Pump hub drilling machine

Abstract

The utility model relates to the technical field of pump wheel hub processing, in particular to a pump wheel hub drilling machine, which can realize self-centering positioning of the wheel hub. When the wheel hub is repeatedly placed, its axis after placement always remains unchanged, thereby realizing improved drilling accuracy; it comprises a workbench, a bottom box, a plurality of legs, an inspection door, a drilling machine, two support rods, a top plate, a lifting mechanism, a position adjustment mechanism, a driving assembly, a clamping assembly and a feeding assembly, the bottom end of the workbench is fixedly installed with the bottom box, the four corners of the bottom of the bottom box are respectively fixedly installed with support legs, the front end of the bottom box is hinged with an inspection door, the two support rods are fixedly installed at the top rear end of the workbench, the top plate is installed at the top end of the support rod, the lifting mechanism is installed on the top plate, the position adjustment mechanism is installed on the lifting mechanism, the drilling machine is installed at the output end of the position adjustment mechanism, the clamping assembly is installed at the left and right ends of the top of the workbench, and the driving assembly is installed inside the bottom box.

Description

Technical Field

[0001] The utility model relates to the technical field of pump hub processing, in particular to a pump hub drilling machine. Background Art

[0002] The pump hub is one of the key components of the pump. It connects the pump shaft and the impeller, and transmits mechanical energy to make the pump work. In the water pump, the pump hub can withstand the rotational force of the water pump, and drive the impeller to rotate through structures such as bearings, so as to achieve the function of sucking in and squeezing out the liquid. The pump hub can also withstand the working load of the pump, so that the entire pump body reaches a balanced operating state. The hub is divided into two types: rigid hub and elastic hub. The rigid hub is usually used to transport relatively pure liquids, while the elastic hub is usually used to transport media with more particles and easy to clog. In the process of processing the pump hub, it is necessary to drill holes in the pump hub. The prior art publication number CN207914635U discloses a fixed punching device for an automobile aluminum alloy wheel hub, including a fixed base plate, and support columns are fixedly arranged at both ends of the bottom of the fixed base plate, and the lower end of the support column is fixedly arranged with an anti-slip sleeve. However, the fixing device is a method of clamping and fixing the automobile wheel hub by means of two air cylinders. In the prior art, the air cylinder mainly relies on the air source to generate pressure to drive the piston rod of the air cylinder to move. This causes the movement to be inconsistent when the air pressure of the two cylinders is unstable, which can easily lead to inconsistent clamping force, positioning deviation, and thus reduced drilling accuracy. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a pump hub drilling machine which can realize self-centering positioning of the hub, and when the hub is repeatedly placed, its axis after placement always remains unchanged, thereby realizing improved drilling accuracy.

[0004] The utility model discloses a pump hub drilling machine, comprising a workbench, a bottom box, a plurality of legs, an inspection door, a drilling machine, two support rods, a top plate, a lifting mechanism, a position adjustment mechanism, a driving assembly, a clamping assembly and a feeding assembly. The bottom end of the workbench is fixedly mounted with the bottom box, the four bottom corners of the bottom box are respectively fixedly mounted with support legs, the front end of the bottom box is hinged with an inspection door, the two support rods are fixedly mounted on the top rear end of the workbench, the top plate is mounted on the top end of the support rods, the lifting mechanism is mounted on the top plate, the position adjustment mechanism is mounted on the lifting mechanism, the drilling machine is mounted on the output end of the position adjustment mechanism, the clamping assembly is mounted on the left and right ends of the top of the workbench, the driving assembly is fixedly mounted with the bottom box ... lifting mechanism, the drilling machine is mounted on the output end of the position adjustment mechanism, the clamping assembly is mounted on the left and right ends of the top of the workbench, the driving assembly is fixedly mounted with the bottom box, the lifting mechanism is fixedly mounted on the top rear end of the workbench, the lifting mechanism is mounted on the top plate, the position adjustment mechanism is mounted on the lifting mechanism, the drilling machine is mounted on the output end of the position adjustment mechanism, the clamping assembly is mounted on the left and right ends of the top of the workbench, the driving assembly is fixedly mounted with the bottom box, the lifting mechanism is fixedly mounted with the top box, the lifting mechanism is fixedly mounted on the top rear end of the workbench, the lifting mechanism is fixedly mounted on the top rear end of the workbench, The assembly is installed inside the bottom box, the clamping assembly is connected to the output end of the lifting mechanism through the driving assembly, and the loading assembly is installed on the rear side wall of the workbench; the pump hub is pushed to the top of the workbench through the loading assembly, and the lifting mechanism cooperates with the position adjustment mechanism to move downward to adjust the position of the drilling machine. When the lifting mechanism moves downward, the driving assembly drives the inner wall of the clamping assembly to synchronously press against the circumference of the hub to achieve self-centering positioning of the hub. When the hub is repeatedly placed, its axis after placement remains unchanged, thereby improving the positioning accuracy during drilling, achieving improved drilling accuracy, and no additional driving equipment is required, saving costs.

