A precision steel pipe hole opening equipment

Abstract

The present invention relates to the technical field of cutting and drilling machines, specifically to a precision steel pipe drilling equipment, including a drilling machine base, an auxiliary positioning component and a cutting positioning component. The upper end of the drilling machine base is horizontally provided with a clamping support through a clamping component, and the switching mounting seat with the auxiliary positioning component slides horizontally, so that the rotation-controlled drilling drill bit contacts the steel pipe to be processed. Before the drilling drill bit is about to contact the steel pipe to be processed, the auxiliary positioning component is used to auxiliary support the part of the drilling drill bit away from the rotating power source, so as to avoid the deformation of the drilling drill bit when contacting the steel pipe to be processed and the influence on the drilling accuracy. At the same time, the drilling drill bit can be subjected to chip blowing and heat dissipation treatment during the drilling operation, so as to further improve the precision and reliability of the drilling. In addition, with the cooperation of the cutting positioning component, the end of the steel pipe to be processed can be processed and the position information of the initial drilling can be accurately positioned, so as to achieve the stability of the precision drilling processing of the steel pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting and drilling machine tools, in particular to a precision steel pipe drilling device. Background Art

[0002] Steel pipe drilling refers to the process of forming holes of a certain shape and size on the wall of a steel pipe through various processing methods. When drilling holes in steel pipes that require higher precision, better drilling positioning operations are required.

[0003] The invention of the existing publication number CN117943581A discloses a steel pipe hole opening machine, including a workbench, a mounting plate fixedly installed on the upper side of the workbench, two arc-shaped clamping plates are arranged on the workbench, the arc-shaped clamping plate at the lower side is fixedly connected to the mounting plate, two telescopic devices are fixedly installed on the upper side of the workbench, and a lifting plate is fixedly installed on the upper end of the output shaft of the two telescopic devices. The first hole opened is aligned with one of the moving columns, and then the moving column is entered into the opened hole, so that the gear can be rotated by rotating one of the rotating rods, so that the movable belt can be rotated and moved by the chain, thereby driving the moving column to move, so that the movable column can be driven to move. The steel pipe moves to the right, and as the drilling rig is lifted and lowered to drill holes back and forth, the staff can intermittently rotate the rotating rod to drive the steel pipe to move to the left. This can control the hole spacing while avoiding the steel pipe rotating back and forth, which causes the holes to be misaligned. The above scheme can achieve the alignment adjustment of the associated holes when drilling multiple holes in the steel pipe through the cooperation between various mechanisms. However, the drill bit of the existing steel pipe drilling equipment is relatively long when drilling. When the drilled hole is small, the supporting strength of the drill bit is relatively weak due to the influence of its own material. When it initially contacts the steel pipe, the drill bit is prone to slight deviation. At this time, the drilling accuracy may be poor, and the existing steel pipe continuous drilling equipment has relatively single functions. Summary of the Invention

[0004] The purpose of the present invention is to provide a precision steel pipe hole opening device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a precision steel pipe hole-making device, comprising:

[0006] A drilling machine tool base, wherein the upper end of the drilling machine tool base is horizontally provided with a clamping support through a clamping assembly, the clamping assembly includes two clamping supports, the drilling machine tool base is located below the two clamping supports and is horizontally movable with a switching mounting seat, and a drilling assembly is provided on one side of the upper end of the switching mounting seat, and the drilling assembly includes a drilling transmission box and a drilling drill bit;

[0007] An auxiliary positioning assembly is provided between the steel pipe to be processed and the drilling transmission box. The auxiliary positioning assembly includes an auxiliary matching seat and a rotating disk. The rotating disk is rotatably provided on one side of the auxiliary matching seat, and the drilling drill bit passes through the rotating disk.

[0008] The cutting positioning component is arranged on one side of the switching mounting seat, and the cutting positioning component includes a cutting circular knife.

