Part machining spot welding finishing device and method

Abstract

The embodiment of the invention provides a part machining spot welding finishing device and method, and relates to the technical field of aviation part machining. A spot welding finishing device for part machining comprises a machine shell and a controller integrated inside, a hollowed-out table plate is arranged inside the machine shell, the lower side of the hollowed-out table plate is connected with a scrap hopper, a scrap discharging opening of the scrap hopper extends to the outer side of the machine shell and is sealed through a sealing plate, and a workpiece positioning mechanism used for fixing a workpiece is installed on the upper side of the hollowed-out table plate. A top rail is fixedly arranged on the top of the machine shell, and a finishing mechanism used for polishing the workpiece is slidably installed in the top rail. The controller is in linkage with the transmission mechanism to achieve synchronous movement of the workpiece positioning mechanism and the finishing mechanism, it is guaranteed that grinding positions are accurately aligned, the machining efficiency is improved, meanwhile, when workpieces are assembled and disassembled, grinding wheels are automatically cooled, pressure and fan starting and stopping are adjusted in real time, and the automatic chip removing function is integrated; and the safety, the stability and the maintenance convenience of the equipment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of aviation parts processing, and in particular to a parts processing spot welding finishing device and method thereof. Background Art

[0002] In existing spot welding workpiece finishing equipment, grinding operations are usually performed manually or semi-automatically, which has problems such as low positioning accuracy, cumbersome operation, and poor processing consistency.

[0003] Due to the lack of an effective linkage control mechanism, the movement of the workpiece and the positioning of the grinding head are often not synchronized, resulting in large deviations in the grinding position, affecting the processing quality. At the same time, during long-term continuous operation, the grinding wheel is prone to deformation or wear due to high temperature, shortening its service life, and there is a lack of an effective cooling mechanism to ensure equipment stability.

[0004] In addition, traditional equipment is still near the grinding area when loading and unloading workpieces, which poses certain safety hazards. The equipment also lacks an automatic chip cleaning function. Metal debris can easily accumulate on the workbench surface, causing secondary pollution or affecting subsequent processing accuracy.

[0005] Therefore, there is an urgent need for a spot welding finishing device with a reasonable structure, high degree of automation, synchronous linkage, automatic cooling and chip cleaning functions to improve processing efficiency, ensure processing quality and enhance equipment safety and maintenance convenience. Summary of the Invention

[0006] The present application aims to at least solve the problem of lack of effective linkage control mechanism in the prior art, where the movement of the workpiece and the positioning of the grinding head are often not synchronized, resulting in large deviation in the grinding position, affecting the processing quality. At the same time, during long-term continuous operation, the grinding wheel is prone to deformation or wear due to high temperature, shortening its service life, and lacks an effective cooling mechanism to ensure the stability of the equipment. To this end, the present application proposes a component processing spot welding and finishing device and method thereof.

[0007] To achieve the above-mentioned objectives, on the one hand, the present invention provides a parts processing spot welding and finishing device, comprising a casing and an internally integrated controller, a hollow table plate is provided inside the casing, a chip bucket is connected to the lower side of the hollow table plate, a chip discharge port of the chip bucket extends to the outside of the casing and is sealed by a sealing plate, a workpiece positioning mechanism for fixing the workpiece is installed on the upper side of the hollow table plate, a top rail is fixedly provided on the top of the casing, a finishing mechanism for grinding the workpiece is slidably installed in the top rail, the workpiece positioning mechanism and the finishing mechanism are linked and connected by a transmission mechanism to achieve synchronous movement, and a cooling assembly is also provided on the inner wall of the casing, when the controller controls the operation of the transmission mechanism and the transmission mechanism drives the workpiece positioning mechanism to move outward for loading and unloading the workpiece, the finishing mechanism synchronously moves to one side of the cooling assembly and receives cooling treatment.

