a specified value.

[0014] In another aspect, the present invention provides a laser welding device for a magnetic ring assembly, comprising a chassis, a laser head assembly disposed on a surface of the chassis, and a positioning fixture for the magnetic ring assembly disposed on a surface of the chassis. The present invention enables corresponding welding operations through the cooperation between the laser head assembly and the positioning fixture.

[0015] Furthermore, the laser head assembly includes a three-dimensional motion module, which is installed on the surface of the chassis, and the output end of the three-dimensional motion module is transmission-connected to the welding laser head, so that the welding laser head can be located above the above-mentioned positioning tooling.

[0016] Furthermore, a cooling water system is provided on one side of the chassis, and the laser head assembly or the magnetic ring assembly is cooled by the cooling water system.

[0017] In addition, the present invention also provides a welding method for a magnetic ring assembly, which uses the above-mentioned laser welding equipment for a magnetic ring assembly and includes the following steps:

[0018] Step 1: Place the magnetic ring assembly between the end cap positioning sleeve 1 and the end cap positioning sleeve 2, and then drive the end cap positioning sleeve 2 to approach the end cap positioning sleeve 1 through the linear drive mechanism 2 until the end cap positioning sleeve 1 and the end cap positioning sleeve 2 respectively contact and tighten with the two end caps of the magnetic ring assembly;

[0019] Step 2: The rotary drive mechanism drives the end cap positioning sleeve 1, the end cap positioning sleeve 2, and the magnetic ring assembly located between the end cap positioning sleeve 1 and the end cap positioning sleeve 2 to rotate, and controls the laser head assembly to complete the welding between the end cap outer ring and the steel sleeve during the rotation process;

[0020] Step 3: Control the linear drive mechanism 1 to move the steel core positioning shaft 1 toward the steel core positioning shaft 2, and control the linear drive mechanism 2 to move the end cover positioning sleeve 2 away from the steel core positioning shaft 1, until the end of the steel core positioning shaft 2 contacts the end cover on the corresponding side of the magnetic ring assembly, and the two shaft shoulders of the steel core are exposed;

[0021] Step 4: Use the rotary drive mechanism to drive the steel core positioning shaft 1, the steel core positioning shaft 2, and the magnetic ring assembly located between the steel core positioning shaft 1 and the steel core positioning shaft 2 to rotate, and control the laser head assembly during the rotation process to complete the welding between the inner ring of the end cover and the steel core.

[0022] At this time, when the above-mentioned method provided by the present invention is used to assemble and weld the magnetic ring assembly, it can meet the purpose of automatically positioning and assembling the positioning tool after the components of the magnetic ring assembly are placed on the positioning tool, and make the entire welding process have the characteristics of high precision and high efficiency.

[0023] It can be seen from the above technical solution that the present invention has the following advantages: when the positioning tooling, laser welding equipment for the magnetic ring assembly provided by the present invention, and the welding method for the magnetic ring assembly provided by the present invention are used to assemble and weld the magnetic ring assembly, the present invention can achieve the purpose of automatic positioning and assembly of the magnetic ring assembly through the positioning tooling and the laser welding equipment, and in this process, the present invention only needs to clamp the magnetic ring assembly once, and the positioning requirements required for welding between the outer ring of the end cover and the steel sleeve, as well as the positioning requirements required for welding between the inner ring of the end cover and the steel core can be met in turn through the action of the positioning tooling, without manually changing the position of the magnetic ring assembly, and manually replacing and adjusting the tooling, thereby greatly improving the assembly and welding efficiency of the magnetic ring assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of a magnetic ring assembly in the prior art;

[0026] Figure 2 Schematic diagram of the three-dimensional structure of Example 1 of the present invention;

[0027] Figure 3 This is a front view of Example 1 of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0029] In the figure: 1. Welding laser head; 2. 3D motion module; 3. Chassis; 4. Positioning fixture; 5. Cooling water system; 6. End cover; 7. Steel core; 8. Steel sleeve;

[0030] 4.1. Base; 4.2. Rotary drive mechanism; 4.3. Linear drive mechanism 1; 4.4. End cover positioning sleeve 1; 4.5. Steel core positioning shaft 1; 4.6. Magnetic ring assembly; 4.7. End cover positioning sleeve 2; 4.8. Steel core positioning shaft 2; 4.9. Fixed seat 2; 4.10. Linear drive mechanism 2; 4.11. Moving seat; 4.12. Linear slide rail assembly; 4.13. Lifting platform; 4.14 Bracket. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figure 2 、 Figure 3 As shown, this embodiment 1 provides a positioning tool for a magnetic ring assembly, which includes a base 4.1, and the upper end of the base 4.1 is sequentially provided with a fixed seat 1, a lifting platform 4.13, a movable seat 4.11 and a fixed seat 2 4.9 in a straight line direction.

