Welding tool of automobile motor brush carrier and welding process thereof

Abstract

The invention provides a welding tool of an automobile motor brush carrier and a welding technology of the welding tool. The welding tool comprises a clamping assembly, and the clamping assembly comprises a welding table, a connecting frame, an adjusting base and a controller. Through cooperation of the brush carrier limiting seat, the positioning column and the positioning hole, the brush carrier body is preliminarily and accurately positioned, the clamping electric cylinder pushes the pressing plate and the anti-skid cushion to fix the brush carrier, it is guaranteed that the position of the brush carrier is accurate and stable during welding, displacement is avoided, the welding precision is improved, and the defective rate is reduced; by starting the left-right adjusting motor and the front-back adjusting motor, left-right movement of the brush carrier body and front-back position adjustment of the welding gun are achieved through the controller, compared with traditional manual adjustment, the operation is simpler, more convenient and more efficient, the adjustment consistency is good, and the production efficiency is greatly improved. Image information of a welding part is collected in real time through the camera and transmitted to the controller, an operator can observe through the touch screen, welding defects are found in time, the welding quality is guaranteed, and material waste and production delay are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a welding tool for an automobile motor brush holder and a welding process thereof. Background Art

[0002] In the manufacturing process of automotive motors, the motor brush holder plays an important role as a key component. The motor brush holder is mainly responsible for providing a stable current conduction path for the motor's rotor, and it is like the "current hub" of the motor. The quality of its welding will affect the performance and service life of the motor from multiple levels. If the welding quality is poor, such as cold welding, desoldering and other problems, the electrical connection between the brush holder and other components may be unstable when the motor is running, resulting in intermittent current transmission. This will cause the output torque of the motor to fluctuate, affecting the smooth operation of the vehicle's power system. During vehicle driving, acceleration setbacks, insufficient power and other phenomena may occur. Moreover, unstable current transmission will also cause additional resistance loss inside the motor, causing the motor to heat up more. Long-term abnormal heating will accelerate the aging of the motor winding insulation material, greatly shorten the service life of the motor, and may even cause motor failure, affecting the normal use of the vehicle. However, there are many problems with the traditional welding method of automotive motor brush holders;

[0003] 1. Traditional welding tools are often simple in structure and the positioning method is not accurate enough. For example, early tools only relied on simple slots or clamps to fix the brush holder, which made it difficult to ensure the accurate position of the brush holder during welding, resulting in large position deviation of the brush holder after welding, affecting the assembly accuracy inside the motor, and further affecting the motor performance. This inaccurate positioning problem resulted in a high defective rate of the product and increased production costs;

[0004] Second, the traditional tooling is cumbersome to operate when adjusting the welding position. Every time a brush holder of different specifications is replaced, workers need to spend a lot of time manually adjusting the relative position of the welding equipment and the brush holder. Moreover, this manual adjustment method is difficult to ensure the consistency of each adjustment, which seriously affects production efficiency;

[0005] 3. Traditional tooling lacks effective real-time monitoring methods. During the welding process, it is impossible to understand the actual situation of the welding part in time. Once welding defects such as pores and cracks appear, they are often not discovered until after the welding is completed, which not only causes material waste, but also delays production progress;

[0006] Therefore, a welding tool and a welding process for a brush holder of an automobile motor are proposed. Summary of the invention

[0007] In view of this, the present invention hopes to provide a welding tool for an automobile motor brush holder and a welding process thereof to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0008] In order to solve the above technical problems, a technical solution adopted in the present application is: a welding tool for an automobile motor brush holder, comprising a clamping assembly, wherein the clamping assembly comprises a welding table, a connecting frame, an adjustment seat, a limit groove, a mounting groove, a bidirectional synchronous motor, an adjustment screw, a slide groove, an L-shaped bracket, an adjustment screw hole, a through hole, a clamping electric cylinder, a pressure plate, an anti-slip buffer pad and a controller;

[0009] A connecting frame is fixedly connected to the middle of the upper surface of the welding table, and an adjusting seat is slidably connected to the upper surface of the connecting frame. A limiting groove is provided at the center of the upper surface of the adjusting seat, and a mounting groove is provided at the center of the inner bottom wall of the limiting groove. A bidirectional synchronous motor is fixedly connected to the inner side wall of the mounting groove, and both output ends of the bidirectional synchronous motor are fixedly connected to adjusting screws, and the ends of the two adjusting screws that are far away from each other respectively penetrate the centers of both sides of the inner side wall of the mounting groove, and sliding grooves are provided on both sides of the upper surface of the adjusting seat, and the inner side walls of the two sliding grooves are slidably connected with L shaped bracket, an adjusting screw hole is provided at the lower part of one side of the L-shaped bracket, the outer wall of the adjusting screw is threadedly connected to the inner wall of the adjusting screw hole, through holes are provided on the sides close to each other on the upper surfaces of the two L-shaped brackets, the inner walls of the two through holes are fixedly connected with clamping electric cylinders, the output ends of the two clamping electric cylinders are fixedly connected with pressure plates, and anti-slip buffer pads are provided on the sides close to the lower surfaces of the two pressure plates, a controller is provided at the front center of the upper surface of the welding table, and the input ends of the bidirectional synchronous motor and the clamping electric cylinder are electrically connected to the output end of the controller.

[0010] Provided as a further preferred embodiment of the present technical solution, an L-shaped welding bracket is fixedly connected to the center of the rear portion of the upper surface of the welding table, a through groove is provided at the front portion of the upper surface of the L-shaped welding bracket, sliding blocks are slidably connected to both sides of the inner side walls of the through groove, a first threaded rod passes through the upper portion of the rear surface of the L-shaped welding bracket, a first threaded hole is provided at the center of the front surface of the sliding block, the outer side wall of the first threaded rod is threadedly connected to the inner side wall of the first threaded hole, a mounting plate is fixedly connected to the bottom of the sliding block, a welding electric cylinder is fixedly connected to the bottom of the mounting plate, the output end of the welding electric cylinder is fixedly connected to a connecting seat, a welding gun is fixedly connected to one side of the lower surface of the connecting seat, a camera is provided on the other side of the lower surface of the connecting seat, the output end of the camera is electrically connected to the input end of the controller, and the input end of the welding gun is electrically connected to the output end of the controller.

