Stable double-sided drilling device for automobile sheet metal part

Abstract

The stable double-face drilling device for the automobile sheet metal part comprises a plurality of supporting legs, the top ends of the supporting legs are fixedly connected with a workbench, the two sides of the top end of the workbench are fixedly connected with supporting frames correspondingly, sliding grooves are formed in the top ends of the supporting frames in an inwards-concave mode correspondingly, and overturning assemblies are arranged in the sliding grooves in a sliding mode; the opposite ends of the overturning assemblies are fixedly connected with clamping assemblies correspondingly. One end of the overturning assembly is in transmission connection with a transmission chain in cooperation with a chain wheel, and the middle of the transmission chain is in transmission connection with a forward-reverse motor in cooperation with a chain wheel and fixedly installed in the middle of the top end of the workbench. A movable platform is fixedly installed on the top of the workbench, the driving end of the movable platform is fixedly connected with one end of an electric telescopic rod, and the other end of the electric telescopic rod is fixedly connected with a drilling motor.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, in particular to a stable double-sided drilling device for automobile sheet metal parts. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates (usually less than 6mm), including shearing, punching / cutting / compounding, folding, welding, riveting, splicing, forming (such as car body), etc.

[0003] When processing automobile sheet metal parts, some drilling devices are used to drill holes in the automobile sheet metal parts. After searching, a Chinese patent with application number CN202022514345.2 discloses a double-sided drilling device for automobile sheet metal parts, including an auxiliary lifting mechanism, a mobile drilling mechanism and an adjustable positioning clamping mechanism; the auxiliary lifting mechanism includes a longitudinal lifting assembly and a pallet, the longitudinal lifting assembly is vertically arranged, and the pallet is horizontally arranged at the driving end of the longitudinal lifting assembly; the mobile drilling mechanism includes a transverse linear adjustment assembly and a drilling device, and the transverse linear adjustment assembly is horizontally arranged directly above the pallet through a bracket; the adjustable positioning clamping mechanism includes a positioning plate, a bidirectional linear adjustment assembly and a flip positioning mechanism, the positioning plate is located on the side of the pallet and is arranged perpendicular to the horizontal plane, the bidirectional linear adjustment assembly is installed on the positioning plate, and the flip positioning mechanism includes a synchronous driving mechanism and oppositely distributed clamping mechanisms.

[0004] Although the device can be flexibly adjusted according to the size of the sheet metal and is easy to use, it is not convenient to drill holes on the right-angle surfaces of sheet metal parts with right-angle structures (such as headlight brackets, etc.). For this reason, we propose a stable double-sided drilling device for automotive sheet metal parts to solve the above problem. Summary of the invention

[0005] The object of the present invention is to provide a stable double-sided drilling device for automobile sheet metal parts to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stable double-sided drilling device for automobile sheet metal, comprising a plurality of support legs, the top ends of the support legs are fixedly connected to a workbench, the top sides of the workbench are respectively fixedly connected to a support frame, the top ends of the support frames are respectively concavely provided with a slide groove, a flip assembly is slidably provided in the slide groove, and the opposite ends of the flip assembly are respectively fixedly connected to a clamping assembly;

[0007] One end of the flip assembly is connected to the transmission chain in cooperation with the sprocket drive, the middle part of the transmission chain is connected to the forward and reverse motor in cooperation with the sprocket drive, and the forward and reverse motor is fixedly installed in the middle of the top end of the workbench;

[0008] A mobile platform is fixedly installed on the top of the workbench, a driving end of the mobile platform is fixedly connected to one end of an electric telescopic rod, and the other end of the electric telescopic rod is fixedly connected to a drilling motor.

[0009] Preferably, the support frame is a U-shaped structure and is symmetrically arranged.

[0010] Preferably, the mobile platform includes linear motor 1 and linear motor 2, the bottom end of linear motor 1 is fixedly connected to the top of the workbench, the driving end of linear motor 1 is fixedly connected to the bottom end of linear motor 2, and the top driving end of linear motor 2 is fixedly connected to the electric telescopic rod.

