An automated workstation for differential press-fitting and welding

Abstract

This application relates to an automated workstation for differential press-fitting and welding, belonging to the field of differential manufacturing technology. It includes a circular feed rail, an alignment table, a press-fitting robot, a press-fitting table, a welding robot, a welding table, a transfer table, and a grinding table. The circular feed rail is used to transport the housing and reduction gear to be assembled. The alignment table is used to adjust the posture of the housing. The press-fitting robot's actuator end is equipped with a mounting plate, a first clamp for holding the housing, and a second clamp for holding the reduction gear. The press-fitting table is used to press the reduction gear onto the housing. The welding robot is used to grab the pressed product and transfer it to the welding table. The welding table performs welding operations on the housing and reduction gear. After welding, the housing and reduction gear are grabbed by the welding robot, flipped, and moved to the grinding table, where the weld seams of the housing and reduction gear are ground. This application has the effect of improving differential production efficiency.

Description

Technical Field

[0001] This application relates to the field of differential manufacturing technology, and in particular to an automated workstation for differential press-fitting and welding. Background Technology

[0002] In the industrial manufacturing field, especially in the processing of automotive parts, the differential is a key component. The differential includes a housing, a planetary gear set, and a reduction gear. The planetary gear set is mounted on the planetary gear shaft inside the differential housing, and the reduction gear is fixed on the outside of the housing.

[0003] During the differential manufacturing process, the planetary gear set is first installed inside the housing, then the reduction gear is sleeved on the outside of the housing, then the reduction gear is welded to the outside of the housing, and finally the weld between the reduction gear and the housing is ground.

[0004] However, the production efficiency of differentials is relatively low because the various components are assembled by operators and then welded and polished. Summary of the Invention

[0005] To improve the production efficiency of differentials, this application provides an automated workstation for differential press-fitting and welding.

[0006] The differential press-fitting and welding automated workstation provided in this application adopts the following technical solution:

[0007] An automated workstation for differential press-fitting and welding includes a circular feed rail, an alignment table, a press-fitting robot, a press-fitting table, a welding robot, a welding table, a transfer table, and a grinding table.

[0008] The annular feeding rail is used to transport the housing to be assembled and the reduction gear;

[0009] The alignment platform is used to adjust the attitude of the housing;

[0010] The pressing robot is equipped with a mounting plate, a first clamp for holding the housing and a second clamp for holding the reduction gear. The pressing robot grabs the housing to the alignment table, and after the alignment table aligns the housing, it grabs the housing. After the pressing robot grabs the aligned housing and the reduction gear, it transfers them to the pressing table.

[0011] The pressing table is used to press the reduction gear onto the housing;

[0012] The welding robot is used to grasp the pressed product and transfer it to the welding table; the welding table performs welding operations on the shell and the reduction gear.

[0013] After the housing and the reduction gear are welded, they are picked up by a welding robot, flipped over, and moved to a grinding table, where the weld seams of the housing and the reduction gear are ground.

[0014] The welding robot grabs the polished product and transfers it to the transfer platform, and then the pressing robot grabs the polished product and transfers it to the circular feeding rail.

[0015] Optionally, the annular feeding rail includes a transfer frame, a transfer chain, a transfer sprocket, a transfer motor, and transfer clamps. The transfer chain, transfer sprocket, and transfer motor are all mounted on the transfer frame. The transfer chain is annular, and its connecting shaft is perpendicular to the ground. The transfer chain meshes with the transfer sprocket. The transfer motor drives the transfer sprocket to rotate. Multiple transfer clamps are provided and spaced apart on the transfer chain. Each transfer clamp includes a tray, a sleeve, and a limiting post. The tray is fixedly mounted on the transfer chain. The sleeve is coaxially mounted on the tray. Multiple limiting posts are provided on the tray and arranged circumferentially along the sleeve. The end of the housing is fitted onto the sleeve. A reduction gear is supported on the limiting post and fitted onto the housing. The annular feeding rail also includes a support member for supporting the tray and keeping it in a balanced state.

[0016] Optionally, the support member includes a first support member and a second support member. The first support member is located on the straight section of the transfer chain, and the second support member is located on the arc-shaped section of the transfer chain. The first support member includes a support plate disposed on the transfer frame. The support plate has two plates located on both sides of the straight section of the transfer chain. The top surface of the support plate is recessed and formed with a support groove. The first support member also includes a plurality of support wheels disposed in the support groove. The second support member includes a plurality of support columns disposed on the transfer frame. The support columns are located on the outer side of the transfer chain away from the transfer sprockets. The support columns are arranged along the extension direction of the arc-shaped section of the transfer chain. The second support member also includes support balls that are rolled on the support columns.