[0009] Preferably, a pushing adjustment seat is provided on one side of the hole-drilling machine base, and the pushing adjustment seat is connected to one end of the steel pipe to be processed through a three-jaw chuck. Two clamping supports are respectively vertically arranged on one side of the upper end of the hole-drilling machine base. Diagonal clamping rollers are provided in the two clamping supports. The end of the steel pipe to be processed away from the three-jaw chuck passes through the two clamping supports and contacts with the intersecting clamping rollers.

[0010] Preferably, a driving motor box is provided on one side of the switching mounting seat, and a hole opening transmission box is provided on the side of the upper end of the switching mounting seat close to the driving motor box, and a pulling vertical plate is provided at the lower end of the switching mounting seat away from the hole opening transmission box. A pushing control cylinder is horizontally provided on the side of the hole opening machine tool base close to the pulling vertical plate, and one end of the pushing control cylinder is connected to the pulling vertical plate. A drill mounting shaft is provided for horizontal rotation of the hole opening transmission box close to the steel pipe to be processed through a bearing, and the hole opening drill bit is provided on one side of the drill mounting shaft, and the end of the hole opening drill bit points to the steel pipe to be processed, and the hole opening drill bit and the virtual axis of the steel pipe to be processed are in the same horizontal plane, and the output shaft of the driving motor box is plugged into the hole opening transmission box and is sleeved with a driving bevel gear, and one end of the drill mounting shaft is plugged into the hole opening transmission box with a driven bevel gear, and the driven bevel gear and one side of the driving bevel gear are meshed and connected.

[0011] Preferably, the switching mounting seat is provided with two spring grooves at the lower end near the open hole transmission box side, and adaptive guide rods are horizontally provided in the two spring grooves. A support slide is provided at the lower end of the auxiliary matching seat, and the two ends of the support slide are respectively inserted into the two spring grooves and movably sleeved on the two adaptive guide rods. One side of the auxiliary matching seat is in contact with the steel pipe to be processed, and a support spring is provided at the end of the support slide away from the steel pipe to be processed, and the support spring is sleeved on the adaptive guide rod.

[0012] Preferably, a chip blowing groove is opened through the lower end of the auxiliary matching seat close to the steel pipe to be processed, and a rotating disk is opened in the chip blowing groove through the auxiliary matching seat. The rotating disk rotates through two sealed bearings and is inserted into the bearing groove. A through hole is opened and closed through the center of the rotating disk, and the hole-opening drill bit passes through the through hole horizontally.

[0013] Preferably, an annular diverter groove is provided in the bearing groove between the two sealed bearings, an access air nozzle is provided on one side of the annular diverter groove through the auxiliary matching seat, a plurality of piston grooves are provided along the outer peripheral side of the rotating disk and connected to the annular diverter groove, a receiving groove is provided on one side of the through hole located at the annular diverter groove, a piston rod is movably connected between the receiving groove and the piston groove, the piston rod is respectively provided with a pushing piston and a synchronous clamping block in the piston groove and the receiving groove, a reset spring is sleeved on one end of the piston rod located in the piston groove, and when used for normal drilling, one side of the plurality of synchronous clamping blocks respectively extends out of the receiving groove and slides in contact with the outer peripheral side of the hole-opening drill bit.

[0014] Preferably, a distribution air cavity is provided in the auxiliary matching seat above the chip blowing groove, a plurality of blowing holes are provided in the distribution air cavity at the lower end connected to the chip blowing groove, a transfer cavity is provided in the auxiliary matching seat on one side connected to the distribution air cavity, the lower end of the transfer cavity is connected to the annular diversion groove, and a gas one-way valve is inserted on the side where the transfer cavity is connected to the distribution air cavity.

[0015] Preferably, a first support frame is vertically provided at the upper end of one side of the switching mounting seat, a first double-groove pulley is rotatably provided on the first support frame, a second support frame is provided at the lower end of the switching mounting seat close to the first support frame, the second support plus a second double-groove pulley is rotatably provided, a first transmission belt is provided between the first double-groove pulley and the second double-groove pulley, one end of the axle of the first double-groove pulley passes through the first support frame and is fixedly connected to the cutting circular knife, a grinding block is fixedly embedded in the center of the cutting circular knife, and the end face of the grinding block is flush with the cutting circular knife.