[0011] Preferably, the length directions of linear motor 1 and linear motor 2 are arranged perpendicular to each other, and both linear motor 1 and linear motor 2 are located at the bottom of the support frame. The length direction of linear motor 1 is arranged parallel to the length direction of the workbench, and the length direction of linear motor 2 is arranged parallel to the width direction of the workbench.

[0012] Preferably, two sides of the bottom end of the second linear motor are respectively fixedly connected to one end of a plurality of clamping components, and the other end of the clamping component is connected to a scrub brush via a threaded structure, and the scrub brush slides against the top of the workbench.

[0013] Preferably, the clamping assembly includes a fixed cylinder, a spring, a limiting plate, a movable column and a connecting column, one end of the fixed cylinder is fixedly connected to the bottom end of the linear motor 2, the other end of the fixed cylinder is slidably sleeved on the movable column, one end of the movable column is fixedly connected to the limiting plate, the limiting plate is slidably sleeved on the fixed cylinder, the end of the limiting plate away from the movable column is fixedly connected to one end of the spring, the other end of the spring is fixedly connected to the inner wall of the fixed cylinder, the other end of the movable column is rotatably connected to the connecting column, and a threaded hole is provided at the end of the connecting column away from the movable column, the threaded hole is connected to the threaded column through a threaded structure, and the threaded column is fixedly connected to the plate brush.

[0014] Preferably, the flip assembly includes a screw rod, a slider, an articulated seat, a transmission connecting rod, a support connecting rod, and a support seat. The screw rod is rotatably installed in the slide groove, one end of the screw rod is rotatably arranged outside the support frame and the end of the screw rod cooperates with the sprocket to transmit and connect the transmission chain, the screw rod is sleeved on the slider through a threaded structure, the slider is slidably arranged in the slide groove, the top end of the slider is fixedly connected to the articulated seat, one side of the articulated seat is respectively hinged to one end of the transmission connecting rod, the other end of the transmission connecting rod is respectively hinged to one end of the support connecting rod, the other end of the support connecting rod is respectively hinged to the end of the support seat, and the support seat is fixedly connected to one end of the top of the workbench.

[0015] Preferably, the supporting link is an L-shaped structure, and the flipping components are symmetrically arranged.

[0016] Preferably, the clamping assembly includes a placement plate, a threaded rod, an adjusting knob, a clamping plate, a threaded knob, and a pressure plate. One end of the placement plate is fixedly connected to the transmission connecting rod, the middle part of one end of the placement plate is connected to the threaded rod via a threaded structure, the end of the threaded rod away from the placement plate is coaxially fixedly connected to the adjusting knob, the adjusting knob is rotatably sleeved on one end of the clamping plate, and the other end of the clamping plate is sleeved on the threaded knob via a threaded structure, the end of the threaded knob is rotatably connected to the pressure plate, and the pressure plate is movably arranged between the placement plate and the clamping plate.

[0017] Preferably, the placement plate and the clamping plate are both L-shaped structures, the placement plate and the clamping plate are arranged opposite to each other, the length direction of the placement plate is arranged parallel to the length direction of the transmission connecting rod, and one end of the clamping plate is fixedly connected to a rubber block.

[0018] Compared with the prior art, the beneficial effects of the present invention are: automobile sheet metal parts (such as headlight brackets) are clamped and fixed by clamping components, the mobile platform drives the drilling motor to achieve two-dimensional movement, thereby facilitating the drilling operation on the fixed automobile sheet metal parts, and the flipping component drives the clamping component to flip, thereby realizing the right-angle double-sided drilling of automobile sheet metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention from a side perspective;

[0021] Figure 3 It is a structural schematic diagram of another viewing angle of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the clamping assembly in the present invention;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the clamping component in the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the flip assembly of the present invention after flipping 90 degrees.

