Medium cooling radial flux motor stator automatic welding device and welding process

Abstract

The invention discloses an automatic welding device and process for a medium cooling radial flux motor stator, and relates to the technical field of laser welding. The automatic welding device comprises a fixing base, a driving rotary disc and a clamping assembly; the driving rotary disc is provided with a threaded groove and rotationally connected with the fixing base. The clamping assembly comprises a plurality of clamping mechanisms, the multiple clamping mechanisms are arranged around the peripheral side of the driving rotary disc, each clamping mechanism comprises a clamping block and a power screw which are connected, the clamping blocks are slidably connected with the fixing base, and the power screws are connected with the threaded grooves in a matched and clamped mode in the radial direction of the driving rotary disc. And the driving turntable can simultaneously drive the plurality of power screws to radially move through the thread grooves, so that the plurality of clamping blocks are close to or far away from each other to clamp a stator or unlock the stator. The multiple clamping blocks can clamp the stator at the same time when the driving rotary disc rotates, the consistency of clamping and fixing of the stator can be kept, only the driving rotary disc needs to be controlled to rotate, and operation is convenient.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, specifically to an automatic welding device and welding process for a medium-cooled radial flux motor stator. Background Technology

[0002] With the widespread application of radial flux motors in industry, the production efficiency and quality control of their stators have become critical issues. Before welding, the stator needs to be completely fixed using positioning fixtures so that welding components can be used to stably weld the stator. The traditional fixing method involves setting multiple cylinders around the stator, with each cylinder abutting against multiple points on the stator's periphery to fix it in place.

[0003] However, traditional methods of fixing the stator have shortcomings. For example, each cylinder works independently and cannot be linked together to ensure the consistency of the stator fixing. In addition, the number of cylinders is large and they need to be controlled separately, which is costly. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an automatic welding device and welding process for a medium-cooled radial flux motor stator. This solves the technical problems of existing stator welding devices where multiple cylinders cannot be linked simultaneously to ensure consistent stator fixing; in addition, the large number of cylinders required for individual control leads to high costs.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides an automatic welding device for the stator of a dielectric-cooled radial flux motor, comprising: Fixed base; A drive turntable is provided with a threaded groove, and the drive turntable is rotatably connected to the fixed base; A clamping assembly includes a gravity sensor and multiple clamping mechanisms arranged around the periphery of a drive turntable. Each clamping mechanism includes a clamping block and a drive screw connected to each other. The clamping block is slidably connected to the fixed base. The drive screw is adapted to engage with a threaded groove along the radial direction of the drive turntable. When the drive turntable rotates, it can simultaneously drive the multiple drive screws radially through the threaded groove, causing the multiple clamping blocks to move closer together or further apart. The gravity sensor is located on the clamping block. The loading and unloading assembly includes a slide rail and a robotic arm. The slide rail is disposed on the fixed base, and the robotic arm is slidably disposed on the slide rail. The robotic arm is used to grab material between multiple clamping blocks, or to place the grabbed material between multiple clamping blocks. A welding assembly for welding the stator that is clamped and fixed by the plurality of clamping blocks.

[0006] In some embodiments, the clamping block has a first step, the first step of the plurality of clamping blocks has the same height, and the clamping space formed between the bottoms of the plurality of clamping blocks is smaller than the clamping space formed between the plurality of first steps.

[0007] In some embodiments, the clamping block further has a second step, the second steps of the plurality of clamping blocks have the same height, and the clamping space formed between the second steps of the plurality of clamping blocks is greater than the clamping space formed between the plurality of first steps.

[0008] In some embodiments, the first step, the second step, and the sidewalls at the bottom of the clamping block are all provided with anti-slip stripes.

[0009] In some embodiments, the fixing base has a through groove along its thickness direction, and the clamping mechanism further includes a nut and a mounting screw. One end of the mounting screw is connected to the clamping block, and the other end of the mounting screw passes through the groove and is threaded to the nut.

[0010] In some embodiments, the clamping assembly further includes a drive motor, which is disposed on the fixed base and connected to the drive turntable, and the drive turntable is rotatable relative to the fixed base under the drive of the drive motor.

[0011] In some embodiments, the automatic welding device further includes a loading and unloading assembly, which includes a slide rail, a robot arm, a drive wheel, and a sliding motor. The robot arm is rotated and locked onto the slide rail via the drive wheel. The sliding motor is located on the robot arm and connected to the drive wheel. When the sliding motor is working, it can drive the drive wheel to rotate, so that the drive wheel drives the robot arm to move along the slide rail.