[0034] Among them, the fixed seat 1 is fixedly installed on the base 4.1 by fasteners such as bolts, and the fixed seat 1 is rotatably installed with an end cover positioning sleeve 1 4.4. The end of the end cover positioning sleeve 1 4.4 away from the fixed seat 2 4.9 extends out of the fixed seat 1 and is connected to a rotation drive mechanism 4.2. The rotation drive mechanism 4.2 is used to drive the end cover positioning sleeve 1 4.4 to rotate relative to the fixed seat 1, and it can adopt a combination of a drive motor and a gear transmission structure, or a combination of a drive motor and a chain transmission structure, or a combination of a drive motor and a belt transmission structure.

[0035] A steel core positioning shaft 4.5 is axially slidably mounted within the inner cavity of the end cap positioning sleeve 4.4. The middle portion of the steel core positioning shaft 4.5 and the end cap positioning sleeve 4.4 are preferably connected using a key connection structure or a groove and protrusion matching structure, allowing the steel core positioning shaft 4.5 to rotate with the end cap positioning sleeve 4.4. The end of the steel core positioning shaft 4.5, distal from the fixing seat 2 4.9, extends out of the fixing seat 1 and is then connected to a linear drive mechanism 4.3. The linear drive mechanism 4.3 is used to drive the steel core positioning shaft 4.5 to axially move relative to the end cap positioning sleeve 4.4. The end of the steel core positioning shaft 4.5 can extend out of and retract into the end cap positioning sleeve 4.4. The linear drive mechanism 4.3 is preferably a cylinder. In addition, the steel core positioning shaft 4.5 and the end cover positioning sleeve 4.4 can be connected together through other structures, and the steel core positioning shaft 4.5 and the end cover positioning sleeve 4.4 can also be respectively connected to a set of rotation drive mechanisms 4.2 for transmission.

[0036] The second fixing seat 4.9 is also fixedly mounted on the base 4.1 by bolts and other fasteners, and the second fixing seat 4.9 is rotatably mounted with the second steel core positioning shaft 4.8, and the second steel core positioning shaft 4.8 is arranged opposite to the first steel core positioning shaft 4.5.

[0037] The movable seat 4.11 is mounted between the fixed seat 1 and the fixed seat 2 4.9 via a linear guide rail assembly 4.12, sliding along the axial direction of the end cap positioning sleeve 1 4.4. A linear drive mechanism 2 4.10 is connected to the side of the movable seat 4.11 away from the fixed seat 1. The linear drive mechanism 2 4.10 is used to drive the movable seat 4.11 to move linearly. The linear drive mechanism 2 4.10 is preferably a cylinder. An end cap positioning sleeve 2 4.7 is rotatably mounted on the side of the movable seat 4.11 close to the fixed seat 1. The end cap positioning sleeve 2 4.7 can be sleeved on the outside of the steel core positioning shaft 2 4.8, so that the end of the steel core positioning shaft 2 4.8 can extend out of the end cap positioning sleeve 2 4.7 and retract into the end cap positioning sleeve 2 4.7 during the sliding process of the movable seat 4.11. In addition, in order to ensure the stability of the steel core positioning shaft 2 4.8, this embodiment 1 preferably connects the steel core positioning shaft 2 4.8 and the end cover positioning sleeve 2 4.7 together through a key connection structure, so that during the rotation of the steel core positioning shaft 2 4.8, the end of the steel core positioning shaft 2 4.8 can be supported by the end cover positioning sleeve 2 4.7.

[0038] The lower part of the lifting platform 4.13 is liftably arranged on the base 4.1, and the upper part of the lifting platform 4.13 is provided with a bracket 4.14. During the welding process of the magnetic ring assembly 4.6, this embodiment 1 can change the height of the bracket 4.14 by controlling the lifting and lowering of the lifting platform 4.13, and enables the bracket 4.14 to lift the magnetic ring assembly 4.6 in the initial stage and the completion stage.

