Drilling machine tool for exhaust pipe machining

Abstract

The invention relates to the technical field of pipe drilling, in particular to a drilling machine tool for exhaust pipe machining, which comprises a base, a mounting roller is rotatably arranged between two ends of the base, clamps are respectively arranged on the periphery of the mounting roller, and a driving motor for driving the mounting roller to rotate is arranged on one side of the base. The cleaning part is arranged at the top of the base, the drilling part is arranged on the rear side of the base, and the dust collection part is located on the lower side of the mounting roller. Through collaborative design of the rotary mounting roller and the clamp, dynamic clamping and multi-station continuous machining of workpieces are achieved, a spring pre-pressing and negative pressure adsorption composite structure of the left clamping piece ensures lossless clamping of the special-shaped exhaust pipe, meanwhile, a sleeve rod is used for compressing air to form an airflow buffer layer, and the problem of workpiece separation and adhesion is solved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe drilling, and in particular to a drilling machine tool for exhaust pipe processing. Background Art

[0002] Automobile exhaust bellows is also called automobile exhaust pipe hose. It is installed in the exhaust pipe between the engine exhaust branch pipe and the muffler, making the entire exhaust system flexibly connected, thereby reducing vibration and noise, facilitating installation and extending the life of the exhaust muffler system. The main material is stainless steel SUS304, and the ferrule and pipe material can be stainless steel or aluminum-plated steel. The surface of the automobile exhaust pipe generally needs to be drilled for convenient drainage of the automobile exhaust pipe. The Chinese invention patent with application number CN202011012292.2 discloses a drilling device for automobile exhaust pipes, including a workbench, a positioning groove is provided on the top of the workbench, a collecting groove is provided on the top of the workbench, the collecting groove is on the left side of the positioning groove and is communicated with it, a box body 1 is fixedly connected to the top of the workbench, the box body 1 contacts with the positioning groove in front of the right side of the positioning groove, a clamping groove is provided on the left side of the box body 1, and a box body 2 is fixedly connected to the top of the box body 1.

[0003] When the above patent is in use, the workpiece can only be disassembled and replaced after all drilling processes are completed; the operator must stop the machine to change materials after the current workpiece processing is completed, resulting in long idling waiting time of the equipment and low processing efficiency; it is difficult to achieve synchronous pre-clamping of the workpiece at the next workstation during the drilling process; and the workpiece separation stage is prone to adhesion due to residual negative pressure, which makes it difficult to remove the workpiece and there is a risk of it falling. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a drilling machine for exhaust pipe processing to solve the problem that the existing pipe drilling device is difficult to achieve synchronous pre-clamping of the next workpiece during the drilling process and the workpiece separation stage is prone to adhesion due to residual negative pressure.

[0005] Based on the above purpose, the present invention provides a drilling machine tool for exhaust pipe processing, including a base, a mounting roller is rotated between the two ends of the base, clamps are respectively arranged around the mounting roller, a driving motor for driving the mounting roller to rotate is arranged on one side of the base, and also includes a cleaning part arranged on the top of the base, a drilling part arranged on the rear side of the base, and a dust suction part located on the lower side of the mounting roller; The clamp comprises a clamping frame fixed on the mounting roller, telescopic rods are rotatably arranged at both ends of the clamping frame, and driving components for driving two sets of telescopic rods to extend and retract are arranged at both ends of the clamping frame, wherein a left clamping piece is arranged at the end of the telescopic rod on the left side, and a right clamping piece is arranged at the end of the telescopic rod on the right side; The left clamping member includes a hollow rod sliding inside one end of the telescopic rod, a hollow end plate is fixed to the other end of the hollow rod, a spring is connected between the hollow end plate and the telescopic rod, an air inlet hole is opened on the inner circumference of the hollow end plate, and an exhaust hole is opened between the hollow end plate and the workpiece clamping surface; the right clamping member includes a fixed end plate fixed to the end of the telescopic rod, and a support rod is fixed to the fixed end plate; The telescopic rod includes a sleeve rod rotatably arranged with the clamping frame, a movable rod is slidably sleeved inside the sleeve rod, a driven gear is fixed on the surface of the sleeve rod, a fine hole is opened inside the movable rod, and the hollow rod slides with the inner wall of the fine hole; two groups of sealing parts for sealing the ends of the two groups of sleeve rods are symmetrically arranged on the front side of the base.

