Metal round pipe surface drilling treatment equipment

Abstract

The invention relates to the technical field of drilling treatment, and discloses metal round pipe surface drilling treatment equipment which comprises a limiting type moving mechanism and a telescopic linkage mechanism. According to the metal round pipe surface drilling treatment equipment, a lead screw is installed below a table plate, cleaning operation on metal filings can be facilitated, meanwhile, movement of a sliding block is limited by a threaded structure and an axial limiting rod, the working stability of a round pipe can be guaranteed on the basis that movement is achieved during drilling of the round pipe, and in addition, the working efficiency is improved. The axial movement of the sliding block comes from the damping effect of the thread structure and the spiral spring, and therefore the phenomenon that the precision control capacity of the drilling position is poor due to the thread pitch gap difference of the internal thread structure and the external thread structure is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of drilling processing, in particular to a metal round tube surface drilling processing device. Background Art

[0002] Round pipe drilling equipment is a special equipment used for drilling holes on round pipes or pipes. This equipment is usually used in industrial manufacturing, construction and pipeline installation.

[0003] For example, a Chinese patent with application number "CN201921658322.X" discloses "a circular drilling device for a pipeline", whose main structure includes a workbench, a movable part, a controller, a chuck, a driving device, an electric drill, a displacement device, and a fixed part. A driving device is provided at the upper end of the workbench, and a displacement device is provided on the driving device. An electric drill is provided at the upper end of the displacement device. A movable part and a fixed part are provided on one side of the driving device. The fixed part is connected to the workbench, and a slide rail is provided between the movable part and the fixed part. One end of the slide rail is connected to the fixed part, and the other end of the slide rail is connected to the workbench through a first fixed plate. The movable part is slidably connected to the slide rail. A chuck is provided on the opposite side of the movable part and the fixed part, and a clamping block is provided on the chuck. The pipeline is fixed by the clamping block. The controller is provided on one side of the workbench, and the controller is electrically connected to the electric drill, the driving device, the displacement device, and the fixed part respectively. Although this solution can tighten the round tube, it is impossible to move the clamped round tube in actual use, so continuous drilling cannot be achieved. The position of the round tube needs to be moved manually, which is very inconvenient. In addition, the drill bit is easily damaged after long-term use. The equipment cannot disassemble the drill bit separately, and the maintenance cost is high.

[0004] To this end, a Chinese patent with publication number "CN221231640U" has published "a kind of circular tube drilling equipment", whose main structure includes a workbench with a pillar fixedly connected to the top, a clamping mechanism fixedly connected to the table top of the workbench, and a servo motor fixedly connected to the inside of the horizontal groove. The output shaft of the servo motor is fixedly connected to a screw through a coupling, and the screw is externally threadedly connected to a slider. The top of the slider is fixedly connected to a fixing assembly, and the fixing assembly includes a semicircular base, and the top of the semicircular base is fixedly connected to a bracket. The circular tube drilling equipment adopts the cooperation of a servo motor, a screw, a fixing assembly, and a slider, fixes the circular tube to be punched through the fixing assembly, and then starts the servo motor to drive the screw to rotate in the bearing, so that the slider drives the fixing assembly to move horizontally, thereby solving the defect of only being able to punch holes at a fixed position, realizing continuous punching of circular tubes, and improving the punching efficiency of the equipment.