[0012] In some embodiments, the robotic arm includes a main body, a loading / unloading motor, a first gear, a second gear, a first gripper, and a second gripper. The first gear and the second gear are both rotatably mounted on the main body and mesh with each other. The first gear is connected to the first gripper, and the second gear is connected to the second gripper. The first gripper and the second gripper are both rotatably connected to the main body. The loading / unloading motor is mounted on the main body and connected to the first gear.

[0013] In some embodiments, the loading and unloading assembly has two sets, which are respectively located on both sides of the drive turntable and can alternately load and unload materials during operation.

[0014] In some embodiments, the automatic welding device further includes a welding assembly, which includes a fixed bracket, a sliding frame, a lifting frame, a welding head, and an ultrasonic testing component. The sliding frame is slidably disposed on the fixed bracket along a first direction, the lifting frame is slidably disposed on the sliding frame along a second direction, and the welding head is slidably disposed on the lifting frame along a third direction. The first direction, the second direction, and the third direction are mutually perpendicular. The ultrasonic testing component is disposed on the welding head and is used to detect the stator weld after welding.

[0015] Secondly, the present invention also provides a welding process, implemented by the aforementioned medium-cooled radial flux motor stator automatic welding device, the welding process comprising the following steps: The robotic arm is used to pick up the stator to be welded and place it on the clamping block; When the gravity sensor on the clamping block detects that a stator is placed there, it controls the drive turntable to rotate, so as to drive multiple clamping mechanisms to come together and clamp and fix the stator. Welding is performed on the stator, which is held and fixed by multiple clamping blocks, using welding components; Ultrasonic waves are used to inspect the welds of the stator after welding. If the welds are not qualified, the cause is analyzed; if they are qualified, a robotic arm is used to pick up the qualified stator and cut it into pieces.

[0016] Compared with existing technologies, the automatic welding device provided by this invention has multiple clamping blocks forming a clamping space for clamping the stator. The size of the clamping space can be adjusted by moving the multiple clamping blocks closer together or further apart. Since the drive turntable is threadedly engaged with the power screws on the clamping blocks via its threaded grooves, the drive turntable, when rotating, can drive the multiple power screws to move radially along the drive turntable through the threaded engagement. This causes the multiple power screws to move the multiple clamping blocks closer together to clamp the stator, or further apart to unlock the stator. Therefore, the multiple clamping blocks of this invention can simultaneously clamp the stator when the drive turntable rotates, maintaining consistent stator clamping and fixation. Furthermore, only the rotation of the drive turntable needs to be controlled, making operation convenient and cost-effective. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the automatic welding device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the clamping assembly provided in this embodiment of the invention when clamping the stator; Figure 3 This is a schematic diagram of the structure of the clamping assembly provided in this embodiment of the invention when the stator is not clamped; Figure 4 This is a schematic diagram of the internal structure of the clamping assembly provided in an embodiment of the present invention; Figure 5This is a schematic diagram of the bottom structure of the clamping assembly provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the loading and unloading assembly provided in an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] To address the technical problems in existing stator welding devices where multiple cylinders cannot be simultaneously linked to ensure consistent stator fixation, and the high cost due to the large number of cylinders requiring individual control, this invention provides an automatic stator welding device and welding process for a medium-cooled radial flux motor. This device enables multiple clamping blocks to simultaneously clamp and fix the stator, improving the consistency of stator clamping. Furthermore, it is simple to operate; simply controlling the drive turntable to rotate is sufficient to clamp or unlock the stator.

[0020] It should be noted that the automatic welding device described in this invention is used for, but not limited to, the fixing and welding of stators. For ease of explanation, this invention will only use the application of the automatic welding device to the fixing and welding of stators as an example. The principle of the automatic welding device applied to other types of equipment is essentially the same as that applied to stators, and will not be described in detail here.

[0021] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an automatic welding device 100 according to an embodiment of the present invention. The automatic welding device 100 includes a fixed base 1, a drive turntable 2, and a clamping assembly 3. The drive turntable 2 has a threaded groove 21 and is rotatably connected to the fixed base 1. The clamping assembly 3 includes multiple clamping mechanisms 31, which are arranged around the periphery of the drive turntable 2. Each clamping mechanism 31 includes a clamping block 311 and a power screw 312 connected to it. Figure 4 As shown), the clamping block 311 is slidably connected to the fixed base 1, and the power screw 312 is adapted to and engaged with the threaded groove 21 along the radial direction of the drive turntable 2. When the drive turntable 2 rotates, the drive turntable 2 can simultaneously drive multiple power screws 312 to move radially through the threaded groove 21, so that multiple clamping blocks 311 move closer to each other or further apart.

