Automobile metal plate polishing and positioning tool

Abstract

The utility model discloses an automobile metal plate polishing and positioning tool which comprises a working table, a hoisting mechanism is movably arranged on one side of the surface of the working table, a polishing mechanism is arranged on the side, away from the hoisting mechanism, of the upper surface of the working table, and a positioning mechanism is further arranged on the working table. The positioning mechanism comprises a plurality of first sliding rails, a plurality of second sliding rails, a plurality of first annular sliding rails and a plurality of second annular sliding rails which are communicated with one another, a plurality of positioning clamps are further arranged on the sliding rails in a sliding mode and can be well suitable for some automobile metal plates irregular in the circumferential direction, one side face of each clamping block is designed to be of a concave arc face, and a mounting groove is further formed in the center of the side face. And a rectangular clamping block is movably arranged in the mounting groove, so that the equipment can clamp and fix the automobile metal plates in different shapes, the application range is wide, the hoisting mechanism is arranged, manpower is replaced for carrying the automobile metal plates with large sizes or heavy weights, manpower is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile sheet metal fixing, and in particular relates to an automobile sheet metal grinding and positioning tool. Background Art

[0002] Automotive sheet metal is a processing method for automobile maintenance, also known as cold working. In this respect, automotive sheet metal is equal to automotive sheet metal repair. When repairing automotive sheet metal, grinding tools are needed to grind the automotive sheet metal. When grinding, the automotive sheet metal needs to be fixed first, but when fixing the automotive sheet metal, most of the jigs fix the automotive sheet metal from the top or both sides. When personnel are grinding, because the jig is fixed on the surface of the automotive sheet metal, the surface of the automotive sheet metal cannot be completely polished, and most of the automotive sheet metals are irregular shapes. When fixed, the automotive sheet metal cannot be accurately fixed due to some angle problems. Utility Model Content

[0003] In order to overcome the problem that the current automobile sheet metal is usually fixed from the top or both sides during fixing and grinding, which makes it impossible to completely grind the surface of the automobile sheet metal, and the automobile sheet metal is usually irregular in shape and there is a large difference in size, so there is a problem that it cannot be accurately fixed during fixing, the utility model provides an automobile sheet metal grinding and positioning tooling, the purpose of which is to meet the accurate fixation of automobile sheet metals of different shapes and sizes and improve the accuracy of automobile sheet metal grinding.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An automobile sheet metal grinding and positioning tool comprises a workbench, a plurality of supporting base plates are arranged at the bottom end of the workbench, a lifting mechanism is movably arranged on one side of the surface of the workbench, and a grinding mechanism is arranged on the side of the upper surface of the workbench away from the lifting mechanism, a positioning mechanism is also arranged on the workbench, a plurality of positioning fixtures are slidably arranged on the positioning mechanism, and the positioning mechanism is located on the side of the grinding mechanism close to the lifting mechanism;

[0006] The positioning mechanism includes a plurality of first slide rails arranged in parallel with each other, a plurality of second slide rails arranged in parallel with each other, a plurality of first annular slide rails and a plurality of second annular slide rails, wherein the plurality of first slide rails are arranged in the workbench and are evenly arranged and distributed along the X direction of the workbench, the plurality of second slide rails are also arranged in the workbench and are evenly arranged and distributed along the Y direction of the workbench, the first annular slide rail is arranged between the first slide rail and the second slide rail, the second annular slide rail is also arranged between the first slide rail and the second slide rail, and the plurality of first annular slide rails and the plurality of second annular slide rails are coaxially arranged.

[0007] Furthermore, the positioning fixture includes a first electric slider, and the first electric sliders are slidably installed on a plurality of the first slide rails, a plurality of the second slide rails, a plurality of the first annular slide rails and a plurality of the second annular slide rails, a mounting plate is provided at the top of the first electric slider, a first electric rotating rod is provided at the top of the mounting plate, and a clamping assembly is detachably provided at the top of the first electric rotating rod, and the clamping assembly includes a sliding base plate, a driving block is provided on one side of the top of the sliding base plate, a clamping block is movably provided on a side wall of the driving block close to the sliding base plate, a side surface of the clamping block away from the driving block is designed as a concave arc surface, and a mounting groove is also provided at the center of a side surface of the clamping block away from the driving block, and a rectangular clamping block is movably provided in the mounting groove, a mounting hole is provided at the top of the first electric rotating rod along the central axis, and a mounting rod is provided at the bottom end of the sliding base plate to be snap-fitted with the mounting hole.