[0016] Preferably, a rotating shaft is horizontally provided on one side of the open hole transmission box through a bearing support plate, the rotating shaft is coaxially arranged with the output shaft of the driving motor box, and a second clutch disc and a third double-groove pulley are respectively provided at both ends of the rotating shaft, and a first clutch disc is provided on the side of the driving motor box close to the second clutch disc, and the first clutch disc and the second clutch disc are arranged correspondingly, and a third support frame is provided at the lower end of the switching mounting seat and on the side of the third double-groove pulley, and a fourth double-groove pulley is rotatably provided on the third support frame, a second transmission belt is provided between the third double-groove pulley and the fourth double-groove pulley, and a third transmission belt is provided between the fourth double-groove pulley and the second double-groove pulley.

[0017] Preferably, the switching mounting seat is located on one side of the driving motor box and is provided with a stabilizing slide groove, the lower end of the driving motor box is provided with a T-shaped slide, the T-shaped slide is horizontally inserted into the stabilizing slide groove, the open hole machine tool base is located on one side of the driving motor box and is horizontally provided with a Z-shaped track-changing slide groove, the lower end of the T-shaped slide passes through the stabilizing slide groove and is provided with a sliding pull rod, and the sliding pull rod is slidably inserted into the Z-shaped track-changing slide groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] After the drilling machine base is stably clamped, the switching mounting seat with the auxiliary positioning component slides horizontally to make the rotation-controlled drilling drill contact with the steel pipe to be processed. Before the drilling drill bit is about to contact the steel pipe to be processed, the auxiliary positioning component is used to provide auxiliary support to the part of the drilling drill bit away from the rotating power source to avoid the deformation of the drilling drill bit when contacting the steel pipe to be processed, which affects the drilling accuracy. At the same time, the drilling drill bit can be subjected to chip blowing and heat dissipation treatment during the drilling operation, thereby further improving the precision and reliability of the drilling. In addition, with the cooperation of the cutting positioning component, the end of the steel pipe to be processed can be processed and the position information of the initial drilling can be accurately located, thereby achieving the stability of the precision drilling processing of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of part A;

[0022] Figure 3 This is a schematic diagram of the installation structure of the switch mounting base of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the C part;

[0025] Figure 6 This is a schematic diagram of the connection structure between the switching mounting base and the opening machine tool base of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the D part;

[0027] Figure 8 For the present invention Figure 6 Schematic diagram of part E;

[0028] Figure 9 This is a schematic diagram of the connection between the auxiliary matching seat and the hole drilling bit of the present invention;

[0029] Figure 10 This is a side sectional view of the present invention connected with the rotating disk;

[0030] Figure 11 For the present invention Figure 10 Schematic diagram of the F part;

[0031] Figure 12 This is a schematic diagram of the structure of the distributed air cavity arrangement of the present invention;

[0032] Figure 13 For the present invention Figure 12 Schematic diagram of G part;

[0033] Figure 14 This is a schematic diagram of the structure of the circular cutting knife of the present invention.

[0034] In the figure: drilling machine base 1, switching mounting seat 2, clamping support 3, steel pipe to be processed 4, drilling transmission box 5, drill bit mounting shaft 6, drilling drill bit 7, auxiliary matching seat 8, driven bevel gear 9, driving motor box 10, driving bevel gear 11, cutting circular knife 12, first double groove pulley 13, grinding block 14, second double groove pulley 15, third double groove pulley 16, fourth double groove pulley 17, first clutch disc 18, second clutch disc 19, stabilizing slide 21, T-shaped slide 22, Z-shaped apodization slide 23, sliding pulling rod 24, bearing groove 25, rotating disk 26, annular diverter groove 27, piston groove 28, storage groove 29, synchronous clamping block 30, piston rod 31, return spring 32, access air nozzle 33, adapter chamber 34, distribution air chamber 35, blowing hole 36, gas one-way valve 37, pulling vertical plate 38, pushing control cylinder 39, spring groove 40, adaptive guide rod 41, support spring 42. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Please see the attached Figure 1-14 , this application provides the following technical solutions.