[0005] The above-mentioned round tube drilling equipment drives the slider to move horizontally through the rotating screw, but it has the following three defects: 1. Since there is no size limit between the slider and the transverse groove, there is a mismatch in the width size between the two, which causes the slider to swing left and right in the screw. Therefore, it has poor control over the working stability of the round tube; 2. The screw and the slider are connected in a threaded structure, and there is a gap difference between the pitch of the internal thread structure and the pitch of the external thread structure of the threaded structure, and the gap difference will gradually increase with the working time, resulting in poor control over the precision of the drilling position of the equipment; 3. The upper port of the transverse groove is in an open state and is located directly below the drilling site, resulting in metal chips formed by drilling directly falling on the surface of the transverse groove or the screw, making it difficult to clean. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a metal round tube surface drilling processing equipment. By installing the screw rod under the table top, the cleaning operation of metal chips can be facilitated. At the same time, the movement of the slider is limited by the threaded structure and the axial limit rod, which can ensure the working stability of the round tube while achieving movement during drilling. Moreover, the axial movement of the slider comes from the damping effect of the threaded structure and the spiral spring, thereby preventing the occurrence of poor precision control of the drilling position caused by the difference in pitch gap between the internal thread structure and the external thread structure, thereby solving the above-mentioned technical problems.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a metal round tube surface drilling processing equipment, comprising a table top with support legs installed at the bottom, a side support plate fixedly installed on one side of the table top, a longitudinal support rod fixedly installed on the upper surface of the side support plate, a motor fixing frame fixedly installed on the top of the longitudinal support rod, a driving motor fixedly installed in the motor fixing frame in an inverted manner, a drill bit that can rotate with the rotor of the driving motor, and a pneumatic caliper located just above the table top and capable of clamping the round tube, and also comprising a limiting moving mechanism, the interior of which is provided with an externally threaded rod rotatably installed under the table top, axial limiting rods fixedly installed on both sides of the externally threaded rod, and a sleeve placed on the external threaded rod. A slider is arranged on the periphery of the threaded rod and the axial limit rod and can move axially along the external threaded rod and the axial limit rod, a No. 1 coil spring is placed on the periphery of the axial limit rod and can produce a damping effect on the slider, and a curved connecting frame is fixedly installed on one side of the slider and can drive the pneumatic caliper to move, and a telescopic linkage mechanism is arranged inside thereof with a longitudinal hollow column with a hollow structure that can rotate with the rotor, a linkage movable plate is placed inside the longitudinal hollow column and can rotate with the longitudinal hollow column and can move axially along the longitudinal hollow column, a No. 2 coil spring has a downward elastic damping effect on the linkage movable plate, and a longitudinal telescopic rod that can move with the linkage movable plate and can drive the drill bit to rotate.

[0008] Preferably, the limited movable mechanism includes two vertical fixed plates symmetrically fixedly installed on the lower surface of the table board and a slider that can move along the length direction of the table board, a No. 1 shaft mounting hole is provided at the center of each of the vertical fixed plates, two disc-shaped protrusion structures symmetrical about the No. 1 shaft mounting hole are provided in the vertical fixed plate, a No. 1 rotating shaft that can rotate is installed in the interior of the No. 1 shaft mounting hole through a bearing, a hand-cranked wheel is fixedly installed at the end of one of the No. 1 rotating shafts, an externally threaded rod is fixedly installed between the opposite ends of the two No. 1 rotating shafts, and a shaft is fixedly installed between the disc-shaped protrusion structures of the two vertical fixed plates. The slider is provided with an internal threaded hole for housing the external threaded rod, and the slider and the external threaded rod are connected by a threaded structure, and the slider is provided with two axial sliding holes which are housinged on the rod body of the axial limit rod and can move axially along the axial limit rod, and a No. 1 coil spring is housinged on the outer periphery of the rod body of the axial limit rod between one of the vertical fixed plates and the adjacent end face of the slider, and a curved connecting frame with one end extending to the top of the table board is fixedly installed on one side of the slider, and a pneumatic caliper is fixedly installed on the end of the curved connecting frame, and the axis center line of the pneumatic caliper and the axis center line of the drill bit are in a vertical state in the same vertical plane.

[0009] Preferably, the axis center line of the externally threaded rod and the axis center line of the axial limiting rod are in the same horizontal plane, and the axis center line of the externally threaded rod and the axis center line of the axial limiting rod are arranged in parallel.

[0010] Preferably, the thread structure includes an internal thread structure arranged in the internal thread hole and an external thread structure arranged on the rod body of the external thread rod, and the internal thread structure and the external thread structure match each other.

[0011] Preferably, the structural dimensions of the cross section of the axial sliding hole match the structural dimensions of the cross section of the axial limiting rod.