[0008] Furthermore, a plurality of first telescopic rods are arranged in the driving block, the plurality of first telescopic rods are passed through the side wall of the driving block close to the clamping block and are connected to the clamping block, and limiting grooves are provided on both sides of the top of the sliding base plate, and a limiting block is provided at the bottom of the clamping block which is slidably adapted to the limiting grooves.

[0009] Furthermore, a plurality of second telescopic rods are provided between a side of the rectangular clamping block close to the installation slot and a side wall opposite to the installation slot, and a pressure sensor is provided on a side surface of the rectangular clamping block away from the second telescopic rods.

[0010] Furthermore, movable slide rails are provided on both sides of the top of the workbench, and two second electric slide blocks are slidably adapted in the two movable slide rails, and a hoisting mechanism is provided above the second electric slide blocks.

[0011] Furthermore, the lifting mechanism includes a third telescopic rod arranged at the top of the second electric slider, and a top plate is fixedly provided on the top of the four third telescopic rods, a plurality of cross bars are evenly arranged at the bottom end of the top plate, a plurality of rings are sleeved on the cross bars, bolts are passed through the top of the rings, a connecting rod is fixedly connected to the bottom end of the rings, and a suction cup is also provided at the bottom end of the connecting rod.

[0012] Furthermore, the grinding mechanism includes a mounting seat, which is fixedly arranged on the surface of one side of the top of the workbench, and a second electric rotating rod is arranged on the top of the mounting seat, and a fourth telescopic rod is arranged on the top of the second electric rotating rod, and a mechanical arm is arranged on the top of the fourth telescopic rod, and a grinding disc is detachably connected to the end of the mechanical arm away from the fourth telescopic rod.

[0013] Beneficial effects of the utility model:

[0014] (1) A plurality of first slide rails, a second slide rail, a first annular slide rail and a second annular slide rail are arranged on the workbench, and the plurality of first slide rails, a plurality of second slide rails are connected to the first annular slide rail and the second annular slide rail, and a plurality of positioning clamps are slidably arranged on the slide rails, and the positioning clamps are detachably designed, and a clamping assembly is detachably arranged on the first electric rotating rod, so that the staff can adaptively select and install the clamping assembly according to the size and shape of the automobile sheet metal to be clamped, and can be well applied to some automobile sheet metals with irregular circumferences. At the same time, one side of the clamp block is designed with a concave arc surface and a mounting groove is also provided in the center of the side surface, and a rectangular clamp block is movably arranged in the mounting groove. The arc surface design of the clamp block can well adapt to some automobile sheet metals with curved surfaces or curvatures, and the rectangular clamp block ensures that the straight edges of some automobile sheet metals can also be stably clamped, so that the equipment can meet the clamping and fixing of automobile sheet metals of different shapes, and has a wide range of applications;

[0015] (2) A pressure sensor is provided on one side of the rectangular clamping block away from the second telescopic rod, and the signal output end of the pressure sensor is connected to the signal input end of the first telescopic rod on the same body as the second telescopic rod. The first telescopic rod continuously drives the clamping block to move in the direction of the automobile sheet metal until the pressure value sensed by the pressure sensor reaches a preset value, and then the first telescopic rod is controlled to stop driving, thereby ensuring the clamping force and preventing the clamp from causing excessive extrusion of the automobile sheet metal.

[0016] (3) By setting up a lifting mechanism, it replaces the manual labor to carry large or heavy automobile sheet metal, saving manpower and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of a positioning fixture in the utility model in one state;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of another state of the positioning fixture in the utility model;

[0021] Figure 4 It is a side sectional view of the positioning fixture in the utility model;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the lifting mechanism in the utility model;

[0023] Figure 6 for Figure 5 A partial enlarged view of .