[0037] Embodiment 1: A precision steel pipe drilling equipment, including a drilling machine tool base 1, the upper end of the drilling machine tool base 1 is horizontally provided with a clamping support 3 through a clamping assembly, the clamping assembly includes two clamping supports 3, the drilling machine tool base 1 is located below the two clamping supports 3 and is horizontally movable with a switching mounting seat 2, a drilling assembly is provided on one side of the upper end of the switching mounting seat 2, the drilling assembly includes a drilling transmission box 5 and a drilling drill bit 7, a push adjustment seat is provided on one side of the drilling machine tool base 1, the push adjustment seat is connected to one end of the steel pipe 4 to be processed through a three-jaw chuck, and the two clamping supports 3 are respectively vertically provided. On one side of the upper end of the drilling machine tool base 1, diagonal clamping rollers are provided in the two clamping supports 3. The end of the steel pipe 4 to be processed away from the three-jaw chuck passes through the two clamping supports 3 and contacts the cross clamping rollers; the pushing adjustment seat is used for the horizontal pushing and rotation control of the steel pipe 4 to be processed, and supports the distal end of the steel pipe 4 to be processed. The diagonal clamping rollers are two movable clamping seats, each with double clamping rollers. When the two movable clamping seats move relative to each other, the steel pipe 4 to be processed can be centrally positioned and clamped by four clamping rods. At the same time, the rotation of the three-jaw chuck can facilitate the rotation support of the steel pipe 4 to be processed.

[0038] A driving motor box 10 is provided on one side of the switching mounting seat 2, and a hole-drilling transmission box 5 is provided on the side of the upper end of the switching mounting seat 2 close to the driving motor box 10. A pulling vertical plate 38 is provided on the lower end of the switching mounting seat 2 away from the hole-drilling transmission box 5. A pushing control cylinder 39 is horizontally provided on the side of the hole-drilling machine tool base 1 close to the pulling vertical plate 38. One end of the pushing control cylinder 39 is connected to the pulling vertical plate 38. The hole-drilling transmission box 5 is provided with a drill bit mounting shaft 6 on the end close to the steel pipe 4 to be processed through a bearing for horizontal rotation. The hole-drilling drill bit 7 is provided on one side of the drill bit mounting shaft 6, and the end of the hole-drilling drill bit 7 is set to point to the steel pipe 4 to be processed, and the hole-drilling drill bit 7 and the virtual axis of the steel pipe 4 to be processed are at the same level. On the surface, the output shaft of the driving motor box 10 is inserted into the hole opening transmission box 5 and is sleeved with a driving bevel gear 11. One end of the drill mounting shaft 6 is inserted into the hole opening transmission box 5 and is provided with a driven bevel gear 9, and the driven bevel gear 9 is meshed with one side of the driving bevel gear 11; when the driving motor box 10 controls the driving bevel gear 11 connected to the output shaft to rotate, the drill mounting shaft 6 and the hole opening drill bit 7 connected to the driven bevel gear 9 can be controlled to rotate. At this time, the switching mounting seat 2 is horizontally slid by pushing the control cylinder 39, so that the hole opening drill bit 7 can be moved close to or away from the steel pipe 4 to be processed to realize hole opening and disengagement. The switching mounting seat 2 can be slidably supported by a commonly used industrial slide rail pair.