[0012] Preferably, the initial length of the No. 1 coil spring is greater than the length of the axial limiting rod.

[0013] Preferably, the telescopic linkage mechanism includes a longitudinal hollow column, the top of the longitudinal hollow column is provided with an inwardly concave structure and a shaft fixing groove for fixing the rotor, the interior of the longitudinal hollow column is provided with a component movable cavity, the bottom end of the longitudinal hollow column is provided with a shaft through hole connecting the bottom end of the component movable cavity and the external space, the longitudinal hollow column is provided with a linkage movable plate capable of axially moving along the component movable cavity, a No. 2 coil spring is installed above the linkage movable plate, the bottom end of the linkage movable plate is fixedly installed with a longitudinal telescopic rod passing through the shaft through hole, and the bottom end of the longitudinal telescopic rod is docked with the drill bit through a docking flange.

[0014] Preferably, the structural shape of the cross section of the component movable cavity is consistent with the structural shape of the cross section of the linkage movable plate, both are non-circular structures, and the structural dimensions of the cross section of the component movable cavity match the structural dimensions of the cross section of the linkage movable plate.

[0015] Preferably, the initial length of the No. 2 coil spring is greater than the depth of the active cavity of the component.

[0016] Preferably, when the bottom surface of the linkage movable plate contacts the bottom end surface of the linkage movable plate, the horizontal height of the bottom of the drill bit is lower than the horizontal height of the bottom of the pneumatic caliper, and when the upper surface of the linkage movable plate contacts the top end surface of the linkage movable plate, the horizontal height of the bottom of the drill bit is higher than the horizontal height of the top of the pneumatic caliper.

[0017] Compared with the prior art, the present invention provides a metal round tube surface drilling processing device, which has the following beneficial effects:

[0018] By installing the screw rod under the table top, the cleaning operation of metal chips can be facilitated. At the same time, the movement of the slider is limited by the threaded structure and the axial limit rod, which can ensure the working stability of the round tube while achieving movement during drilling. Moreover, the axial movement of the slider comes from the damping effect of the threaded structure and the spiral spring, thereby preventing the occurrence of poor precision control of the drilling position due to the difference in pitch gap between the internal thread structure and the external thread structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention;

[0020] Figure 2 It is a three-dimensional diagram of the present invention after being flipped;

[0021] Figure 3 is a three-dimensional cross-sectional view of the present invention;

[0022] Figure 4 It is a three-dimensional diagram of the position-limiting moving mechanism in the present invention;

[0023] Figure 5 It is a three-dimensional cross-sectional view of the position-limiting moving mechanism in the present invention;

[0024] Figure 6 It is a three-dimensional cross-sectional view of the telescopic linkage mechanism of the present invention;

[0025] Figure 7 It is a stereoscopic diagram of the linkage movable plate, the longitudinal telescopic rod and the docking flange after being assembled in the present invention.

[0026] Among them: 1. table top; 2. support legs; 3. side support plates; 4. longitudinal support rods; 5. motor fixing brackets; 6. drive motors; 7. rotors; 8. drill bits; 9. pneumatic calipers; 10. limited movable mechanism; 101. vertical fixing plate; 102. disc-shaped protruding structure; 103. No. 1 shaft mounting hole; 104. No. 1 rotating shaft; 105. hand-cranked wheel; 106. slider; 107. curved connecting frame; 108. internal threaded hole; 109. axial sliding hole; 1010. external threaded rod; 1011. axial limiting rod; 1012. No. 1 spiral spring; 11. telescopic linkage mechanism; 111. longitudinal hollow column; 112. shaft fixing groove; 113. component movable cavity; 114. shaft perforation; 115. linkage movable plate; 116. No. 2 spiral spring; 117. longitudinal telescopic rod; 118. docking flange. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 , Figure 2 and Figure 3 , a metal round tube surface drilling processing equipment, including a table top 1 with support legs 2 installed at the bottom, a side support plate 3 fixedly installed on one side of the table top 1, a longitudinal support rod 4 fixedly installed on the upper surface of the side support plate 3, a motor fixing frame 5 fixedly installed on the top of the longitudinal support rod 4, a driving motor 6 fixedly installed in the motor fixing frame 5 in an inverted manner, a drill bit 8 that can rotate with the rotor 7 of the driving motor 6, and a pneumatic caliper 9 located directly above the table top 1 and capable of clamping the round tube. An air pump that can control the gas circuit is selected, and the gas circuit of the air pump is connected to the interface in the pneumatic caliper 9. First, the drill bit 8 is pushed upward, and then the metal round tube is passed through the pneumatic caliper 9, and the air pump is started so that the metal round tube is clamped and fixed inside the pneumatic caliper 9, and then the force on the drill bit 8 is released, and the preparation work before drilling is completed.