[0024] In the figure: 1, workbench; 11, supporting base plate; 12, moving slide rail; 13, second slide rail; 14, first slide rail; 15, first annular slide rail; 16, second annular slide rail; 2, grinding mechanism; 21, mounting seat; 22, second electric rotating rod; 23, fourth telescopic rod; 24, mechanical arm; 25, grinding disc; 3, lifting mechanism; 31, second electric sliding block; 32, third telescopic rod; 33, top plate; 34, cross bar; 341, ring; 342. Connecting rod; 343. Suction cup; 344. Bolt; 4. Positioning fixture; 41. First electric slider; 43. Mounting plate; 44. First electric rotating rod; 440. Mounting hole; 45. Driving block; 451. First telescopic rod; 46. Sliding bottom plate; 460. Mounting rod; 461. Limiting groove; 47. Clamping block; 471. Mounting groove; 472. Rectangular clamping block; 473. Second telescopic rod; 474. Limiting block; 5. Pressure sensor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 As shown, the utility model is a kind of automobile sheet metal grinding and positioning tool, including a workbench 1, a plurality of supporting base plates 11 are arranged at the bottom end of the workbench 1, a lifting mechanism 3 is movably arranged on one side of the surface of the workbench 1, and a grinding mechanism 2 is arranged on the side of the upper surface of the workbench 1 away from the lifting mechanism 3, a positioning mechanism is also arranged on the workbench 1, and a plurality of positioning fixtures 4 are slidably arranged on the positioning mechanism, and the positioning mechanism is located on the side of the grinding mechanism 2 close to the lifting mechanism 3;

[0027] Specifically, the positioning mechanism includes a plurality of first slide rails 14 arranged in parallel with each other, a plurality of second slide rails 13 arranged in parallel with each other, a plurality of first annular slide rails 15 and a plurality of second annular slide rails 16, the plurality of first slide rails 14 are arranged in the workbench 1 and are evenly arranged and distributed along the X direction of the workbench 1, the plurality of second slide rails 13 are also arranged in the workbench 1 and are evenly arranged and distributed along the Y direction of the workbench 1, the first annular slide rail 15 is arranged between the first slide rail 14 and the second slide rail 13, the second annular slide rail 16 is also arranged between the first slide rail 14 and the second slide rail 13, and the plurality of first annular slide rails 15 and the plurality of second annular slide rails 16 are coaxially arranged;

[0028] The positioning fixture 4 includes a first electric slider 41, and the first electric sliders 41 are slidably installed on a plurality of first slide rails 14, a plurality of second slide rails 13, a plurality of first annular slide rails 15, and a plurality of second annular slide rails 16. A mounting plate 43 is provided at the top of the first electric slider 41, and a first electric rotating rod 44 is provided at the top of the mounting plate 43. A clamping assembly is detachably provided at the top of the first electric rotating rod 44, and the clamping assembly includes a sliding bottom plate 46, and a driving block 45 is provided at one side of the top of the sliding bottom plate 46. A clamping block 47 is movably provided on a side wall of the driving block 45 close to the sliding bottom plate 46, and a plurality of first electric rotating rods 44 are provided in the driving block 45. A telescopic rod 451, a plurality of first telescopic rods 451 are penetrated through the side wall of the driving block 45 near the clamping block 47 and connected to the clamping block 47, and limiting grooves 461 are provided on both sides of the top of the sliding bottom plate 46, and a limiting block 474 is provided at the bottom of the clamping block 47 to slide and fit with the limiting groove 461, wherein a mounting hole 440 is provided at the top of the first electric rotating rod 44 along the central axis, and a mounting rod 460 is provided at the bottom of the sliding bottom plate 46 to snap fit with the mounting hole 440, so that the staff can adaptably select and install the clamping assembly according to the size and shape of the automobile sheet metal to be clamped, and can be well applied to some surrounding To the irregular automobile sheet metal, and in order to ensure that the components of the clamping assembly can operate normally after installation, the mounting hole 440 is specifically a conductive groove, and the mounting rod 460 is specifically a conductive joint. Again, in order to enable the clamping block 47 to meet the clamping and fixing of automobile sheet metals of different shapes, the side of the clamping block 47 away from the driving block 45 is designed to be a concave arc surface, which can well adapt to some automobile sheet metals with curved surfaces or curvatures. In addition, in order to ensure that the straight edges of some automobile sheet metals can also be stably clamped, a mounting groove 471 is further provided in the center of the side of the clamping block 47 away from the driving block 45, and the mounting groove 47 1 is movably provided with a rectangular clamping block 472. Specifically, a plurality of second telescopic rods 473 are provided between a side of the rectangular clamping block 472 close to the mounting groove 471 and a side wall opposite to the mounting groove 471. When one side of the automobile sheet metal is in a regular shape such as a regular rectangular surface, there will be a gap between the arc surface and the automobile sheet metal and it is impossible to provide a very stable clamping force. At this time, the second telescopic rod 473 is driven to extend so that the rectangular clamping block 472 extends out of the mounting groove 471, thereby making the rectangular clamping block 472 protrude, and the clamping surface is changed into a rectangular surface, so as to ensure that the clamping surface can be closely fitted with the automobile sheet metal and ensure the stability of the clamping;

