A punching device for the pump shaft of a vacuum pump

Abstract

The present invention relates to the field of vacuum pump devices, and particularly to a drilling device for a vacuum pump pump shaft, which comprises a bottom plate. On both sides of the upper end of the bottom plate, vertical plates are symmetrically fixed. On the vertical plates, support shafts rotatably connected to the vertical plates are arranged. On the support shafts, support plates are fixed. Above the support plates, fixing plates cooperatively assembled with the support plates are arranged. One of the support shafts is fixed to the output end of a turning motor. Above the bottom plate, a plurality of sliding rods and lead screws are also arranged. The lead screw is driven to rotate by a moving motor. Above the bottom plate, a sliding table is also arranged. The lead screw passes through the sliding table and is in threaded connection with the sliding table. The sliding rod passes through the sliding table and is in sliding connection with the sliding table. A connecting plate is fixed to one side of the sliding table. On one side of the connecting plate, a sliding plate is also arranged. The sliding plate is driven to move by a transverse movement motor. Through this device, blind hole drilling operation on the pump shaft can be realized, and the drilling bit can be prevented from breaking.

Description

Technical Field

[0001] The present invention relates to the field of vacuum pump devices, and in particular, to a drilling device for a vacuum pump shaft. Background Art

[0002] A vacuum pump refers to a device or equipment that uses mechanical, physical, chemical, or physical-chemical methods to evacuate the container to be pumped to obtain a vacuum. Generally speaking, a vacuum pump is a device that improves, generates, and maintains a vacuum in a closed space by various methods. According to the working principle of the vacuum pump, the vacuum pump can basically be divided into two types, namely, gas capture pumps and gas transfer pumps. It is widely used in industries such as metallurgy, chemical industry, food, and electronic coating.

[0003] Refrigerating oil is stored at the bottom inside the vacuum pump housing. A main oil passage that penetrates up and down is provided inside the pump shaft. During the operation of the vacuum pump, the refrigerating oil reaches the positions of various components inside the vacuum pump through the main oil passage inside the pump shaft and the blind holes communicating with the main oil passage, so as to achieve the purpose of lubricating the components. The starting performance and service life of the vacuum pump are closely related to the lubrication effect. The more sufficient the lubrication, the easier it is for the vacuum pump to start, and the longer the service life of the vacuum pump. When the pump shaft is produced, a blind hole operation is performed on the pump shaft through a drilling device. In order to facilitate the discharge of the refrigerating oil from the top of each blind hole and the main oil passage, the size requirement of the blind hole is small, that is, a blind hole operation is performed on the pump shaft through an ultra-fine drill bit. When the high-speed rotating ultra-fine drill bit contacts the pump shaft, since the pump shaft is a cylindrical structure and the contact position between the drill bit and the pump shaft is a curved surface, due to the small diameter of the ultra-fine drill bit, the ultra-fine drill bit is likely to break when contacting the pump shaft, seriously affecting the processing efficiency of the pump shaft.

[0004] The present invention is specifically studied and proposed in view of the deficiencies of the prior art. Summary of the Invention

[0005] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a drilling device for a vacuum pump shaft.

[0006] The present invention can be realized by the following technical solutions:

[0007] The present invention discloses a drilling device for a vacuum pump pump shaft, which includes a bottom plate. On both sides of the upper end of the bottom plate, vertical plates are symmetrically fixed. On the vertical plates, support shafts rotatably connected to the vertical plates are arranged. On the support shafts, support plates are fixed. Above the support plates, fixing plates cooperatively assembled with the support plates are arranged. One of the support shafts is fixed to the output end of a turning motor. Above the bottom plate, a plurality of sliding rods and lead screws are further arranged. The lead screw is driven to rotate by a moving motor. Above the bottom plate, a sliding table is further arranged. The lead screw passes through the sliding table and is threadedly connected to the sliding table. The sliding rod passes through the sliding table and is slidably connected to the sliding table. One side of the sliding table is fixed with a connecting plate. On one side of the connecting plate, a sliding plate is further arranged. The sliding plate is driven to move by a lateral movement motor. On the sliding plate, a driven wheel rotatably connected to the sliding plate is arranged. On the driven wheel, a positioning drill bit is fixed. The driven wheel is driven to rotate by a positioning motor. On the positioning drill bit, a chute penetrating the positioning drill bit is arranged. In the chute, a slider slidably connected to the chute is arranged. The slider fixes a drilling bit through a first one-way bearing. On the sliding plate, a cylinder is further fixed. The end of the piston rod of the cylinder is fixed with a mounting plate. On the mounting plate, a drilling motor is fixed. The rotating shaft of the drilling motor is connected to the aforementioned drilling bit through a second one-way bearing.Place both ends of the pump shaft to be drilled on two support plates, cover the upper end of the pump shaft with the fixing plate, and after the support rods on the support blocks pass through the corresponding fixing blocks, fix nuts on the support rods above the fixing blocks. The fixing plate and the support plate are fixed by screwing the nuts onto the support rods. After the pump shaft is fixed, the moving motor drives the lead screw to rotate. Since the lead screw is threadedly connected to the slide, when the lead screw rotates, the slide moves. When the positioning drill bit on the slide reaches the specified position on the pump shaft, the lead screw stops rotating. The transverse movement motor drives the screw to rotate. Since the screw is threadedly connected to the threaded tube on the slide plate, when the screw rotates, the slide plate moves towards the pump shaft. And the positioning motor drives the positioning drill bit to rotate. Since there is a slider inside the positioning drill bit, the slider is slidably connected to the chute of the positioning drill bit, and the slider is fixed to the drilling bit through a first one-way bearing. When the positioning drill bit rotates, the drilling bit does not rotate relative to the slider, and the drilling bit is fixed to the rotating shaft of the drilling motor through a second one-way bearing. When the positioning drill bit rotates, the drilling bit rotates with the positioning drill bit, and the rotating shaft of the drilling motor does not rotate with the drilling bit. The high-speed rotating drilling bit and positioning drill bit move closer to the pump shaft. After the drilling bit and the positioning drill bit contact the pump shaft, drilling operations are performed on the pump shaft. When a hole is drilled in the pump shaft by the drilling bit and the positioning drill bit, the positioning motor stops, and the transverse movement motor also stops. The drilling motor drives the rotating shaft to rotate. Since the rotating direction of the rotating shaft is opposite to the original rotating direction of the positioning drill bit, the rotating shaft can be fixed to the drilling bit, and the drilling bit rotates inside the positioning drill bit. And the air cylinder is started, and the piston rod of the air cylinder extends. The mounting plate moves closer to the pump shaft. The drilling motor moves with the mounting plate. The high-speed rotating drilling bit moves with the mounting plate. The high-speed rotating drilling bit continues to perform blind hole drilling operations on the pump shaft. After the drilling bit extends into the main oil passage position on the pump shaft, the air cylinder is started again, and the piston rod of the air cylinder shortens. The drilling bit returns to the initial position. The transverse movement motor drives the screw to rotate in the reverse direction, and the slide plate returns to the initial position. The positioning drill bit is separated from the pump shaft. The moving motor drives the lead screw to rotate again, and the slide reaches the next position to be drilled with a blind hole. And the support shaft is rotated by the flipping motor, and the pump shaft rotates by a certain angle with the support shaft. The pump shaft is drilled again by the drilling bit. Through this device, blind hole drilling operations can be performed on the pump shaft, and blind hole drilling operations can be performed at any position on the pump shaft. When drilling a blind hole, a sinking hole is first drilled on the pump shaft by the thicker positioning drill bit and the drilling bit, and then the pump shaft is drilled through by the high-speed rotating drilling bit. That is, the drilling bit is fixed to the pump shaft together with the positioning drill bit, which can effectively prevent the ultra-fine drilling bit from breaking. And the drilling bit is arranged inside the positioning drill bit, and the positioning drill bit supports the drilling bit, further preventing the drilling bit from breaking.

[0008] Preferably, support blocks are symmetrically and fixedly arranged on both sides of the upper end of the support plate. Support rods are fixedly arranged on the support blocks. Fixing blocks are symmetrically and fixedly arranged at both ends of the fixing plate. The fixing plate is fixed to the support plate by screwing nuts onto the support rods.