[0005] Preferably, the lifting mechanism includes a transmission, a driving motor, a threaded rod, a movable beam and a connecting arm. The transmission is fixedly mounted on the top of the top plate, the input end of the transmission is connected to the output end of the driving motor, a support plate is connected between the lower parts of the two support rods, the output end of the transmission passes through the top of the top plate and is connected to the threaded rod, the threaded rod is rotatably mounted on the top of the support plate, the middle part of the movable beam is screwed on the outer wall of the threaded rod, and the movable beam is slidably mounted between the two support rods, and the middle part of the front end of the movable beam is fixedly connected to the connecting arm; starting the driving motor drives the threaded rod to rotate through the transmission, drives the movable beam to move downward, thereby drives the drilling machine to move downward, adjusts the distance between it and the wheel hub, and facilitates drilling.

[0006] Preferably, the position adjustment mechanism includes a cross beam, an adjusting screw, a servo motor, an adjusting seat and an electric telescopic rod. The cross beam is fixedly mounted on the front end of the connecting arm, an adjusting slot is provided at the bottom of the cross beam, the adjusting screw is rotatably mounted in the adjusting slot, the input end of the adjusting screw passes through the adjusting slot and is connected to the output end of the servo motor, the adjusting seat is screwed on the outer wall of the adjusting screw, and the adjusting seat is slidably mounted in the adjusting slot, an electric telescopic rod is fixedly mounted on the bottom end of the adjusting seat, and the telescopic end of the electric telescopic rod is connected to the top of the drilling machine; after the connecting arm drives the cross beam to move downward, the electric telescopic rod and the drilling machine are started, the electric telescopic rod drives the drilling machine to move downward to drill holes in the pump wheel hub, and the servo motor is started to drive the adjusting screw to rotate, so as to adjust the position of the drilling machine, thereby adjusting the drilling position and improving practicality.

[0007] Preferably, the clamping assembly comprises two rotating cylinders, two gear rings, two fixing blocks, multiple telescopic rods, two V-shaped clamping blocks and multiple springs, the two fixing blocks are symmetrically mounted on the left and right ends of the top of the workbench, the rotating cylinder is rotatably mounted on the fixing block, a gear ring is mounted on the outer wall of the rotating cylinder, a screw rod is screwed inside the opposite ends of the two rotating cylinders, a clamp plate is fixedly mounted on the end of the screw rod, a multiple telescopic rod is evenly mounted on the opposite end of the clamp plate, the other end of the telescopic rod is fixedly connected with a V-shaped clamping block, and multiple springs are respectively mounted on the telescopic rod; after the pump wheel hub is placed on the top of the workbench, the driving assembly and the gear ring cooperate to drive the rotating cylinder to rotate, so that the screw rod extends out to push the clamp plates closer to each other, so that the inner wall of the V-shaped clamping block is synchronously pressed against the circumferential surface of the wheel hub, so as to realize self-centering positioning of the pump wheel hub, and when the pump wheel hub is repeatedly placed, its axis center after placement always remains unchanged, thereby improving the positioning accuracy during drilling, thereby realizing the improvement of drilling accuracy, and the telescopic rod and the spring can be used to buffer when the V-shaped clamping block clamps the wheel hub to avoid damage to the outer wall of the wheel hub.