[0025] In the figure: supporting leg 1, workbench 2, mobile platform 3, linear motor 1 31, linear motor 2 32, electric telescopic rod 4, drilling motor 5, support frame 6, slide 61, flip assembly 7, screw 71, slider 72, hinge seat 73, transmission connecting rod 74, support connecting rod 75, support seat 76, clamping assembly 8, placement plate 81, threaded rod 82, adjustment knob 83, clamping plate 84, rubber block 841, threaded knob 85, pressure plate 86, forward and reverse motor 9, transmission chain 10, brush 11, clamping assembly 12, fixed cylinder 121, spring 122, limit plate 123, movable column 124, connecting column 125, threaded hole 1251. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1

[0028] Reference Figure 1 , 2 , which is the first embodiment of the present invention, and provides a stable double-sided drilling device for automobile sheet metal parts, comprising a plurality of support legs 1, the top of the support legs 1 is fixedly connected to a workbench 2, the top sides of the workbench 2 are respectively fixedly connected to a support frame 6, the top of the support frame 6 is respectively concavely provided with a slide groove 61, a flip assembly 7 is slidably provided in the slide groove 61, and the opposite ends of the flip assembly 7 are respectively fixedly connected to a clamping assembly 8;

[0029] One end of the flip assembly 7 is connected to the transmission chain 10 through the sprocket transmission, and the middle part of the transmission chain 10 is connected to the forward and reverse motor 9 through the sprocket transmission. The forward and reverse motor 9 is fixedly installed in the middle of the top of the workbench 2;

[0030] A mobile platform 3 is fixedly installed on the top of the workbench 2, and a driving end of the mobile platform 3 is fixedly connected to one end of an electric telescopic rod 4, and the other end of the electric telescopic rod 4 is fixedly connected to a drilling motor 5.

[0031] The automobile sheet metal parts that need to be drilled (such as headlight brackets) are placed flat on the clamping assembly 8, and the clamping assembly 8 clamps and fixes the automobile sheet metal parts to ensure the stability of the automobile sheet metal parts. According to the position of the hole to be drilled, the mobile platform 3 works to realize the two-dimensional movement of the drilling motor 5, which is convenient for drilling operations at different positions on the automobile sheet metal parts. When drilling, the drill bit is fixedly installed on the output shaft of the drilling motor 5, and the drilling motor 5 is powered on to work, and the electric telescopic rod 4 is powered on to work to realize the drilling operation on the automobile sheet metal parts. When it is necessary to drill the other side of the automobile sheet metal part at a right angle, the forward and reverse motors 9 are powered on to work, and the forward and reverse motors 9 cooperate with the transmission chain 10 to drive the flip assembly 7 to work, and the flip assembly 7 drives the clamping assembly 8 to finally form a hole. Figure 6 The state shown in the figure drives the clamped automobile sheet metal to flip 90 degrees, so that the other side of the automobile sheet metal is in a horizontal state, and the mobile platform 3 works to drive the drilling motor 5 to move to the drilling position, so as to facilitate the drilling work on the other side of the automobile sheet metal; at the same time, the flip component 7 can realize an angle flip of 0-90 degrees, so as to facilitate the drilling work on different angle surfaces of the automobile sheet metal.

[0032] Example 2

[0033] Reference Figure 1-6 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment. Specifically, the support frame 6 is a U-shaped structure, and the support frame 6 is symmetrically arranged. The symmetrical arrangement makes the operation of the flip assembly 7 more stable.

[0034] Specifically, the mobile platform 3 includes a linear motor 1 31 and a linear motor 2 32. The bottom end of the linear motor 1 31 is fixedly connected to the top of the workbench 2, the driving end of the linear motor 1 31 is fixedly connected to the bottom end of the linear motor 2 32, and the top driving end of the linear motor 2 32 is fixedly connected to the electric telescopic rod 4.

[0035] Furthermore, the length directions of the linear motor 1 31 and the linear motor 2 32 are arranged perpendicular to each other, and the linear motor 1 31 and the linear motor 2 32 are both located at the bottom of the support frame 6, the length direction of the linear motor 1 31 is arranged parallel to the length direction of the workbench 2, and the length direction of the linear motor 2 32 is arranged parallel to the width direction of the workbench 2.