[0039] Thus, when positioning the magnetic ring assembly 4.6 using the positioning fixture for the magnetic ring assembly provided in the first embodiment, the steel core positioning shaft 1 4.5 can be retracted into the end cover positioning sleeve 1 4.4, the steel core positioning shaft 2 4.8 can be retracted into the end cover positioning sleeve 2 4.7, and the magnetic ring assembly 4.6 can be placed on the bracket 4.14 between the end cover positioning sleeve 1 4.4 and the end cover positioning sleeve 2 4.7. Then, the linear drive mechanism 2 4.10 can be used to drive the end cover positioning sleeve 2 4.7 to approach the end cover positioning sleeve 1 4.4 until the end cover positioning sleeve 1 4.4 and the end cover positioning sleeve 2 4.7 are separated. The two end covers 6 of the magnetic ring assembly 4.6 are not in contact with each other and are tightened. At this time, the first embodiment can complete the axial positioning between the end cover 6 and the steel sleeve 8 through the cooperation between the end cover positioning sleeve 1 4.4 and the end cover positioning sleeve 2 4.7; and at this time, the first embodiment can control the bracket 4.14 to descend, control the rotation drive mechanism 4.2 to drive the end cover positioning sleeve 1 4.4, the end cover positioning sleeve 2 4.7, and the magnetic ring assembly 4.6 located between the end cover positioning sleeve 1 4.4 and the end cover positioning sleeve 2 4.7 to rotate, and complete the welding between the outer ring of the end cover 6 and the steel sleeve 8 during the rotation process.

[0040] Then, after the welding between the outer ring of the end cover 6 and the steel sleeve 8 is completed, the present embodiment 1 can control the linear drive mechanism 1 4.3 to drive the steel core positioning shaft 1 4.5 to move in the direction close to the steel core positioning shaft 2 4.8, and control the linear drive mechanism 2 4.10 to drive the end cover positioning sleeve 2 4.7 to move in the direction away from the steel core positioning shaft 1 4.5. At this time, the present embodiment 1 can drive the magnetic ring assembly 4.6 to move in the direction close to the steel core positioning shaft 2 4.8 through the movement of the end cover positioning sleeve 2 4.7 and the steel core positioning shaft 1 4.5, until the end of the steel core positioning shaft 2 4.8 contacts the end cover 6 on the corresponding side of the magnetic ring assembly 4.6, and the two shaft shoulders of the steel core 7 can be exposed. The present embodiment 1 can drive the steel core positioning shaft 1 4.5, the steel core positioning shaft 2 4.8, and the magnetic ring assembly 4.6 located between the steel core positioning shaft 1 4.5 and the steel core positioning shaft 2 4.8 to rotate through the rotation drive mechanism 4.2, and complete the welding between the inner ring of the end cover 6 and the steel core 7 during the rotation process.

[0041] In addition, as a preference, in order to ensure that the steel core positioning shaft 2 4.8 and the steel core positioning shaft 1 4.5 can clamp the magnetic ring assembly 4.6, the first embodiment is further provided with a pressure sensor at the end of the steel core positioning shaft 2 4.8, and when the steel core positioning shaft 2 4.8 contacts the corresponding end cover 6 on the magnetic ring assembly 4.6, the first embodiment can monitor the pressure between the end cover 6 and the steel core positioning shaft 2 4.8 in real time through the pressure sensor located between the end cover 6 and the steel core positioning shaft 2 4.8, and stop the movement of the steel core positioning shaft 1 4.5 when the pressure reaches a specified value.

[0042] Example 2

[0043] like Figure 4 As shown, this second embodiment provides a laser welding device for a magnetic ring assembly, which includes a chassis 3, a cooling water system 5 provided on one side of the chassis 3, and a laser head assembly and the positioning fixture for the magnetic ring assembly described in the first embodiment provided on the surface of the chassis 3. The laser head assembly includes a three-dimensional motion module 2, which is mounted on the surface of the chassis 3. The output end of the three-dimensional motion module 2 is transmission-connected to a welding laser head 1, and the welding laser head 1 can be positioned above the positioning fixture and cooperate with the positioning fixture 4 to perform the corresponding welding operation.