[0008] Preferably, the driving assembly includes two pushing frames, an inverted L-shaped push plate, a T-shaped slide bar, a mounting frame, a driving gear, a sliding guide rail, a spur rack, a pulling seat, two pulling rotating rods, two protective covers and a driving frame. The mounting frame is fixedly installed in the middle of the bottom end of the workbench, and the lower part of the mounting frame is rotatably installed with a driving gear. The left and right ends of the bottom of the movable beam are fixedly connected with the pushing frame, and the pushing frame slides through the supporting plate and the workbench. The bottom end of the pushing frame is fixedly connected to the rear end of the inverted L-shaped push plate, and the inverted L-shaped push plate is slidably installed on the outer wall of the T-shaped slide bar, and the T-shaped slide bar is fixedly installed at the bottom end of the workbench. The front end of the inverted L-shaped push plate is provided with a rack and meshes with the driving gear. The sliding guide rail is installed at the bottom end of the workbench in front of the mounting frame, and a spur rack is slidably installed inside the sliding guide rail, and the spur rack is meshed with the driving gear. The bottom end of the spur rack is fixedly installed with a pulling seat, and the left and right ends of the pulling seat are meshed with the pulling rotating rod. One end is movably connected, and the middle part of the pulling rotating rod is rotatably installed at the bottom of the support rod, and the support rod is installed at the bottom end of the workbench, and the other end of the pulling rotating rod is rotatably connected to the driving frame, and teeth are arranged on the inner wall of one end of the driving frame. Driving openings are opened at the left and right ends of the top of the workbench, and the driving frame passes through the driving openings and meshes with the gear ring. The protective cover is installed on the outside of the driving frame, and the outer end of the rotating drum is rotatably installed on the inner wall of the protective cover through a bearing; when the moving beam moves downward, the pushing frame pushes the inverted L-shaped push plate to slide on the T-shaped sliding rod, and the inverted L-shaped push plate pushes the driving gear to rotate, so that the spur rack moves upward in the sliding guide rail, and the pulling rotating rod is pushed to rotate by the pulling seat, and the driving frame is pulled downward, and the rotating drum is driven to rotate through the gear ring to make the screw rod extend, so as to realize the self-centering positioning of the wheel hub. When the wheel hub is repeatedly placed, its axis after placement always remains unchanged, and there is no need to set up additional driving equipment, thereby saving costs.

[0009] Preferably, the loading assembly includes an extension plate, an electric push rod, a loading push plate and a loading barrel. The extension plate is fixedly mounted on the rear side wall of the workbench, the electric push rod is fixedly mounted on the top rear end of the extension plate, the telescopic end of the electric push rod is fixedly mounted with a loading push plate, the loading barrel is fixedly mounted on the rear side wall of the top plate, and a loading cavity is arranged in the middle of the loading barrel; the pump hub is placed in the loading cavity in the loading barrel, and the pump hub falls on the top of the extension plate under its own gravity, and the electric push rod is started to push the loading push plate forward, and the pump hub at the lower end is pushed forward to perform automatic and continuous loading, thereby reducing the labor intensity of the staff and improving work efficiency.

[0010] Preferably, a rotating groove is opened at the top of the workbench, and an electric turntable is rotatably installed in the rotating groove. The top of the electric turntable is flush with the top of the workbench, and a sunken groove is provided on the top of the electric turntable; the sunken groove is provided on the top of the electric turntable to facilitate the limiting of the pump hub, and the pump hub can be driven to rotate by the electric turntable, which is convenient for processing.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the pump wheel hub is pushed to the top of the workbench through the loading assembly, and moved downward by the lifting mechanism in cooperation with the position adjustment mechanism to adjust the position of the drilling machine; when the lifting mechanism moves downward, the inner wall of the clamping assembly is driven by the driving assembly to synchronously press against the circumference of the wheel hub, thereby realizing self-centering positioning of the wheel hub; when the wheel hub is repeatedly placed, its axis after placement remains unchanged, thereby improving the positioning accuracy during drilling, realizing improved drilling accuracy, and no additional driving equipment is required, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a front structural schematic diagram of the utility model;

[0014] Figure 3 It is a front cross-sectional structural schematic diagram of the utility model;

[0015] Figure 4 It is a left-side cross-sectional structural schematic diagram of the utility model;