[0036] When the linear motor 1 31 is powered on, the linear motor 1 31 drives the drilling motor 5 to move in the X-axis direction, and the linear motor 2 32 drives the drilling motor 5 to move in the Y-axis direction, thereby realizing the two-dimensional movement of the drilling motor 5, which is convenient for drilling operations at different positions on the automobile sheet metal.

[0037] Furthermore, the bottom ends of the linear motor 2 32 are fixedly connected to one end of a plurality of clamping components 12 on both sides, and the other end of the clamping component 12 is connected to a scrub brush 11 through a threaded structure, and the scrub brush 11 slides against the top of the workbench 2 .

[0038] Specifically, the clamping component 12 includes a fixed cylinder 121, a spring 122, a limiting plate 123, a movable column 124, and a connecting column 125. One end of the fixed cylinder 121 is fixedly connected to the bottom end of the linear motor 232, and the other end of the fixed cylinder 121 is slidably sleeved on the movable column 124. One end of the movable column 124 is fixedly connected to the limiting plate 123, and the limiting plate 123 is slidably sleeved on the fixed cylinder 121. One end of the limiting plate 123 away from the movable column 124 is fixedly connected to one end of the spring 122, and the other end of the spring 122 is fixedly connected to the inner wall of the fixed cylinder 121. The other end of the movable column 124 is rotatably connected to the connecting column 125. A threaded hole 1251 is provided at one end of the connecting column 125 away from the movable column 124. The threaded hole 1251 is connected to the threaded column through a threaded structure, and the threaded column is fixedly connected to the plate brush 11.

[0039] Under the elastic force of the spring 122, the scrub brush 11 can always be in contact with the top surface of the workbench 2, and a net bag can be fixedly installed on the edges of the workbench 2. After the drilling is completed, the linear motor 31 is powered on, and the linear motor 31 drives the linear motor 2 32 to move back and forth along the length direction of the workbench 2, thereby driving the scrub brush 11 to move synchronously. The scrub brush 11 scrapes and cleans the top surface of the workbench 2, so that the debris generated by the drilling finally falls into the net bag for collection.

[0040] Specifically, the flip assembly 7 includes a screw rod 71, a slider 72, an articulated seat 73, a transmission link 74, a support link 75, and a support seat 76. The screw rod 71 is rotatably installed in the slide groove 61, one end of the screw rod 71 is rotatably arranged outside the support frame 6 and the end of the screw rod 71 cooperates with the sprocket transmission to connect the transmission chain 10, the screw rod 71 is sleeved with the slider 72 through a threaded structure, the slider 72 is slidably arranged in the slide groove 61, the top of the slider 72 is fixedly connected to the articulated seat 73, one side of the articulated seat 73 is respectively hinged to one end of the transmission link 74, the other end of the transmission link 74 is respectively hinged to one end of the support link 75, the other end of the support link 75 is respectively hinged to the end of the support seat 76, and the support seat 76 is fixedly connected to one end of the top of the workbench 2.

[0041] Furthermore, the supporting connecting rod 75 is an L-shaped structure, and the flip assembly 7 is symmetrically arranged.

[0042] When it is necessary to drill a hole on the other side of the automobile sheet metal at a right angle, the forward and reverse motors 9 are powered on and work, and the forward and reverse motors 9 cooperate with the transmission chain 10 to drive the flip assembly 7 to work, the screw rod 71 of the flip assembly 7 rotates, and the screw rod 71 drives the slider 72 to slide in the slide groove 61, and the slider 72 then drives the fixed hinge seat 73 to move synchronously, and the hinge seat 73 drives the hinged transmission connecting rod 74 to swing, and the transmission connecting rod 74 cooperates with the hinged support connecting rod 75. At the same time, since the end of the support connecting rod 75 is hinged to the support seat 76, and the support seat 76 is fixedly installed on the workbench 2, the transmission connecting rod 74 is supported, so that the transmission connecting rod 74 is finally formed. Figure 6 In the vertical state shown, the transmission connecting rod 74 drives the fixed placement plate 81 to flip synchronously into a vertical state, and then drives the clamped automobile sheet metal to flip 90 degrees, so that the other side of the automobile sheet metal is in a horizontal state, and the mobile platform 3 works to drive the drilling motor 5 to move to the drilling position, which is convenient for drilling on the other side of the automobile sheet metal; at the same time, the flip component 7 can realize an angle flip of 0-90 degrees, which is convenient for drilling on different angle surfaces of the automobile sheet metal.