[0017] Optionally, both the first clamp and the second clamp include a mounting base and a slider disposed within the mounting base. The mounting base is disposed on a mounting plate, and three sliders are provided. The mounting base is provided with a first driving member for driving the sliders to slide. The first clamp also includes clamping fingers disposed on the sliders, and the second clamp also includes mounting fingers disposed on the sliders.

[0018] Optionally, the first clamp and the second clamp further include a pusher plate disposed in the mounting base. The pusher plate is triangular in shape and parallel to the bottom of the mounting base. A pusher rod is disposed in the mounting base, and the pusher plate is fixedly disposed on the pusher rod.

[0019] Optionally, the welding robot's execution end is provided with a connecting plate, and the connecting plate is provided with a third clamp and a flipping clamp. The third clamp is used to clamp the housing after welding the reduction gear. The flipping clamp includes a flipping seat, a flipping motor, grippers, and a drive cylinder. The flipping seat is fixedly mounted on the connecting plate, the flipping motor is mounted on the flipping seat, and the drive cylinder is mounted on the output shaft of the flipping motor. The grippers include two gripping blocks and a clamping seat. There are two gripping blocks, which are slidably mounted on the clamping seat. The drive cylinder is used to drive the two gripping blocks to move closer to each other or away from each other.

[0020] Optionally, the grinding table is equipped with a grinding fixture, a grinding wheel, a grinding motor, a lifting component, and a rotating component. The rotating component is mounted on the actuating end of the lifting component, the grinding fixture is mounted on the rotating component, and the grinding wheel is mounted on the grinding motor. The lifting component is used to drive the grinding fixture to perform lifting operations on the grinding table, and the rotating component is used to drive the grinding fixture to rotate. A support plate is provided on the grinding table, and the support plate is slidably mounted on the grinding table. The welded differential is picked up by the welding robot and placed on the support plate. The differential is then moved by the sliding of the support plate to be placed below the grinding fixture and held by the grinding fixture.

[0021] Optionally, the grinding fixture includes a grinding base, grinding fingers, and a second driving member. The grinding base is located at the output end of the rotating member. The grinding fingers are slidably disposed within the grinding base and arranged in a trident shape within the grinding base. The second driving member is used to drive the grinding fingers to slide and clamp the differential. An air pipe is provided at the bottom of the grinding base. The air pipe is perpendicular to the bottom surface of the grinding base and is slidably disposed within the grinding base. The air pipe slides in a vertical direction and is located on the axis of the grinding base. An electric push rod for driving the air pipe to slide into the housing is provided inside the grinding base. It also includes an air supply component. The air supply component is used to compress air and then pass it into the housing through the air pipe. The compressed air in the housing is discharged through the mounting holes and gaps of the housing to resist the dust entering the housing during grinding.

[0022] Optionally, the bottom of the air pipe is provided with an installation notch, which allows the gear set mounting shaft inside the housing to pass through so that the outlet of the air pipe is close to the through hole at the bottom of the housing, and the peripheral wall of the air pipe is provided with multiple air outlet holes.

[0023] Optionally, an annular cover is provided on the outside of the trachea. The annular cover is coaxially mounted on the trachea. The bottom of the annular cover is open, and the top of the annular cover is open and fixed to the trachea. The annular cover is sleeved on the upper half of the housing by being driven by an electric push rod.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] During differential assembly, the housing and reduction gear are first placed on a circular feeding rail. The circular feeding rail moves the housing and reduction gear closer to the pressing robot. The pressing robot then moves the housing from the circular feeding rail to the alignment table, followed by the reduction gear to the pressing table. The pressing robot then removes the housing from the alignment table and moves it to the pressing table. The pressing device on the pressing table then presses the reduction gear onto the housing. The welding robot then removes the pressed product and moves it to the grinding table. During this process, the product is rotated 180 degrees, and the grinding device on the grinding table grinds the weld seams. The welding robot then places the ground product on a transfer table and returns to the pressing table for product relocation. Finally, the pressing robot transfers the product from the transfer table to the circular feeding rail, thus completing the differential assembly, welding, grinding, and conveying operations, thereby improving the production efficiency of the differential. Attached Figure Description

[0026] Figure 1 This application describes a differential press-fitting and welding automated workstation containing a housing and a reduction gear to be assembled.