[0044] Example 3

[0045] The third embodiment provides a welding method for a magnetic ring assembly, which uses the laser welding equipment for the magnetic ring assembly described in the second embodiment and includes the following steps:

[0046] Step 1: Place the magnetic ring assembly 4.6 between the end cap positioning sleeve 1 4.4 and the end cap positioning sleeve 2 4.7. Then, use the linear drive mechanism 2 4.10 to drive the end cap positioning sleeve 2 4.7 toward the end cap positioning sleeve 1 4.4 until the end cap positioning sleeve 1 4.4 and the end cap positioning sleeve 2 4.7 respectively contact and tighten with the two end caps 6 of the magnetic ring assembly 4.6.

[0047] Step 2: The rotary drive mechanism 4.2 drives the end cap positioning sleeve 1 4.4, the end cap positioning sleeve 2 4.7, and the magnetic ring assembly 4.6 located between the end cap positioning sleeve 1 4.4 and the end cap positioning sleeve 2 4.7 to rotate, and during the rotation, the laser head assembly is controlled to complete the welding between the outer ring of the end cap 6 and the steel sleeve 8;

[0048] Step 3: Control the linear drive mechanism 1 4.3 to move the steel core positioning shaft 1 4.5 toward the steel core positioning shaft 2 4.8, and control the linear drive mechanism 2 4.10 to move the end cap positioning sleeve 2 4.7 away from the steel core positioning shaft 1 4.5, until the end of the steel core positioning shaft 2 4.8 contacts the end cap 6 on the corresponding side of the magnetic ring assembly 4.6, and the two shoulders of the steel core 7 are exposed;

[0049] Step 4: The rotation drive mechanism 4.2 drives the steel core positioning shaft 1 4.5, the steel core positioning shaft 2 4.8, and the magnetic ring assembly 4.6 located between the steel core positioning shaft 1 4.5 and the steel core positioning shaft 2 4.8 to rotate, and during the rotation process, the laser head assembly is controlled to complete the welding between the inner ring of the end cover 6 and the steel core 7.

[0050] At this time, when the magnetic ring assembly 4.6 is assembled and welded using the above method provided in the third embodiment, it can meet the purpose of automatically positioning and assembling the positioning tool 4 after the components of the magnetic ring assembly 4.6 are placed on the positioning tool 4, and the entire welding process has the characteristics of high precision and high efficiency.

[0051] In the present description and claims, as well as in the accompanying drawings, the terms "first," "second," "third," "fourth," and so forth (if any) are used to distinguish similar items and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "including," "comprising," and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

[0052] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning tool for a magnetic ring assembly, comprising a base (4.1); characterized in that: The two ends of the base (4.1) are respectively fixedly installed with a fixed seat 1 and a fixed seat 2 (4.9), the fixed seat 1 is rotatably installed with an end cover positioning sleeve 1 (4.4), the inner cavity of the end cover positioning sleeve 1 (4.4) is axially slidably installed with a steel core positioning shaft 1 (4.5), the steel core positioning shaft 1 (4.5) is transmission-connected with a linear drive mechanism 1 (4.3), and the end of the steel core positioning shaft 1 (4.5) can extend out of the end cover positioning sleeve 1 (4.4) and retract into the end cover positioning sleeve 1 (4.4), the steel core positioning shaft 1 (4.5) and the end cover positioning sleeve 1 (4.4) are both transmission-connected with a rotary drive mechanism (4.2); the fixed seat 2 (4.9) is rotatably installed with a steel core Positioning shaft 2 (4.8), steel core positioning shaft 2 (4.8) and steel core positioning shaft 1 (4.5) are arranged opposite to each other; the base (4.1) is provided with a movable seat (4.11) between fixed seat 1 and fixed seat 2 (4.9) and is slidably mounted along the axial direction of end cover positioning sleeve 1 (4.4); the movable seat (4.11) is transmission-connected with linear drive mechanism 2 (4.10); the movable seat (4.11) is rotationally mounted with end cover positioning sleeve 2 (4.7); the end cover positioning sleeve 2 (4.7) is sleeved on the outside of steel core positioning shaft 2 (4.8), and the end of the steel core positioning shaft 2 (4.8) can extend out of the end cover positioning sleeve 2 (4.7) and retract into the end cover positioning sleeve 2 (4.7).