[0008] Furthermore, the workpiece positioning mechanism includes a sealing shell fixedly arranged on the hollow table, a through groove is opened on one side of the sealing shell, a base plate is slidably installed in the through groove, a limiting groove 1 is opened on the upper surface of the base plate, a workpiece plate is slidably arranged in the limiting groove 1, and is used to carry the workpiece to be processed.

[0009] Furthermore, cylinder 2 is fixedly installed on both sides of the workpiece plate, the piston end of cylinder 2 is connected to the clamp, and the lower part of the clamp is provided with a protrusion structure that is slidably embedded in the long groove of the workpiece plate. Rotating shafts are respectively rotatably provided on both sides of the clamp, and side plates are fixedly connected to the shaft body of the rotating shaft. The upper end of the rotating shaft is provided with a positioning cap that can be inserted into the upper side of the clamp.

[0010] Furthermore, a screw rod four is rotatably provided on the upper part of the base plate, which is driven by a motor and threadedly connected to the bottom of the workpiece plate for adjusting the lateral position of the workpiece plate. A screw rod three is rotatably provided inside the sealing shell, and both ends of the screw rod three are connected to bevel gear three. The screw rod three is threadedly connected to the bottom of the base plate to realize the forward and backward movement of the base plate.

[0011] Furthermore, the trimming mechanism includes a back plate slidably arranged in the top rail, a cylinder 1 is installed on one side of the back plate, the piston end of the cylinder 1 is connected to the mounting shell, a grinding wheel is rotatably arranged in the mounting shell, the rotating shaft of the grinding wheel is connected to the output shaft of the motor, a screw rod 1 is rotatably arranged in the top rail, the screw rod 1 is threadedly connected to the upper end of the back plate, and one end of the screw rod is connected to the motor for driving the back plate to move along the top rail.

[0012] Furthermore, the cooling assembly includes a fixing plate fixedly mounted on the inner wall of the casing, a cooling fan is mounted on one side of the fixing plate, and the air outlet direction of the cooling fan is toward the grinding wheel for cooling the grinding wheel.

[0013] Furthermore, the transmission mechanism includes a rotating rod rotatably arranged on the rear side of the casing, and the two ends of the rotating rod are respectively fixedly connected to bevel gear 2, wherein the bevel gear 2 located on the upper side is engaged with the bevel gear 1 fixed at the other end of the screw rod 1, and the bevel gear 2 located on the lower side is engaged with the bevel gear 3 connected to one end of the screw rod 3, the middle part of the rotating rod is connected to the screw rod 2, and the screw rod 2 is threadedly connected to a lower pressure head, the rotating rod is sealed by a protective shell fixed on the casing, and a side groove is opened on one side of the protective shell, and the lower pressure head passes through the side groove and extends to the outside.

[0014] Furthermore, two groups of relatively arranged screw rods 5 are rotatably provided at the part near the outer side of the casing, and one end of each screw rod 5 is connected to a bevel gear 4, and the bevel gears 4 on both sides are respectively engaged with the bevel gear 3 at the other end of the screw rod 3. Brushes are slidably installed on both sides of the hollow table, one end of the brush is threadedly connected to the screw rod 5, and the other end is slidably matched with the limit rod inside the casing. A baffle is provided at the part near the outer side of the casing to cover the screw rod 5.

[0015] Furthermore, an adjustment rail is provided on the rear side of the casing, and an adjustment screw is rotatably provided inside the adjustment rail. The adjustment screw is threadedly connected to a movable seat sliding inside the adjustment rail. A pressure sensor is installed inside the movable seat, and the pressure sensor is located directly below the lower pressure head.