[0006] .According to the exhaust pipe processing drilling machine as described in the claim, the driving assembly includes a rotating rod that rotates with the clamping frame, a threaded rod is screwed inside the rotating rod, a limiting ring is fixed at the other end of the threaded rod, and the limiting ring is rotatably sleeved on the outer surface of the movable rod; a driving unit for driving the rotating rod to rotate is provided on the clamping frame.

[0007] Furthermore, the driving unit includes two groups of first transmission wheels and second transmission wheels symmetrically arranged on both sides of the clamping frame, wherein the first transmission wheel is fixed to the rotating rod, and the first transmission wheel and the second transmission wheel on the same side are provided with a transmission belt for transmission, and the second transmission wheel on the left side is provided with a first gear, and a second gear meshing with the first gear is also rotatably arranged on the left side of the clamping frame, and a micro motor for driving the second gear to rotate is arranged on the inner side of the clamping frame, and a connecting rod is rotated between the clamping frames, and both ends of the connecting rod are respectively connected to the two groups of second transmission wheels.

[0008] Furthermore, the cleaning part includes two groups of brackets, which are respectively fixed on the top of both ends of the base. A roller rotates between the two groups of brackets, a cleaning roller is sleeved on the roller, and soft bristles are arranged on the cleaning roller. A first motor for driving the roller to rotate is arranged on one side of the bracket.

[0009] Furthermore, the roller shaft is also fixedly sleeved with a first driving tooth, which can mesh with the driven gear; when the first driving tooth meshes with the driven gear, the first motor drives the roller shaft to rotate, and the roller shaft drives the cleaning roller and the workpiece to reverse through the first driving tooth.

[0010] Furthermore, the drilling part includes an external frame fixed to the rear side of the base, a screw is rotated between the inner walls on both sides of the external frame, a moving block is screwed on the screw, the moving block slides with the external frame, an electric telescopic rod is fixed on the side of the moving block away from the external frame, a drilling device is fixed on the other end of the electric telescopic rod, and a second motor for driving the screw to rotate is fixed to the outer side surface of one side of the external frame.

[0011] Furthermore, a second transmission rod is also rotatably provided on the inner wall of one side of the external frame, a second driving tooth is fixed to the other end of the second transmission rod, and a third motor for driving the second transmission rod to rotate is fixed to the outer side surface of the external frame, and the second driving tooth can engage with the driven gear. When the second driving tooth engages with the driven gear, the third motor will drive the telescopic rod to rotate, thereby driving the workpiece clamped by the telescopic rod to rotate, so that different sides of the workpiece face the drilling device.

[0012] Furthermore, the dust suction part includes two groups of connecting pipes respectively arranged on the two sides of the inner wall of the base, the other end of the connecting pipe is connected to a hollow cover that can seal the sleeve rod, and a suction pump is arranged on the outer side of one side of the base, the air inlet end of the suction pump is connected to the connecting pipe, and the air outlet end of the suction pump is connected to the dustproof box.

[0013] Furthermore, the sealing part includes a side support rod fixed to the front side of the base, and a rubber pad is fixed to the other end of the side support rod; when the driving motor drives the installation roller to rotate to position a group of clamps holding the workpiece on the front side of the base, the two groups of rubber pads are tightly attached to the two ends of the clamping frame and seal the two groups of telescopic rods.

[0014] Furthermore, a first sliding groove is formed on the inner wall of the sleeve rod, and a first sliding block slidably matched with the first sliding groove is fixed on the outer wall of the movable rod; a second sliding groove is formed on the inner wall of the movable rod, and a second sliding block slidably matched with the second sliding groove is fixed on the outer wall of the hollow rod.