[0022] In this embodiment, both the fixed base 1 and the drive turntable 2 are cylindrical and coaxially arranged, and are rotatably connected by bearings. This embodiment includes four clamping blocks 311, arranged around the periphery of the drive turntable 2, specifically at the four 90° apex corners of the drive turntable 2. Each clamping block 311 is radially connected to the fixed base 1 and is connected to a power screw 312. The power screw 312 has external threads that engage with the threaded groove 21 of the drive turntable 2. When the drive turntable 2 rotates, the power screw 312 is driven to reciprocate radially along the fixed base 1 through the threaded engagement, thereby causing the clamping blocks 311 to slide radially along the fixed base 1. When the four clamping blocks 311 slide close together (towards the center of the fixed base 1), they can abut against the stator 6 from four directions to clamp and fix the stator 6, allowing welding to be performed on the stator 6 at this time. After the stator 6 is welded, the drive turntable 2 can be rotated to drive the four clamping blocks 311 to slide away from each other. The four clamping blocks 311 can unlock the stator 6 at the same time, and the stator 6 can be taken out.

[0023] In this embodiment, the automatic welding device 100 only needs to rotate the drive turntable 2 to fix or unlock the stator 6. Multiple clamping blocks 311 can achieve one-click linkage, without the need to control the movement of each clamping block 311 individually, which improves the consistency of clamping the stator 6 and makes it convenient to use.

[0024] In one embodiment, the clamping assembly 3 further includes a drive motor (not shown in the figure), which is mounted on the fixed base 1 and connected to the drive turntable 2. The drive turntable 2 can rotate relative to the fixed base 1 under the drive of the drive motor. In this embodiment, the drive turntable 2 is driven by the drive motor, which can mesh with the drive turntable 2 and drive the drive turntable 2 to rotate through gear meshing. This automatic method of driving the drive turntable 2 to rotate has a high degree of automation. In other embodiments, the drive turntable 2 can also be driven to rotate manually.

[0025] In one embodiment, please refer to Figure 3The clamping block 311 has a first step 313. The first steps 313 of multiple clamping blocks 311 have the same height, and the clamping space formed between the bottoms of multiple clamping blocks 311 is smaller than the clamping space formed between multiple first steps. In this embodiment, the clamping block 311 can be understood as having multiple steps, and the clamping space formed by each step is of different sizes. The corresponding clamping block 311 step can be selectively used to abut against the stator 6 according to the diameter of the stator 6 to be clamped, so that stators 6 of various different sizes can be fixed, and the compatibility is strong. For example, the surface of the bottommost step of the clamping block 311 that contacts the stator 6 is the first surface 314, and the surface of the first step 313 that contacts the stator 6 is the second surface 315. When all the clamping blocks 311 are fixed in place, the clamping space formed between the multiple first surfaces 314 is smaller than the clamping space formed between the multiple second surfaces 315. Therefore, the larger stator 6 can be placed on the first step 313, and the smaller stator 6 can be placed in the clamping space at the bottom of the clamping blocks 311. In addition, each step of the clamping blocks 311 is equipped with a gravity sensor (not shown in the figure). The gravity sensor is used to sense the weight of the placed stator. This weight information can be transmitted to the control system. The control system is connected to all the electronic components in this application. The control system can set the welding laser intensity, welding speed, and welding path of the stator according to the weight information.

[0026] In one embodiment, please refer to Figure 3 The clamping block 311 also has a second step 316. The second steps 316 of the multiple clamping blocks 311 have the same height, and the clamping space formed between the second steps 316 of the multiple clamping blocks 311 is larger than the clamping space formed between the multiple first steps 313. In this embodiment, a step (second step) is added compared to the previous embodiment. The second step 316, compared to the first step 313, can accommodate a larger stator 6, further improving the compatibility of the clamping block 311 in fixing the stator 6. The surface of the second step 316 that abuts against the stator 6 is a third surface 317, and the clamping space formed between the multiple third surfaces 317 is larger than the clamping space formed between the multiple second surfaces 315.

