Double-drill-bit automatic drilling machine for automobile chassis

Abstract

The utility model discloses a double-drill-bit automobile chassis automatic drilling machine which comprises a supporting frame and a first connecting frame, the outer wall of the supporting frame is provided with the first connecting frame, the outer wall of the first connecting frame is provided with a second connecting frame, and the outer wall of the second connecting frame is provided with a fourth motor. A connecting shaft is installed at the output end of the fourth motor, a movable frame is arranged outside the second connecting frame on one side of the connecting shaft, the connecting shaft is connected with the movable frame, first air cylinders are symmetrically installed on the outer wall of the movable frame, and telescopic rods are installed at the output ends of the first air cylinders. According to the automatic drilling machine, convenient transverse movement and height adjustment are achieved, angle adjustment type drilling operation is facilitated, multi-position drilling operation on an automobile chassis is facilitated, the distance between holes is convenient to adjust, and the drilling efficiency of the automatic drilling machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic drilling machines, in particular to an automatic drilling machine for automobile chassis with double drill bits. Background Art

[0002] A drilling machine is a general term for machinery and equipment that uses a tool that is harder and sharper than the target object to leave a cylindrical hole or hole on the target object through rotary cutting or rotary extrusion. It is also called a drilling machine, a punching machine, a hole-drilling machine, a through-hole machine, etc. It achieves the desired effect by drilling holes in precision parts. There are semi-automatic drilling machines and fully automatic drilling machines. With the increase in human resource costs, most companies are considering fully automatic drilling machines as their development direction.

[0003] For example, an automatic drilling machine disclosed in the authorization announcement number CN207642331U includes a base, on which a face hole drilling motor and a face hole tapping motor are respectively installed, on which a face hole drilling multi-axis device is installed, on which a face hole tapping motor is installed, and on which a face hole tapping multi-axis device is installed, a stand is installed on the base, on which a top hole drilling motor and a top hole tapping motor are respectively installed on the top of the stand, on which a top hole drilling multi-axis device is installed, on which a top hole tapping motor is installed, and on which a top hole tapping multi-axis device is installed, a push cylinder and a clamping cylinder are installed on the stand, the clamping cylinder is parallel to the face hole drilling motor, and the push cylinder is perpendicular to the clamping cylinder;

[0004] Although it realizes automatic completion of drilling and tapping work, reduces the operation steps and saves manpower, it does not solve the problems that the existing automatic drilling machines are not conducive to convenient lateral movement and height adjustment during use, are not conducive to angle adjustment drilling operations, are not conducive to multi-position drilling operations on the automobile chassis, and are not conducive to adjusting the distance between holes, which affects the drilling efficiency of the automatic drilling machine. Utility Model Content

[0005] The purpose of the utility model is to provide a double-drill head automatic drilling machine for automobile chassis, so as to solve the problems proposed in the above background technology that the automatic drilling machine is not convenient for convenient lateral movement and height adjustment, is not convenient for angle adjustment drilling operations, is not convenient for multi-position drilling operations on the automobile chassis, is not convenient for adjusting the distance between holes, and affects the drilling efficiency of the automatic drilling machine.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-drill head automobile chassis automatic drilling machine, comprising a support frame and a first connecting frame, a first connecting frame is arranged on the outer wall of the support frame, a second connecting frame is arranged on the outer wall of the first connecting frame, a fourth motor is installed on the outer wall of the second connecting frame, a connecting shaft is installed on the output end of the fourth motor, a movable frame is arranged outside the second connecting frame on one side of the connecting shaft, and the connecting shaft is connected to the movable frame, a first cylinder is symmetrically installed on the outer wall of the movable frame, a telescopic rod is installed on the output end of the first cylinder, a support plate is arranged outside the movable frame on one side of the telescopic rod, and the telescopic rod is connected to the support plate, a second cylinder is installed on the outer wall of the support plate, a sliding arm is slidably installed on the outer wall of the support plate on one side of the second cylinder, a first motor is installed on the bottom end of the sliding arm, a connecting drill is installed on the output end of the first motor, a support rod is installed on the output end of the second cylinder, and the bottom end of the support rod is connected to the sliding arm.

[0007] Preferably, a support arm is provided at the top end of the support frame, a connection box is installed at the bottom end of the support arm, a fifth motor is installed on the outer wall of the connection box, and the fifth motor extends to the interior of the connection box.