[0039] An auxiliary positioning component is set to enhance the stability of the drilling drill 7 away from the end of the drill mounting shaft 6. The auxiliary positioning component is arranged between the steel pipe 4 to be processed and the drilling transmission box 5. The auxiliary positioning component includes an auxiliary matching seat 8 and a rotating disk 26. The rotating disk 26 is rotatably arranged on one side of the auxiliary matching seat 8. The drilling drill 7 passes through the rotating disk 26. The lower end of the switching mounting seat 2 close to the side of the drilling transmission box 5 is provided with two spring grooves 40. The two spring grooves 40 are horizontally provided with adaptive guide rods 41. The lower end of the auxiliary matching seat 8 is provided with a supporting slide. The two ends of the supporting slide are respectively inserted into the two spring grooves 40 and movably sleeved with the two adaptive guide rods 41. One side of the auxiliary matching seat 8 In contact with the steel pipe 4 to be processed, a support spring 42 is provided at the end of the support slide away from the steel pipe 4 to be processed, and the support spring 42 is sleeved on the adaptive guide rod 41. The auxiliary matching seat 8 slides on the adaptive guide rod 41 through the support slide. Before the hole drill bit 7 is about to approach the steel pipe 4 to be processed, it first contacts the steel pipe 4 to be processed through the elastic support of the support spring 42. Then, when the switching mounting seat 2 controls the hole drill bit 7 to continue to move toward the steel pipe 4 to be processed, the auxiliary matching seat 8 is to always keep the side of the auxiliary matching seat 8 in contact with the steel pipe 4 to be processed. The auxiliary matching seat 8 squeezes the support spring 42 on the adaptive guide rod 41 through the support slide to keep the auxiliary matching seat 8 in contact with the steel pipe 4 to be processed.

[0040] The auxiliary matching seat 8 is provided with a chip blowing groove at the lower end near the side of the steel pipe 4 to be processed, and a companion rotating disk 26 is provided in the chip blowing groove through the auxiliary matching seat 8. The companion rotating disk 26 is rotated and inserted into the bearing groove 25 through two sealed bearings. A through hole is opened and closed in the center of the companion rotating disk 26, and the drilling drill 7 passes through the through hole horizontally. An annular diverter groove 27 is provided in the bearing groove 25 between the two sealed bearings. One side of the annular diverter groove 27 passes through the auxiliary matching seat 8 and is provided with an access air nozzle 33. The outer peripheral side of the accompanying rotating disk 26 is connected to the annular diverter groove 27 and is provided with a plurality of piston grooves 28. A receiving groove 29 is provided on one side of the annular diverter groove 27 in the through hole. A piston rod 31 is movably inserted between the receiving groove 29 and the piston groove 28. The piston rod 31 is provided with a pushing piston and a synchronous clamping block 30 in the piston groove 28 and the receiving groove 29 respectively. One end of the piston rod 31 located in the piston groove 28 is sleeved with a return spring 32. During normal drilling use, if One side of the dry synchronous clamping block 30 extends out of the receiving groove 29 and slides into contact with the outer peripheral side of the hole drill bit 7; when the hole drill bit 7 is inserted into the through groove of the accompanying rotating disk 26, the access nozzle 33 is connected to the high-pressure gas, and the high-pressure gas pushes the plurality of piston rods 31 and the synchronous clamping block 30 to move toward the position of the hole drill bit 7. At this time, the plurality of synchronous clamping blocks 30 clamp the hole drill bit 7. When the hole drill bit 7 rotates at high speed along the drill bit mounting shaft 6, the accompanying rotating disk 26 can rotate synchronously along the sealed bearing under the clamping action of the synchronous clamping block 30, without causing unnecessary wear. Then, as the hole drill bit 7 moves horizontally, the hole drill bit 7 slides along the plurality of synchronous clamping blocks 30 to maintain the stability of the hole opening of the hole drill bit 7 close to one end of the steel pipe 4 to be processed. Lubricating oil is sprayed between the synchronous clamping block 30 and the hole drill bit 7. When the hole drill bit 7 moves horizontally along the axis of the accompanying rotating disk 26, the hole drill bit 7 can move between the plurality of synchronous clamping blocks 30.

[0041] A distribution air cavity 35 is provided in the auxiliary matching seat 8 above the chip blowing groove, and a plurality of blowing holes 36 are provided in the distribution air cavity 35 at the lower end thereof, which is connected to the chip blowing groove. A transfer cavity 34 is provided in the auxiliary matching seat 8 on one side of the distribution air cavity 35, and the lower end of the transfer cavity 34 is connected to the annular diverter groove 27, and a gas one-way valve 37 is inserted on the side where the transfer cavity 34 is connected to the distribution air cavity 35. When the high-pressure airflow supplied by the air nozzle 33 is higher than the release pressure of the gas one-way valve 37, the high-pressure airflow in the annular diverter groove 27 enters the distribution air cavity 35 from the transfer cavity 34, and then blows downward from the plurality of blowing holes 36 to the working position of the hole-opening drill bit 7, so as to clean the adhered debris and cool down the hole-opening drill bit 7, thereby improving the precision and reliability of the continuous operation of the hole-opening drill bit 7.