[0015] The present invention realizes dynamic clamping and multi-station continuous processing of workpieces through the coordinated design of the rotary mounting roller and the clamp. The composite structure of the spring preload and negative pressure adsorption of the left clamping part ensures lossless clamping of the special-shaped exhaust pipe, and utilizes the sleeve rod to compress the air to form an airflow buffer layer, thereby eliminating the problem of separation and adhesion of the workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the first viewing angle of an embodiment of the present invention; Figure 2 is a schematic diagram of a second viewing angle structure of an embodiment of the present invention; Figure 3 A schematic diagram of a base structure according to an embodiment of the present invention; Figure 4 It is a schematic diagram of a top view of the structure of an embodiment of the present invention; Figure 5This is a schematic diagram of the installation roller structure of an embodiment of the present invention; Figure 6 For the embodiment of the present invention Figure 5 A is a schematic diagram of the enlarged structure of the middle part; Figure 7 This is a schematic diagram of the clamp structure according to an embodiment of the present invention; Figure 8 It is a schematic diagram of the partial structure of the clamping frame according to an embodiment of the present invention; Fig. 9 It is a schematic diagram of a partial cross-sectional structure of the telescopic rod according to an embodiment of the present invention; Fig.10 Schematic diagram of the internal structure of the telescopic rod according to an embodiment of the present invention.

[0018] The markings in the figure are: 1. Base; 11. Sealing member; 111. Side support rod; 112. Rubber pad; 2. Mounting roller; 21. Driving motor; 3. Clamp; 31. Clamping frame; 32. Telescopic rod; 321. Sleeve rod; 322. Movable rod; 323. Driven gear; 33. Rotating rod; 34. Threaded rod; 35. Limiting collar; 36. First transmission wheel; 37. Second transmission wheel; 371. First gear; 372. Second gear; 373. Micro motor; 374. Connecting rod; 38. Left clamp; 381. Hollow rod; 382. Hollow end plate; 383. Air inlet; 384, exhaust hole; 385, spring; 39, right clamp; 391, fixed end plate; 392, support rod; 4, cleaning part; 41, bracket; 42, roller shaft; 43, cleaning roller; 44, first drive tooth; 45, first motor; 5, drilling part; 51, external frame; 52, screw rod; 53, second motor; 54, moving block; 55, electric telescopic rod; 56, drilling device; 57, second transmission rod; 58, third motor; 59, second drive tooth; 6, dust suction part; 61, suction pump; 62, connecting pipe; 63, hollow cover. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, a drilling machine tool for exhaust pipe processing includes a base 1, a mounting roller 2 is rotated between the two ends of the base 1, and clamps 3 are respectively arranged around the mounting roller 2. A driving motor 21 for driving the mounting roller 2 to rotate is arranged on one side of the base 1. The base 1 also includes a cleaning part 4 arranged on the top of the base 1, a drilling part 5 arranged on the rear side of the base 1, and a dust suction part 6 located on the lower side of the mounting roller 2; The clamp 3 includes a clamping frame 31 fixed on the mounting roller 2, and telescopic rods 32 are rotatably provided at both ends of the clamping frame 31. Driving components for driving the two sets of telescopic rods 32 to extend and retract are provided at both ends of the clamping frame 31, wherein a left clamping piece 38 is provided at the end of the left telescopic rod 32, and a right clamping piece 39 is provided at the end of the right telescopic rod 32; The left clamping member 38 includes a hollow rod 381 sliding inside one end of the telescopic rod 32, a hollow end plate 382 is fixed to the other end of the hollow rod 381, a spring 385 is connected between the hollow end plate 382 and the telescopic rod 32, an air inlet hole 383 is opened on the inner circumference of the hollow end plate 382, ​​a flexible rubber is pasted on the clamping surface of the hollow end plate 382 and the workpiece, and an exhaust hole 384 connected to the inside thereof is opened; the right clamping member 39 includes a fixed end plate 391 fixed to the end of the telescopic rod 32, and a support rod 392 is fixed to the fixed end plate 391; The telescopic rod 32 includes a sleeve rod 321 rotatably set with the clamping frame 31, and a movable rod 322 is slidably sleeved inside it, and a driven gear 323 is fixed on the surface of the movable rod 322. A penetrating fine hole is opened inside the movable rod 322, and the hollow rod 381 slides with the inner wall of the fine hole; two groups of sealing parts 11 for sealing the ends of the two groups of sleeve rods 321 are symmetrically arranged on the front side of the base 1.