[0016] Figure 5 It is a right side cross-sectional structural schematic diagram of the utility model;

[0017] Markings in the attached figure: 1, workbench; 2, bottom box; 3, outrigger; 4, inspection door; 5, drilling machine; 6, electric turntable; 7, support rod; 8, top plate; 9, transmission; 10, drive motor; 11, threaded rod; 12, moving beam; 13, connecting arm; 14, crossbeam; 15, adjustment screw rod; 16, servo motor; 17, adjustment seat; 18, electric telescopic rod; 19, push frame; 20, inverted L-shaped push Plate; 21. T-shaped slide bar; 22. Mounting frame; 23. Driving gear; 24. Sliding guide rail; 25. Spur rack; 26. Pulling seat; 27. Pulling rotating rod; 28. Protective cover; 29. ​​Driving frame; 30. Rotating drum; 31. Gear ring; 32. Fixed block; 33. Telescopic rod; 34. V-shaped clamping block; 35. Spring; 36. Extension plate; 37. Electric push rod; 38. Loading push plate; 39. Loading drum. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0019] Example 1

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a bottom box 2 is fixedly installed at the bottom end of the workbench 1, and legs 3 are fixedly installed at the four corners of the bottom of the bottom box 2. An inspection door 4 is hinged at the front end of the bottom box 2. Two support rods 7 are fixedly installed at the top rear end of the workbench 1, and a top plate 8 is installed at the top of the support rod 7. A rotating groove is opened at the top of the workbench 1, and an electric turntable 6 is rotatably installed in the rotating groove. The top of the electric turntable 6 is flush with the top of the workbench 1, and a sinking groove is provided on the top of the electric turntable 6. A transmission 9 is fixedly installed at the top of the top plate 8, and the input end of the transmission 9 is connected to the output end of the driving motor 10. A support plate is connected between the lower parts of the two support rods 7, and the output end of the transmission 9 is connected to a threaded rod 11 through the top of the top plate 8. The threaded rod 11 is rotatably installed on the top of the support plate. The middle part of the moving beam 12 is screwed on the outer wall of the threaded rod 11, and the moving beam 12 is slidably installed between the two support rods 7. The middle part of the front end of the moving beam 12 is fixedly connected with a connecting arm 1 3. The crossbeam 14 is fixedly mounted on the front end of the connecting arm 13. An adjusting groove is provided at the bottom of the crossbeam 14. An adjusting screw 15 is rotatably mounted in the adjusting groove. The input end of the adjusting screw 15 passes through the adjusting groove and is connected to the output end of the servo motor 16. An adjusting seat 17 is screwed on the outer wall of the adjusting screw 15, and the adjusting seat 17 is slidably mounted in the adjusting groove. An electric telescopic rod 18 is fixedly mounted on the bottom end of the adjusting seat 17. The telescopic end of the electric telescopic rod 18 is connected to the top of the drilling machine 5. Two fixed blocks 32 are symmetrically mounted on the left and right ends of the top of the workbench 1. A rotating drum 30 is rotatably mounted on the fixed blocks 32. A gear ring 31 is mounted on the outer wall of the rotating drum 30. A screw is screwed inside the opposite ends of the two rotating drums 30. A clamp is fixedly mounted on the end of the screw. A plurality of telescopic rods 33 are evenly mounted on the opposite end of the clamp. A V-shaped clamp 34 is fixedly connected to the other end of the telescopic rod 33. A plurality of springs 35 are respectively mounted on the telescopic rod 33.