[0008] Preferably, a rotating shaft is slidably installed inside the connecting box on one side of the fifth motor, and the rotating shaft extends to the outside of the connecting box and is connected to the support frame. A worm is installed at the output end of the fifth motor, and a worm wheel is mounted on the surface of the rotating shaft on one side of the worm, and the worm and the worm wheel are meshed with each other.

[0009] Preferably, a second motor is installed inside the support frame on one side of the first connecting frame, a first threaded rod is arranged inside the support frame on one side of the second motor, and the output end of the second motor is connected to the first threaded rod, a first threaded block is mounted on the surface of the first threaded rod, and the first threaded rod is threadedly connected to the first threaded block, and the first threaded block is fixedly connected to the first connecting frame.

[0010] Preferably, a first slide rail is symmetrically installed inside the support frame on one side of the second motor, a first slider is installed on the outer wall of the first connecting frame on one side of the first slide rail, and the first slide rail is slidably connected to the first slider.

[0011] Preferably, a third motor is installed on the outer wall of the first connecting frame on one side of the second connecting frame, a second threaded rod is installed on the output end of the third motor, and the second threaded rod is movably connected to the first connecting frame, a second threaded block is mounted on the surface of the second threaded rod, and the second threaded rod is threadedly connected to the second threaded block, and the second threaded block is fixedly connected to the second connecting frame.

[0012] Preferably, second slide rails are symmetrically installed on the outer wall of the first connecting frame on one side of the second threaded rod, second sliding blocks are installed on the outer wall of the second connecting frame on one side of the second sliding rails, and the second slide rails are slidably connected to the second sliding blocks.

[0013] Preferably, a control panel is installed on the outer wall of the support frame, and the output end of the control panel is electrically connected to the input ends of the first cylinder, the second cylinder, the first motor, the second motor, the third motor, the fourth motor and the fifth motor.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the automatic drilling machine not only realizes convenient lateral movement and height adjustment, facilitates angle-adjustable drilling operations, facilitates multi-position drilling operations on the chassis of an automobile, but also facilitates adjustment of the distance between holes, thereby improving the drilling efficiency of the automatic drilling machine;

[0015] (1) The first threaded rod is driven to rotate by the second motor, and the first threaded block moves on the surface of the first threaded rod. The first threaded block drives the first connecting frame to move as a whole, so that the first connecting frame drives the second connecting frame to move horizontally, and the second connecting frame drives the movable frame to move horizontally, and the movable frame drives the support plate to move horizontally through the first cylinder, and the support plate drives the first motor and the connecting drill to move horizontally through the sliding arm, so that the connecting drill moves to the top of the automobile chassis. The second threaded rod is driven to rotate by the third motor, and the second threaded block moves on the surface of the second threaded rod. Under the sliding support of the second slide rail and the second slider, the second threaded block drives the second connecting frame as a whole to adjust the height, and the second connecting frame drives the movable frame to adjust the height, and the movable frame drives the support plate to adjust the height through the first cylinder, and the support plate drives the first motor and the connecting drill to adjust the height through the sliding arm, so that the connecting drill is conveniently adjusted to the top of the automobile chassis, and the first motor drives the connecting drill to perform drilling operations on the automobile chassis, so that the automatic drilling machine can move horizontally conveniently, and the height control and adjustment are convenient, thereby improving the convenience of the automatic drilling machine adjustment and control;

[0016] (2) The support rod is driven to move by the second cylinder, and the sliding arm is driven to move by the support rod, and the sliding arm drives the first motor and the connected drill bit to move downward to facilitate the connected drill bit to perform adjustable drilling operations, the telescopic rod is driven to move by the first cylinder, and the support plate is driven to move by the telescopic rod, and the support plate drives the first motor and the connected drill bit to move through the sliding arm to facilitate adjusting the spacing between the two sets of connected drill bits to adjust the distance between the holes, the connecting shaft is driven to rotate by the fourth motor, the movable frame is driven to rotate by the connecting shaft, the first cylinder is driven to rotate by the movable frame, the support plate is driven to rotate by the first cylinder through the telescopic rod, and the support plate The sliding arm drives the first motor and the connected drill bit to rotate, so as to facilitate the connected drill bit to perform angle-adjustable drilling operations. The fifth motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the rotating shaft to rotate, the rotating shaft drives the support frame to rotate as a whole, and the support frame drives the first motor and the connected drill bit to perform circular rotation, so as to facilitate the connected drill bit to perform multi-position drilling operations on the automobile chassis, thereby realizing convenient angle-adjustable drilling operations of the automatic drilling machine, facilitating multi-position drilling operations on the automobile chassis, facilitating the adjustment of the distance between holes, and improving the drilling efficiency of the automatic drilling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the connecting shaft of the utility model;