[0029] In order to further determine the clamping force of the clamp block 47 or the rectangular clamp block 472 on the automobile sheet metal, a pressure sensor 5 is also provided on a side surface of the rectangular clamp block 472 away from the second telescopic rod 473, and the signal output end of the pressure sensor 5 is connected to the signal input end of the first telescopic rod 451 on the same body as the clamp block 47. The first telescopic rod 451 continuously drives the clamp block 47 to move in the direction of the automobile sheet metal until the pressure value sensed by the pressure sensor 5 reaches a preset value, and then controls the first telescopic rod 451 to stop driving, which not only ensures the clamping force but also avoids excessive extrusion of the automobile sheet metal by the clamp 47.

[0030] The first electric rotating rod 44 is provided so that the clamp block 47 can be adaptively adjusted in direction according to the shape of the automobile sheet metal to be clamped, thereby accurately fixing the automobile sheet metal;

[0031] Both sides of the top of the workbench 1 are provided with movable slide rails 12, and two second electric sliders 31 are slidably adapted in the two movable slide rails 12. A hoisting mechanism 3 is provided above the second electric slider 31. Specifically, the hoisting mechanism 3 includes a third telescopic rod 32 arranged at the top of the second electric slider 31, and a top plate 33 is fixedly provided at the top of the four third telescopic rods 32. A plurality of cross bars 34 are evenly arranged at the bottom of the top plate 33. A plurality of circular rings 341 are sleeved on the plurality of cross bars 34. The inner surface of the circular ring 341 is circumferentially abutted against the cross bar 34. A bolt 344 is passed through the top of the circular ring 341, and the circular ring 341 is threadably adapted to the bolt 344. A connecting rod 342 is fixedly connected to the bottom of the circular ring 341, and a suction cup 343 is also provided at the bottom of the connecting rod 342.

[0032] The hoisting mechanism 3 is provided to help the staff to transfer the automobile sheet metal that needs to be polished to the positioning mechanism. Since there are some automobile sheet metals that are large in volume or heavy in weight, a large amount of manpower is needed to lift the automobile sheet metal to the positioning tooling for fixing, which is a very laborious process. The automobile sheet metal is first lifted by the hoisting mechanism 3, and the second electric slider 31 slides on the moving slide rail 12 to drive the automobile sheet metal to move above the positioning mechanism. Compared with the traditional lifting, it saves manpower and improves work efficiency.