[0043] Specifically, the clamping assembly 8 includes a placement plate 81, a threaded rod 82, an adjusting knob 83, a clamping plate 84, a threaded knob 85, and a pressure plate 86. One end of the placement plate 81 is fixedly connected to the transmission connecting rod 74, the middle part of one end of the placement plate 81 is connected to the threaded rod 82 through a threaded structure, and the end of the threaded rod 82 away from the placement plate 81 is coaxially fixedly connected to the adjusting knob 83. The adjusting knob 83 is rotatably sleeved on one end of the clamping plate 84, and the other end of the clamping plate 84 is sleeved on the threaded knob 85 through a threaded structure. The end of the threaded knob 85 is rotatably connected to the pressure plate 86, and the pressure plate 86 is movably arranged between the placement plate 81 and the clamping plate 84.

[0044] Furthermore, the placement plate 81 and the clamping plate 84 are both L-shaped structures, the placement plate 81 and the clamping plate 84 are arranged opposite to each other, the length direction of the placement plate 81 is arranged parallel to the length direction of the transmission connecting rod 74, and one end of the clamping plate 84 is fixedly connected to a rubber block 841.

[0045] The two sides of the automobile sheet metal parts are placed on the placement plate 81, and the clamping plate 84 is manually held in position so that the clamping plate 84 is in a position such as Figure 1In the structure shown, the automobile sheet metal is located between the clamping plate 84 and the placement plate 81, and then the adjusting knob 83 is manually turned to drive the fixed threaded rod 82 to rotate, and the threaded rod 82 drives the clamping plate 84 to move toward the placement plate 81 through the threaded structure, and the rubber block 841 fixed to the clamping plate 84 contacts the automobile sheet metal, and the clamping plate 84 cooperates with the placement plate 81 to clamp and fix the two ends of the automobile sheet metal. Then the threaded knob 85 is manually turned to drive the pressure plate 86 to move toward the automobile sheet metal, and the pressure plate 86 is pressed on the automobile sheet metal, and the pressure plate 86 cooperates with the placement plate 81 to clamp and fix the automobile sheet metal in the thickness direction, thereby ensuring the stability of the automobile sheet metal.