[0019] Figure 3 This is a front view structural schematic diagram of the utility model;

[0020] Figure 4 This is a schematic diagram of the front cross-sectional structure of the worm of the utility model;

[0021] Figure 5 It is a three-dimensional enlarged structural schematic diagram of the second threaded block of the utility model.

[0022] In the figure: 1. support frame; 2. first connecting frame; 3. second connecting frame; 4. movable frame; 5. first cylinder; 6. telescopic rod; 7. support plate; 8. second cylinder; 9. support rod; 10. sliding arm; 11. first motor; 12. connecting drill bit; 13. second motor; 14. first threaded rod; 15. first threaded block; 16. first slide rail; 17. first slider; 18. third motor; 19. second threaded rod; 20. second threaded block; 21. second slide rail; 22. second slider; 23. fourth motor; 24. connecting shaft; 25. support arm; 26. connecting box; 27. rotating shaft; 28. fifth motor; 29. ​​worm; 30. worm wheel; 31. control panel. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] See also Figure 1-5 , an embodiment provided by the utility model: a double-drill head automobile chassis automatic drilling machine, comprising a support frame 1 and a first connecting frame 2, the first connecting frame 2 is arranged on the outer wall of the support frame 1, the second connecting frame 3 is arranged on the outer wall of the first connecting frame 2, and a fourth motor 23 is installed on the outer wall of the second connecting frame 3, and the fourth motor 23 plays a role in power output, and a connecting shaft 24 is installed on the output end of the fourth motor 23, and a movable frame 4 is arranged outside the second connecting frame 3 on one side of the connecting shaft 24, and the connecting shaft 24 is connected to the movable frame 4, and a first cylinder 5 is symmetrically installed on the outer wall of the movable frame 4, and the first cylinder 5 plays a role in power output, and a telescopic rod 6 is installed on the output end of the first cylinder 5, and a support plate 7 is arranged outside the movable frame 4 on one side of the telescopic rod 6, and the telescopic rod 6 is connected to the support plate 7, and a second cylinder 8 is installed on the outer wall of the support plate 7, and the second cylinder 8 plays a role in power output, and the second cylinder 8 on one side A sliding arm 10 is slidably mounted on the outer wall of the support plate 7, and a first motor 11 is mounted on the bottom end of the sliding arm 10. The first motor 11 plays a role in power output. A connecting drill 12 is mounted on the output end of the first motor 11, and a support rod 9 is mounted on the output end of the second cylinder 8. The bottom end of the support rod 9 is connected to the sliding arm 10. A support arm 25 is arranged on the top of the support frame 1, and a connecting box 26 is mounted on the bottom end of the support arm 25. A fifth motor 28 is mounted on the outer wall of the connecting box 26. The fifth motor 28 plays a role in power output, and the fifth motor 28 extends to the inside of the connecting box 26. A rotating shaft 27 is slidably mounted inside the connecting box 26 on one side of the fifth motor 28, and the rotating shaft 27 extends to the outside of the connecting box 26 and is connected to the support frame 1. A worm 29 is mounted on the output end of the fifth motor 28, and a worm wheel 30 is mounted on the surface of the rotating shaft 27 on one side of the worm 29, and the worm 29 and the worm wheel 30 are meshed with each other;