[0027] In one embodiment, please refer to Figure 3 The first step 313, the second step 316, and the sidewalls at the bottom of the clamping block 311 are all provided with anti-slip stripes 318. Specifically, the first surface 314, the second surface 315, and the third surface 317 are all provided with anti-slip stripes 318, which are formed by multiple parallel and spaced elongated fine protrusions. The anti-slip stripes 318 are used to increase the friction between the clamping block 311 and the stator 6 when they abut against the stator 6, making the multiple clamping blocks 311 abut against the stator 6 more stable, preventing the stator 6 from shifting during the welding process, and allowing the welding components to be precisely welded to the stator 6 according to the preset path.

[0028] In one embodiment, please refer to Figure 3 and Figure 5 The fixing base 1 has a through groove 11 along its thickness direction. The clamping mechanism 31 also includes a nut 319 and a mounting screw 320. One end of the mounting screw 320 is connected to the clamping block 311, and the connection method is not limited, such as welding. The other end of the mounting screw 320 passes through the groove 11 and is threadedly connected to the nut 319. In this embodiment, the clamping mechanism 31 also includes a pad 321. The width of the pad 321 is greater than the width of the groove 11. The mounting screw 320 passes through the groove 11 and then through the pad 321. The nut 319 is threadedly connected to the end of the mounting screw 320 and abuts against the pad 321. The pad 321 can limit the mounting screw 320 to prevent it from disengaging from the groove 11. The clamping block 311 can also slide back and forth along the length direction of the groove 11.

[0029] In one embodiment, please refer to Figure 1 and Figure 5 The automatic welding device 100 also includes a loading and unloading assembly 4, which includes a slide rail 41, a robot arm 42, a drive wheel 43, and a sliding motor 44. The robot arm 42 is rotatably mounted on the slide rail 41 via the drive wheel 43. The sliding motor 44 is mounted on the robot arm 42 and connected to the drive wheel 43. When working, the sliding motor 44 can drive the drive wheel 43 to rotate, so that the drive wheel 43 drives the robot arm 42 to move along the slide rail 41. In this embodiment, the slide rail 41 has a slot 411 along its length. The drive wheel 43 is movably mounted in the slot 411. Driven by the sliding motor 44, the drive wheel 43 can rotate. When rotating, the drive wheel 43 can rotate along the circumference of the slot 411 through friction with the wall of the slot 411, thereby driving the robot arm 42 to move around the circumference of the slide rail 41 and adjusting the position of the robot arm 42. In addition, the loading and unloading assembly 4 also includes auxiliary wheels 45. In this embodiment, there are four auxiliary wheels 45 and four drive wheels 44. The four drive wheels 44 are located in the middle, and the four auxiliary wheels 45 are arranged in pairs on both sides. The auxiliary wheels 45 are used to increase the force-bearing area and assist the robot arm 42 in moving along the slide rail 41. The sliding motor 44 can drive one or more of the drive wheels 43 to rotate, thereby providing power for the movement of the robot arm 42.

[0030] In one embodiment, please refer to Figure 6The robotic arm 42 includes a main base 421, a loading / unloading motor 422, a first gear 423, a second gear 424, a first gripper 425, and a second gripper 426. Both the first gear 423 and the second gear 424 are rotatably mounted on the main base 421 and mesh with each other. The first gear 423 is connected to the first gripper 425, and the second gear 424 is connected to the second gripper 426. Both the first gripper 425 and the second gripper 426 are rotatably connected to the main base 421. The loading / unloading motor 422 is mounted on the main base 421 and connected to the first gear 423. In this embodiment, the structure of the first gripper 425 and the second gripper 426 and the kinematic principle driving their rotation are shown. The first gear 423 is fixedly connected to a first connecting rod 427, and the second gear 424 is fixedly connected to a second connecting rod 428. The end of the first connecting rod 427 away from the first gear 423 is rotatably connected to the first gripper 425, and the end of the second connecting rod 428 away from the second gear 424 is rotatably connected to the second gripper 426. The robotic arm 42 also includes a third link 429 and a fourth link 430. The two ends of the third link 429 are rotatably connected to the first gripper 425 and the main seat 421, respectively. The two ends of the fourth link 430 are rotatably connected to the second gripper 426 and the main seat 421, respectively. When the loading / unloading motor 422 drives the first gear 423 to rotate, the first gear 423 drives the first link 427 and the third link 429 to move, and the first link 427 and the third link 429 drive the first gripper 426 to rotate. Additionally, when the first gear 423 rotates, it meshes with and drives the second gear 424 to rotate. The second gear 424 drives the second link 428 and the fourth link 430 to rotate, and the second link 428 and the fourth link 430 drive the second gripper 426 to rotate. Therefore, based on the above description, when the loading / unloading motor 422 drives the first gear 423 to rotate, the first gripper 425 and the second gripper 426 move closer or further apart to grip or release the stator 6.