[0011] Provided as a further preferred embodiment of the present technical solution, a second threaded rod passes through the center of one side of the connecting frame, a mounting hole is opened at the center of the other side of the connecting frame, a left and right adjustment motor is fixedly connected to the inner wall of the mounting hole, one end of the second threaded rod is fixedly connected to the output end of the left and right adjustment motor, the input end of the left and right adjustment motor is electrically connected to the output end of the controller, an adjustment block is fixedly connected at the center of the lower surface of the adjustment seat, a second threaded hole is opened at the center of one side of the adjustment block, and the outer wall of the second threaded rod is threadedly connected to the inner wall of the second threaded hole.

[0012] Provided as a further preferred embodiment of the present technical solution, a front and rear adjustment motor is fixedly connected to the upper portion of the rear surface of the L-shaped welding bracket near the outer side of the first threaded rod, the rear surface of the first threaded rod is fixedly connected to the output end of the front and rear adjustment motor, and the input end of the front and rear adjustment motor is electrically connected to the output end of the controller.

[0013] Provided as a further preferred embodiment of the present technical solution, the inner side wall of the limiting groove is fixedly connected to a brush holder limiting seat by a plurality of screws, a brush holder placement groove is provided at the center of the upper surface of the brush holder limiting seat, the inner side wall of the brush holder placement groove is fitly connected to a brush holder body, the front and rear parts of the inner bottom wall of the brush holder placement groove are fixedly connected to positioning columns, the front and rear parts of the upper surface of the brush holder body are provided with positioning holes, the outer side walls of the positioning columns are slidably connected to the inner side walls of the positioning holes, and the lower surfaces of the two anti-slip buffer pads are respectively fitly connected to the middle parts of both sides of the upper surface of the brush holder body.

[0014] As a further preferred embodiment of the present technical solution, T-shaped grooves are provided at the front and rear of the upper surface of the connecting frame, and T-shaped blocks are fixedly connected at the front and rear of the lower surface of the adjusting seat, and the outer wall of the T-shaped block is slidably connected to the inner wall of the T-shaped groove.

[0015] As a further preferred embodiment of the present technical solution, the front and rear portions of the two pressure plates that are away from each other are fixedly connected with a first limit block, the front and rear portions of the L-shaped bracket that are close to the pressure plate are provided with a first limit groove, the outer wall of the first limit block is slidably connected to the inner wall of the first limit groove, the middle portions of the inner front wall and the inner rear wall of the slide groove are provided with a second limit groove, the front surface and the lower portion of the rear surface of the L-shaped bracket are fixedly connected with a second limit block, and the outer wall of the second limit block is slidably connected to the inner wall of the second limit groove.

[0016] As a further preferred embodiment of the present technical solution, a third limiting groove is provided in the middle of both sides of the inner wall of the through groove, a third limiting block is fixedly connected to the middle of both sides of the sliding block, and the outer wall of the third limiting block is slidably connected to the inner wall of the third limiting groove.

[0017] As a further preferred embodiment of the present technical solution, a touch screen is provided on the upper surface of the controller, and pick-up and placement grooves are provided in the middle of both sides of the inner side walls of the brush holder placement groove.

[0018] In order to solve the above technical problems, another technical solution adopted in the present application is: a welding process for an automobile motor brush holder, comprising the following steps:

[0019] Step 1: According to the model of the brush holder body to be welded, fix the matching brush holder limit seat to the inside of the limit groove through multiple screws;

[0020] Step 2: Place the brush holder body in the brush holder placement slot, inserting the positioning column into the positioning hole on the brush holder body;

[0021] Step 3: Start the bidirectional synchronous motor to drive the two adjusting screws to rotate synchronously to adjust the distance between the two L-shaped brackets;

[0022] Step 4: Start the two clamping electric cylinders to push the pressing plate downward so that the anti-skid cushion at the bottom of the pressing plate fits with the edges on both sides of the upper surface of the brush holder body to clamp and fix the brush holder body;

[0023] Step 5: Start the left-right adjustment motor and the front-back adjustment motor to respectively drive the second threaded rod and the first threaded rod to rotate, and adjust the welding position of the brush holder body;

[0024] Step 6: Start the welding electric cylinder to drive the connecting seat, welding gun and camera to move downward to weld the welding part of the brush holder body. At the same time, the camera collects image information of the welding part of the brush holder body in real time and transmits it to the controller.

[0025] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0026] 1. The present invention uses the brush holder limit seat, positioning column and positioning hole to perform preliminary and accurate positioning of the brush holder body; the bidirectional synchronous motor drives the adjusting screw to adjust the distance of the L-shaped bracket, and the clamping electric cylinder pushes the pressing plate and the anti-skid buffer pad to fix the brush holder, so as to ensure that the brush holder is accurately and stably positioned during welding, avoid displacement, improve welding accuracy, and reduce the defective rate;

[0027] 2. The present invention drives the second threaded rod by the left-right adjustment motor and drives the first threaded rod by the front-back adjustment motor, respectively realizing the left-right movement of the brush holder body and the front-back position adjustment of the welding gun. These operations are all realized by the controller, which is simpler and more efficient than traditional manual adjustment, and has good adjustment consistency, greatly improving production efficiency;

[0028] 3. The present invention collects image information of the welding part in real time through the camera and transmits it to the controller. The operator can observe through the touch screen and find welding defects such as pores and cracks in time, which is convenient for real-time adjustment of welding position and parameters to ensure welding quality and reduce material waste and production delays;

[0029] 4. The present invention replaces the brush holder limit seat according to the model of the brush holder body, so that the tooling can adapt to the welding of brush holders of different specifications; the parameters of each motor and electric cylinder can be set in the controller to meet the welding of brush holders of different materials and welding requirements, and has strong versatility.