[0009] Preferably, the transverse movement motor is fixed on the connecting plate. A screw rod is fixed to the output end of the transverse movement motor. A threaded tube is fixed at a position corresponding to the screw rod on the sliding plate. The screw rod extends into the threaded tube and is threadedly connected to the threaded tube. Multiple positioning rods are also fixed on the sliding plate. The positioning rods pass through the connecting plate and are slidably connected to the connecting plate.

[0010] Preferably, a driving wheel is fixed to the output end of the positioning motor. The driving wheel is wound around the aforementioned driven wheel through a synchronous belt.

[0011] Preferably, the second one-way bearing includes an outer ring and an inner ring. The inner ring can rotate unidirectionally on the outer ring. The rotating shaft of the punching motor is fixed to the outer ring of the second one-way bearing. The punching drill bit is fixed to the inner ring of the second one-way bearing.

[0012] The present invention has the following advantages compared with the existing technology:

[0013] After a relatively thick positioning drill bit and a punching drill bit first make a sinking hole in the pump shaft, and then the high-speed rotating punching drill bit penetrates the pump shaft. That is, the punching drill bit is fixed to the pump shaft together with the positioning drill bit, which can effectively prevent the ultra-fine punching drill bit from breaking. And the punching drill bit is arranged inside the positioning drill bit, and the positioning drill bit supports the punching drill bit, further preventing the punching drill bit from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes in detail the specific embodiments of the present invention with reference to the drawings, where:

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a top view of the present invention;

[0017] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0018] Figure 4 is Figure 3 an enlarged view at B in

[0019] Figure 5 is Figure 1 an enlarged view at C in

[0020] In the figure: 1, bottom plate; 2, vertical plate; 3, support shaft; 4, support plate; 5, support block; 6, support rod; 7, fixing plate; 8, fixing block; 9, nut; 10, pump shaft; 11, turning motor; 12, slide bar; 13, lead screw; 14, moving motor; 15, slide table; 16, connecting plate; 17, transverse movement motor; 18, screw rod; 19, slide plate; 20, threaded pipe; 21, driven wheel; 22, positioning drill bit; 23, driving wheel; 24, positioning motor; 25, synchronous belt; 26, chute; 27, slider; 28, one-way bearing; 29, drilling bit; 30, drilling motor; 31, air cylinder; 32, mounting plate; 33, positioning rod; Detailed implementation mode

[0021] The following makes a detailed description of the implementation mode of the present invention in conjunction with the attached drawings:

[0022] As Figures 1 to 5As shown in the figure, the present invention discloses a drilling device for a vacuum pump pump shaft, which includes a bottom plate 1. On both sides of the upper end of the bottom plate 1, vertical plates 2 are symmetrically fixed. On the vertical plates 2, support shafts 3 rotatably connected to the vertical plates 2 are provided. On the support shafts 3, support plates 4 are fixed. Above the support plates 4, fixing plates 7 assembled in cooperation with the support plates 4 are provided. One of the support shafts 3 is fixed to the output end of a turning motor 11. Above the bottom plate 1, a plurality of slide rods 12 and lead screws 13 are also provided. The lead screw 13 is driven to rotate by a moving motor 14. Above the bottom plate 1, a slide table 15 is also provided. The lead screw 13 passes through the slide table 15 and is threadedly connected to the slide table 15. The slide rod 12 passes through the slide table 15 and is slidably connected to the slide table 15. On one side of the slide table 15, a connecting plate 16 is fixed. On one side of the connecting plate 16, a slide plate 19 is also provided. The slide plate 19 is driven to move by a transverse movement motor 17. On the slide plate 19, a driven wheel 21 rotatably connected to the slide plate 19 is provided. On the driven wheel 21, a positioning drill bit 22 is fixed. The driven wheel 21 is driven to rotate by a positioning motor 24. On the positioning drill bit 22, a chute 26 penetrating the positioning drill bit 22 is provided. In the chute 26, a slider 27 slidably connected to the chute 26 is provided. The slider 27 is fixed to a drilling bit 29 through a first one-way bearing 28. On the slide plate 19, a cylinder 31 is also fixed. The end of the piston rod of the cylinder 31 is fixed to a mounting plate 32. On the mounting plate 32, a drilling motor 30 is fixed. The rotating shaft of the drilling motor 30 is connected to the drilling bit 29 through a second one-way bearing 28. Place both ends of the pump shaft 10 to be drilled on the two support plates 4. Cover the fixing plate 7 on the upper end of the pump shaft 10. And after the support rod 6 on the support block 5 passes through the corresponding fixing block 8, fix a nut 9 on the support rod 6 above the fixing block 8. Assemble the fixing plate 7 and the support plate 4 by screwing the nut 9 and the support rod 6. After the pump shaft 10 is fixed, the moving motor 14 drives the lead screw 13 to rotate. Since the lead screw 13 is threadedly connected to the slide table 15, when the lead screw 13 rotates, the slide table 15 moves. After the positioning drill bit 22 on the slide table 15 reaches the designated position on the pump shaft 10, the lead screw 13 stops rotating. The transverse movement motor 17 drives the screw rod 18 to rotate. Since the screw rod 18 is threadedly connected to the threaded tube 20 on the slide plate 19, when the screw rod 18 rotates, the slide plate 19 moves towards the pump shaft 10. And drive the positioning drill bit 22 to rotate through the positioning motor 24. Since there is a slider 27 in the positioning drill bit 22, the slider 27 is slidably connected to the chute 26 of the positioning drill bit 22, and the slider 27 is fixed to the drilling bit 29 through a first one-way bearing 28. When the positioning drill bit 22 rotates, the drilling bit 29 and the slider 27 do not rotate relative to each other. And the drilling bit 29 is fixed to the rotating shaft of the drilling motor 30 through a second one-way bearing 28. When the positioning drill bit 22 rotates, the drilling bit 29 rotates with the positioning drill bit 22, and the rotating shaft of the drilling motor 30 does not rotate with the drilling bit 29. The high-speed rotating drilling bit 29 and positioning drill bit 22 move close to the pump shaft 10. After the drilling bit 29 and the positioning drill bit 22 contact the pump shaft 10, drilling operation is performed on the pump shaft 10.After the drilling bit 29 and the positioning bit 22 drill a hole in the pump shaft 10, the positioning motor 24 stops, and the transverse movement motor 17 also stops. The drilling motor 30 drives the rotating shaft to rotate. Since the rotating direction of the rotating shaft is opposite to the rotating direction of the original positioning bit 22, the rotating shaft can be fixed to the drilling bit 29, and the drilling bit 29 rotates within the positioning bit 22. Then the cylinder 31 is started, and the piston rod of the cylinder 31 extends, and the mounting plate 32 moves closer to the pump shaft 10. The drilling motor 30 moves with the mounting plate 32, and the high-speed rotating drilling bit 29 moves with the mounting plate 32. The high-speed rotating drilling bit 29 continues to perform the operation of drilling a blind hole in the pump shaft 10. After the drilling bit 29 extends into the position of the main oil passage on the pump shaft 10, the cylinder 31 is started again, and the piston rod on the cylinder 31 shortens, and the drilling bit 29 returns to the initial position. The transverse movement motor 17 drives the screw rod 18 to rotate in the reverse direction, and the slide plate 19 returns to the initial position. The positioning bit 22 is separated from the pump shaft 10. By driving the screw rod 13 to rotate again through the movement motor 14, the slide table 15 reaches the position of the next blind hole to be drilled again. And by driving the support shaft 3 to rotate through the flipping motor 11, the pump shaft 10 rotates by a certain angle along with the support shaft 3, and the pump shaft 10 is drilled again through the drilling bit 29. Through this device, the operation of drilling blind holes on the pump shaft 10 can be realized, and the operation of drilling blind holes at any position on the pump shaft 10 can be realized. When drilling a blind hole, after a sinking hole is first drilled on the pump shaft 10 by the relatively thick positioning bit 22 and the drilling bit 29, the pump shaft 10 is drilled through by the high-speed rotating drilling bit 29. That is, the drilling bit 29 is fixed to the pump shaft 10 together with the positioning bit 22, which can effectively prevent the ultra-fine drilling bit 29 from breaking. And the drilling bit 29 is arranged within the positioning bit 22, and the positioning bit 22 supports the drilling bit 29, further preventing the drilling bit 29 from breaking.