[0027] Figure 2 This is a schematic diagram of the layout of an automated workstation for differential press-fitting and welding according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of the annular feeding rail in an automated workstation for differential press-fitting and welding according to an embodiment of this application;

[0029] Figure 4 This is a partially enlarged schematic diagram of the annular feeding rail in an automated workstation for differential press-fitting and welding according to an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the structure of the transfer motor in an automated workstation for differential press-fitting and welding according to an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the press-fitting robot in an automated workstation for differential press-fitting and welding according to an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the structure of the press-fitting robot actuator in an automated workstation for differential press-fitting and welding according to an embodiment of this application;

[0033] Figure 8 This is a schematic diagram of the welding robot in an automated workstation for differential press-fitting welding according to an embodiment of this application;

[0034] Figure 9 This is a schematic diagram of the structure of the welding robot actuator in an automated workstation for differential press-fitting welding according to an embodiment of this application;

[0035] Figure 10 This is a schematic diagram of the grinding table in an automated workstation for differential press-fitting and welding according to an embodiment of this application;

[0036] Figure 11 This is a schematic diagram of the grinding fixture in an automated workstation for differential press-fitting and welding according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Reduction gear;

[0038] 3. Circular feeding rail; 31. Transfer frame; 32. Transfer chain; 33. Transfer sprocket; 34. Transfer motor; 35. Transfer clamp; 351. Pallet; 352. Sleeve; 353. Limiting post; 36. First support component; 361. Support plate; 362. Support wheel; 37. Second support component; 371. Support column; 372. Support ball bearing;

[0039] 4. Alignment platform; 5. Pressing robot; 6. Pressing table; 7. Welding robot; 8. Welding table; 9. Transfer table; 10. Grinding table; 11. Mounting plate; 12. Mounting base; 13. Slider; 14. Clamping fingers; 15. Mounting fingers; 16. Push plate; 17. Connecting plate;

[0040] 18. Tilting clamp; 181. Tilting base; 182. Tilting motor; 183. Gripper; 184. Drive cylinder;

[0041] 19. Grinding jig; 191. Grinding base; 192. Grinding finger clamp;

[0042] 20. Grinding wheel; 21. Grinding motor; 22. Lifting component; 23. Rotating component; 24. Bearing plate; 25. Grinding cylinder; 26. Air pipe. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1 -Appendix Figure 11 This application will be described in further detail.

[0044] This application discloses an automated workstation for differential press-fitting and welding. (Refer to...) Figure 1 and Figure 2 The differential press-fitting and welding automated workstation includes a circular feeding rail 3, an alignment table 4, a press-fitting robot 5, a press-fitting table 6, a welding robot 7, a welding table 8, a transfer table 9, and a grinding table 10.

[0045] The annular feeding rail 3 is used to transport the housing 1 to be assembled and the reduction gear 2;

[0046] The alignment platform 4 is used to adjust the attitude of the housing 1;

[0047] The pressing robot 5 is equipped with a mounting plate 11, a first clamp for holding the housing 1 and a second clamp for holding the reduction gear 2. The pressing robot 5 grabs the housing 1 to the alignment table 4, and after the alignment table 4 aligns the posture, it grabs the housing 1. After the pressing robot 5 grabs the aligned housing 1 and the reduction gear 2, it transfers them to the pressing table 6.

[0048] The pressing table 6 is used to press the reduction gear 2 onto the housing 1;

[0049] The welding robot 7 is used to grasp the pressed product and transfer it to the welding table 8; the welding table 8 performs welding operations on the housing 1 and the reduction gear 2;

[0050] After the housing 1 and the reduction gear 2 are welded, they are picked up by the welding robot 7, flipped and moved to the grinding table 10, where the grinding table 10 grinds the weld between the housing 1 and the reduction gear 2.

[0051] The welding robot 7 picks up the polished product and transfers it to the transfer table 9. Then, the pressing robot 5 picks up the polished product and transfers it to the circular feeding rail 3.

[0052] During differential assembly, the housing 1 and reduction gear 2 are first placed on the annular feed rail 3. The movement of the annular feed rail 3 drives the housing 1 and reduction gear 2 closer to the pressing robot 5. Then, the pressing robot 5 moves the housing 1 from the annular feed rail 3 to the alignment table 4, and then moves the reduction gear 2 to the pressing table 6. The pressing robot 5 then removes the housing 1 from the alignment table 4 and moves it to the pressing table 6. The pressing device on the pressing table 6 then presses the reduction gear 2 onto the housing 1. Finally, the welding robot... 7. Remove the pressed product and move it to the grinding table 10. During this process, the product is rotated 180 degrees. The grinding device on the grinding table 10 grinds the weld seam of the product. Then, the welding robot 7 places the ground product on the transfer table 9 and returns it to the pressing table 6 for product transfer. Subsequently, the pressing robot 5 transfers the product on the transfer table 9 to the circular feeding rail 3, thus completing the assembly, welding, grinding and conveying of the differential, thereby improving the production efficiency of the differential.