[0033] At the same time, the grinding mechanism 2 includes a mounting seat 21, which is fixedly arranged on a surface on one side of the top of the workbench 1, and a second electric rotating rod 22 is arranged on the top of the mounting seat 21, and a fourth telescopic rod 23 is arranged on the top of the second electric rotating rod 22, and a mechanical arm 24 is arranged on the top of the fourth telescopic rod 23, and a grinding disc 25 is detachably connected to the end of the mechanical arm 24 away from the fourth telescopic rod 23, and the arrangement of the second electric rotating rod 22 enables the direction of the mechanical arm 24 to be flexibly adjusted;

[0034] The working principle of this utility model:

[0035] First, place the automobile sheet metal that needs to be polished on one side of the workbench 1, then move the lifting mechanism 3 so that it is directly above the automobile sheet metal, then select the number of suction cups 343 to be used as needed, drive the third telescopic rod 32 to shorten so that the position of the suction cup 343 is lowered, so that the staff can fix the suction cup on the surface of the automobile sheet metal, and then tighten the bolt 344 at the top of the ring 341 after fixing it, so that the bottom end of the bolt 344 is in contact with the cross bar 34, so that the ring 341 will not slide easily on the cross bar 34, thereby preventing shaking during the movement of the automobile sheet metal. After the fixation is completed, the third telescopic rod 32 is driven to extend to lift the automobile sheet metal, and then the second electric slider 31 is driven to slide on the movable slide rail 12 to drive the automobile sheet metal to move above the positioning mechanism. At this time, a positioning fixture 4 is controlled to slide to the bottom of one side of the automobile sheet metal, and then the third telescopic rod 32 is driven to slowly descend until the bottom end of one side of the automobile sheet metal is against the end surface of the sliding bottom plate 46 on the positioning fixture 4. At this time, according to the volume and weight of the automobile sheet metal, the number of positioning fixtures 4 to be used is selected, and then several positioning fixtures 4 are driven to slide to the most suitable The corresponding slide rail position makes it possible for the sliding bottom plate 46 on each positioning fixture 4 to abut against the bottom end of the automobile sheet metal. After determining the positions of several positioning fixtures 4, according to the position shape of the positioning fixture 4 corresponding to the automobile sheet metal, it is selected whether to extend the rectangular clamping block 472. After adjustment, the first telescopic rod 451 on each positioning fixture 4 is driven respectively to drive the clamping block 47 or the rectangular clamping block 472 to clamp the automobile sheet metal to ensure that the clamping surface can fit tightly with the automobile sheet metal. Until the pressure value sensed by the pressure sensor 5 reaches the preset value, the first telescopic rod 451 is controlled to extend to the automobile sheet metal. Rod 451 stops driving, wherein the sliding base plate 46 provides a certain supporting force for the automobile sheet metal, and the clamp block 47 or the rectangular clamp block 472 clamps the side of the automobile sheet metal, so that the upper surface of the automobile sheet metal is completely exposed without any obstruction, which is more convenient for subsequent grinding work. After the clamping is completed, the suction cup 343 on the surface of the automobile sheet metal is released, and the lifting mechanism 3 is moved aside. Finally, by controlling the rotation of the second electric rotating rod 22 and the height adjustment of the fourth telescopic rod 23, and controlling the movement of the mechanical arm 24, the grinding disc 23 evenly grinds the surface of the automobile sheet metal.

[0036] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, as well as a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A tool for positioning and polishing automobile sheet metal, comprising a workbench (1), wherein a plurality of supporting base plates (11) are provided at the bottom end of the workbench (1), characterized in that: A lifting mechanism (3) is movably provided on one side of the surface of the workbench (1), and a grinding mechanism (2) is provided on the side of the upper surface of the workbench (1) away from the lifting mechanism (3). A positioning mechanism is also provided on the workbench (1), and a plurality of positioning fixtures (4) are slidably provided on the positioning mechanism. The positioning mechanism is located on the side of the grinding mechanism (2) close to the lifting mechanism (3); The positioning mechanism comprises a plurality of first slide rails (14) arranged in parallel with each other, a plurality of second slide rails (13) arranged in parallel with each other, a plurality of first annular slide rails (15) and a plurality of second annular slide rails (16); the plurality of first slide rails (14) are arranged in the workbench (1) and are evenly arranged and distributed along the X direction of the workbench (1); the plurality of second slide rails (13) are also arranged in the workbench (1) and are evenly arranged and distributed along the Y direction of the workbench (1); the first annular slide rail (15) is arranged between the first slide rail (14) and the second slide rail (13); the second annular slide rail (16) is also arranged between the first slide rail (14) and the second slide rail (13); and the plurality of first annular slide rails (15) and the plurality of second annular slide rails (16) are coaxially arranged.