[0030] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a structural diagram of a perspective of the present invention;

[0033] Figure 2 Another perspective structural diagram of the present invention;

[0034] Figure 3 It is a structural diagram of the adjustment seat and the L-shaped bracket of the present invention;

[0035] Figure 4 This is a structural diagram of the L-shaped bracket and the clamping electric cylinder of the present invention;

[0036] Figure 5 It is a structural diagram of the adjustment seat and the brush holder limiting seat of the present invention;

[0037] Figure 6 It is a structural diagram of the connection frame and the adjustment seat of the present invention;

[0038] Figure 7 For the present invention Figure 6 Another perspective structure diagram;

[0039] Figure 8 This is a structural diagram of the welding electric cylinder and welding gun of the present invention.

[0040] Figure numerals: 1, clamping assembly; 11, welding table; 12, connecting frame; 13, adjusting seat; 14, limiting groove; 15, mounting groove; 16, bidirectional synchronous motor; 17, adjusting screw; 18, slide groove; 19, L-shaped bracket; 20, adjusting screw hole; 21, through hole; 22, clamping electric cylinder; 23, pressing plate; 24, anti-slip cushion; 25, controller; 26, L-shaped welding bracket; 27, through groove; 28, sliding block; 29, first threaded rod; 30, first threaded hole; 31, mounting plate; 32, welding electric cylinder; 33, connecting Seat; 34, welding gun; 35, camera; 36, second threaded rod; 37, mounting hole; 38, left and right adjustment motor; 39, adjustment block; 40, second threaded hole; 41, front and rear adjustment motor; 42, brush holder limit seat; 43, brush holder placement slot; 44, brush holder body; 45, positioning column; 46, positioning hole; 47, T-shaped slot; 48, T-shaped block; 49, first limit block; 50, first limit slot; 51, second limit slot; 52, second limit block; 53, third limit slot; 54, third limit block; 55, touch screen; 56, pick-and-place slot. DETAILED DESCRIPTION

[0041] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0042] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] Embodiment 1

[0044] like Figure 1-Figure 8 As shown, the embodiment of the present invention provides a welding tool for an automobile motor brush holder, including a clamping assembly 1, the clamping assembly 1 includes a welding table 11, a connecting frame 12, an adjustment seat 13, a limiting groove 14, a mounting groove 15, a bidirectional synchronous motor 16, an adjustment screw 17, a slide groove 18, an L-shaped bracket 19, an adjustment screw hole 20, a through hole 21, a clamping electric cylinder 22, a pressing plate 23, an anti-skid buffer pad 24 and a controller 25;

[0045] A connecting frame 12 is fixedly connected to the middle part of the upper surface of the welding table 11, and an adjusting seat 13 is slidably connected to the upper surface of the connecting frame 12. A limiting groove 14 is provided at the center of the upper surface of the adjusting seat 13, and a mounting groove 15 is provided at the center of the inner bottom wall of the limiting groove 14. A bidirectional synchronous motor 16 is fixedly connected to the inner side wall of the mounting groove 15, and the two output ends of the bidirectional synchronous motor 16 are fixedly connected to adjusting screws 17, and the ends of the two adjusting screws 17 that are far away from each other respectively penetrate the centers of the two sides of the inner side walls of the mounting groove 15. Slide grooves 18 are provided on both sides of the upper surface of the adjusting seat 13, and the inner side walls of the two slide grooves 18 are slidably connected with L-shaped brackets 19, and an adjusting screw hole 20 is provided at the lower part of one side of the L-shaped bracket 19, and the outer side wall of the adjusting screw 17 is threadedly connected to the inner side wall of the adjusting screw hole 20, and the upper surfaces of the two L-shaped brackets 19 are provided with through holes 21 on the sides close to each other. The inner wall of the hole 21 is fixedly connected with a clamping electric cylinder 22, and the output ends of the two clamping electric cylinders 22 are fixedly connected with a pressure plate 23. The side of the lower surface of the two pressure plates 23 that is close to each other is provided with an anti-skid buffer pad 24. A controller 25 is provided at the front center of the upper surface of the welding table 11. The input ends of the bidirectional synchronous motor 16 and the clamping electric cylinder 22 are electrically connected to the output end of the controller 25. The L-shaped bracket 19 slides inside the slide groove 18 to limit the position of the L-shaped bracket 19, thereby increasing the stability of the movement of the L-shaped bracket 19; the anti-skid and shock-absorbing function of the anti-skid buffer pad 24 is used to protect the surface of the brush holder body 44, and the two adjusting screws 17 are driven to rotate by the bidirectional synchronous motor 16, thereby driving the two L-shaped brackets 19 to move closer or farther away, thereby facilitating the adjustment of the position of the anti-skid buffer pad 24 at the bottom of the two pressure plates 23 according to the size of the brush holder body 44.

[0046] In one embodiment, specifically: an L-shaped welding bracket 26 is fixedly connected to the center of the rear portion of the upper surface of the welding table 11, a through groove 27 is provided at the front portion of the upper surface of the L-shaped welding bracket 26, and sliding blocks 28 are slidably connected to both sides of the inner side walls of the through groove 27, a first threaded rod 29 passes through the upper portion of the rear surface of the L-shaped welding bracket 26, a first threaded hole 30 is provided at the center of the front surface of the sliding block 28, the outer side wall of the first threaded rod 29 is threadedly connected to the inner side wall of the first threaded hole 30, a mounting plate 31 is fixedly connected to the bottom of the sliding block 28, a welding electric cylinder 32 is fixedly connected to the bottom of the mounting plate 31, a connecting seat 33 is fixedly connected to the output end of the welding electric cylinder 32, a welding gun 34 is fixedly connected to one side of the lower surface of the connecting seat 33, and a camera 35 is arranged on the other side of the lower surface of the connecting seat 33, the output end of the camera 35 is electrically connected to the input end of the controller 25, and the input end of the welding gun 34 is electrically connected to the output end of the controller 25, so that the welding process can be photographed through the camera 35 and transmitted to the controller 25.