[0021] A sunken groove is arranged on the top of the electric turntable 6 to facilitate the limiting of the pump hub. The electric turntable 6 can drive the pump hub to rotate, which is convenient for processing. After the pump hub is placed on the top of the workbench 1, the driving assembly cooperates with the gear ring 31 to drive the rotating drum 30 to rotate, so that the screw rod is extended to push the clamping plates closer to each other, so that the inner wall of the V-shaped clamping block 34 is synchronously pressed against the circumference of the hub, so as to realize the self-centering positioning of the pump hub. When the pump hub is repeatedly placed, its axis after placement remains unchanged, thereby improving the positioning accuracy during drilling and realizing the improvement of drilling accuracy. The telescopic rod 33 and the spring 35 can be used to adjust the position of the pump hub in the V The clamp block 34 performs buffering when clamping the wheel hub to avoid damage to the outer wall of the wheel hub. The drive motor 10 is started to drive the threaded rod 11 to rotate through the transmission 9, and the movable beam 12 is driven to move downward, thereby driving the drilling machine 5 to move downward and adjust the distance between the wheel hub to facilitate drilling. After the connecting arm 13 drives the cross beam 14 to move downward, the electric telescopic rod 18 and the drilling machine 5 are started. The electric telescopic rod 18 drives the drilling machine 5 to move downward to drill the pump wheel hub. The servo motor 16 is started to drive the adjusting screw 15 to rotate, which can adjust the position of the drilling machine 5, thereby adjusting the drilling position and improving practicality.

[0022] Example 2

[0023] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, on the basis of Example 1, it also includes a mounting frame 22 fixedly mounted on the middle part of the bottom end of the workbench 1, and a driving gear 23 is rotatably mounted on the lower part of the mounting frame 22. The left and right ends of the bottom of the movable beam 12 are fixedly connected with a pushing frame 19, and the pushing frame 19 slides through the support plate and the workbench 1, and the bottom end of the pushing frame 19 is fixedly connected to the rear end of the inverted L-shaped push plate 20, and the inverted L-shaped push plate 20 is slidably mounted on the outer wall of the T-shaped slide bar 21, and the T-shaped slide bar 21 is fixedly mounted on the bottom end of the workbench 1, and a rack is provided at the front end of the inverted L-shaped push plate 20, and is meshed with the driving gear 23, and a sliding guide rail 24 is mounted on the bottom end of the workbench 1 in front of the mounting frame 22, and a spur rack 25 is slidably mounted inside the sliding guide rail 24, and the spur rack 25 is meshed with the driving gear 23, and a pulling seat 26 is fixedly mounted on the bottom end of the pulling seat 26. The left and right ends of the movable seat 26 are movably connected with one end of the pulling rotating rod 27, the middle part of the pulling rotating rod 27 is rotatably installed at the bottom of the support rod, and the support rod is installed at the bottom end of the workbench 1, and the other end of the pulling rotating rod 27 is rotatably connected with a driving frame 29, and teeth are arranged on the inner wall of one end of the driving frame 29, and driving ports are opened at the left and right ends of the top of the workbench 1, and the driving frame 29 is meshed with the gear ring 31 through the driving port, and the protective cover 28 is covered on the outside of the driving frame 29, and the outer end of the rotating drum 30 is rotatably installed on the inner wall of the protective cover 28 through a bearing, and the extension plate 36 is fixedly installed on the rear side wall of the workbench 1, and the electric push rod 37 is fixedly installed on the top rear end of the extension plate 36, and the telescopic end of the electric push rod 37 is fixedly installed with a feeding push plate 38, and the feeding barrel 39 is fixedly installed on the rear side wall of the top plate 8, and the middle part of the feeding barrel 39 is provided with a feeding cavity;

[0024] When the moving beam 12 moves downward, the pushing frame 19 pushes the inverted L-shaped push plate 20 to slide on the T-shaped slide bar 21, and the inverted L-shaped push plate 20 pushes the driving gear 23 to rotate, so that the spur rack 25 moves upward in the sliding guide rail 24, and the pulling seat 26 pushes the pulling rod 27 to rotate, and the driving frame 29 is pulled to move downward, and the rotating drum 30 is driven to rotate through the gear ring 31 to make the screw rod extend, so as to realize the self-centering positioning of the wheel hub. When the wheel hub is repeatedly placed, its axis after placement always remains unchanged, and no additional driving equipment is required, which saves costs. The pump hub is placed in the unloading cavity in the loading barrel 39, and the pump hub falls on the top of the extension plate 36 under its own gravity. The electric push rod 37 is started to push the loading push plate 38 to move forward, and the pump hub at the lower end is pushed forward, so as to carry out automatic and continuous loading, reduce the labor intensity of the staff, and improve work efficiency.