2. The automobile sheet metal grinding and positioning tool according to claim 1 is characterized in that: The positioning fixture (4) comprises a first electric slider (41), and the first electric sliders (41) are slidably mounted on a plurality of the first slide rails (14), a plurality of the second slide rails (13), a plurality of the first annular slide rails (15) and a plurality of the second annular slide rails (16). A mounting plate (43) is provided at the top end of the first electric slider (41), and a first electric rotating rod (44) is provided at the top end of the mounting plate (43). A clamping assembly is detachably provided at the top end of the first electric rotating rod (44), and the clamping assembly comprises a sliding bottom plate (46), and a driving block ( 45), a clamping block (47) is movably provided on a side wall of the driving block (45) close to the sliding bottom plate (46), a side surface of the clamping block (47) away from the driving block (45) is designed as a concave arc surface, and a mounting groove (471) is also provided at the center of a side surface of the clamping block (47) away from the driving block (45), a rectangular clamping block (472) is movably provided in the mounting groove (471), a mounting hole (440) is provided at the top end of the first electric rotating rod (44) along the central axis, and a mounting rod (460) is provided at the bottom end of the sliding bottom plate (46) to be snap-fitted with the mounting hole (440).

3. The automobile sheet metal grinding and positioning tool according to claim 2 is characterized in that: A plurality of first telescopic rods (451) are arranged in the driving block (45), and the plurality of first telescopic rods (451) are passed through the side wall of the driving block (45) close to the clamping block (47) and connected to the clamping block (47). Limiting grooves (461) are provided on both sides of the top of the sliding bottom plate (46), and a limiting block (474) slidably adapted to the limiting groove (461) is provided at the bottom of the clamping block (47).

4. The automobile sheet metal grinding and positioning tool according to claim 3 is characterized in that: A plurality of second telescopic rods (473) are provided between a side of the rectangular clamping block (472) close to the mounting groove (471) and a side wall opposite to the mounting groove (471), and a pressure sensor (5) is provided on a side surface of the rectangular clamping block (472) away from the second telescopic rods (473).

5. The automobile sheet metal grinding and positioning tool according to claim 1, characterized in that: Both sides of the top of the workbench (1) are provided with movable slide rails (12), and two second electric slide blocks (31) are slidably adapted in the two movable slide rails (12), and a hoisting mechanism (3) is provided above the second electric slide blocks (31).

6. The automobile sheet metal grinding and positioning tool according to claim 5, characterized in that: The hoisting mechanism (3) comprises a third telescopic rod (32) arranged at the top end of the second electric slider (31), and a top plate (33) is fixedly arranged at the top end of the four third telescopic rods (32), a plurality of cross bars (34) are evenly arranged at the bottom end of the top plate (33), a plurality of circular rings (341) are sleeved on the plurality of cross bars (34), a bolt (344) is passed through the top end of the circular ring (341), a connecting rod (342) is fixedly connected to the bottom end of the circular ring (341), and a suction cup (343) is also provided at the bottom end of the connecting rod (342).

7. The automobile sheet metal grinding and positioning tool according to claim 1, characterized in that: The grinding mechanism (2) comprises a mounting seat (21), the mounting seat (21) being fixedly arranged on a surface on one side of the top of the workbench (1), and a second electric rotating rod (22) being arranged on the top of the mounting seat (21), and a fourth telescopic rod (23) being arranged on the top of the second electric rotating rod (22), and a mechanical arm (24) being arranged on the top of the fourth telescopic rod (23), and a grinding disc (25) being detachably connected to one end of the mechanical arm (24) away from the fourth telescopic rod (23).

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