[0047] In one embodiment, specifically: a second threaded rod 36 passes through the center of one side of the connecting frame 12, a mounting hole 37 is opened at the center of the other side of the connecting frame 12, a left and right adjustment motor 38 is fixedly connected to the inner wall of the mounting hole 37, one end of the second threaded rod 36 is fixedly connected to the output end of the left and right adjustment motor 38, the input end of the left and right adjustment motor 38 is electrically connected to the output end of the controller 25, an adjustment block 39 is fixedly connected to the center of the lower surface of the adjustment seat 13, a second threaded hole 40 is opened at the center of one side of the adjustment block 39, the outer wall of the second threaded rod 36 is threadedly connected to the inner wall of the second threaded hole 40, the second threaded rod 36 is driven to rotate by the right adjustment motor 38, thereby driving the adjustment seat 13 to move left and right, and then facilitating the left and right position adjustment of the brush holder body 44.

[0048] In one embodiment, specifically: the upper part of the rear surface of the L-shaped welding bracket 26 is fixedly connected to the outer side of the first threaded rod 29 with a front-and-rear adjustment motor 41, the rear surface of the first threaded rod 29 is fixedly connected to the output end of the front-and-rear adjustment motor 41, the input end of the front-and-rear adjustment motor 41 is electrically connected to the output end of the controller 25, and the first threaded rod 29 is driven to rotate by the front-and-rear adjustment motor 41, thereby driving the sliding block 28, the mounting plate 31, the welding electric cylinder 32, the connecting seat 33, the welding gun 34 and the camera 35 to move backward, thereby facilitating the front-and-rear position adjustment of the welding gun 34.

[0049] In one embodiment, specifically: the inner wall of the limiting groove 14 is fixedly connected to the brush holder limiting seat 42 by multiple screws, a brush holder placement groove 43 is opened at the center of the upper surface of the brush holder limiting seat 42, the inner wall of the brush holder placement groove 43 is fitted and connected to the brush holder body 44, the front and rear parts of the inner bottom wall of the brush holder placement groove 43 are fixedly connected with positioning columns 45, the front and rear parts of the upper surface of the brush holder body 44 are opened with positioning holes 46, the outer side walls of the positioning columns 45 are slidably connected to the inner side walls of the positioning holes 46, and the lower surfaces of the two anti-slip buffer pads 24 are respectively fitted and connected to the middle parts of both sides of the upper surface of the brush holder body 44, the brush holder placement groove 43 is used to facilitate the preliminary positioning of the brush holder body 44, and the cooperation of the positioning columns 45 and the positioning holes 46 is used to facilitate the further precise positioning of the brush holder body 44; by removing the screws, it is convenient to replace the appropriate brush holder limiting seat 42 according to the size and model of the brush holder body 44.

[0050] In one embodiment, specifically: T-shaped grooves 47 are provided at the front and rear of the upper surface of the connecting frame 12, and T-shaped blocks 48 are fixedly connected at the front and rear of the lower surface of the adjusting seat 13, and the outer wall of the T-shaped block 48 is slidably connected to the inner wall of the T-shaped groove 47. The T-shaped block 48 on the adjusting seat 13 slides inside the T-shaped groove 47, thereby limiting the position of the T-shaped block 48, thereby increasing the stability of the movement of the adjusting seat 13.

[0051] In one embodiment, specifically: the front and rear portions of the two pressing plates 23 that are away from each other are fixedly connected with a first limit block 49, the front and rear portions of the L-shaped bracket 19 that are close to the pressing plate 23 are provided with a first limit groove 50, the outer wall of the first limit block 49 is slidably connected to the inner wall of the first limit groove 50, the middle portions of the inner front wall and the inner rear wall of the slide groove 18 are provided with a second limit groove 51, the lower portions of the front surface and the rear surface of the L-shaped bracket 19 are fixedly connected with a second limit block 52, the outer wall of the second limit block 52 is slidably connected to the inner wall of the second limit groove 51, the first limit block 49 on the pressing plate 23 slides inside the first limit groove 50, thereby limiting the first limit block 49, thereby increasing the stability of the movement of the pressing plate 23; the second limit block 52 on the L-shaped bracket 19 slides inside the second limit groove 51, thereby limiting the second limit block 52, thereby increasing the stability of the movement of the L-shaped bracket 19.

[0052] In one embodiment, specifically: a third limiting groove 53 is opened in the middle of both sides of the inner wall of the through groove 27, and a third limiting block 54 is fixedly connected to the middle of both sides of the sliding block 28, and the outer wall of the third limiting block 54 is slidably connected to the inner wall of the third limiting groove 53. The third limiting block 54 on the sliding block 28 slides inside the third limiting groove 53, thereby limiting the third limiting block 54, thereby increasing the stability of the movement of the sliding block 28.

[0053] In one embodiment, specifically: a touch screen 55 is provided on the upper surface of the controller 25, and a pick-up and placement groove 56 is opened in the middle of both sides of the inner wall of the brush holder placement groove 43, through which the pick-up and placement groove 56 facilitates the pick-up and placement operation of the brush holder body 44 in the brush holder placement groove 43.