[0053] Reference Figure 2 In this embodiment, both the pressing robot 5 and the welding robot 7 are six-axis robots, which can perform multi-scene, angle-dependent gripping of the housing 1, the reduction gear 2 and the welded differential.

[0054] Reference Figure 3 , Figure 4 and Figure 5In this embodiment, the annular feeding rail 3 includes a transfer frame 31, a transfer chain 32, a transfer sprocket 33, a transfer motor 34, and a transfer clamp 35. The transfer chain 32, the transfer sprocket 33, and the transfer motor 34 are all mounted on the transfer frame 31. The transfer chain 32 is annular. Furthermore, the connecting shaft of the transfer chain 32 is perpendicular to the ground. The transfer sprocket 33 is circumferentially toothed. The transfer chain 32 and the transfer sprocket 33 mesh with each other. The transfer motor 34 is used to drive the transfer sprocket 33 to rotate. Multiple transfer clamps 35 are provided and spaced apart on the transfer chain 32.

[0055] Reference Figure 3 , Figure 4 and Figure 5 The transfer fixture 35 includes a pallet 351, a sleeve 352, and a limiting post 353. The pallet 351 is fixedly mounted on the transfer chain 32. The sleeve 352 is coaxially mounted on the pallet 351. Multiple limiting posts 353 are mounted on the pallet 351 and are arranged circumferentially along the sleeve 352. The end of the housing 1 is used to fit onto the sleeve 352. The reduction gear 2 is supported on the limiting post 353 and fitted onto the housing 1.

[0056] When feeding and unloading the differential housing 1 and the reduction gear 2, the end of the housing 1 is first placed on the sleeve 352 and inserted into the sleeve 352. Then, the reduction gear 2 is sleeved on the sleeve 352 and supported on the limit post 353. Then, the transfer motor 34 is started, and the transfer motor 34 drives the transfer sprocket 33 to rotate. The rotation of the transfer sprocket 33 drives the transfer chain 32 to run. The transfer chain 32 drives the pallet 351 to run. The running of the pallet 351 drives the housing 1 and the reduction gear 2 to run, and they run to the vicinity of the pressing robot 5. After the differential is welded, it is picked up by the pressing robot 5 and placed on the circular material rail. Then, the welded differential is transported to the manual loading point through the circular feeding rail 3, thus completing the loading and unloading of the differential.

[0057] Reference Figure 3 , Figure 4 and Figure 5 When the housing 1 and the reduction gear 2 are placed on the tray 351, the load on the tray 351 increases. Since the tray 351 is fixed on the transfer chain 32, the transfer chain 32 is prone to deflection and tilting, which causes the tray 351 to tilt, thus greatly affecting the conveying of the tray 351. Therefore, in this embodiment, the annular feeding rail 3 also includes a support member, which is used to support the tray 351 so that the tray 351 is in a balanced state.

[0058] Reference Figure 3 , Figure 4 and Figure 5The support includes a first support 36 and a second support 37. The first support 36 is located on the straight section of the transfer chain 32, and the second support 37 is located on the arc section of the transfer chain 32.

[0059] Reference Figure 3 , Figure 4 and Figure 5 The first support member 36 includes a support plate 361 mounted on the transfer frame 31. The support plate 361 has two supports located on either side of the straight section of the transfer chain 32. A support groove is recessed into the top surface of the support plate 361. The first support member 36 also includes multiple support wheels 362 mounted within the support groove. The rotation axis of the support wheels 362 is parallel to the horizontal plane of the transfer frame 31 and perpendicular to the running direction of the transfer chain 32. The bottom of the pallet 351 rests on the support wheels 362.

[0060] Reference Figure 3 , Figure 4 and Figure 5 The second support member 37 includes a plurality of support columns 371 disposed on the transfer frame 31. The support columns 371 are located on the outer side of the transfer chain 32 away from the transfer sprocket 33. The support columns 371 are arranged along the extension direction of the arc segment of the transfer chain 32. The second support member 37 also includes support balls 372 that are rolled on the support columns 371.

[0061] During the operation of pallet 351, when pallet 351 reaches the straight section of transfer chain 32, the bottom of pallet 351 rests on the support wheel. The movement of pallet 351 drives the support wheel to rotate, thus supporting pallet 351 and keeping it in a horizontal position. When pallet 351 reaches the curved section of transfer chain 32, the bottom of pallet 351 rests on the support ball bearing 372. The support ball bearing 372 supports pallet 351, reducing the possibility of pallet 351 tilting and improving the stability of pallet 351 operation, which facilitates the transport of housing 1, reduction gear 2 and differential.