[0042] Embodiment 2: On the basis of embodiment 1, a cutting positioning assembly is provided to position the initial end of the steel pipe 4 to be processed. The cutting positioning assembly is provided on one side of the switching mounting seat 2. The cutting positioning assembly includes a cutting circular knife 12. A first support frame is vertically provided on the upper end of one side of the switching mounting seat 2. A first double-groove pulley 13 is rotatably provided on the first support frame. A second support frame is provided on the lower end of the switching mounting seat 2 near the first support frame. The second support frame is rotatably provided with a second double-groove pulley 15. A first transmission belt is provided between the first double-groove pulley 13 and the second double-groove pulley 15. The wheel of the first double-groove pulley 13 One end of the shaft passes through the first support frame and is fixedly connected to the cutting circular knife 12. The center of the cutting circular knife 12 is fixedly embedded with a grinding block 14, and the end face of the grinding block 14 is flush with the cutting circular knife 12. A rotating shaft is horizontally provided on one side of the opening transmission box 5 through a bearing support plate. The rotating shaft is coaxially arranged with the output shaft of the driving motor box 10. A second clutch disc 19 and a third double-groove pulley 16 are respectively provided at both ends of the rotating shaft. A first clutch disc 18 is provided on one side of the driving motor box 10 close to the second clutch disc 19. The first clutch disc 18 and the second clutch disc 19 are correspondingly arranged. The lower end of the switching mounting seat 2 is positioned A third support frame is provided on one side of the third double-groove pulley 16, and a fourth double-groove pulley 17 is rotatably provided on the third support frame. A second transmission belt is provided between the third double-groove pulley 16 and the fourth double-groove pulley 17, and a third transmission belt is provided between the fourth double-groove pulley 17 and the second double-groove pulley 15. When the output shaft of the driving motor box 10 controls the first clutch disc 18 to contact the second clutch disc 19, the driving bevel gear 11 and the driven bevel gear 9 are misaligned, and the first clutch disc 18 and the second clutch disc 19 are both provided with anti-skid patterns or anti-skid grooves. When the two are docked, the driving motor box 10 can drive the third double-groove pulley 16 Rotate, at this time the third double-groove pulley 16 can drive the fourth double-groove pulley 17 to rotate, the fourth double-groove pulley 17 can drive the second double-groove pulley 15, the second double-groove pulley 15 then drives the first double-groove pulley 13 connected to the cutting circular knife 12 and the grinding block 14 to rotate, and then with the horizontal movement of the switching mounting seat 2, the cutting circular knife 12 and the grinding block 14 are cut and ground to the end of the steel pipe 4 to be processed, and then the position at this time is used as the reference position, when the hole-opening drill bit 7 and the steel pipe 4 to be processed are drilled, the spacing size is ensured to be accurate, and at the same time, the irregularity of the end of the steel pipe 4 to be processed is processed.