[0054] The embodiment of the present invention provides a welding tool for an automobile motor brush holder, which realizes precise positioning of a brush holder body 44 through a brush holder limit seat 42, a positioning column 45 and a positioning hole 46, and the brush holder limit seat 42 can be replaced according to the size and model of the brush holder body 44, and has strong versatility; the bidirectional synchronous motor 16 cooperates with the adjusting screw 17 to flexibly adjust the position of the pressure plate 23 to adapt to brush holder bodies 44 of different sizes, and the anti-skid buffer pad 24 protects the surface of the brush holder body 44, and the clamping is firm and reliable; the welding tool is also provided with multiple groups of motors and threaded rods, wherein the left and right adjustment motor 38 drives the second threaded rod 36 to realize the left and right position adjustment of the adjustment seat 13 and the brush holder body 44, and the front and rear adjustment motor 41 drives the first threaded rod 29 to realize the sliding block 28, the mounting plate 31, the welding electric cylinder 32, the connecting seat 33, the welding gun 34 and the camera The front and rear positions of components such as 35 can be adjusted, and the operation is simple and efficient; at the same time, the camera 35 collects welding images in real time and transmits them to the controller 25, which is convenient for monitoring the welding process; in addition, multiple limiting structures, such as the T-slot 47 on the connecting frame 12 and the T-block 48 on the adjusting seat 13, the first limiting block 49 on the pressing plate 23 and the first limiting slot 50 on the L-shaped bracket 19, the second limiting block 52 on the L-shaped bracket 19 and the second limiting slot 51 in the slide slot 18, and the third limiting block 54 on the sliding block 28 and the third limiting slot 53 in the through slot 27, greatly increase the movement stability of each component; the touch screen 55 of the controller 25 is easy to operate, and the pick-up and placement slot 56 of the brush holder placement slot 43 is convenient for picking up and placing the brush holder body 44, which improves the practicability and reliability of the welding tooling as a whole, and effectively improves the welding quality and production efficiency.

[0055] Embodiment 2

[0056] The embodiment of the present invention provides a welding process for an automobile motor brush holder, comprising the following steps:

[0057] Step 1: According to the model of the brush holder body 44 to be welded, the adapted brush holder limiting seat 42 is fixedly connected to the inside of the limiting groove 14 by multiple screws, ensuring that the brush holder limiting seat 42 is firmly installed and the brush holder placement groove 43 at the center is accurately positioned;

[0058] Step 2: Place the brush holder body 44 in the brush holder placement groove 43, insert the positioning column 45 into the positioning hole 46 on the brush holder body 44, and realize the preliminary positioning of the brush holder body 44;

[0059] Step 3: Start the bidirectional synchronous motor 16 to drive the two adjusting screws 17 to rotate synchronously, adjust the distance between the two L-shaped brackets 19, and make the anti-slip buffer pad 24 at the bottom of the pressing plate 23 be located at a suitable clamping position;

[0060] Step 4: Start the two clamping electric cylinders 22 to push the pressing plate 23 downward so that the anti-skid cushion 24 at the bottom of the pressing plate 23 fits with the edges on both sides of the upper surface of the brush holder body 44, clamps and fixes the brush holder body 44, and ensures that the brush holder body 44 will not be displaced during the welding process;

[0061] Step 5: Start the left-right adjustment motor 38 and the front-back adjustment motor 41 to respectively drive the second threaded rod 36 and the first threaded rod 29 to rotate, and adjust the welding position of the brush holder body 44, thereby driving the brush holder body (44) to adjust to a suitable left-right welding position;

[0062] Step 6: Start the welding electric cylinder 32 to drive the connecting seat 33, the welding gun 34 and the camera 35 to move downward, and weld the welding part of the brush holder body 44. At the same time, the camera 35 collects image information of the welding part of the brush holder body 44 in real time and transmits it to the controller 25. The operator can observe the situation of the welding part through the touch screen (55) on the controller (25).

[0063] Embodiment 3

[0064] This embodiment provides a welding tool for an automobile motor brush holder, which is applied to the welding process of a small automobile motor brush holder, and is specifically as follows:

[0065] Connect the 220V power supply, turn on the controller 25, set the forward speed of the bidirectional synchronous motor 16 to 5r / min in the operation interface of the controller 25, and test that it runs smoothly without abnormal noise; control the extension speed of the clamping electric cylinder 22 to 10mm / s and the retraction speed to 8mm / s, and check that its telescopic action is normal; set the lifting speed of the welding electric cylinder 32 to 15mm / s, and test that it runs stably; set the speed of the left and right adjustment motor 38 to 3r / min, and the speed of the front and rear adjustment motor 41 to 2r / min, and test that their forward and reverse functions are normal;

[0066] Use M5 screws to fix the brush holder limit seat 42 in the limit groove 14, and use a torque wrench to tighten the screws to 5 N·m in a diagonal tightening manner to ensure that the brush holder limit seat 42 is firmly installed and the center of the brush holder placement groove 43 coincides with the center of the limit groove 14;

[0067] The dimensions of the small automobile motor brush holder body 44 welded this time are 50 mm long, 30 mm wide and 20 mm high; carefully place the brush holder body 44 in the brush holder placement groove 43, align the positioning holes 46 on the brush holder body 44 with the positioning posts 45 at the front and rear of the bottom wall of the brush holder placement groove 43 accurately, and gently press the brush holder body 44 to ensure that the positioning posts 45 are fully inserted into the positioning holes 46 to achieve the initial positioning of the brush holder body 44;

[0068] In the operation interface of the controller 25, the bidirectional synchronous motor 16 is started. According to the size of the small brush holder body 44, it is observed that the initial distance between the two anti-skid buffer pads 24 is 80 mm. The operation time of the bidirectional synchronous motor 16 is set to 5 s through the controller 25, so that the two L-shaped brackets 19 move toward each other. After 5 s, the distance between the two anti-skid buffer pads 24 is adjusted to 40 mm by measuring with a caliper. At this time, the anti-skid buffer pads 24 are in a suitable clamping position, and the operation of the bidirectional synchronous motor 16 is stopped;

[0069] Operate the controller 25 and start the two clamping electric cylinders 22 at the same time. Observe that the output end of the clamping electric cylinder 22 pushes the pressure plate 23 to move downward at a speed of 10 mm / s. The anti-skid cushion pads 24 on the lower surfaces of the two pressure plates 23 gradually approach and fit the middle of both sides of the upper surface of the brush holder body 44. When the pressure plate 23 contacts the brush holder body 44, a certain pressure is continuously applied. The output pressure of the clamping electric cylinder 22 is set to 50 N through the controller 25 to firmly clamp the brush holder body 44 to ensure that the brush holder body 44 will not be displaced during the welding process.