[0025] like Figures 1 to 5As shown, a pump hub drilling machine of the utility model, when working, puts the pump hub into the unloading cavity in the loading barrel 39, and the pump hub falls on the top of the extension plate 36 under its own gravity, and starts the electric push rod 37 to push the loading push plate 38 to move forward, and push the pump hub at the lower end forward, and a sinking groove is set on the top of the electric turntable 6 to facilitate the limiting of the pump hub, and starts the driving motor 10 to drive the threaded rod 11 to rotate through the transmission 9, and drives the moving beam 12 to move downward, thereby driving the drilling machine 5 to move downward and adjust the distance between it and the hub, and when the moving beam 12 moves downward, it pushes the inverted L-shaped push plate 20 to slide on the T-shaped slide bar 21 through the pushing frame 19, and the inverted L-shaped push plate 2 The driving gear 23 is pushed to rotate, so that the spur rack 25 moves upward in the sliding guide rail 24, and the pull seat 26 pushes the pull rod 27 to rotate, and the driving frame 29 is pulled downward to drive the rotating drum 30 to rotate through the gear ring 31, so that the screw rod extends to push the clamping plates to approach each other, so that the inner wall of the V-shaped clamping block 34 is synchronously pressed against the circumference of the hub, so as to realize the self-centering positioning of the pump hub. After the connecting arm 13 drives the cross beam 14 to move downward, the electric telescopic rod 18 and the drilling machine 5 are started, and the electric telescopic rod 18 drives the drilling machine 5 to move downward to drill the pump hub, and the servo motor 16 is started to drive the adjusting screw rod 15 to rotate, so as to adjust the position of the drilling machine 5, thereby adjusting the drilling position.

[0026] The drilling machine 5, transmission 9, drive motor 10 and servo motor 16 of the pump hub drilling machine of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative work by technicians in this field.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A pump hub drilling machine, characterized in that: The invention comprises a workbench (1), a bottom box (2), a plurality of legs (3), an inspection door (4), a drilling machine (5), two support rods (7), a top plate (8), a lifting mechanism, a position adjustment mechanism, a driving assembly, a clamping assembly and a feeding assembly. The bottom end of the workbench (1) is fixedly mounted with the bottom box (2), the four corners of the bottom of the bottom box (2) are respectively fixedly mounted with the support legs (3), the front end of the bottom box (2) is hingedly connected with the inspection door (4), the two support rods (7) are fixedly mounted at the top rear end of the workbench (1), the top plate (8) is mounted on the top of the support rods (7), the lifting mechanism is mounted on the top plate (8), the position adjustment mechanism is mounted on the lifting mechanism, the drilling machine (5) is mounted on the output end of the position adjustment mechanism, the clamping assembly is mounted on the left and right ends of the top of the workbench (1), the driving assembly is mounted inside the bottom box (2), the clamping assembly is connected to the output end of the lifting mechanism through the driving assembly, and the feeding assembly is mounted on the rear side wall of the workbench (1).

2. A pump hub drilling machine as claimed in claim 1, characterized in that: The lifting mechanism comprises a transmission (9), a driving motor (10), a threaded rod (11), a moving beam (12) and a connecting arm (13); the transmission (9) is fixedly mounted on the top of a top plate (8); the input end of the transmission (9) is connected to the output end of the driving motor (10); a supporting plate is connected between the lower parts of two supporting rods (7); the output end of the transmission (9) passes through the top of the top plate (8) and is connected to the threaded rod (11); the threaded rod (11) is rotatably mounted on the top of the supporting plate; the middle part of the moving beam (12) is screwed on the outer wall of the threaded rod (11); the moving beam (12) is slidably mounted between the two supporting rods (7); and the middle part of the front end of the moving beam (12) is fixedly connected to the connecting arm (13).

3. A pump hub drilling machine as claimed in claim 2, characterized in that: The position adjustment mechanism comprises a crossbeam (14), an adjustment screw rod (15), a servo motor (16), an adjustment seat (17) and an electric telescopic rod (18). The crossbeam (14) is fixedly mounted on the front end of the connecting arm (13). An adjustment slot is provided at the bottom of the crossbeam (14). The adjustment screw rod (15) is rotatably mounted in the adjustment slot. The input end of the adjustment screw rod (15) passes through the adjustment slot and is connected to the output end of the servo motor (16). The adjustment seat (17) is screwed on the outer wall of the adjustment screw rod (15), and the adjustment seat (17) is slidably mounted in the adjustment slot. The bottom end of the adjustment seat (17) is fixedly mounted with the electric telescopic rod (18), and the telescopic end of the electric telescopic rod (18) is connected to the top of the drilling machine (5).