[0043] The switching mounting seat 2 is located on one side of the driving motor box 10 and is provided with a stabilizing slot 21. The lower end of the driving motor box 10 is provided with a T-shaped slide 22, and the T-shaped slide 22 is horizontally inserted into the stabilizing slot 21. The drilling machine tool base 1 is located on one side of the driving motor box 10 and is horizontally provided with a Z-shaped track-changing slot 23. The lower end of the T-shaped slide 22 passes through the stabilizing slot 21 and is provided with a sliding pull rod 24, and the sliding pull rod 24 is slidably inserted into the Z-shaped track-changing slot 23. When the drilling bit 7 approaches the steel pipe 4 to be processed, the driving motor box 10 controls the sliding of the sliding pull rod 24 in the Z-shaped track-changing slot 23 to contact the driving bevel gear 11 of the driving motor box 10 with the driven bevel gear 9. When the drilling bit 7 is away from the steel pipe 4 to be processed and the cutting circular knife 12 approaches the steel pipe 4 to be processed, the first clutch disc 18 and the second clutch disc 19 are fitted first. At this time, the driving motor box 10 can drive the cutting circular knife 12 alone to perform high-speed rotation control.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A precision steel pipe hole opening device, characterized in that: include: A drilling machine base (1), wherein the upper end of the drilling machine base (1) is horizontally provided with a clamping support (3) through a clamping assembly, the clamping assembly includes two clamping supports (3), the drilling machine base (1) is located below the two clamping supports (3) and is horizontally provided with a switching mounting seat (2), a drilling assembly is provided on one side of the upper end of the switching mounting seat (2), and the drilling assembly includes a drilling transmission box (5) and a drilling drill bit (7); An auxiliary positioning assembly is provided between the steel pipe to be processed (4) and the drilling transmission box (5), and the auxiliary positioning assembly includes an auxiliary matching seat (8) and a rotating disk (26). The rotating disk (26) is rotatably provided on one side of the auxiliary matching seat (8), and the drilling drill bit (7) is provided through the rotating disk (26). A cutting positioning assembly, the cutting positioning assembly being arranged on one side of the switching mounting seat (2), and the cutting positioning assembly comprising a cutting circular knife (12); A driving motor box (10) is provided on one side of the switching mounting seat (2), an output shaft of the driving motor box (10) is plugged into the opening transmission box (5) and sleeved with a driving bevel gear (11), one end of the drill bit mounting shaft (6) is plugged into the opening transmission box (5) and a driven bevel gear (9) is provided, and one side of the driven bevel gear (9) and the driving bevel gear (11) are meshed and connected; A rotation shaft is horizontally provided on one side of the perforated transmission box (5) through a bearing support plate. The rotation shaft is coaxially arranged with the output shaft of the drive motor box (10). A second clutch disc (19) and a third double-groove pulley (16) are respectively provided at both ends of the rotation shaft. A first clutch disc (18) is provided on a side of the drive motor box (10) close to the second clutch disc (19). The first clutch disc (18) and the second clutch disc (19) are arranged correspondingly. The switching mounting seat (2) is located on one side of the driving motor box (10) and is provided with a stabilizing slide groove (21). The lower end of the driving motor box (10) is provided with a T-shaped slide seat (22), and the T-shaped slide seat (22) is horizontally inserted into the stabilizing slide groove (21). The opening machine tool base (1) is located on one side of the driving motor box (10) and is horizontally provided with a Z-shaped track-changing slide groove (23). The lower end of the T-shaped slide seat (22) passes through the stabilizing slide groove (21) and is provided with a sliding pull rod (24), and the sliding pull rod (24) is slidably inserted into the Z-shaped track-changing slide groove (23).

2. The precision steel pipe drilling equipment according to claim 1, characterized in that: A push adjustment seat is provided on one side of the drilling machine base (1), and the push adjustment seat is connected to one end of the steel pipe (4) to be processed through a three-jaw chuck. Two clamping supports (3) are respectively vertically arranged on one side of the upper end of the drilling machine base (1). Diagonal clamping rollers are provided in the two clamping supports (3). The end of the steel pipe (4) to be processed away from the three-jaw chuck passes through the two clamping supports (3) and contacts the diagonal clamping rollers.

3. The precision steel pipe drilling equipment according to claim 2, characterized in that: The hole-opening transmission box (5) is arranged on the side of the upper end of the switching mounting seat (2) close to the driving motor box (10), and the lower end of the switching mounting seat (2) away from the hole-opening transmission box (5) is provided with a pulling vertical plate (38). A push control cylinder (39) is horizontally provided on the side of the hole-opening machine tool base (1) close to the pulling vertical plate (38), and one end of the push control cylinder (39) is connected to the pulling vertical plate (38). The hole-opening transmission box (5) is provided with a drill bit mounting shaft (6) through a bearing for horizontal rotation at one end close to the steel pipe to be processed (4). The hole-opening drill bit (7) is arranged on one side of the drill bit mounting shaft (6), and the end of the hole-opening drill bit (7) is arranged to point to the steel pipe to be processed (4). The hole-opening drill bit (7) and the virtual axis of the steel pipe to be processed (4) are in the same horizontal plane.