[0025] When in use, the second cylinder 8 is turned on by operating the control panel 31, and the second cylinder 8 drives the support rod 9 to move. Under the sliding support of the sliding arm 10 and the support plate 7, the support rod 9 drives the sliding arm 10 to move, and the sliding arm 10 drives the first motor 11 and the connecting drill bit 12 to move downward, so as to facilitate the connected drill bit 12 to perform adjustable drilling operations; the first cylinder 5 is turned on by operating the control panel 31, and the first cylinder 5 drives the telescopic rod 6 to move, and the telescopic rod 6 drives the support plate 7 to move, and the support plate 7 drives the first motor 11 and the connecting drill bit 12 to move through the sliding arm 10, so as to facilitate adjusting the spacing between the two groups of connecting drill bits 12 to adjust the distance of the holes; the fourth motor 23 is turned on by operating the control panel 31, and the fourth motor 23 drives the connecting shaft 24 to rotate, and the connecting shaft 24 drives the movable frame 4 to rotate, and the movable frame 4 drives the first cylinder 5 to rotate, and the first cylinder 5 drives the first motor 11 and the connecting drill bit 12 to rotate through the first cylinder 5. The telescopic rod 6 drives the support plate 7 to rotate, and the support plate 7 drives the first motor 11 and the connecting drill bit 12 to rotate through the sliding arm 10, so as to facilitate the connecting drill bit 12 to perform angle-adjustable drilling operations. The fifth motor 28 is turned on by operating the control panel 31. Under the support of the connecting box 26, the fifth motor 28 drives the worm 29 to rotate. Under the meshing action of the worm 29 and the worm wheel 30, the worm 29 drives the worm wheel 30 to rotate, and the worm wheel 30 drives the rotating shaft 27 to rotate. The rotating shaft 27 drives the support frame 1 to rotate as a whole, and the support frame 1 drives the first motor 11 and the connecting drill bit 12 to perform circular rotation, so as to facilitate the connecting drill bit 12 to perform multi-position drilling operations on the automobile chassis, realize the convenient angle-adjustable drilling operations of the automatic drilling machine, facilitate the multi-position drilling operations on the automobile chassis, facilitate the adjustment of the distance between the holes, and improve the drilling efficiency of the automatic drilling machine.

[0026] A second motor 13 is installed inside the support frame 1 on one side of the first connecting frame 2, and the second motor 13 plays a role in power output. A first threaded rod 14 is arranged inside the support frame 1 on one side of the second motor 13, and the output end of the second motor 13 is connected to the first threaded rod 14, and a first threaded block 15 is mounted on the surface of the first threaded rod 14, and the first threaded rod 14 is threadedly connected to the first threaded block 15, and the first threaded block 15 is fixedly connected to the first connecting frame 2, and a first slide rail 16 is symmetrically installed inside the support frame 1 on one side of the second motor 13, and a first slider 17 is installed on the outer wall of the first connecting frame 2 on one side of the first slide rail 16, and the first slide rail 16 is slidably connected to the first slider 17, and a third motor 18 is installed on the outer wall of the first connecting frame 2 on one side of the second connecting frame 3, and the third motor 18 plays a role in power output. , a second threaded rod 19 is installed at the output end of the third motor 18, and the second threaded rod 19 is movably connected to the first connecting frame 2, a second threaded block 20 is mounted on the surface of the second threaded rod 19, and the second threaded rod 19 is threadedly connected to the second threaded block 20, and the second threaded block 20 is fixedly connected to the second connecting frame 3, a second slide rail 21 is symmetrically installed on the outer wall of the first connecting frame 2 on one side of the second threaded rod 19, a second slider 22 is installed on the outer wall of the second connecting frame 3 on one side of the second slider 21, and the second slider 21 is slidably connected to the second slider 22, a control panel 31 is installed on the outer wall of the support frame 1, and the output end of the control panel 31 is electrically connected to the input end of the first cylinder 5, the second cylinder 8, the first motor 11, the second motor 13, the third motor 18, the fourth motor 23, and the fifth motor 28;