[0022] In this embodiment, the front side of the base 1 is a worker's operating station, and the operator clamps the exhaust pipe workpiece in the fixture 3 located on the operating station side; specifically, the operator first sets the exhaust pipe workpiece on the support rod 392 on the fixed end plate 391, starts the driving assembly to extend the movable rod 322 of the telescopic rods 32 on both sides, so that the hollow end plate 382 of the left clamping member 38 and the fixed end plate 391 of the right clamping member 39 are tightly attached to the two ends of the workpiece to clamp the workpiece, and at the same time, the spring 385 is compressed and deformed to store energy; after clamping, the driving motor 21 drives the installation roller 2 to rotate, driving the clamped workpiece to pass through the rotating brush of the cleaning part 4 in turn to clean the surface impurities, the drilling part 5 to complete the preset hole processing, and the dust suction part 6 to add suction. When the workpiece is processed and rotated to the operating station, the drive assembly controls the left movable rod 322 to retract, and the compressed air in the sleeve rod 321 pushes the hollow rod 381 and the spring 385 to release the stored energy to keep the hollow end plate 382 in contact with the workpiece. At the same time, the compressed air enters the hollow end plate 382 through the air inlet hole 383 and is discharged from the exhaust hole 384, forming an air flow buffer layer to release the vacuum adsorption and adhesion between the contact surface of the hollow end plate 382 and the workpiece. At this time, the hollow end plate 382 is automatically separated from the workpiece, and the workpiece stays stably on the support rod 392. The operator can safely take out the workpiece and cyclically load a new workpiece to achieve continuous processing, effectively solve the problem of workpiece adhesion caused by negative pressure adsorption, and ensure the stability of picking up.

[0023] Preferably, the driving assembly includes a rotating rod 33 rotating with the clamping frame 31, a threaded rod 34 is screwed inside the rotating rod 33, a limiting collar 35 is fixed at the other end of the threaded rod 34, and the limiting collar 35 is rotatably sleeved on the outer surface of the movable rod 322; a driving unit for driving the rotating rod 33 to rotate is provided on the clamping frame 31; The driving unit includes two groups of first transmission wheels 36 and second transmission wheels 37 symmetrically arranged on both sides of the clamping frame 31, wherein the first transmission wheel 36 is fixed to the rotating rod 33, and the first transmission wheel 36 and the second transmission wheel 37 on the same side are sleeved with a transmission belt for transmission, and the second transmission wheel 37 located on the left side is provided with a first gear 371, and a second gear 372 meshing with the first gear 371 is also rotatably provided on the left side of the clamping frame 31, and a micro motor 373 for driving the second gear 372 to rotate is provided on the inner side of the clamping frame 31, and a connecting rod 374 is rotated between the clamping frames 31, and the two ends of the connecting rod 374 are respectively connected to the two groups of second transmission wheels 37.

[0024] In this embodiment, when the clamping distance needs to be adjusted, the micromotor 373 drives the second gear 372 to rotate, and drives the left second transmission wheel 37 to rotate through the meshing of the first gear 371, and the first transmission wheel 36 on the same side is linked by the transmission belt, so that the left rotating rod 33 rotates synchronously; the threaded cooperation between the rotating rod 33 and the threaded rod 34 pushes the limiting ring 35 to move axially, and then drives the movable rod 322 to slide in the sleeve rod 321 to adjust the position of the left clamping member 38; at the same time, the connecting rod 374 transmits the rotation of the left second transmission wheel 37 to the right second transmission wheel 37, so that the right rotating rod 33 rotates synchronously and drives the right threaded rod 34 to move, ensuring that the double-sided telescopic rods 32 are symmetrically telescopic to complete the clamping of the workpiece.