[0062] Reference Figure 6 and Figure 7 In this embodiment of the application, both the first clamp and the second clamp include a mounting base 12 and a slider 13 disposed in the mounting base 12. The mounting base 12 is disposed on the mounting plate 11. There are three sliders 13. The mounting base 12 is provided with a first driving member for driving the sliders 13 to slide. The first driving member includes a first hydraulic cylinder disposed in the mounting base 12. The slider 13 is disposed on the piston rod of the first hydraulic cylinder.

[0063] Reference Figure 6 and Figure 7 Furthermore, the first clamp also includes a clamping finger 14 disposed on the slider 13, and the second clamp also includes a mounting finger 15 disposed on the slider 13.

[0064] When gripping the housing 1 and the reduction gear 2, the first hydraulic cylinder is activated, which drives the slider 13 to slide. The slider 13 drives the clamping fingers 14 and the mounting fingers 15 to slide. The clamping fingers 14 and the mounting fingers 15 move closer to each other, thus clamping the housing 1 and the reduction gear 2. The operation is simple and convenient.

[0065] Reference Figure 6 and Figure 7 In this embodiment, the first clamp and the second clamp further include a pusher plate 16 disposed in the mounting base 12. The pusher plate 16 is triangular in shape and parallel to the bottom of the mounting base 12. A pusher rod is disposed in the mounting base 12, and the pusher plate 16 is fixedly disposed on the pusher rod. When the first clamp and the second clamp clamp the housing 1 and the reduction gear 2, after the housing 1 and the reduction gear 2 enter the space of the clamping fingers 14 and the mounting fingers 15, the pusher rod is activated. The pusher rod drives the pusher plate 16 to move. The pusher plate 16 moves and presses against the ends of the housing 1 and the reduction gear 2, thereby positioning the housing 1 and the reduction gear 2 and improving the gripping accuracy of the housing 1 and the reduction gear 2.

[0066] Reference Figure 8 and Figure 9 In this embodiment of the application, the welding robot 7 is provided with a connecting plate 17 at its execution end. The connecting plate 17 is provided with a third clamp and a flipping clamp 18. The third clamp is used to clamp the housing 1 after welding the reduction gear 2. The structure of the third clamp is the same as that of the second clamp.

[0067] Reference Figure 8 and Figure 9 The flipping fixture 18 includes a flipping base 181, a flipping motor 182, a gripper 183, and a drive cylinder 184. The flipping base 181 is fixedly mounted on the connecting plate 17, the flipping motor 182 is mounted on the flipping base 181, and the drive cylinder 184 is mounted on the output shaft of the flipping motor 182. The gripper 183 includes two gripping blocks and a gripping seat. There are two gripping blocks, which are slidably mounted on the gripping seat. The drive cylinder 184 is used to drive the two gripping blocks to move closer to each other or away from each other.

[0068] When the welding robot 7 clamps the press-fitted differential, the third clamp holds the differential. After the differential welding is completed, the welding robot 7's flipping clamp 18 holds the differential and then moves it to the grinding table 10. Then, the flipping motor 182 drives the gripper 183 to rotate 180 degrees and then places the differential on the grinding table 10 for subsequent differential grinding operations.

[0069] Reference Figure 10 and Figure 11In this embodiment of the application, the grinding table 10 is provided with a grinding fixture 19, a grinding wheel 20, a grinding motor 21, a lifting member 22 and a rotating member 23. The rotating member 23 is disposed on the execution end of the lifting member 22, the grinding fixture 19 is disposed on the rotating member 23, the grinding wheel 20 is disposed on the grinding motor 21, the lifting member 22 is used to drive the grinding fixture 19 to perform lifting operations on the grinding table 10, and the rotating member 23 is used to drive the grinding fixture 19 to rotate.

[0070] Reference Figure 10 and Figure 11 The lifting component 22 includes a mounting column, a rectangular tube, a fixing plate, a fourth motor, a second rack and a second gear. The mounting column is fixedly mounted on the grinding table 10, the fixing plate is fixedly mounted on the mounting column, and the rectangular tube is fixedly mounted on the fixing plate. A rectangular hole is opened in the center of the fixing plate, and the rectangular tube surrounds the rectangular hole.

[0071] Reference Figure 10 and Figure 11 The lifting component 22 also includes a lifting column, which is sleeved in the rectangular hole. Furthermore, the second rack is vertically arranged and fixedly arranged on the lifting column, the fourth motor is fixedly arranged on the side wall of the rectangular tube and the conveying shaft enters the rectangular tube, and the second gear is coaxially arranged on the output shaft of the fourth motor and meshes with the second rack.

[0072] Reference Figure 10 and Figure 11 The rotating component 23 includes a base plate at the bottom of the lifting column, a rotating motor and a drive gear. The rotating motor is fixedly mounted on the base plate, and the drive gear is mounted on the output shaft of the rotating motor and sleeved on the grinding fixture 19. The two drive gears mesh with each other.