[0046] Example 3

[0047] Reference Figure 1-6 , which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. When in use, the automobile sheet metal part (such as the headlight bracket) that needs to be drilled is placed flat on the clamping assembly 8, and both sides of the automobile sheet metal part are placed on the placement plate 81. When placing, the clamping plate 84 is manually kept in position so that the clamping plate 84 is in a position such as Figure 1 The structure shown in FIG. 8 is that the automobile sheet metal part is located between the clamping plate 84 and the placing plate 81. Then the adjusting knob 83 is manually turned to drive the fixed threaded rod 82 to rotate. The threaded rod 82 drives the clamping plate 84 to move toward the placing plate 81 through the threaded structure. The rubber block 841 fixed to the clamping plate 84 contacts the automobile sheet metal part. The clamping plate 84 cooperates with the placing plate 81 to clamp and fix the two ends of the automobile sheet metal part. Then the threaded knob 85 is manually turned to drive the pressure plate 86 to move toward the automobile sheet metal part. The pressure plate 86 is pressed on the automobile sheet metal part. The pressure plate 86 cooperates with the placing plate 81 to clamp and fix the automobile sheet metal part in the thickness direction, thereby ensuring the stability of the automobile sheet metal part. According to the position of the hole to be drilled, the mobile platform 3 works, the linear motor 1 31 is powered on, the linear motor 1 31 drives the drilling motor 5 to move in the X-axis direction, and the linear motor 2 32 drives the drilling motor 5 to move in the Y-axis direction, thereby realizing the drilling motor The two-dimensional movement of 5 is convenient for drilling operations at different positions on the automobile sheet metal parts. When drilling, a drill bit is fixedly installed on the output shaft of the drilling motor 5, and the drilling motor 5 is powered on to work, and the electric telescopic rod 4 is powered on to extend and retract to realize the drilling operation on the automobile sheet metal parts. When it is necessary to drill a hole on the other side of the automobile sheet metal part at a right angle, the forward and reverse motors 9 are powered on to work, and the forward and reverse motors 9 cooperate with the transmission chain 10 to drive the flip assembly 7 to work, and the screw rod 71 of the flip assembly 7 rotates, and the screw rod 71 drives the slider 72 to slide in the slide groove 61, and the slider 72 then drives the fixed hinge seat 73 to move synchronously, and the hinge seat 73 drives the hinged transmission connecting rod 74 to swing, and the transmission connecting rod 74 cooperates with the hinged support connecting rod 75. At the same time, because the end of the support connecting rod 75 is hinged to the support seat 76, and the support seat 76 is fixedly installed on the workbench 2, the transmission connecting rod 74 is supported, so that the transmission connecting rod 74 is finally formed. Figure 6 In the vertical state shown, the transmission connecting rod 74 drives the fixed placement plate 81 to flip synchronously into a vertical state, and then drives the clamped automobile sheet metal to flip 90 degrees, so that the other side of the automobile sheet metal is in a horizontal state, and the mobile platform 3 works to drive the drilling motor 5 to move to the drilling position, which is convenient for drilling on the other side of the automobile sheet metal; at the same time, the flip component 7 can realize an angle flip of 0-90 degrees, which is convenient for drilling on different angle surfaces of the automobile sheet metal.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable double-sided drilling device for automobile sheet metal parts, comprising a plurality of support legs (1), Features: The top of the support leg (1) is fixedly connected to the workbench (2), and the two sides of the top of the workbench (2) are respectively fixedly connected to the support frame (6), and the top of the support frame (6) is respectively provided with a concave slide groove (61), and a flip assembly (7) is slidably provided in the slide groove (61), and the opposite ends of the flip assembly (7) are respectively fixedly connected to the clamping assembly (8); One end of the flip assembly (7) is connected to a transmission chain (10) in cooperation with a sprocket drive, and the middle of the transmission chain (10) is connected to a forward and reverse motor (9) in cooperation with a sprocket drive, and the forward and reverse motor (9) is fixedly mounted at the middle of the top end of the workbench (2); A mobile platform (3) is fixedly mounted on the top of the workbench (2); a driving end of the mobile platform (3) is fixedly connected to one end of an electric telescopic rod (4); and the other end of the electric telescopic rod (4) is fixedly connected to a drilling motor (5).

2. A stable double-sided drilling device for automobile sheet metal parts according to claim 1, Features: The support frame (6) is a U-shaped structure, and the support frame (6) is symmetrically arranged.

3. A stable double-sided drilling device for automobile sheet metal parts according to claim 1, Features: The mobile platform (3) comprises a linear motor 1 (31) and a linear motor 2 (32); the bottom end of the linear motor 1 (31) is fixedly connected to the top end of the workbench (2); the driving end of the linear motor 1 (31) is fixedly connected to the bottom end of the linear motor 2 (32); and the top driving end of the linear motor 2 (32) is fixedly connected to the electric telescopic rod (4).

4. A stable double-sided drilling device for automobile sheet metal parts according to claim 3, Features: The length directions of the linear motor 1 (31) and the linear motor 2 (32) are arranged perpendicular to each other. The linear motor 1 (31) and the linear motor 2 (32) are both located at the bottom of the support frame (6). The length direction of the linear motor 1 (31) is arranged parallel to the length direction of the workbench (2), and the length direction of the linear motor 2 (32) is arranged parallel to the width direction of the workbench (2).