[0029] To achieve precise control over the movement of metal tubes, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, it is necessary to set up a limited moving mechanism 10, which is internally provided with an external threaded rod 1010 rotatably mounted under the table top 1, axial limiting rods 1011 fixedly mounted on both sides of the external threaded rod 1010, a slider 106 sleeved on the outer periphery of the external threaded rod 1010 and the axial limiting rod 1011 and capable of axially moving along the external threaded rod 1010 and the axial limiting rod 1011, a No. 1 coil spring 1012 sleeved on the outer periphery of the axial limiting rod 1011 and capable of producing a damping effect on the slider 106, and a curved connecting frame 107 fixedly mounted on one side of the slider 106 and capable of driving the pneumatic caliper 9 to move, and the hand crank wheel 10 is directional rotated 5, it will drive the external threaded rod 1010 to rotate in a certain direction. Due to the connection of the threaded structure, the slider 106 will move in a certain direction, thereby driving the pneumatic caliper 9 and the metal round tube to move in a certain direction, and realizing the continuous drilling function of the metal round tube. During the movement, due to the existence of the axial limit rod 1011, the slider 106 will not shake left and right, and due to the elastic damping effect of the No. 1 coil spring 1012, combined with the force of the internal thread structure and the external thread structure, the internal thread structure and the external thread structure will not have mechanical vibration caused by mechanical clearance, thereby realizing the ability to control the precise movement of the metal round tube.

[0030] For the specific structure of the position-limiting moving mechanism 10, please refer to Figure 4 and Figure 5, including two vertical fixing plates 101 symmetrically fixedly installed on the lower surface of the table board 1 and a slider 106 that can move along the length direction of the table board 1, each of the vertical fixing plates 101 is provided with a No. 1 shaft mounting hole 103 at the center, and two disc-shaped protrusion structures 102 symmetrical about the No. 1 shaft mounting hole 103 are provided in the vertical fixing plate 101, and a No. 1 rotating shaft 104 that can rotate is installed in the No. 1 shaft mounting hole 103 of the vertical fixing plate 101 through a bearing, and a hand-cranked wheel 105 is fixedly installed at the end of one of the No. 1 rotating shafts 104, and the two No. 1 rotating shafts 104 are provided with a hand-cranked wheel 105. An externally threaded rod 1010 is fixedly installed between the opposite ends of the moving shaft 104, and an axial limiting rod 1011 is fixedly installed between the disc-shaped protrusion structures 102 of the two vertical fixed plates 101. In order to improve the precision of the movement of the components, it is necessary to make the axis center line of the externally threaded rod 1010 and the axis center line of the axial limiting rod 1011 in the same horizontal plane, and the axis center line of the externally threaded rod 1010 is arranged parallel to the axis center line of the axial limiting rod 1011. The center of the slider 106 is provided with an internally threaded hole 108 for housing the externally threaded rod 1010, and the slider 106 and the externally threaded rod 1010 are arranged in parallel. The threaded rods 1010 are connected by a threaded structure. Specifically, the threaded structure includes an internal threaded structure arranged in the internal threaded hole 108 and an external threaded structure arranged on the rod body of the external threaded rod 1010, and the internal threaded structure and the external threaded structure match each other. The slider 106 is provided with two axial sliding holes 109 which are placed on the rod body of the axial limiting rod 1011 and can move axially along the axial limiting rod 1011. In order to improve the precision of movement, it is necessary to make the structural dimensions of the cross section of the axial sliding hole 109 match the structural dimensions of the cross section of the axial limiting rod 1011. The positioning rod 1011 has a No. 1 coil spring 1012 sleeved on the outer periphery of the rod body between one of the vertical fixed plates 101 and the adjacent end face of the slider 106. In order to achieve the elastic damping effect, the initial length of the No. 1 coil spring 1012 needs to be greater than the length of the axial limiting rod 1011. A curved connecting frame 107 with one end extending to the top of the table top 1 is fixedly installed on one side of the slider 106, and a pneumatic caliper 9 is fixedly installed on the end of the curved connecting frame 107, and the axis of the pneumatic caliper 9 is vertical to the axis of the drill bit 8 in the same vertical plane.