[0070] After measurement, the brush holder body 44 needs to be moved 10mm to the left to align with the welding position; the left and right adjustment motor 38 is started on the controller 25, and its running time is set to 3s. The left and right adjustment motor 38 drives the second threaded rod 36 to rotate, and the adjustment seat 13 moves to the left on the upper surface of the connecting frame 12. After 3s, the displacement sensor is used to measure that the adjustment seat 13 moves 10mm, driving the brush holder body 44 to adjust to the appropriate left and right welding position, and the left and right adjustment motor 38 is stopped;

[0071] Through the observation of the camera 35, the brush holder body 44 needs to move forward 5mm, the front and rear adjustment motor 41 is started on the controller 25, and its running time is set to 2s. The front and rear adjustment motor 41 drives the first threaded rod 29 to rotate, and the sliding block 28 moves forward in the through groove 27, thereby driving the mounting plate 31, the welding electric cylinder 32, the connecting seat 33, the welding gun 34 and the camera 35 to move forward. After 2s, it is measured that the brush holder body 44 moves forward 5mm to reach the appropriate front and rear welding position, and the front and rear adjustment motor 41 is stopped;

[0072] The height of the welding part of the brush holder body 44 is measured to be 15mm, while the height of the welding head of the current welding gun 34 is 20mm; the welding electric cylinder 32 is operated by the controller 25, and its descending speed is set to 10mm / s, and the running time is 0.5s. The output end of the welding electric cylinder 32 retracts, driving the connecting seat 33, the welding gun 34 and the camera 35 to move downward. After 0.5s, the height gauge is used to measure that the distance between the welding head of the welding gun 34 and the welding part of the brush holder body 44 is adjusted to a suitable 3mm, and the operation of the welding electric cylinder 32 is stopped;

[0073] After completing the above position adjustment, the welding gun 34 and the camera 35 are turned on through the controller 25. The camera 35 collects image information of the welding part of the brush holder body 44 in real time and transmits it clearly to the 5-inch touch screen 55 of the controller 25. The operator can observe the situation of the welding part through the touch screen 55.

[0074] The brush holder body 44 of the small automobile motor welded this time is made of copper alloy. According to the welding process requirements, the welding current is set to 100A, the voltage is set to 20V, and the welding speed is set to 3mm / s on the controller 25. The operator observes the real-time image of the welding part through the touch screen 55, and operates the controller 25 to control the welding gun 34 to weld the brush holder body 44. During the welding process, the camera 35 is used to observe that the molten pool of the welding part is uniform, without defects such as pores and cracks, to ensure that the welding quality meets the requirements. If a slight deviation is found in the welding position, the left and right adjustment motor 38, the front and rear adjustment motor 41 and the welding electric cylinder 32 are fine-tuned by the controller 25 to accurately adjust the welding position;

[0075] After welding is completed, the power supply of the welding gun 34 is turned off on the controller 25, and then the controller 25 is operated to retract the output end of the clamping electric cylinder 22 at a speed of 8 mm / s, driving the pressing plate 23 to move upward and release the clamping of the brush holder body 44; the welded brush holder body 44 is taken out of the brush holder placement slot 43 through the pick-and-place slot 56;

[0076] Finally, use a wire brush to clean the welding slag remaining on the surface of the welding tooling. For areas that are difficult to clean, use a small shovel to gently scrape them off. After cleaning, wipe the surface of the tooling with a clean cloth to restore the welding tooling to its original state and prepare for the next welding operation.

[0077] Embodiment 4

[0078] This embodiment provides a welding tool for an automobile motor brush holder, which is applied to the welding process of a medium-sized automobile motor brush holder, and is specifically as follows:

[0079] Connect the 380V power supply, turn on the controller 25, set the forward speed of the bidirectional synchronous motor 16 to 8r / min and the reverse speed to 6r / min in the operation interface of the controller 25, and test its stable operation; control the extension speed of the clamping electric cylinder 22 to 15mm / s and the retraction speed to 12mm / s, and check its normal operation; set the lifting speed of the welding electric cylinder 32 to 20mm / s, and test its stable operation; set the speed of the left and right adjustment motor 38 to 5r / min and the speed of the front and rear adjustment motor 41 to 3r / min, and test their forward and reverse functions to be normal;

[0080] Use M5 high-strength screws to fix the brush holder limit seat 42 in the limit groove 14, and use a torque wrench to tighten the screws to 8 N·m in the prescribed tightening sequence to ensure that the brush holder limit seat 42 is firmly installed and the center position of the brush holder placement groove 43 is accurate;

[0081] The size of the medium-sized automobile motor brush holder body 44 welded this time is 80mm long, 50mm wide and 30mm high; the brush holder body 44 is stably placed in the brush holder placement groove 43, and the positioning holes 46 on the brush holder body 44 are accurately aligned with the positioning columns 45 at the front and rear of the bottom wall of the brush holder placement groove 43. The brush holder body 44 is gently pressed to ensure that the positioning columns 45 are fully inserted into the positioning holes 46 to achieve the initial positioning of the brush holder body 44;

[0082] In the operation interface of the controller 25, the bidirectional synchronous motor 16 is started, and it is observed that the initial distance between the two anti-skid buffer pads 24 is 120 mm. The operation time of the bidirectional synchronous motor 16 is set to 8 s through the controller 25, so that the two L-shaped brackets 19 move toward each other. After 8 s, the distance between the two anti-skid buffer pads 24 is adjusted to 70 mm using a distance meter. At this time, the anti-skid buffer pads 24 are in a suitable clamping position, and the operation of the bidirectional synchronous motor 16 is stopped;

[0083] Operate the controller 25 and start the two clamping electric cylinders 22 at the same time. Observe that the output end of the clamping electric cylinder 22 pushes the pressing plate 23 to move downward at a speed of 15 mm / s. The anti-skid cushions 24 on the lower surfaces of the two pressing plates 23 gradually approach and fit the middle of both sides of the upper surface of the brush holder body 44. When the pressing plate 23 contacts the brush holder body 44, the output pressure of the clamping electric cylinder 22 is set to 80 N through the controller 25 to firmly clamp the brush holder body 44 to ensure that the brush holder body 44 will not be displaced during the welding process.