[0027] When in use, an external power supply is first connected, and the support arm 25 is installed on the ceiling above the assembly line to facilitate the connection of the drill bit 12 to drill holes in the chassis of the car on the assembly line. The second motor 13 is turned on by operating the control panel 31. Under the support of the support frame 1, the second motor 13 drives the first threaded rod 14 to rotate. Under the threaded support of the first threaded rod 14 and the first threaded block 15, the first threaded block 15 moves on the surface of the first threaded rod 14. Under the sliding support of the first slide rail 16 and the first slider 17, the first threaded block 15 drives the first connecting frame 2 to move as a whole, so that the first connecting frame 2 drives the second connecting frame 3 to move horizontally, and the second connecting frame 3 drives the movable frame 4 to move horizontally, and the movable frame 4 drives the support plate 7 to move horizontally through the first cylinder 5, and the support plate 7 drives the first motor 11 and the connecting drill bit 12 to move horizontally through the sliding arm 10, so that the connecting drill bit 12 is convenient to move to the top of the car chassis. The control panel 31 is turned on by operating the control panel 31. The third motor 18 is turned on. Under the support of the first connecting frame 2, the second threaded rod 19 is driven to rotate by the third motor 18. Under the threaded support of the second threaded rod 19 and the second threaded block 20, the second threaded block 20 moves on the surface of the second threaded rod 19. Under the sliding support of the second slide rail 21 and the second slide block 22, the second threaded block 20 drives the second connecting frame 3 as a whole to adjust its height. The second connecting frame 3 drives the movable frame 4 to adjust its height. The movable frame 4 drives the support plate 7 to adjust its height through the first cylinder 5. The support plate 7 drives the first motor 11 and the connecting drill bit 12 to adjust their height through the sliding arm 10, so as to facilitate the adjustment of the connecting drill bit 12 to the top of the automobile chassis. The first motor 11 is turned on by operating the control panel 31. The first motor 11 drives the connecting drill bit 12 to perform drilling operations on the automobile chassis, thereby realizing convenient lateral movement of the automatic drilling machine, facilitating height control and adjustment, and improving the convenience of adjustment and control of the automatic drilling machine.

[0028] Working principle: When in use, an external power supply is connected. First, the support arm 25 is installed on the ceiling above the assembly line to facilitate the connection of the drill bit 12 to drill holes in the chassis of the car on the assembly line. The second motor 13 drives the first threaded rod 14 to rotate, and the first threaded block 15 moves on the surface of the first threaded rod 14. The first threaded block 15 drives the first connecting frame 2 to move as a whole, so that the first connecting frame 2 drives the second connecting frame 3 to move horizontally, and the second connecting frame 3 drives the movable frame 4 to move horizontally. The movable frame 4 drives the support plate 7 to move horizontally through the first cylinder 5, and the support plate 7 drives the first motor 11 and the connecting frame through the sliding arm 10. The drill bit 12 moves laterally to facilitate the connection of the drill bit 12 to move above the automobile chassis, the second threaded rod 19 is driven by the third motor 18 to rotate, the second threaded block 20 moves on the surface of the second threaded rod 19, the second threaded block 20 drives the second connecting frame 3 to adjust the height as a whole, the second connecting frame 3 drives the movable frame 4 to adjust the height, the movable frame 4 drives the support plate 7 to adjust the height through the first cylinder 5, the support plate 7 drives the first motor 11 and the connection drill bit 12 to adjust the height through the sliding arm 10, so as to facilitate the connection of the drill bit 12 to be adjusted to the top of the automobile chassis, and the first motor 11 drives the connection drill bit 1 2 performs drilling operation on the chassis of the automobile, the second cylinder 8 drives the support rod 9 to move, the support rod 9 drives the sliding arm 10 to move, the sliding arm 10 drives the first motor 11 and the connecting drill 12 to move downward, so as to facilitate the connecting drill 12 to perform adjustable drilling operation, the first cylinder 5 drives the telescopic rod 6 to move, the telescopic rod 6 drives the support plate 7 to move, the support plate 7 drives the first motor 11 and the connecting drill 12 to move through the sliding arm 10, so as to facilitate the adjustment of the spacing between the two groups of connecting drills 12, so as to adjust the distance of the holes, the fourth motor 23 drives the connecting shaft 24 to rotate, the connecting shaft 24 drives the movable frame 4 to rotate, and the movable frame 4 The first cylinder 5 is driven to rotate, and the first cylinder 5 drives the support plate 7 to rotate through the telescopic rod 6. The support plate 7 drives the first motor 11 and the connecting drill bit 12 to rotate through the sliding arm 10, so as to facilitate the connecting drill bit 12 to perform angle-adjustable drilling operations. The fifth motor 28 drives the worm 29 to rotate, and the worm 29 drives the worm wheel 30 to rotate. The worm wheel 30 drives the rotating shaft 27 to rotate, and the rotating shaft 27 drives the support frame 1 to rotate as a whole. The support frame 1 drives the first motor 11 and the connecting drill bit 12 to rotate in a circular manner, so as to facilitate the connecting drill bit 12 to perform multi-position drilling operations on the automobile chassis, so as to complete the use of the automatic drilling machine.