[0016] Furthermore, in another aspect, the present invention also provides a method for spot welding and trimming parts processing, comprising any one of the above-mentioned spot welding and trimming parts processing devices, comprising the following steps: S1, the controller controls the motor to drive the screw rod 1 to rotate, so that the back plate is threadedly connected to the screw rod 1 and slides along the top rail, driving the cylinder 1 and the grinding wheel to move synchronously above the dressing area. At the same time, one end of the screw rod 1 is fixedly connected to the bevel gear 1 and meshes with the bevel gear 2 at the upper end of the rotating rod, thereby driving the rotating rod to rotate. When the rotating rod rotates, the screw rod 2 drives the lower pressure head to move upward, so that the lower pressure head is away from the pressure sensor set on the rear side of the casing. After the pressure sensor detects that the pressure signal disappears, it transmits the feedback signal to the controller. The controller judges that the grinding operation is about to start, and controls the cooling fan to turn off to stop cooling the grinding wheel. S2. As the rotating rod rotates, the bevel gear 2 fixed at the lower end of the rotating rod meshes with the bevel gear 3 at the end of the screw rod 3, driving the screw rod 3 to rotate. The screw rod 3 rotates and drives the bottom plate to slide inward along the through groove of the sealing shell through the bottom thread connection. The bottom plate carries the workpiece plate, and the spot welding workpiece to be trimmed is fixed on the workpiece plate. The workpiece plate moves synchronously with the bottom plate to the bottom of the grinding wheel to complete the position alignment before grinding; S3. In S, the bevel gear three at the other end of the screw rod three meshes with the two sets of bevel gears four, driving the screw rod five to rotate. The screw rod five cooperates with the brush thread to drive the two sets of brushes to slide along the limit rod and move back and forth on the surface of the hollow table to remove metal debris dropped during the grinding process.

[0017] The beneficial effects of the present application are as follows: the controller controls the transmission mechanism to link the workpiece positioning mechanism and the dressing mechanism, so that the workpiece is moved to the grinding area and the grinding wheel is simultaneously in place, ensuring accurate alignment of the processing position, avoiding errors caused by manual intervention, and improving processing consistency and efficiency. At the same time, during the workpiece loading and unloading stage, the dressing mechanism automatically moves to the side of the cooling component for cooling treatment, effectively preventing the equipment from overheating due to long-term operation and extending the service life of the grinding wheel. In addition, by moving the workpiece positioning mechanism to the outside of the grinding area to fix the workpiece, safety hazards are reduced. Secondly, a multi-stage bevel gear linkage method is adopted to achieve the coordinated movement of multiple actuators, which has a simple and reliable structure, high transmission efficiency, and easy maintenance. In particular, the rotating rod drives the screw rod 2 to connect to the lower pressure head, and cooperates with the pressure sensor to adjust the opening and closing of the cooling fan, thereby achieving real-time cooling of the dressing mechanism. In addition, the device is also integrated with an automatic chip cleaning function, using the screw rod 5 to drive the brush to slide along the limit rod to periodically clean the surface of the hollow table, preventing the accumulation of metal debris from affecting the subsequent processing accuracy or causing equipment wear, thereby improving overall cleanliness and safety.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure according to an embodiment of the present application; Figure 2 This is the second schematic diagram of the overall structure according to the embodiment of the present application; Figure 3 According to the embodiment of this application Figure 2 Schematic diagram of the structure at A; Figure 4 is a schematic top view of the overall structure according to an embodiment of the present application; Figure 5 is a schematic cross-sectional view of the overall structure according to an embodiment of the present application; Figure 6 is a partial schematic diagram of the overall structure according to an embodiment of the present application; Figure 7 is a schematic structural diagram of a transmission mechanism according to an embodiment of the present application; Figure 8According to the embodiment of this application Figure 7 Schematic diagram of the structure at B; Figure 9 According to the embodiment of this application Figure 7 Schematic diagram of the structure at C; Figure 10 is a schematic diagram of a workpiece positioning mechanism according to an embodiment of the present application; Figure 11 This is a schematic diagram of a workpiece positioning mechanism according to an embodiment of the present application; Figure 12 This is a schematic diagram of the disassembly of the structure of the splint, side panels, etc. according to an embodiment of the present application; Figure 13 is a structural diagram of a trimming mechanism according to an embodiment of the present application; Figure 14 is a schematic structural diagram of a sealed housing according to an embodiment of the present application; Figure 15 Schematic diagram of the protective shell structure according to an embodiment of the present application.