[0084] After measurement, the brush holder body 44 needs to be moved 15mm to the right to align with the welding position. The left and right adjustment motor 38 is started on the controller 25, and its running time is set to 5s. The left and right adjustment motor 38 drives the second threaded rod 36 to rotate, and the adjustment seat 13 moves to the right on the upper surface of the connecting frame 12. After 5s, the displacement sensor is used to measure that the adjustment seat 13 moves 15mm, driving the brush holder body 44 to adjust to the appropriate left and right welding position, and the left and right adjustment motor 38 is stopped.

[0085] Through observation by the camera 35, the brush holder body 44 needs to move backwards by 8mm. The front-rear adjustment motor 41 is started on the controller 25 and its running time is set to 3s. The front-rear adjustment motor 41 drives the first threaded rod 29 to rotate, and the sliding block 28 moves backwards in the through slot 27, thereby driving the mounting plate 31, the welding electric cylinder 32, the connecting seat 33, the welding gun 34 and the camera 35 to move backwards. After 3s, it is measured that the brush holder body 44 moves backwards by 8mm and reaches the appropriate front-rear welding position, and the front-rear adjustment motor 41 is stopped.

[0086] The height of the welding part of the brush holder body 44 is measured to be 20mm, while the height of the welding head of the current welding gun 34 is 25mm. The welding electric cylinder 32 is operated by the controller 25, and its descending speed is set to 12mm / s, and the running time is 0.4s. The output end of the welding electric cylinder 32 retracts, driving the connecting seat 33, the welding gun 34 and the camera 35 to move downward. After 0.4s, the height gauge is used to measure that the distance between the welding head of the welding gun 34 and the welding part of the brush holder body 44 is adjusted to a suitable 4mm, and the operation of the welding electric cylinder 32 is stopped;

[0087] After completing the above position adjustment, the welding gun 34 and the camera 35 are turned on through the controller 25. The camera 35 collects image information of the welding part of the brush holder body 44 in real time and transmits it clearly to the 7-inch touch screen 55 of the controller 25. The operator can observe the situation of the welding part through the touch screen 55;

[0088] The brush holder body 44 of the medium-sized automobile motor welded this time is made of aluminum alloy. According to the welding process requirements, the welding current is set to 150A, the voltage is set to 25V, and the welding speed is set to 4mm / s on the controller 25. The operator observes the real-time image of the welding part through the touch screen 55, and operates the controller 25 to control the welding gun 34 to weld the brush holder body 44. During the welding process, the camera 35 is used to observe that the molten pool of the welding part is uniform, without defects such as pores and cracks, to ensure that the welding quality meets the requirements. If a slight deviation is found in the welding position, the left and right adjustment motor 38, the front and rear adjustment motor 41 and the welding electric cylinder 32 are fine-tuned by the controller 25 to accurately adjust the welding position;

[0089] After welding is completed, the power supply of the welding gun 34 is turned off on the controller 25. Then, the controller 25 is operated to make the output end of the clamping electric cylinder 22 retract at a speed of 12 mm / s, driving the pressing plate 23 to move upward and release the clamping of the brush holder body 44; the welded brush holder body 44 is taken out of the brush holder placement slot 43 through the pick-and-place slot 56;

[0090] Finally, use ultrasonic cleaning equipment to clean the welding slag and impurities remaining on the surface of the welding tooling. After cleaning, wipe the surface of the tooling with a clean cloth and restore the welding tooling to its original state, preparing for the next welding operation.

[0091] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A welding tool for an automobile motor brush holder, characterized in that: The invention comprises a clamping assembly (1), wherein the clamping assembly (1) comprises a welding platform (11), a connecting frame (12), an adjusting seat (13), a limiting groove (14), a mounting groove (15), a bidirectional synchronous motor (16), an adjusting screw rod (17), a slide groove (18), an L-shaped bracket (19), an adjusting screw hole (20), a through hole (21), a clamping electric cylinder (22), a pressing plate (23), an anti-skid buffer pad (24) and a controller (25); A connection frame (12) is fixedly connected to the middle of the upper surface of the welding platform (11), and an adjustment seat (13) is slidably connected to the upper surface of the connection frame (12). A limiting groove (14) is provided at the center of the upper surface of the adjustment seat (13), and a mounting groove (15) is provided at the center of the inner bottom wall of the limiting groove (14). A bidirectional synchronous motor (16) is fixedly connected to the inner side wall of the mounting groove (15), and both output ends of the bidirectional synchronous motor (16) are fixedly connected to adjusting screws (17), and the ends of the two adjusting screws (17) that are far away from each other respectively penetrate the centers of both sides of the inner side wall of the mounting groove (15). Slide grooves (18) are provided on both sides of the upper surface of the adjustment seat (13), and the inner side walls of the two slide grooves (18) are slidably connected to L-shaped supports. The welding table (11) is a welding table having a welding head (12) and a welding head (24). The welding head (12) is provided with a welding head (25). The welding head (12) is provided with a welding head (25) and a welding head (25) provided with a welding head (25). The welding head (12) is provided with a welding head (25) and a welding head (25) provided with a welding head (25). The welding head (12) is provided with a welding head (25) and a welding head (25) provided with a welding head (25). The welding head (12) is provided with a welding head (25) and a welding head (25) provided with a welding head (25). The welding head (12) is provided with a welding head (25) and a welding head (25) provided with a welding head (25). The welding head (12) is provided with a welding head (12 ...