2. The positioning fixture for the magnetic ring assembly according to claim 1, characterized in that: A pressure sensor is provided at the end of the steel core positioning shaft 2 (4.8).

3. The positioning fixture for the magnetic ring assembly according to claim 1, characterized in that: The base (4.1) is provided with a lifting platform (4.13) between the movable seat (4.11) and the fixed seat, and a bracket (4.14) is provided on the upper part of the lifting platform (4.13).

4. The positioning fixture for the magnetic ring assembly according to claim 1, 2 or 3, characterized in that: The steel core positioning shaft 1 (4.5) and the end cover positioning sleeve 1 (4.4) share a set of rotary drive mechanisms (4.2), or the steel core positioning shaft 1 (4.5) and the end cover positioning sleeve 1 (4.4) are each transmission-connected to a set of rotary drive mechanisms (4.2).

5. The positioning fixture for the magnetic ring assembly according to claim 4, characterized in that: When the steel core positioning shaft 1 (4.5) and the end cover positioning sleeve 1 (4.4) share a set of rotation drive mechanisms (4.2), the steel core positioning shaft 1 (4.5) and the end cover positioning sleeve 1 (4.4) are connected together through a key connection structure.

6. The positioning fixture for the magnetic ring assembly according to claim 1, 2 or 3, characterized in that: The steel core positioning shaft 2 (4.8) and the end cover positioning sleeve 2 (4.7) are connected together through a key connection structure.

7. A laser welding device for a magnetic ring assembly, comprising a chassis (3), wherein a laser head assembly is provided on the surface of the chassis (3); characterized in that: The surface of the chassis (3) is also provided with a positioning tool for the magnetic ring assembly according to any one of claims 1 to 6.

8. The laser welding equipment for magnetic ring assembly according to claim 7, characterized in that: The laser head assembly comprises a three-dimensional motion module (2), the three-dimensional motion module (2) is mounted on the surface of a chassis (3), and the output end of the three-dimensional motion module (2) is transmission-connected to a welding laser head (1).

9. The laser welding equipment for magnetic ring assembly according to claim 7, characterized in that: A cooling water system (5) is provided on one side of the chassis (3).

10. A welding method for a magnetic ring assembly, characterized in that: The laser welding device for a magnetic ring assembly according to any one of claims 7 to 9 comprises the following steps: Step 1: Place the magnetic ring assembly (4.6) between the end cover positioning sleeve 1 (4.4) and the end cover positioning sleeve 2 (4.7), and then drive the end cover positioning sleeve 2 (4.7) toward the end cover positioning sleeve 1 (4.4) through the linear drive mechanism 2 (4.10) until the end cover positioning sleeve 1 (4.4) and the end cover positioning sleeve 2 (4.7) respectively contact and tighten with the two end covers (6) of the magnetic ring assembly (4.6); Step 2: The end cover positioning sleeve 1 (4.4), the end cover positioning sleeve 2 (4.7), and the magnetic ring assembly (4.6) located between the end cover positioning sleeve 1 (4.4) and the end cover positioning sleeve 2 (4.7) are driven to rotate by the rotation drive mechanism (4.2), and the laser head assembly is controlled during the rotation process to complete the welding between the outer ring of the end cover (6) and the steel sleeve (8); Step 3: Control the linear drive mechanism 1 (4.3) to drive the steel core positioning shaft 1 (4.5) to move toward the steel core positioning shaft 2 (4.8), and control the linear drive mechanism 2 (4.10) to drive the end cover positioning sleeve 2 (4.7) to move away from the steel core positioning shaft 1 (4.5), until the end of the steel core positioning shaft 2 (4.8) contacts the end cover (6) on the corresponding side of the magnetic ring assembly (4.6), and the two shaft shoulders of the steel core (7) are exposed; Step 4: The steel core positioning shaft 1 (4.5), the steel core positioning shaft 2 (4.8), and the magnetic ring assembly (4.6) located between the steel core positioning shaft 1 (4.5) and the steel core positioning shaft 2 (4.8) are driven to rotate by the rotary drive mechanism (4.2), and the laser head assembly is controlled during the rotation process to complete the welding between the inner ring of the end cover (6) and the steel core (7).

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