[0031] In one embodiment, please refer to Figure 1 The loading and unloading assembly 4 has two sets, which are respectively located on both sides of the drive turntable 2 and can alternately load and unload materials during operation. In this embodiment, by setting two sets of loading and unloading assemblies 4, one set of loading and unloading assembly 4 can be used to grab the stator 6 to be welded and place it in the clamping space, while the other set of loading and unloading assembly 4 can be used to grab the stator 6 that has been welded and transfer it to the unloading station. The two sets of loading and unloading assembly 4 work simultaneously, which can effectively improve work efficiency.

[0032] In one embodiment, please refer to Figure 1The automatic welding device 100 also includes a welding assembly 5, which includes a fixed bracket 51, a sliding frame 52, a lifting frame 53, a welding head 54, a lighting fixture 56, and an ultrasonic testing component 55. The sliding frame 52 is slidably mounted on the fixed bracket 51 along a first direction, the lifting frame 53 is slidably mounted on the sliding frame 52 along a second direction, and the welding head 54 is slidably mounted on the lifting frame 53 along a third direction. The first, second, and third directions are mutually perpendicular. The ultrasonic testing component 55 is mounted on the welding head 54 and is used to detect the weld seam of the stator 6 after welding. In this embodiment, the sliding frame 52 can slide back and forth along the X direction, the lifting frame 53 can slide back and forth along the Y direction, and the welding head 54 can slide back and forth along the Z direction, thereby adjusting the position of the welding head 54 in three-dimensional space, making it easy for the welding head 54 to reach any position and weld the stator 6 without dead angles. When the stator 6 is welded, the ultrasonic testing component 55 can be used to emit ultrasonic waves at the welded part of the stator 6, and the welding head 54 can be judged as qualified based on the feedback information of the ultrasonic waves. Once the stator 6 is successfully welded, it will be removed by the loading / unloading assembly 4. The lighting fixture 56 is used to emit light to illuminate the welding area.

[0033] Secondly, the present invention also provides a welding process, which is achieved by the aforementioned medium-cooled radial flux motor stator automatic welding device, and the welding process includes the following steps: The control system controls the robotic arm to grasp the stator 6 to be welded and place the stator on the clamping block 311; When the gravity sensor on the clamping block 311 detects that the stator 6 is placed, the control system controls the drive turntable 2 to rotate, so as to drive multiple clamping mechanisms 31 to move closer together to clamp and fix the stator 6. Based on the specifications and model of stator 6, the control system automatically calls the preset welding program and sets the welding parameters, such as the laser intensity, the rotation speed of the drive turntable, the welding speed, and the welding path. At the same time, the weld inspection system is activated to pre-inspect the welds of stator 6, obtaining the initial position and feature information of the welds to prepare for subsequent welding.

[0034] The identification device in the welding system accurately identifies the stator 6, obtaining its position and weld characteristics, and further adjusts the welding parameters and welding path. The laser welding device, according to the control system requirements, activates the laser output and welds along the preset welding path. During the welding process, the lighting fixture 56 provides sufficient illumination to ensure good visibility of the welding area, facilitating operator monitoring of the welding process. Welding components are used to weld the stator 6, which is held and fixed by multiple clamping blocks. The control system controls the ultrasonic testing component 55 to emit ultrasonic waves to inspect the weld seam of the stator after welding. If the weld seam is not qualified, the cause is analyzed; if the weld seam is qualified, the robotic arm 42 is used to pick up the qualified stator 6 and unload it.

[0035] To better understand this invention, the following is combined with... Figures 1 to 6 The technical solution of the present invention will be described in detail below: The automatic welding device 100 provided by the present invention has multiple clamping blocks 311 forming a clamping space for clamping the stator 6. The size of the clamping space can be adjusted by moving the multiple clamping blocks 311 closer together or further apart. Since the drive turntable 2 is threadedly engaged with the power screws 312 on the clamping blocks 311 through its threaded groove 21, the drive turntable 2 can drive the multiple power screws 312 to move radially along the drive turntable 2 when rotating. Thus, the multiple power screws 312 drive the multiple clamping blocks 311 to move closer together to clamp the stator 6 or move further apart to unlock the stator 6. It can be seen that the multiple clamping blocks 311 of the present invention can clamp the stator 6 simultaneously when the drive turntable 2 rotates, which can maintain the consistency of clamping and fixing the stator 6. Moreover, it only requires operating the drive turntable 2 to rotate, which is convenient to operate and has low cost.