[0025] Preferably, the cleaning part 4 includes two sets of brackets 41, which are respectively fixed to the tops of both ends of the base 1, and a roller 42 is rotated between the two sets of brackets 41, a cleaning roller 43 is sleeved on the roller 42, and soft bristles are arranged on the cleaning roller 43, and a first motor 45 for driving the roller 42 to rotate is arranged on one side of the bracket 41; The roller shaft 42 is also fixedly sleeved with a first driving tooth 44, which can mesh with the driven gear 323; when the first driving tooth 44 meshes with the driven gear 323, the first motor 45 drives the roller shaft 42 to rotate, and the roller shaft 42 drives the cleaning roller 43 and the workpiece to reverse through the first driving tooth 44.

[0026] In this embodiment, when the workpiece moves to the cleaning part 4, the cleaning operation starts, the first motor 45 drives the roller shaft 42 to rotate, driving the cleaning roller 43 fixed thereon to rotate, and the soft bristles perform circumferential cleaning on the surface of the workpiece passing through; at the same time, the first driving teeth 44 on the roller shaft 42 are meshed with the driven gear 323 on the surface of the telescopic rod 32 to form a transmission, so that the cleaning roller 43 and the workpiece produce a reverse rotation motion, and the soft bristles form relative reverse friction with the surface of the workpiece to enhance the impurity stripping effect, and during the cleaning process, the workpiece continues to rotate under the drive of the mounting roller 2, and cooperates with the reverse rotation of the cleaning roller 43 to clean and cover the entire circumference of the workpiece, thereby ensuring that the workpiece surface is clean, improving the subsequent drilling effect of the workpiece, and reducing the wear of the drilling device 56 by impurities.

[0027] Preferably, the drilling part 5 includes an external frame 51 fixed to the rear side of the base 1, a screw 52 is rotated between the inner walls on both sides of the external frame 51, a moving block 54 is screwed on the screw 52, ​​the moving block 54 slides with the external frame 51, an electric telescopic rod 55 is fixed to the side of the moving block 54 away from the external frame 51, a drilling device 56 is fixed to the other end of the electric telescopic rod 55, and a second motor 53 for driving the screw 52 to rotate is fixed to the outer side surface of one side of the external frame 51; A second transmission rod 57 is also rotatably provided on the inner wall of one side of the external frame 51, and a second driving tooth 59 is fixed to the other end of the second transmission rod 57. A third motor 58 for driving the second transmission rod 57 to rotate is fixed to the outer side surface of the external frame 51, and the second driving tooth 59 can engage with the driven gear 323. When the second driving tooth 59 engages with the driven gear 323, the third motor 58 drives the telescopic rod 32 to rotate, thereby driving the workpiece clamped by the telescopic rod 32 to rotate, so that different sides of the workpiece face the drilling device 56.

[0028] In this embodiment, when the drilling operation is performed, the second motor 53 drives the screw 52 to rotate, driving the moving block 54 to slide horizontally along the external frame 51, so that the drilling device 56 is positioned to the target processing position of the workpiece; after the electric telescopic rod 55 pushes the drilling device 56 to complete the axial drilling, the third motor 58 starts to drive the second transmission rod 57 to rotate, and engages with the driven gear 323 through the second driving tooth 59, driving the telescopic rod 32 and the clamped workpiece to rotate around the axis, switching the workpiece to another processing surface and aligning it with the drilling device 56, thereby realizing drilling processing at different positions of the same workpiece.

[0029] Preferably, the dust collecting part 6 comprises two groups of connecting pipes 62 respectively arranged on the two sides of the inner wall of the base 1, the other end of the connecting pipe 62 is connected with a hollow cover 63 capable of sealing the sleeve rod 321, a suction pump 61 is arranged on the outer side of one side of the base 1, the air inlet end of the suction pump 61 is connected with the connecting pipe 62, the air outlet end of the suction pump 61 is connected with a dustproof box, one side of the dustproof box is connected with the air outlet end of the air pump, and the other side is provided with an air outlet window, in which a dust filter is arranged; When the workpiece moves to the cleaning section 4, the suction pump 61 starts and forms a negative pressure in the hollow cover 63 through the connecting pipe 62. The suction airflow enters the interior of the workpiece through another set of connecting pipes 62 connected to the external atmosphere. After carrying the dust in the workpiece, it flows through the hollow cover 63 and the connecting pipe 62 on the same side of the suction pump 61 and enters the suction pump 61, and is finally discharged into the dustproof box to achieve solid-gas separation, thereby completing the collection of dust generated by drilling inside the workpiece.