4. The precision steel pipe drilling equipment according to claim 3, characterized in that: The switching mounting seat (2) is provided with two spring grooves (40) at the lower end near the opening transmission box (5), and the two spring grooves (40) are both horizontally provided with adaptive guide rods (41). The lower end of the auxiliary matching seat (8) is provided with a support slide, and the two ends of the support slide are respectively inserted into the two spring grooves (40) and movably sleeved with the two adaptive guide rods (41). One side of the auxiliary matching seat (8) is in contact with the steel pipe to be processed (4), and the end of the support slide away from the steel pipe to be processed (4) is provided with a support spring (42), and the support spring (42) is sleeved with the adaptive guide rod (41).

5. The precision steel pipe drilling equipment according to claim 4, characterized in that: The auxiliary matching seat (8) is provided with a chip blowing groove at the lower end of one side close to the steel pipe (4) to be processed. A rotating disc (26) is provided in the chip blowing groove through the auxiliary matching seat (8). The rotating disc (26) rotates through two sealed bearings and is inserted into the bearing groove (25). A through hole is provided through the center of the rotating disc (26), and the hole-opening drill bit (7) horizontally penetrates the through hole.

6. The precision steel pipe drilling equipment according to claim 5, characterized in that: An annular diverter groove (27) is provided in the bearing groove (25) between the two sealed bearings. An access air nozzle (33) is provided on one side of the annular diverter groove (27) through the auxiliary matching seat (8). A plurality of piston grooves (28) are provided on the outer peripheral side of the rotating disk (26) and connected to the annular diverter groove (27). A receiving groove (29) is provided on one side of the annular diverter groove (27) in the through hole. A piston rod (31) is movably connected between the receiving groove (29) and the piston groove (28). The piston rod (31) is provided with a pushing piston and a synchronous clamping block (30) in the piston groove (28) and the receiving groove (29) respectively. A reset spring (32) is provided on one end of the piston rod (31) in the piston groove (28). When drilling normally, one side of the plurality of synchronous clamping blocks (30) extends out of the receiving groove (29) and makes sliding contact with the outer peripheral side of the hole drill bit (7).

7. The precision steel pipe drilling equipment according to claim 6, characterized in that: A distribution air cavity (35) is provided in the auxiliary matching seat (8) above the chip blowing groove, and a plurality of blowing holes (36) are provided in the distribution air cavity (35) at the lower end thereof and connected to the chip blowing groove. A transfer cavity (34) is provided in the auxiliary matching seat (8) on one side thereof and connected to the distribution air cavity (35), and the lower end of the transfer cavity (34) is connected to the annular diverter groove (27), and a gas one-way valve (37) is inserted into the side where the transfer cavity (34) is connected to the distribution air cavity (35).

8. The precision steel pipe drilling equipment according to claim 7, characterized in that: A first support frame is vertically provided at the upper end of one side of the switching mounting seat (2), and a first double-groove pulley (13) is rotatably provided on the first support frame. A second support frame is provided at the lower end of the switching mounting seat (2) close to the first support frame, and a second double-groove pulley (15) is rotatably provided on the second support frame. A first transmission belt is provided between the first double-groove pulley (13) and the second double-groove pulley (15), and one end of the wheel shaft of the first double-groove pulley (13) passes through the first support frame and is fixedly connected to the cutting circular knife (12). A grinding block (14) is fixedly embedded in the center of the cutting circular knife (12), and an end surface of the grinding block (14) is flush with the cutting circular knife (12).

9. The precision steel pipe drilling equipment according to claim 8, characterized in that: A third support frame is provided at the lower end of the switching mounting seat (2) and on one side of the third double-groove pulley (16); a fourth double-groove pulley (17) is rotatably provided on the third support frame; a second transmission belt is provided between the third double-groove pulley (16) and the fourth double-groove pulley (17); and a third transmission belt is provided between the fourth double-groove pulley (17) and the second double-groove pulley (15).

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