[0073] Reference Figure 10 and Figure 11 A bearing plate 24 is provided on the grinding table 10. The bearing plate 24 is slidably mounted on the grinding table 10. The welding robot 7 grabs the welded differential and places it on the bearing plate 24. The bearing plate 24 then slides and moves the differential to be placed under the grinding fixture 19 and held by the grinding fixture 19. Furthermore, a grinding cylinder 25 is provided on the grinding table 10, and the bearing plate 24 is fixedly mounted on the piston rod of the grinding cylinder 25.

[0074] After the welding robot 7 moves the welded differential onto the support plate 24, the grinding cylinder 25 pulls the support plate 24 to slide directly below the grinding fixture 19. Then, the lifting column moves down to allow the differential to enter the grinding fixture 19. The grinding fixture 19 then clamps the differential. The rotating motor is then started, which drives the drive gear to rotate, thereby rotating the grinding fixture 19 and the differential, facilitating the grinding operation of the differential.

[0075] Reference Figure 10 and Figure 11 In this embodiment, the grinding fixture 19 includes a grinding base 191, grinding fingers 192, and a second driving member. The grinding base 191 is disposed at the output end of the rotating member 23. The grinding fingers 192 are slidably disposed within the grinding base 191 and are arranged in a trident shape within the grinding base 191. The second driving member is used to drive the grinding fingers 192 to slide and clamp the differential. The second driving member includes a movable cylinder disposed within the grinding base 191, and the grinding fingers 192 are fixedly disposed on the piston rod of the movable cylinder. When the differential enters the space of the grinding fingers 192, the movable cylinder is activated, and the movable cylinder drives the grinding fingers 192 to move and clamp the differential. The operation is simple and convenient.

[0076] Reference Figure 10 and Figure 11 When the grinding motor 21 drives the grinding wheel 20 to rotate, the grinding wheel 20 grinds the weld seams of the differential. During the grinding process, a large amount of dust and metal debris are generated. This dust and metal debris can enter the differential housing 1 and adhere to the corresponding gears, causing the differential to jam. Therefore, it is necessary to minimize the amount of dust and debris entering the differential during the grinding process. Currently, dust is usually treated by suction, but the dust suction effect is generally not very good. Therefore, in this embodiment, the grinding seat... The bottom of the grinding base 191 is provided with an air pipe 26, which is perpendicular to the bottom surface of the grinding base 191. The air pipe 26 is slidably disposed in the grinding base 191 and slides in the vertical direction. The air pipe 26 is located on the axis of the grinding base 191. The grinding base 191 is provided with an electric push rod for driving the air pipe 26 to slide into the housing 1. It also includes an air supply component, which is used to compress air and then pass it into the housing 1 through the air pipe 26. The compressed air in the housing 1 is discharged through the mounting holes and gaps of the housing 1 to resist the dust entering the housing 1 during grinding. The air supply component includes an air pump disposed on the base plate, and the air pipe 26 is connected to the air pump port.

[0077] When the grinding motor 21 drives the grinding wheel 20 to rotate, the electric push rod is first activated, which drives the air pipe 26 to move. The air pipe 26 moves towards the differential and enters the differential. Then the air pump is activated, which injects air into the housing 1 and sprays it out from the port and gap of the housing 1, thus avoiding the possibility of dust and debris entering the differential and improving the quality of the differential.

[0078] Reference Figure 10 and Figure 11 In this embodiment of the application, the bottom of the air pipe 26 is provided with an installation notch, which allows the gear set mounting shaft inside the housing 1 to pass through so that the outlet of the air pipe 26 is close to the bottom through hole of the housing 1. The peripheral wall of the air pipe 26 is provided with multiple air outlet holes.

[0079] Reference Figure 10 and Figure 11 Furthermore, an annular cover is provided on the outside of the air pipe 26. The annular cover is coaxially mounted on the air pipe 26, with an opening at the bottom and an opening at the top, and is fixed to the air pipe 26. The annular cover is driven by an electric push rod to fit onto the upper half of the housing 1. When the electric push rod drives the air pipe 26 to move, the movement of the air pipe 26 causes the annular cover to move and fit onto the upper half of the differential, thereby further increasing the difficulty for dust and debris to enter the interior of the differential, and further improving the molding quality of the differential.