[0030] Preferably, the sealing member 11 includes a side support rod 111 fixed to the front side of the base 1, and a rubber pad 112 is fixed to the other end of the side support rod 111; when the driving motor 21 drives the installation roller 2 to rotate and place a set of clamps 3 holding the workpiece on the front side of the base 1, the two sets of rubber pads 112 are tightly attached to the two ends of the clamping frame 31 and seal the two sets of telescopic rods 32; When the installation roller 2 rotates a group of clamps 3 to the operating station, the rubber pads 112 of the sealing member 11 elastically press the two ends of the clamping frame 31 under the rigid support of the side support rods 111, completely closing the end openings of the sleeve rods 321 of the two groups of telescopic rods 32, so that the workpiece and the interior of the telescopic rods 32 on both sides thereof remain sealed.

[0031] Preferably, a first sliding groove is provided on the inner wall of the sleeve rod 321, and a first sliding block slidably matched with the first sliding groove is fixed on the outer wall of the movable rod 322; a second sliding groove is provided on the inner wall of the movable rod 322, and a second sliding block slidably matched with the second sliding groove is fixed on the outer wall of the hollow rod 381; so that the sleeve rod 321 can drive the movable rod 322 to rotate synchronously when rotating, and drive the hollow rod 381 to rotate synchronously, thereby driving the clamped workpiece to rotate synchronously.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0033] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drilling machine for exhaust pipe processing, comprising a base (1), a mounting roller (2) rotating between the two ends of the base, clamps (3) arranged around the mounting roller (2), a driving motor (21) for driving the mounting roller (2) to rotate arranged on one side of the base (1), characterized in that: It also includes a cleaning portion (4) arranged on the top of the base (1), a drilling portion (5) arranged on the rear side of the base (1), and a dust suction portion (6) located on the lower side of the mounting roller (2); The clamp (3) comprises a clamping frame (31) fixed on the mounting roller (2), telescopic rods (32) are rotatably provided at both ends of the clamping frame (31), and driving components for driving two groups of telescopic rods (32) to extend and retract are provided at both ends of the clamping frame (31), wherein a left clamping piece (38) is provided at the end of the left telescopic rod (32), and a right clamping piece (39) is provided at the end of the right telescopic rod (32); The left clamping member (38) includes a hollow rod (381) sliding inside one end of the telescopic rod (32), a hollow end plate (382) being fixed to the other end of the hollow rod (381), a spring (385) being connected between the hollow end plate (382) and the telescopic rod (32), an air inlet hole (383) being provided on the inner circumference of the hollow end plate (382), and an air outlet hole (384) being provided between the hollow end plate (382) and the workpiece clamping surface; the right clamping member (39) includes a fixed end plate (391) fixed to the end of the telescopic rod (32), and a support rod (392) being fixed to the fixed end plate (391); The telescopic rod (32) comprises a sleeve rod (321) rotatably arranged with the clamping frame (31), a movable rod (322) being slidably sleeved inside the sleeve rod (321), a driven gear (323) being fixed on the surface of the sleeve rod (321), a fine hole penetrating the inside of the movable rod (322), and a hollow rod (381) slidingly sliding on the inner wall of the fine hole; two groups of sealing members (11) for sealing the ends of the two groups of sleeve rods (321) are symmetrically arranged on the front side surface of the base (1).

2. The exhaust pipe drilling machine according to claim 1, characterized in that: The driving assembly comprises a rotating rod (33) that rotates with the clamping frame (31), a threaded rod (34) being screwed inside the rotating rod (33), a limiting collar (35) being fixed at the other end of the threaded rod (34), and the limiting collar (35) being rotatably sleeved on the outer surface of the movable rod (322); and a driving unit for driving the rotating rod (33) to rotate is arranged on the clamping frame (31).