[0023] Wherein, support blocks 5 are symmetrically and fixedly arranged on both sides of the upper end of the support plate 4, and support rods 6 are fixedly arranged on the support blocks 5. Fixing blocks 8 are symmetrically and fixedly arranged at both ends of the fixing plate 7. The fixing plate 7 is fixedly assembled with the support plate 4 through a nut 9 after being threadedly assembled with the support rod 6.

[0024] Wherein, the transverse movement motor 17 is fixed on the connecting plate 16. A screw rod 18 is fixed at the output end of the transverse movement motor 17. A threaded tube 20 is fixed at the corresponding position of the slide plate 19 to the screw rod 18. The screw rod 18 extends into the threaded tube 20 and is threadedly connected with the threaded tube 20. A plurality of positioning rods 33 are also fixed on the slide plate 19. The positioning rods 33 pass through the connecting plate 16 and are slidably connected with the connecting plate 16.

[0025] Wherein, a driving wheel 23 is fixed at the output end of the positioning motor 24. The driving wheel 23 is wound around a driven wheel 21 through a synchronous belt 25.

[0026] Among them, the second one-way bearing 28 includes an outer ring and an inner ring. The inner ring can rotate unidirectionally on the outer ring. The rotating shaft of the punching motor 30 is fixed to the outer ring of the second one-way bearing 28, and the punching drill bit 29 is fixed to the inner ring of the second one-way bearing 28.

[0027] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, various changes, modifications, substitutions, and variations can be made to these embodiments, and these changes, modifications, substitutions, and variations should also be regarded as the protection scope of the present invention.

Claims

1. A punching device for the pump shaft of a vacuum pump, comprising a bottom plate, characterized in that: On both sides of the upper end of the bottom plate, vertical plates are symmetrically fixed. On the vertical plates, support shafts rotatably connected to the vertical plates are arranged. On the support shafts, support plates are fixed. Above the support plates, fixing plates assembled in cooperation with the support plates are arranged. One of the support shafts is fixed to the output end of a turning motor. Above the bottom plate, a plurality of slide rods and lead screws are also arranged. The lead screw is driven to rotate by a moving motor. Above the bottom plate, a slide table is also arranged. The lead screw passes through the slide table and is threadedly connected to the slide table. The slide rod passes through the slide table and is slidably connected to the slide table. One side of the slide table is fixed with a connecting plate. On one side of the connecting plate, a slide plate is also arranged. The slide plate is driven to move by a lateral movement motor. On the slide plate, a driven wheel rotatably connected to the slide plate is arranged. On the driven wheel, a positioning drill bit is fixed. The driven wheel is driven to rotate by a positioning motor. On the positioning drill bit, a chute penetrating the positioning drill bit is arranged. In the chute, a slider slidably connected to the chute is arranged. The slider fixes a punching drill bit through a first one-way bearing. On the slide plate, a cylinder is also fixed. The end of the piston rod of the cylinder is fixed with a mounting plate. On the mounting plate, a punching motor is fixed. The rotating shaft of the punching motor is connected to the aforementioned punching drill bit through a second one-way bearing. On both sides of the upper end of the support plate, support blocks are symmetrically fixed. On the support blocks, support rods are fixed. At both ends of the fixing plate, fixing blocks are symmetrically fixed. The fixing plate is threadedly assembled with the support rod through a nut and then fixed to the support plate. The lateral movement motor is fixed on the connecting plate. The output end of the lateral movement motor is fixed with a screw rod. At the position corresponding to the screw rod on the slide plate, a threaded tube is fixed. The screw rod extends into the threaded tube and is threadedly connected to the threaded tube. On the slide plate, a plurality of positioning rods are also fixed. The positioning rods pass through the connecting plate and are slidably connected to the connecting plate.

2. The punching device for the pump shaft of a vacuum pump according to claim 1, characterized in that: The output end of the positioning motor is fixed with a driving wheel, and the driving wheel is wound with the aforementioned driven wheel through a synchronous belt.

3. The punching device for the pump shaft of a vacuum pump according to claim 1, characterized in that: The second one-way bearing includes an outer ring and an inner ring. The inner ring can rotate unidirectionally on the outer ring. The rotating shaft of the punching motor is fixed to the outer ring of the second one-way bearing, and the punching drill bit is fixed to the inner ring of the second one-way bearing.

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