[0031] In order to provide the elastic pressure required for drilling, thus achieving elastic drilling, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7, it is necessary to set up a telescopic linkage mechanism 11, which is provided with a longitudinal hollow column 111 with a hollow structure inside and capable of rotating with the rotor 7, a linkage movable plate 115 placed inside the longitudinal hollow column 111 and capable of rotating with the longitudinal hollow column 111 and capable of axially moving along the longitudinal hollow column 111, a No. 2 coil spring 116 having a downward elastic damping effect on the linkage movable plate 115, and a longitudinal telescopic rod 117 that can move with the linkage movable plate 115 and can drive the drill bit 8 to rotate. When the upward force on the drill bit 8 is released, since the initial length of the No. 2 coil spring 116 is greater than the movable plate 116 of the component, the linkage movable plate 115 is elastically damped downwardly. The depth of the cavity 113 will cause the drill bit 8 to press against the drilling portion of the metal tube with a certain pressure, thereby providing the elastic pressure required for drilling, driving the driving motor 6, and the rotor 7 will drive the longitudinal hollow column 111 to rotate. Since the structural shape of the cross section of the movable cavity 113 of the component is consistent with the structural shape of the cross section of the linkage movable plate 115, both are non-circular structures, and the structural dimensions of the cross section of the movable cavity 113 of the component match the structural dimensions of the cross section of the linkage movable plate 115, the linkage movable plate 115 will drive the longitudinal telescopic rod 117 to rotate and move axially, thereby realizing the drilling of the metal tube.

[0032] For the specific structure of the telescopic linkage mechanism 11, please refer to Figure 6 and Figure 7 , including a longitudinal hollow column 111, the top of which is provided with an inner concave structure and an axial fixing groove 112 for fixing and installing the rotor 7, the interior of the longitudinal hollow column 111 is provided with a component movable cavity 113, the bottom end of the longitudinal hollow column 111 is provided with an axial body through hole 114 connecting the bottom end of the component movable cavity 113 and the external space, the longitudinal hollow column 111 is provided with a linkage movable plate 115 capable of axially moving along the component movable cavity 113, and a second spiral spring is installed above the linkage movable plate 115. Spring 116, the bottom end of the linkage movable plate 115 is fixedly installed with a longitudinal telescopic rod 117 that passes through the shaft body through-hole 114, and the bottom end of the longitudinal telescopic rod 117 is docked with the drill bit 8 through a docking flange 118. When the bottom surface of the linkage movable plate 115 contacts the bottom end face of the linkage movable plate 115, the horizontal height of the bottom of the drill bit 8 is lower than the horizontal height of the bottom of the pneumatic caliper 9; when the upper surface of the linkage movable plate 115 contacts the top end face of the linkage movable plate 115, the horizontal height of the bottom of the drill bit 8 is higher than the horizontal height of the top of the pneumatic caliper 9.