[0021] icon: 1. Casing; 2. Controller; 3. Baffle; 4. Hollow plate; 5. Protective shell; 6. Side groove; 7. Adjustment rail; 8. Moving seat; 9. Pressure sensor; 10. Adjustment screw; 11. Debris bucket; 12. Sealing plate; 13. Top rail; 14. Sealing shell; 15. Through slot; 16. Back plate; 17. Cylinder 1; 18. Mounting shell; 19. Grinding wheel; 20. Fixing plate; 21. Cooling fan; 22. Screw Rod 1; 23. Rotating rod; 24. Screw rod 2; 25. Down pressure head; 26. Bevel gear 1; 27. Bevel gear 2; 28. Bottom plate; 29. ​​Screw rod 3; 30. Bevel gear 3; 31. Limiting groove 1; 32. Screw rod 4; 33. Workpiece plate; 34. Cylinder 2; 35. Clamp; 36. Side plate; 37. Rotating shaft; 38. Positioning cap; 39. Screw rod 5; 40. Brush; 41. Bevel gear 4; 42. Limiting rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0023] A component processing spot welding finishing device and method thereof according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0024] like Figures 1-15As shown, a parts processing spot welding and finishing device according to an embodiment of the present application includes a casing 1, a controller 2 is integrated inside the casing 1, a hollow table plate 4 is provided in the casing 1, a plurality of chip removal holes are opened on the surface of the hollow table plate 4, and a chip bucket 11 is connected to the bottom of the hollow table plate 4 for collecting metal chips generated during the grinding process. The chip removal port of the chip bucket 11 extends to the outside of the casing 1 and is sealed by a sealing plate 12. The sealing plate 12 can be fixed by fixing parts such as latches, which is convenient for opening when removing chips, and is convenient for cleaning and maintenance.

[0025] A workpiece positioning mechanism for fixing the workpiece to be processed is installed on the upper surface of the hollow table 4. The workpiece positioning mechanism includes a sealing shell 14 fixed on the hollow table 4. The sealing shell 14 is located in the middle of the hollow table 4. A through groove 15 is opened on one side of the sealing shell 14. A bottom plate 28 is slidably installed in the through groove 15. The upper surface of the bottom plate 28 is provided with a limit groove 31 arranged in the transverse direction. A workpiece plate 33 is slidably set in the limit groove 31 for carrying the spot-welded workpiece to be polished.

[0026] Cylinder 2 34 is symmetrically installed on both sides of the workpiece plate 33, and its piston end is connected to the clamping plate 35. The lower part of the clamping plate 35 is provided with a protrusion structure embedded in the long groove of the workpiece plate 33 to achieve guide limit. The two sides of the clamping plate 35 are rotatably connected to the side plates 36 through the rotating shaft 37. The upper end of the rotating shaft 37 is provided with a positioning cap 38 that can be inserted into the upper side of the clamping plate 35 to enhance the clamping stability. The lower side of the positioning cap 38 is provided with a plug rod, which can be inserted into the slot on the upper side of the clamping plate 35. When the positioning cap 38 is clamped on the upper end of the rotating shaft 37 and the plug rod is inserted into the slot, the rotating shaft 37 cannot rotate. After removing the positioning cap 38, the rotating shaft 37 can be rotated. According to the shape of the workpiece to be fixed, the two sets of side plates 36 can be rotated to meet the fixation requirements of the workpiece.

[0027] A screw rod 4 32 is rotatably provided on the upper part of the base plate 28, which is driven by a motor and is threadedly connected to the bottom of the workpiece plate 33 for adjusting the lateral position of the workpiece plate 33. A screw rod 3 29 is also rotatably provided inside the sealing shell 14, and its two ends are respectively connected to a bevel gear 3 30, which drives the base plate 28 to move back and forth along the through slot 15 through a threaded connection, thereby realizing the adjustment of the overall position of the workpiece.