[0036] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic welding device for the stator of a dielectric-cooled radial flux motor, characterized in that, include: Fixed base; A drive turntable is provided with a threaded groove, and the drive turntable is rotatably connected to the fixed base; A clamping assembly includes a gravity sensor and multiple clamping mechanisms arranged around the periphery of the drive turntable. Each clamping mechanism includes a clamping block and a power screw connected to each other. The clamping block is slidably connected to the fixed base. The power screw is adapted to engage with the threaded groove along the radial direction of the drive turntable. When the drive turntable rotates, the drive turntable can simultaneously drive the multiple power screws to move radially through the threaded groove, so that the multiple clamping blocks move closer or further apart. The gravity sensor is located on the clamping block. The loading and unloading assembly includes a slide rail and a robotic arm. The slide rail is disposed on the fixed base, and the robotic arm is slidably disposed on the slide rail. The robotic arm is used to grab material between multiple clamping blocks, or to place the grabbed material between multiple clamping blocks. and A welding assembly for welding the stator that is clamped and fixed by the plurality of clamping blocks.

2. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 1, characterized in that, The clamping block has a first step, and the first step of the plurality of clamping blocks has the same height. The clamping space formed between the bottoms of the plurality of clamping blocks is smaller than the clamping space formed between the plurality of first steps.

3. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 2, characterized in that, The clamping block also has a second step, the second steps of the plurality of clamping blocks have the same height, and the clamping space formed between the second steps of the plurality of clamping blocks is greater than the clamping space formed between the plurality of first steps.

4. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 3, characterized in that, The first step, the second step, and the sidewalls at the bottom of the clamping block are all provided with anti-slip stripes.

5. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 1, characterized in that, The fixing seat has a through groove along its thickness direction. The clamping mechanism also includes a nut and a mounting screw. One end of the mounting screw is connected to the clamping block, and the other end of the mounting screw passes through the groove and is threaded to the nut.

6. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 1, characterized in that, The clamping assembly also includes a drive motor, which is located on the fixed base and connected to the drive turntable. The drive turntable can rotate relative to the fixed base under the drive of the drive motor.

7. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 1, characterized in that, The loading and unloading assembly also includes a drive wheel and a sliding motor. The robot arm is rotated and locked onto the slide rail via the drive wheel. The sliding motor is located on the robot arm and connected to the drive wheel. When working, the sliding motor can drive the drive wheel to rotate, so that the drive wheel drives the robot arm to move along the slide rail.

8. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 7, characterized in that, The robotic arm includes a main base, a loading / unloading motor, a first gear, a second gear, a first gripper, and a second gripper. The first gear and the second gear are both rotatably mounted on the main base and mesh with each other. The first gear is connected to the first gripper, and the second gear is connected to the second gripper. The first gripper and the second gripper are both rotatably connected to the main base. The loading / unloading motor is mounted on the main base and connected to the first gear.

9. The automatic welding device for the stator of a medium-cooled radial flux motor according to claim 1, characterized in that, The automatic welding device further includes a welding assembly, which includes a fixed bracket, a sliding frame, a lifting frame, a welding head, and an ultrasonic testing component. The sliding frame is slidably disposed on the fixed bracket along a first direction, the lifting frame is slidably disposed on the sliding frame along a second direction, and the welding head is slidably disposed on the lifting frame along a third direction. The first direction, the second direction, and the third direction are mutually perpendicular. The ultrasonic testing component is disposed on the welding head and is used to detect the stator weld after welding.

10. A welding process, characterized in that, This is achieved using the automatic welding device for stator of a medium-cooled radial flux motor as described in any one of claims 1-9, wherein the welding process includes the following steps: The robotic arm is used to pick up the stator to be welded and place it on the clamping block; When the gravity sensor on the clamping block detects that a stator is placed there, it controls the drive turntable to rotate, so as to drive multiple clamping mechanisms to come together and clamp and fix the stator. Welding is performed on the stator, which is held and fixed by multiple clamping blocks, using welding components; Ultrasonic waves are used to inspect the welds of the stator after welding. If the welds are not qualified, the cause is analyzed; if they are qualified, a robotic arm is used to pick up the qualified stator and cut it into pieces.

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