[0033] When in use, select an air pump that can control the gas circuit, and connect the gas circuit of the air pump with the interface in the pneumatic caliper 9. First, push the drill bit 8 upward, and then pass the metal round tube through the pneumatic caliper 9, start the air pump, so that the metal round tube is clamped and fixed inside the pneumatic caliper 9, and then release the force on the drill bit 8. Turn the hand-cranked wheel 105 in a directional manner, which will drive the external threaded rod 1010 to rotate in a directional manner. Due to the connection of the threaded structure, the slider 106 will move in a directional manner, thereby driving the pneumatic caliper 9 and the metal round tube to move in a directional manner. When it moves to the hole-turning area, since the initial length of the No. 2 coil spring 116 is greater than that of the The depth of the movable cavity 113 of the component will cause the drill bit 8 to press against the drilling position of the metal round tube with a certain pressure, thereby providing the elastic pressure required for drilling, driving the driving motor 6, and the rotor 7 will drive the longitudinal hollow column 111 to rotate. Since the structural shape of the cross section of the movable cavity 113 of the component is consistent with the structural shape of the cross section of the linkage movable plate 115, both are non-circular structures, and the structural dimensions of the cross section of the movable cavity 113 of the component match the structural dimensions of the cross section of the linkage movable plate 115, the linkage movable plate 115 will drive the longitudinal telescopic rod 117 to rotate and move axially, thereby realizing the drilling of the metal round tube.

[0034] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal round tube surface drilling processing device, comprising a table top (1) with support legs (2) installed at the bottom, a side support plate (3) fixedly installed on one side of the table top (1), a longitudinal support rod (4) fixedly installed on the upper surface of the side support plate (3), a motor fixing frame (5) fixedly installed on the top of the longitudinal support rod (4), a driving motor (6) fixedly installed in the motor fixing frame (5) in an inverted manner, a drill bit (8) capable of rotating with the rotor (7) of the driving motor (6), and a pneumatic caliper (9) located directly above the table top (1) and capable of clamping the round tube, characterized in that: Also includes, A limit-type moving mechanism (10) is provided inside thereof with an externally threaded rod (1010) rotatably mounted below a table top (1), axial limit rods (1011) fixedly mounted on both sides of the externally threaded rod (1010), a slider (106) sleeved on the periphery of the externally threaded rod (1010) and the axial limit rod (1011) and capable of axially moving along the externally threaded rod (1010) and the axial limit rod (1011), a No. 1 coil spring (1012) sleeved on the periphery of the axial limit rod (1011) and capable of producing a damping effect on the slider (106), and a curved connecting frame (107) fixedly mounted on one side of the slider (106) and capable of driving the pneumatic caliper (9) to move; A telescopic linkage mechanism (11) is provided inside of which a longitudinal hollow column (111) having a hollow structure and capable of rotating with a rotor (7), a linkage movable plate (115) placed inside the longitudinal hollow column (111) and capable of rotating with the longitudinal hollow column (111) and capable of moving axially along the longitudinal hollow column (111), a No. 2 spiral spring (116) having a downward elastic damping effect on the linkage movable plate (115), and a longitudinal telescopic rod (117) capable of moving with the linkage movable plate (115) and capable of driving a drill bit (8) to rotate.

2. The metal round tube surface drilling processing equipment according to claim 1 is characterized in that: The limiting movable mechanism (10) comprises two vertical fixing plates (101) symmetrically fixedly mounted on the lower surface of the table top (1) and a slider (106) capable of moving along the length direction of the table top (1), each of the vertical fixing plates (101) is provided with a No. 1 shaft mounting hole (103) at its center, and two disc-shaped protrusion structures (102) symmetrical about the No. 1 shaft mounting hole (103) are provided in the vertical fixing plate (101), a No. 1 rotating shaft (104) capable of rotating is installed in the interior of the No. 1 shaft mounting hole (103) of the vertical fixing plate (101) via a bearing, a hand-cranked wheel (105) is fixedly mounted at the end of one of the No. 1 rotating shafts (104), an externally threaded rod (1010) is fixedly mounted between the opposite ends of the two No. 1 rotating shafts (104), and an axial limiting rod (1011) is fixedly mounted between the disc-shaped protrusion structures (102) of the two vertical fixing plates (101). ), the center of the slider (106) is provided with an internal threaded hole (108) for sleeve-mounting the external threaded rod (1010), and the slider (106) and the external threaded rod (1010) are connected via a threaded structure, and the slider (106) is provided with two axial sliding holes (109) sleeved on the rod body of the axial limiting rod (1011) and capable of axially moving along the axial limiting rod (1011), and the axial limiting rod (1011) is located at one of the A No. 1 coil spring (1012) is sleeved on the outer periphery of the rod body between the vertical fixed plate (101) and the adjacent end face of the slider (106), and a curved connecting frame (107) with one end extending to the top of the table top (1) is fixedly installed on one side of the slider (106), and a pneumatic caliper (9) is fixedly installed on the end of the curved connecting frame (107), and the axis of the pneumatic caliper (9) and the axis of the drill bit (8) are in a vertical state in the same vertical plane.