[0028] like Figure 6 As shown, a top rail 13 is fixedly provided on the top of the casing 1, and a trimming mechanism is slidably installed in the top rail 13. The trimming mechanism includes a back plate 16 slidably set in the top rail 13, and a cylinder 17 is installed on one side. The piston end of the cylinder 17 is connected to the mounting shell 18, and a grinding wheel 19 is rotatably set inside the mounting shell 18. The rotating shaft of the grinding wheel 19 is connected to the output shaft of the motor. A screw rod 22 is also provided in the top rail 13. The screw rod 22 is threadedly connected to the upper end of the back plate 16. One end of the screw rod 22 is driven by the motor to drive the back plate 16 to move along the top rail 13.

[0029] The cooling assembly is arranged on the inner wall of the casing 1, and specifically includes a fixedly installed fixing plate 20. A cooling fan 21 is provided on one side of the fixing plate 20, and the air outlet direction is facing the grinding wheel 19 for directional cooling thereof. When the controller 2 controls the transmission mechanism to operate and move the workpiece positioning mechanism outward for loading and unloading the workpiece, the dressing mechanism moves synchronously to the side of the cooling assembly and receives cooling treatment.

[0030] like Figure 6 and Figure 7 As shown, the transmission mechanism is arranged on the rear side of the casing 1, including a rotatably installed rotating rod 23, and the two ends of the rotating rod 23 are respectively fixedly connected to the bevel gear 27, wherein the upper bevel gear 27 is engaged with the bevel gear 1 26 fixed at the other end of the screw rod 1 22, and is used to drive the movement of the dressing mechanism, and the lower bevel gear 27 is engaged with the bevel gear 3 30 connected to one end of the screw rod 3 29, and is used to drive the movement of the workpiece positioning mechanism, and the middle part of the rotating rod 23 is connected to the screw rod 24, and the screw rod 24 is threadedly connected to the lower pressure head 25, and the rotating rod 23 is protected by the protective shell 5, and a side groove 6 is provided on one side of the protective shell 5, and the lower pressure head 25 extends to the outside through the side groove 6.

[0031] Two sets of relatively arranged screw rods 5 39 are rotatably provided near the outer side of the casing 1. One end of each screw rod 5 39 is connected to a bevel gear 41. The two bevel gears 41 are respectively engaged with the bevel gear 30 at the other end of the screw rod 3 29. Brushes 40 are slidably installed on both sides of the hollow table 4. One end of the brush 40 is threadedly connected to the screw rod 5 39, and the other end is slidably matched with the limit rod 42 to realize the automatic chip cleaning function. At the same time, a baffle 3 is provided near the outer side of the casing 1 to cover the screw rod 5 39 and its transmission components, thereby improving the overall aesthetics and safety of the equipment.

[0032] In addition, an adjustment rail 7 is provided on the rear side of the casing 1, and an adjustment screw 10 is rotatably arranged in the adjustment rail 7. The adjustment screw 10 is threadedly connected to a movable seat 8 slidably installed in the adjustment rail 7. A pressure sensor 9 is provided inside the movable seat 8, which is located directly below the lower pressure head 25. When the lower pressure head 25 is threadedly connected to the screw 24 as the rotating rod 23 rotates, and moves downward and presses the pressure sensor 9, the pressure sensor 9 feeds back a signal to the controller 2, and the controller 2 controls the cooling fan 21 to turn on. When the lower pressure head 25 is away from the pressure sensor 9, the controller 2 controls the cooling fan 21 to turn off.

[0033] That is, the workpiece positioning mechanism and the trimming mechanism are linked by a transmission mechanism to achieve synchronous movement. When the controller 2 controls the operation of the transmission mechanism and the transmission mechanism drives the workpiece positioning mechanism to move outward for workpiece loading and unloading, the trimming mechanism moves synchronously to one side of the cooling component and receives cooling treatment.