5. A stable double-sided drilling device for automobile sheet metal parts according to claim 4, Features: The bottom ends of the second linear motor (32) are fixedly connected to one end of a plurality of close-fitting components (12) on both sides, and the other end of the close-fitting component (12) is connected to a brush (11) via a threaded structure, and the brush (11) slides against the top of the workbench (2).

6. A stable double-sided drilling device for automobile sheet metal parts according to claim 5, Features: The clamping assembly (12) comprises a fixed cylinder (121), a spring (122), a limiting plate (123), a movable column (124), and a connecting column (125); one end of the fixed cylinder (121) is fixedly connected to the bottom end of the second linear motor (32); the other end of the fixed cylinder (121) is slidably connected to the movable column (124); one end of the movable column (124) is fixedly connected to the limiting plate (123); the limiting plate (123) is slidably connected to the fixed cylinder (121); One end of the positioning plate (123) away from the movable column (124) is fixedly connected to one end of the spring (122), the other end of the spring (122) is fixedly connected to the inner wall of the fixed cylinder (121), the other end of the movable column (124) is rotatably connected to the connecting column (125), and a threaded hole (1251) is formed at one end of the connecting column (125) away from the movable column (124), the threaded hole (1251) is connected to the threaded column through a threaded structure, and the threaded column is fixedly connected to the plate brush (11).

7. A stable double-sided drilling device for automobile sheet metal parts according to claim 1, Features: The flip assembly (7) comprises a screw rod (71), a slider (72), an articulated seat (73), a transmission connecting rod (74), a support connecting rod (75), and a support seat (76). The screw rod (71) is rotatably installed in the slide groove (61). One end of the screw rod (71) is rotatably arranged outside the support frame (6) and the end of the screw rod (71) cooperates with the sprocket wheel to connect the transmission chain (10). The screw rod (71) is sleeved with the slider (72) through a threaded structure. The slider (72) is slidably arranged in the slide groove (61). The top end of the slider (72) is fixedly connected to the articulated seat (73). One side of the articulated seat (73) is respectively articulated to one end of the transmission connecting rod (74). The other end of the transmission connecting rod (74) is respectively articulated to one end of the support connecting rod (75). The other end of the support connecting rod (75) is respectively articulated to the end of the support seat (76). The support seat (76) is fixedly connected to one end of the top of the workbench (2).

8. A stable double-sided drilling device for automobile sheet metal parts according to claim 7, Features: The supporting connecting rod (75) is an L-shaped structure, and the flipping components (7) are symmetrically arranged.

9. A stable double-sided drilling device for automobile sheet metal parts according to claim 8, Features: The clamping assembly (8) comprises a placement plate (81), a threaded rod (82), an adjusting knob (83), a clamping plate (84), a threaded knob (85), and a pressure plate (86); one end of the placement plate (81) is fixedly connected to the transmission connecting rod (74); the middle part of one end of the placement plate (81) is connected to the threaded rod (82) via a threaded structure; one end of the threaded rod (82) away from the placement plate (81) is coaxially fixedly connected to the adjusting knob (83); the adjusting knob (83) is rotatably sleeved on one end of the clamping plate (84); the other end of the clamping plate (84) is sleeved on the threaded knob (85) via a threaded structure; the end of the threaded knob (85) is rotatably connected to the pressure plate (86); and the pressure plate (86) is movably arranged between the placement plate (81) and the clamping plate (84).

10. A stable double-sided drilling device for automobile sheet metal parts according to claim 9, Features: The placement plate (81) and the clamping plate (84) are both L-shaped structures. The placement plate (81) and the clamping plate (84) are arranged relative to each other. The length direction of the placement plate (81) is arranged parallel to the length direction of the transmission connecting rod (74). One end of the clamping plate (84) is fixedly connected to a rubber block (841).

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