[0080] The implementation principle of the differential press-fitting and welding automated workstation in this application embodiment is as follows:

[0081] When assembling the differential, the housing 1 and the reduction gear 2 are first placed on the annular feeding rail 3. Then, the transfer motor 34 is started, and the motor drives the transfer sprocket 33 and the transfer chain 32 to run, which in turn moves the pallet 351 to the vicinity of the pressing robot 5. Then, the pressing robot takes the reduction gear 2 from the annular feeding rail 3. Then, the pressing robot 5 moves to the alignment table 4 and takes away the aligned housing 1. Then, the pressing robot 5 moves to the pressing table 6 and places the housing 1 and the reduction gear 2 onto the fixture of the pressing table 6 in sequence.

[0082] Then the welding robot 7 moves to the pressing table 6, takes out the pressed differential, moves to the welding table 8, takes out the welded differential, and places the pressed differential. Then the welding robot 7 moves to the grinding table 10, the flipping fixture 18 of the welding robot 7 flips the differential 180 degrees, places the differential on the support plate 24, and takes away the ground differential.

[0083] Then the welding robot 7 returns to the origin and rotates the differential 180 degrees. Then the welding robot 7 moves to the transfer table 9, takes out the welded and polished product, and the pressing robot 5 moves to the circular feeding rail 3, takes out the housing 1 and places the welded and polished differential.

[0084] Subsequently, the press-fitting robot 5 moves to the alignment table 4, places the housing 1, and repeats the above actions to complete the continuous assembly of the differential.

[0085] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A differential press-in welding automation workstation characterized by: The device comprises a ring-shaped feeding track (3), an aligning table (4), a pressing mechanical arm (5), a pressing table (6), a welding mechanical arm (7), a welding table (8), a transfer table (9) and a polishing table (10); The ring-shaped feeding track (3) is used for conveying the shell (1) and the reduction gear (2) to be assembled; The aligning table (4) is used for adjusting the posture of the shell (1); The pressing mechanical arm (5) is provided with a mounting plate (11), a first clamp for clamping the shell (1) and a second clamp for clamping the reduction gear (2), the pressing mechanical arm (5) grabs the shell (1) to the aligning table (4), grabs the shell (1) after the posture is aligned by the aligning table (4), and then transfers the aligned shell (1) and the reduction gear (2) to the pressing table (6); The pressing table (6) is used for pressing the reduction gear (2) to the shell (1); The welding mechanical arm (7) is used for grabbing the product after pressing and transferring it to the welding table (8); the welding table (8) is used for welding the shell (1) and the reduction gear (2); After the shell (1) and the reduction gear (2) are welded, the welding mechanical arm (7) grabs and overturns them and then moves them to the polishing table (10), the polishing table (10) polishes the weld of the shell (1) and the reduction gear (2); The welding mechanical arm (7) grabs the product after polishing and transfers it to the transfer table (9), and then the pressing mechanical arm (5) grabs the product after polishing and transfers it to the ring-shaped feeding track (3); The polishing table (10) is provided with a polishing clamp (19), the polishing clamp (19) comprises a polishing seat (191), the bottom of the polishing seat (191) is provided with an air pipe (26), the air pipe (26) is perpendicular to the bottom surface of the polishing seat (191), the air pipe (26) is slidingly arranged in the polishing seat (191), the air pipe (26) slides in the vertical direction, the air pipe (26) is located on the axis of the polishing seat (191), the polishing seat (191) is provided with an electric push rod for driving the air pipe (26) to slide into the shell (1), and further comprises an air supply part, the air supply part is used for compressing air and then passing the air pipe (26) into the shell (1), the compressed air in the shell (1) is discharged through the mounting hole and the gap of the shell (1) to resist the smoke dust entering the shell (1) during polishing, the bottom of the air pipe (26) is provided with a mounting notch, the mounting notch is used for the mounting shaft of the gear set in the shell (1) to pass through so that the outlet port of the air pipe (26) is close to the through hole at the bottom of the shell (1), and a plurality of air outlets are formed in the peripheral wall of the air pipe (26).

2. An automated differential press weld station as in claim 1, wherein: The annular feeding track (3) comprises a transfer frame (31), a transfer chain (32), a transfer sprocket (33), a transfer motor (34) and a transfer clamp (35), the transfer chain (32), the transfer sprocket (33) and the transfer motor (34) are all arranged on the transfer frame (31), the transfer chain (32) is annular, the connecting shaft of the transfer chain (32) is perpendicular to the ground, the transfer chain (32) is in mesh with the transfer sprocket (33), the transfer motor (34) is used for driving the transfer sprocket (33) to rotate, the transfer clamp (35) is arranged on the transfer chain (32) and is spaced, the transfer clamp (35) comprises a tray (351), a sleeve (352) and a limiting column (353), the tray (351) is fixedly arranged on the transfer chain (32), the sleeve (352) is coaxially arranged on the tray (351), the limiting column (353) is arranged on the tray (351) and is arranged in plurality and is arranged in the circumferential direction of the sleeve (352), the housing (1) end is used for sleeving on the sleeve (352), the reduction gear (2) is received on the limiting column (353) and is sleeved on the housing (1), the annular feeding track (3) further comprises a support, the support is used for supporting the tray (351) so that the tray (351) is in a balanced state.