[0034] On the other hand, the present invention also provides a method for preparing a component processing spot welding and finishing device, comprising the following steps: S1, controller 2 controls the motor to drive screw rod 1 22 to rotate, so that the back plate 16 is threadedly connected to screw rod 1 22 and slides along the top rail 13, driving cylinder 17 and grinding wheel 19 to move synchronously above the trimming area. At the same time, one end of screw rod 1 22 is fixedly connected to bevel gear 1 26 and meshes with bevel gear 2 27 at the upper end of rotating rod 23, thereby driving rotating rod 23 to rotate. When rotating rod 23 rotates, screw rod 2 24 drives the lower pressure head 25 to move upward, so that the lower pressure head 25 is away from the pressure sensor 9 arranged on the rear side of the casing 1. After the pressure sensor 9 detects that the pressure signal disappears, it transmits the feedback signal to the controller 2. Based on this, the controller 2 determines that the grinding operation is about to start, and controls the cooling fan 21 to turn off, and stops cooling the grinding wheel 19. S2. As the rotating rod 23 rotates, the bevel gear 27 fixed at the lower end of the rotating rod 23 meshes with the bevel gear 30 at one end of the screw rod 3 29, driving the screw rod 3 29 to rotate. The screw rod 3 29 rotates and drives the bottom plate 28 to slide inward along the through slot 15 of the sealing shell 14 through the bottom thread connection. The bottom plate 28 carries a workpiece plate 33, on which the spot welding workpiece to be trimmed is fixed. The workpiece plate 33 moves synchronously with the bottom plate 28 to the position directly below the grinding wheel 19, completing the position alignment before grinding; S3. In S2, the bevel gear three 30 at the other end of the screw rod three 29 is engaged with the two sets of bevel gears four 41, driving the screw rod five 39 to rotate. The screw rod five 39 is threadedly matched with the brush 40, driving the two sets of brushes 40 to slide along the limit rod 42, moving back and forth on the surface of the hollow table 4 to remove metal debris dropped during the grinding process.

[0035] In summary, the workpiece to be spot-welded is placed on the surface of the workpiece plate 33 on the hollow table 4, and the cylinder 2 34 is started. Its piston end pushes the clamping plate 35 to move and fix the workpiece, and the guide limit is achieved by the convex structure embedded in the long groove of the workpiece plate 33. The motor drives the screw rod 1 22 to rotate, so that the back plate 16 slides along the top rail 13 to the set position. At this time, the bevel gear 2 27 at the upper end of the rotating rod 23 is engaged with the bevel gear 1 26, and the bevel gear 2 27 fixed at the lower end of the rotating rod 23 is engaged with the bevel gear 3 30 at one end of the screw rod 3 29, driving the screw rod 3 29 to rotate. The screw rod 3 29 rotates and drives the bottom plate 28 to slide inward along the through groove 15 of the sealing shell 14 through the bottom threaded connection, so that the workpiece is moved to the trimming area. At this time, the cylinder 17 pushes the mounting shell 1 8 descends, so that the grinding wheel 19 contacts the surface of the workpiece, and when the rotating rod 23 rotates, the screw rod 24 drives the lower pressure head 25 to move upward, so that the lower pressure head 25 is away from the pressure sensor 9 arranged on the rear side of the casing 1. After the pressure sensor 9 detects that the pressure signal disappears, it transmits the feedback signal to the controller 2. The controller 2 controls the cooling fan 21 to turn off and stop cooling the grinding wheel 19. At the same time, the bevel gear 30 at the other end of the screw rod 3 29 is engaged with the two sets of bevel gears 41, driving the screw rod 5 39 to rotate. The screw rod 5 39 is threadedly matched with the brush 40, driving the two sets of brushes 40 to slide along the limit rod 42, and move back and forth on the surface of the hollow table 4 to remove metal debris dropped during the grinding process. The metal debris enters the debris bucket 11 for storage.