4. A pump hub drilling machine as claimed in claim 1, characterized in that: The clamping assembly comprises two rotating cylinders (30), two toothed rings (31), two fixed blocks (32), a plurality of telescopic rods (33), two V-shaped clamping blocks (34) and a plurality of springs (35). The two fixed blocks (32) are symmetrically mounted on the left and right ends of the top of the workbench (1). The rotating cylinder (30) is rotatably mounted on the fixed blocks (32). The toothed ring (31) is mounted on the outer wall of the rotating cylinder (30). A screw rod is screwed inside the opposite ends of the two rotating cylinders (30). A clamping plate is fixedly mounted on the end of the screw rod. A plurality of telescopic rods (33) are evenly mounted on the opposite end of the clamping plate. The other end of the telescopic rod (33) is fixedly connected to a V-shaped clamping block (34). The plurality of springs (35) are respectively sleeved on the telescopic rod (33).

5. A pump hub drilling machine as claimed in claim 4, characterized in that: The driving assembly comprises two pushing frames (19), an inverted L-shaped pushing plate (20), a T-shaped sliding rod (21), a mounting frame (22), a driving gear (23), a sliding guide rail (24), a spur rack (25), a pulling seat (26), two pulling rotating rods (27), two protective covers (28) and a driving frame (29), wherein the mounting frame (22) is fixedly mounted at the middle of the bottom end of the workbench (1), and the driving gear (23) is rotatably mounted at the lower part of the mounting frame (22). ), the left and right ends of the bottom of the moving beam (12) are fixedly connected with a push frame (19), the push frame (19) slides through the support plate and the workbench (1), the bottom end of the push frame (19) is fixedly connected to the rear end of the inverted L-shaped push plate (20), the inverted L-shaped push plate (20) is slidably mounted on the outer wall of the T-shaped slide bar (21), the T-shaped slide bar (21) is fixedly mounted at the bottom end of the workbench (1), the front end of the inverted L-shaped push plate (20) is provided with a rack and is connected to the driving gear (23) is meshed, the sliding guide rail (24) is installed at the bottom end of the workbench (1) in front of the mounting frame (22), a spur rack (25) is slidably installed inside the sliding guide rail (24), the spur rack (25) is meshed with the driving gear (23), a pulling seat (26) is fixedly installed at the bottom end of the spur rack (25), the left and right ends of the pulling seat (26) are movably connected to one end of the pulling rotating rod (27), and the middle part of the pulling rotating rod (27) is rotatably installed at the bottom of the support rod The support rod is installed at the bottom end of the workbench (1), and the other end of the rotating rod (27) is pulled to be rotatably connected to a driving frame (29). A tooth is arranged on the inner wall of one end of the driving frame (29). The top left and right ends of the workbench (1) are provided with driving ports, and the driving frame (29) passes through the driving ports and meshes with the gear ring (31). The protective cover (28) is covered on the outside of the driving frame (29), and the outer end of the rotating drum (30) is rotatably installed on the inner wall of the protective cover (28) through a bearing.

6. A pump hub drilling machine as claimed in claim 1, characterized in that: The loading assembly comprises an extension plate (36), an electric push rod (37), a loading push plate (38) and a loading barrel (39); the extension plate (36) is fixedly mounted on the rear side wall of the workbench (1); the electric push rod (37) is fixedly mounted on the top rear end of the extension plate (36); the loading push plate (38) is fixedly mounted on the telescopic end of the electric push rod (37); the loading barrel (39) is fixedly mounted on the rear side wall of the top plate (8); and a loading cavity is arranged in the middle of the loading barrel (39).

7. A pump hub drilling machine as claimed in claim 1, characterized in that: The top of the workbench (1) is provided with a rotating groove, and the electric turntable (6) is rotatably installed in the rotating groove. The top of the electric turntable (6) is flush with the top of the workbench (1), and a sunken groove is provided on the top of the electric turntable (6).

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