3. The exhaust pipe processing drilling machine according to claim 2, characterized in that: The driving unit comprises two groups of first transmission wheels (36) and second transmission wheels (37) symmetrically arranged on two sides of the clamping frame (31), wherein the first transmission wheel (36) is fixed to the rotating rod (33), and a transmission belt for transmission is sleeved on the first transmission wheel (36) and the second transmission wheel (37) on the same side, and a first gear (371) is arranged on the second transmission wheel (37) located on the left side, and a second gear (372) meshing with the first gear (371) is also rotatably arranged on the left side of the clamping frame (31), and a micro motor (373) for driving the second gear (372) to rotate is arranged inside the clamping frame (31), and a connecting rod (374) is rotatably arranged between the clamping frames (31), and the two ends of the connecting rod (374) are respectively connected to the two groups of second transmission wheels (37).

4. The exhaust pipe processing drilling machine according to claim 1, characterized in that: The cleaning part (4) comprises two groups of brackets (41), the two groups of brackets (41) are respectively fixed to the top of both ends of the base (1), a roller (42) is rotatable between the two groups of brackets (41), a cleaning roller (43) is sleeved on the roller (42), and soft bristles are arranged on the cleaning roller (43), and a first motor (45) for driving the roller (42) to rotate is arranged on the bracket (41) on one side.

5. The exhaust pipe processing drilling machine according to claim 4, characterized in that: The roller shaft (42) is also fixedly sleeved with a first driving tooth (44), which can mesh with the driven gear (323); when the first driving tooth (44) meshes with the driven gear (323), the first motor (45) drives the roller shaft (42) to rotate, and the roller shaft (42) drives the cleaning roller (43) and the workpiece to reverse through the first driving tooth (44).

6. The exhaust pipe drilling machine according to claim 1, characterized in that: The drilling part (5) comprises an external frame (51) fixed to the rear side of the base (1); a screw rod (52) is rotatably provided between the inner walls on both sides of the external frame (51); a moving block (54) is screwed onto the screw rod (52); the moving block (54) slides with the external frame (51); an electric telescopic rod (55) is fixed to a side of the moving block (54) away from the external frame (51); a drilling device (56) is fixed to the other end of the electric telescopic rod (55); and a second motor (53) for driving the screw rod (52) to rotate is fixed to an outer side surface of one side of the external frame (51).

7. The exhaust pipe processing drilling machine according to claim 6, characterized in that: A second transmission rod (57) is also rotatably provided on the inner wall of one side of the external frame (51); a second driving tooth (59) is fixed to the other end of the second transmission rod (57); a third motor (58) for driving the second transmission rod (57) to rotate is fixed to the outer side surface of the external frame (51); the second driving tooth (59) can mesh with the driven gear (323); when the second driving tooth (59) meshes with the driven gear (323), the third motor (58) drives the telescopic rod (32) to rotate, thereby driving the workpiece clamped by the telescopic rod (32) to rotate, so that different sides of the workpiece face the drilling device (56).

8. The exhaust pipe drilling machine according to claim 1, characterized in that: The dust suction part (6) comprises two groups of connecting pipes (62) respectively arranged on the two side surfaces of the inner wall of the base (1); the other end of the connecting pipe (62) is connected to a hollow cover (63) capable of sealing the sleeve rod (321); a suction pump (61) is arranged on the outer side surface of one side of the base (1); the air inlet end of the suction pump (61) is connected to the connecting pipe (62); and the air outlet end of the suction pump (61) is connected to a dustproof box.

9. The exhaust pipe processing drilling machine according to claim 1, characterized in that: The sealing member (11) comprises a side support rod (111) fixed to the front side of the base (1), and a rubber pad (112) is fixed to the other end of the side support rod (111); when the driving motor (21) drives the mounting roller (2) to rotate and positions a set of clamps (3) holding the workpiece on the front side of the base (1), the two sets of rubber pads (112) are tightly attached to the two ends of the clamping frame (31) and seal the two sets of telescopic rods (32).

10. The exhaust pipe processing drilling machine according to claim 1, characterized in that: The inner wall of the sleeve rod (321) is provided with a first sliding groove, and the outer wall of the movable rod (322) is fixed with a first sliding block that slidably cooperates with the first sliding groove; the inner wall of the movable rod (322) is provided with a second sliding groove, and the outer wall of the hollow rod (381) is fixed with a second sliding block that slidably cooperates with the second sliding groove.

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