2. The welding tool for automobile motor brush holder according to claim 1, characterized in that: An L-shaped welding bracket (26) is fixedly connected at the center of the rear portion of the upper surface of the welding platform (11); a through groove (27) is provided at the front portion of the upper surface of the L-shaped welding bracket (26); sliding blocks (28) are slidably connected to both sides of the inner side walls of the through groove (27); a first threaded rod (29) passes through the upper portion of the rear surface of the L-shaped welding bracket (26); a first threaded hole (30) is provided at the center of the front surface of the sliding block (28); the outer side wall of the first threaded rod (29) is threadedly connected to the inner side wall of the first threaded hole (30); the sliding block The bottom of (28) is fixedly connected to a mounting plate (31), the bottom of the mounting plate (31) is fixedly connected to a welding electric cylinder (32), the output end of the welding electric cylinder (32) is fixedly connected to a connecting seat (33), one side of the lower surface of the connecting seat (33) is fixedly connected to a welding gun (34), and the other side of the lower surface of the connecting seat (33) is provided with a camera (35), the output end of the camera (35) is electrically connected to the input end of the controller (25), and the input end of the welding gun (34) is electrically connected to the output end of the controller (25).

3. The welding tool for automobile motor brush holder according to claim 1 is characterized in that: A second threaded rod (36) passes through the center of one side of the connecting frame (12), a mounting hole (37) is provided at the center of the other side of the connecting frame (12), a left-right adjustment motor (38) is fixedly connected to the inner wall of the mounting hole (37), one end of the second threaded rod (36) is fixedly connected to the output end of the left-right adjustment motor (38), the input end of the left-right adjustment motor (38) is electrically connected to the output end of the controller (25), an adjustment block (39) is fixedly connected to the center of the lower surface of the adjustment seat (13), a second threaded hole (40) is provided at the center of one side of the adjustment block (39), and the outer wall of the second threaded rod (36) is threadedly connected to the inner wall of the second threaded hole (40).

4. The welding tool for automobile motor brush holder according to claim 2 is characterized in that: A front-rear adjustment motor (41) is fixedly connected to the upper portion of the rear surface of the L-shaped welding bracket (26) near the outer side of the first threaded rod (29); the rear surface of the first threaded rod (29) is fixedly connected to the output end of the front-rear adjustment motor (41); and the input end of the front-rear adjustment motor (41) is electrically connected to the output end of the controller (25).

5. The welding tool for automobile motor brush holder according to claim 1 is characterized in that: The inner side wall of the limiting groove (14) is fixedly connected to a brush holder limiting seat (42) by a plurality of screws, a brush holder placement groove (43) is provided at the center of the upper surface of the brush holder limiting seat (42), the inner side wall of the brush holder placement groove (43) is fittedly connected to a brush holder body (44), the front and rear parts of the inner bottom wall of the brush holder placement groove (43) are fixedly connected to positioning columns (45), the front and rear parts of the upper surface of the brush holder body (44) are provided with positioning holes (46), the outer side wall of the positioning column (45) is slidably connected to the inner side wall of the positioning hole (46), and the lower surfaces of the two anti-slip buffer pads (24) are respectively fittedly connected to the middle parts of both sides of the upper surface of the brush holder body (44).

6. The welding tool for automobile motor brush holder according to claim 1, characterized in that: The front and rear portions of the upper surface of the connection frame (12) are both provided with T-shaped grooves (47), the front and rear portions of the lower surface of the adjustment seat (13) are both fixedly connected with T-shaped blocks (48), and the outer side walls of the T-shaped blocks (48) are slidably connected to the inner side walls of the T-shaped grooves (47).

7. The welding tool for automobile motor brush holder according to claim 1, characterized in that: The front and rear parts of the two pressure plates (23) that are away from each other are fixedly connected with a first limit block (49), the front and rear parts of the side of the L-shaped bracket (19) close to the pressure plate (23) are both provided with a first limit groove (50), the outer wall of the first limit block (49) is slidably connected to the inner wall of the first limit groove (50), the middle part of the inner front wall and the inner rear wall of the slide groove (18) are both provided with a second limit groove (51), the lower part of the front surface and the rear surface of the L-shaped bracket (19) are fixedly connected with a second limit block (52), and the outer wall of the second limit block (52) is slidably connected to the inner wall of the second limit groove (51).

8. The welding tool for automobile motor brush holder according to claim 2, characterized in that: A third limiting groove (53) is provided in the middle of both sides of the inner side wall of the through groove (27), and a third limiting block (54) is fixedly connected to the middle of both sides of the sliding block (28), and the outer side wall of the third limiting block (54) is slidably connected to the inner side wall of the third limiting groove (53).

9. The welding tool for automobile motor brush holder according to claim 5, characterized in that: A touch screen (55) is provided on the upper surface of the controller (25), and pick-up and placement grooves (56) are provided in the middle of both sides of the inner side wall of the brush holder placement groove (43).

10. A welding process for an automobile motor brush holder, applied to a welding tool for an automobile motor brush holder as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: According to the model of the brush holder body (44) to be welded, the matching brush holder limiting seat (42) is fixedly connected to the inside of the limiting groove (14) by a plurality of screws; Step 2: Place the brush holder body (44) in the brush holder placement groove (43), and insert the positioning column (45) into the positioning hole (46) on the brush holder body (44); Step 3: Start the bidirectional synchronous motor (16) to drive the two adjusting screws (17) to rotate synchronously to adjust the distance between the two L-shaped brackets (19); Step 4: Start the two clamping electric cylinders (22) to push the pressing plate (23) downward so that the anti-skid cushion pad (24) at the bottom of the pressing plate (23) fits with the edges on both sides of the upper surface of the brush holder body (44), thereby clamping and fixing the brush holder body (44); Step 5: Start the left-right adjustment motor (38) and the front-back adjustment motor (41) to respectively drive the second threaded rod (36) and the first threaded rod (29) to rotate, and adjust the welding position of the brush holder body (44); Step 6: Start the welding electric cylinder (32) to drive the connecting seat (33), the welding gun (34) and the camera (35) to move downward, and weld the welding part of the brush holder body (44). At the same time, the camera (35) collects image information of the welding part of the brush holder body (44) in real time and transmits it to the controller (25).

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