[0036] The above are merely examples of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may be subject to various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0037] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A spot welding and finishing device for parts processing, comprising a housing (1) and an internally integrated controller (2), characterized in that: The casing (1) is provided with a hollow table (4) inside, and a chip bucket (11) is connected to the lower side of the hollow table (4). The chip discharge port of the chip bucket (11) extends to the outside of the casing (1) and is sealed by a sealing plate (12). A workpiece positioning mechanism for fixing the workpiece is installed on the upper side of the hollow table (4). A top rail (13) is fixedly provided on the top of the casing (1), and a finishing mechanism for grinding the workpiece is slidably installed in the top rail (13). The workpiece positioning mechanism and the finishing mechanism are linked and connected by a transmission mechanism to achieve synchronous movement. A cooling component is also provided on the inner wall of the casing (1). When the controller (2) controls the operation of the transmission mechanism and the transmission mechanism drives the workpiece positioning mechanism to move outward for loading and unloading the workpiece, the finishing mechanism moves synchronously to one side of the cooling component and receives cooling treatment.

2. The spot welding and finishing device for parts processing according to claim 1, characterized in that: The workpiece positioning mechanism comprises a sealing shell (14) fixedly arranged on a hollow table (4), a through slot (15) being provided on one side of the sealing shell (14), a bottom plate (28) being slidably mounted in the through slot (15), a limiting slot (31) being provided on the upper surface of the bottom plate (28), a workpiece plate (33) being slidably mounted in the limiting slot (31) for carrying a workpiece to be processed.

3. The spot welding and finishing device for parts processing according to claim 2, characterized in that: Cylinder 2 (34) is fixedly installed on both sides of the workpiece plate (33), and the piston end of cylinder 2 (34) is connected to the clamping plate (35). The lower part of the clamping plate (35) is provided with a protrusion structure that is slidably embedded in the long groove of the workpiece plate (33). Rotating shafts (37) are rotatably provided on both sides of the clamping plate (35). The shaft body of the rotating shaft (37) is fixedly connected to a side plate (36). The upper end of the rotating shaft (37) is provided with a positioning cap (38) that can be plugged into the upper side of the clamping plate (35).

4. The spot welding and finishing device for parts processing according to claim 3, characterized in that: The upper portion of the base plate (28) is rotatably provided with a screw rod four (32), which is driven by a motor and is threadedly connected to the bottom of the workpiece plate (33) for adjusting the lateral position of the workpiece plate (33). The sealing shell (14) is internally provided with a screw rod three (29), both ends of which are connected to a bevel gear three (30). The screw rod three (29) is threadedly connected to the bottom of the base plate (28) to achieve forward and backward movement of the base plate (28).

5. The spot welding and finishing device for parts processing according to claim 4, characterized in that: The trimming mechanism includes a back plate (16) slidably arranged in the top rail (13), a cylinder (17) is installed on one side of the back plate (16), a piston end of the cylinder (17) is connected to a mounting shell (18), a grinding wheel (19) is rotatably arranged in the mounting shell (18), a rotating shaft of the grinding wheel (19) is connected to the output shaft of the motor, a screw rod (22) is rotatably arranged in the top rail (13), the screw rod (22) is threadedly connected to the upper end of the back plate (16), and one end of the screw rod (22) is connected to the motor for driving the back plate (16) to move along the top rail (13).

6. The spot welding and finishing device for parts processing according to claim 1, characterized in that: The cooling assembly comprises a fixing plate (20) fixedly mounted on the inner wall of the housing (1), a cooling fan (21) being mounted on one side of the fixing plate (20), and an air outlet direction of the cooling fan (21) being directed toward the grinding wheel (19) for cooling the grinding wheel.