[0029] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A dual-drill-bit automobile chassis automatic drilling machine, comprising a support frame (1) and a first connecting frame (2), characterized in that: A first connecting frame (2) is arranged on the outer wall of the support frame (1), a second connecting frame (3) is arranged on the outer wall of the first connecting frame (2), a fourth motor (23) is installed on the outer wall of the second connecting frame (3), a connecting shaft (24) is installed at the output end of the fourth motor (23), a movable frame (4) is arranged outside the second connecting frame (3) on one side of the connecting shaft (24), and the connecting shaft (24) is connected to the movable frame (4), a first cylinder (5) is symmetrically installed on the outer wall of the movable frame (4), and a telescopic rod (6) is installed at the output end of each of the first cylinders (5), and the telescopic rod (6) is installed at the output end of each of the first cylinders (5). A support plate (7) is arranged outside the movable frame (4) on one side of the retractable rod (6), and the telescopic rod (6) is connected to the support plate (7). A second cylinder (8) is installed on the outer wall of the support plate (7). A sliding arm (10) is slidably installed on the outer wall of the support plate (7) on one side of the second cylinder (8). A first motor (11) is installed at the bottom end of the sliding arm (10). A connecting drill bit (12) is installed at the output end of the first motor (11). A support rod (9) is installed at the output end of the second cylinder (8), and the bottom end of the support rod (9) is connected to the sliding arm (10).

2. The double-drill-head automobile chassis automatic drilling machine according to claim 1, characterized in that: A support arm (25) is provided at the top end of the support frame (1), a connection box (26) is installed at the bottom end of the support arm (25), a fifth motor (28) is installed on the outer wall of the connection box (26), and the fifth motor (28) extends to the interior of the connection box (26).

3. The double-drill-head automobile chassis automatic drilling machine according to claim 2, characterized in that: A rotating shaft (27) is slidably mounted inside the connection box (26) on one side of the fifth motor (28), and the rotating shaft (27) extends to the outside of the connection box (26) and is connected to the support frame (1). A worm (29) is mounted on the output end of the fifth motor (28), and a worm wheel (30) is mounted on the surface of the rotating shaft (27) on one side of the worm (29), and the worm (29) and the worm wheel (30) are meshed with each other.

4. The double-drill-head automobile chassis automatic drilling machine according to claim 1, characterized in that: A second motor (13) is installed inside the support frame (1) on one side of the first connecting frame (2), a first threaded rod (14) is arranged inside the support frame (1) on one side of the second motor (13), and an output end of the second motor (13) is connected to the first threaded rod (14), a first threaded block (15) is mounted on the surface of the first threaded rod (14), the first threaded rod (14) is threadedly connected to the first threaded block (15), and the first threaded block (15) is fixedly connected to the first connecting frame (2).

5. The double-drill-head automobile chassis automatic drilling machine according to claim 4, characterized in that: A first slide rail (16) is symmetrically installed inside the support frame (1) on one side of the second motor (13), and a first sliding block (17) is installed on the outer wall of the first connecting frame (2) on one side of the first slide rail (16), and the first slide rail (16) and the first sliding block (17) are slidably connected.

6. The double-drill-head automobile chassis automatic drilling machine according to claim 1, characterized in that: A third motor (18) is mounted on the outer wall of the first connecting frame (2) on one side of the second connecting frame (3); a second threaded rod (19) is mounted on the output end of the third motor (18); the second threaded rod (19) is movably connected to the first connecting frame (2); a second threaded block (20) is mounted on the surface of the second threaded rod (19); the second threaded rod (19) is threadedly connected to the second threaded block (20); and the second threaded block (20) is fixedly connected to the second connecting frame (3).

7. The double-drill-head automobile chassis automatic drilling machine according to claim 6, characterized in that: A second slide rail (21) is symmetrically mounted on the outer wall of the first connecting frame (2) on one side of the second threaded rod (19), a second sliding block (22) is mounted on the outer wall of the second connecting frame (3) on one side of the second sliding rail (21), and the second sliding rail (21) is slidably connected to the second sliding block (22).

8. The double-drill-head automobile chassis automatic drilling machine according to claim 1, characterized in that: A control panel (31) is installed on the outer wall of the support frame (1), and an output end of the control panel (31) is electrically connected to input ends of the first cylinder (5), the second cylinder (8), the first motor (11), the second motor (13), the third motor (18), the fourth motor (23), and the fifth motor (28).

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