3. A differential press-fit weld automation station as in claim 2, wherein: The support comprises a first support (36) and a second support (37), the first support (36) is located at the straight section of the transfer chain (32), the second support (37) is located at the arc section of the transfer chain (32), the first support (36) comprises a support plate (361) arranged on the transfer frame (31), the support plate (361) is arranged in two and is located at the two sides of the straight section of the transfer chain (32), the top surface of the support plate (361) is concave and is formed with a support groove, the first support (36) further comprises a plurality of support wheels (362) arranged in the support groove, the second support (37) comprises a plurality of support columns (371) arranged on the transfer frame (31), the support columns (371) are located at the outer side of the transfer chain (32) away from the transfer sprocket (33), the support columns (371) are arranged along the extension direction of the arc section of the transfer chain (32), the second support (37) further comprises support balls (372) which are arranged in rolling on the support columns (371).

4. The differential press-fit weld automation station of claim 1, wherein: The first clamp and the second clamp both comprise a mounting seat (12) and a sliding block (13) arranged in the mounting seat (12), the mounting seat (12) is arranged on the mounting plate (11), the sliding block (13) is arranged in three, the mounting seat (12) is provided with a first driving member for driving the sliding block (13) to slide, the first clamp further comprises a clamping finger (14) arranged on the sliding block (13), and the second clamp further comprises a mounting finger (15) arranged on the sliding block (13).

5. A differential press-fit weld automation station as in claim 4, wherein: The first clamp and the second clamp further comprise a pushing plate (16) arranged in the mounting base (12), the pushing plate (16) is trident-shaped, the pushing plate (16) is parallel to the bottom of the mounting base (12), a pushing rod is arranged in the mounting base (12), and the pushing plate (16) is fixedly arranged on the pushing rod.

6. An automatic differential press-fit welding station according to claim 1, characterized in that: The execution end of the welding manipulator (7) is provided with a connecting plate (17), the connecting plate (17) is provided with a third clamp and a turnover clamp (18), the third clamp is used for clamping the shell (1) after the welding of the reduction gear (2), the turnover clamp (18) comprises a turnover base (181), a turnover motor (182), a clamping jaw (183) and a driving oil cylinder (184), the turnover base (181) is fixedly arranged on the connecting plate (17), the turnover motor (182) is arranged on the turnover base (181), the driving oil cylinder (184) is arranged on the output shaft of the turnover motor (182), and the clamping jaw (183) comprises two clamping blocks and a clamping base, the two clamping blocks are slidingly arranged on the clamping base, and the driving oil cylinder (184) is used for driving the two clamping blocks to approach or deviate from each other.

7. An automatic differential press-fit welding station according to claim 1, characterized in that: The polishing table (10) is further provided with a polishing wheel (20), a polishing motor (21), a lifting piece (22) and a rotating piece (23), the rotating piece (23) is arranged at the execution end of the lifting piece (22), the polishing clamp (19) is arranged on the rotating piece (23), the polishing wheel (20) is arranged on the polishing motor (21), the lifting piece (22) is used for driving the polishing clamp (19) to perform lifting operation on the polishing table (10), and the rotating piece (23) is used for driving the polishing clamp (19) to rotate; the polishing table (10) is provided with a bearing plate (24), the bearing plate (24) is slidingly arranged on the polishing table (10), the differential mechanism after welding is placed on the bearing plate (24) through the welding manipulator (7), then the differential mechanism is placed below the polishing clamp (19) through the sliding of the bearing plate (24) and is clamped by the polishing clamp (19).

8. A differential press-fit weld automation station as in claim 7, wherein: The polishing clamp (19) further comprises a polishing clamp finger (192) and a second driving piece, the polishing base (191) is arranged at the output end of the rotating piece (23), the polishing clamp finger (192) is slidingly arranged in the polishing base (191), the polishing clamp finger (192) is arranged in the polishing base (191) in a trident shape, and the second driving piece is used for driving the polishing clamp finger (192) to slide and clamp the differential mechanism.

9. An automatic differential press-fit welding station according to claim 1, characterized in that: An annular cover is arranged outside the air pipe (26), the annular cover is coaxially arranged on the air pipe (26), the bottom of the annular cover is provided with an opening, the top of the annular cover is provided with an opening and is fixed on the air pipe (26), and the annular cover is sleeved on the upper half of the shell (1) through the electric push rod.

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