7. The spot welding and finishing device for parts processing according to claim 6, characterized in that: The transmission mechanism includes a rotating rod (23) rotatably arranged on the rear side of the housing (1), and the two ends of the rotating rod (23) are respectively fixedly connected to bevel gear 2 (27), wherein the bevel gear 2 (27) located on the upper side is meshed with bevel gear 1 (26) fixed to the other end of the screw rod 1 (22), and the bevel gear 2 (27) located on the lower side is meshed with bevel gear 3 (30) connected to one end of the screw rod 3 (29), the middle part of the rotating rod (23) is connected to screw rod 2 (24), and the upper thread of screw rod 2 (24) is connected to a lower pressure head (25), and the rotating rod (23) is sealed by a protective shell (5) fixed to the housing (1), and a side groove (6) is opened on one side of the protective shell (5), and the lower pressure head (25) passes through the side groove (6) and extends to the outside.

8. The spot welding and finishing device for parts processing according to claim 7, characterized in that: The housing (1) is provided with two sets of relatively arranged screw rods (39) at a portion near the outside. One end of each screw rod (39) is connected to a bevel gear (41). The bevel gears (41) on both sides are respectively engaged with the bevel gear (30) at the other end of the screw rod (29). Brushes (40) are respectively slidably installed on both sides of the hollow table (4). One end of the brush (40) is threadedly connected to the screw rod (39), and the other end is slidably matched with the limit rod (42) inside the housing (1). A baffle (3) is provided at a portion near the outside of the housing (1) for shielding the screw rod (39).

9. The spot welding and finishing device for parts processing according to claim 8, characterized in that: An adjustment rail (7) is provided on the rear side of the housing (1), an adjustment screw (10) is rotatably provided inside the adjustment rail (7), the adjustment screw (10) is threadedly connected to a movable seat (8) sliding inside the adjustment rail (7), a pressure sensor (9) is installed inside the movable seat (8), and the pressure sensor (9) is located directly below the lower pressure head (25).

10. A method for spot welding and finishing of parts processing, comprising the device for spot welding and finishing of parts processing according to any one of claims 1 to 9, characterized in that: The steps include: S1, the controller (2) controls the motor to drive the screw rod 1 (22) to rotate, so that the back plate (16) is threadedly connected to the screw rod 1 (22) and slides along the top rail (13), driving the cylinder 1 (17) and the grinding wheel (19) to move synchronously to the top of the trimming area. At the same time, one end of the screw rod 1 (22) is fixedly connected to the bevel gear 1 (26) and meshes with the bevel gear 2 (27) at the upper end of the rotating rod (23), thereby driving the rotating rod (23) to rotate. When the rotating rod (23) rotates, the screw rod 2 (24) drives the lower pressure head (25) to move upward, so that the lower pressure head (25) is away from the pressure sensor (9) arranged on the rear side of the housing (1). After the pressure sensor (9) detects that the pressure signal disappears, it transmits the feedback signal to the controller (2). The controller (2) judges that the grinding operation is about to start and controls the cooling fan (21) to turn off to stop cooling the grinding wheel (19); S2. When the rotating rod (23) rotates, the bevel gear 2 (27) fixed at the lower end of the rotating rod (23) meshes with the bevel gear 3 (30) at one end of the screw rod 3 (29), driving the screw rod 3 (29) to rotate. The screw rod 3 (29) rotates and drives the bottom plate (28) to slide inward along the through groove (15) of the sealing shell (14) through the bottom thread connection. The bottom plate (28) carries a workpiece plate (33). The workpiece plate (33) is fixed with the spot welding workpiece to be trimmed. It moves synchronously with the bottom plate (28) to the bottom of the grinding wheel (19) to complete the position alignment before grinding; S3. In S2, the bevel gear three (30) at the other end of the screw rod three (29) is meshed with the two sets of bevel gear four (41), driving the screw rod five (39) to rotate. The screw rod five (39) is threadedly engaged with the brush (40), driving the two sets of brushes (40) to slide along the limit rod (42) and move back and forth on the surface of the hollow table (4) to remove metal debris dropped during the grinding process.

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