3. The metal round tube surface drilling processing equipment according to claim 2 is characterized in that: The axis center line of the externally threaded rod (1010) and the axis center line of the axial limiting rod (1011) are located in the same horizontal plane, and the axis center line of the externally threaded rod (1010) and the axis center line of the axial limiting rod (1011) are arranged in parallel.

4. The metal round tube surface drilling processing equipment according to claim 3 is characterized in that: The thread structure comprises an internal thread structure arranged in the internal thread hole (108) and an external thread structure arranged on the rod body of the external thread rod (1010), and the internal thread structure and the external thread structure match each other.

5. The metal round tube surface drilling processing equipment according to claim 4 is characterized in that: The structural dimensions of the cross section of the axial sliding hole (109) match the structural dimensions of the cross section of the axial limiting rod (1011).

6. The metal round tube surface drilling processing equipment according to claim 5 is characterized in that: The initial length of the No. 1 coil spring (1012) is greater than the length of the axial limiting rod (1011).

7. The metal round tube surface drilling processing equipment according to claim 6 is characterized by: The telescopic linkage mechanism (11) comprises a longitudinal hollow column (111), the top end of the longitudinal hollow column (111) is provided with an inner concave structure and an axial body fixing groove (112) for fixing and installing the rotor (7), the interior of the longitudinal hollow column (111) is provided with a component movable cavity (113), the bottom end of the longitudinal hollow column (111) is provided with an axial body through hole (114) for connecting the bottom end of the component movable cavity (113) and the external space, and the longitudinal hollow column (111) is provided with a plurality of holes (114) for connecting the bottom end of the component movable cavity (113) and the external space. 1) A linkage movable plate (115) capable of axially moving along the component movable cavity (113) is arranged inside the component movable cavity (113); a No. 2 coil spring (116) is installed above the linkage movable plate (115); a longitudinal telescopic rod (117) penetrating the shaft body through-hole (114) is fixedly installed at the bottom end of the linkage movable plate (115); the bottom end of the longitudinal telescopic rod (117) is docked with the drill bit (8) via a docking flange (118).

8. The metal round tube surface drilling processing equipment according to claim 7 is characterized in that: The structural shape of the cross section of the component movable cavity (113) is consistent with the structural shape of the cross section of the linkage movable plate (115), both are non-circular structures, and the structural dimensions of the cross section of the component movable cavity (113) match the structural dimensions of the cross section of the linkage movable plate (115).

9. The metal round tube surface drilling processing equipment according to claim 8, characterized in that: The initial length of the No. 2 coil spring (116) is greater than the depth of the component active cavity (113).

10. The metal round tube surface drilling processing equipment according to claim 9, characterized in that: When the bottom surface of the linkage movable plate (115) contacts the bottom end surface of the linkage movable plate (115), the horizontal height of the bottom of the drill bit (8) is lower than the horizontal height of the bottom of the pneumatic caliper (9); when the upper surface of the linkage movable plate (115) contacts the top end surface of the linkage movable plate (115), the horizontal height of the bottom of the drill bit (8) is higher than the horizontal height of the top of the pneumatic caliper (9).

Images