A drilling device for oil cylinder inlet and outlet

Abstract

The invention relates to the technical field of oil cylinder drilling, and specifically discloses a oil cylinder inlet and outlet drilling device, comprising: a base, a drilling unit is arranged on the base, and a three-grip chuck and a telescopic shaft are coaxially arranged on the base for clamping and positioning the oil cylinder; the base is also provided with a top seat located between the three-grip chuck and the telescopic shaft for supporting the placement of the oil cylinder, and the central axis of the top seat and the central axis of the three-grip chuck are located in the same vertical plane, and the bottom of the top seat is provided with a box body, which can be raised and lowered relative to the base; the oil cylinder inlet and outlet drilling device of the invention automatically adjusts the height of the alignment shaft according to the diameter of the cylindrical oil cylinder, so that when the alignment shaft cooperates with the arc sleeve, the oil cylinder can be accurately coaxially aligned with the three-grip chuck, thereby facilitating the clamping and fixation of the three-grip chuck and the telescopic shaft to the oil cylinder, which can not only improve the clamping accuracy of the cylindrical oil cylinder, but also keep the oil cylinder in a horizontal state in the drilling hole, thereby improving the drilling accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinder drilling, and in particular to an oil cylinder oil inlet and outlet drilling device. Background Art

[0002] The oil cylinder, also known as the hydraulic cylinder, is an actuator in the hydraulic transmission system. Its core function is to convert hydraulic energy into mechanical energy, and to achieve force transmission and motion control by pushing the piston to perform linear reciprocating motion or swinging motion. The cylinder body of the oil cylinder is mostly cylindrical, square, oval, etc. The oil inlet and outlet ports of the cylindrical oil cylinder are usually opened on the sides of the cylinder body at both ends. When drilling, a horizontal drilling machine is mostly used. The cylindrical oil cylinder is fixed horizontally by a three-grip chuck, and the drilling tool is used to perform drilling at both ends.

[0003] Existing cylinder drilling is often unable to automatically complete the clamping and fixing of the cylinder during drilling. Since it is necessary to ensure the coaxial fixation of the cylinder and the three-jaw chuck, the cylinder is mostly clamped and fixed manually, and then the drilling tool is used to drill. Workers are required to constantly adjust the angle of the cylinder during clamping to ensure that the cylinder does not tilt during clamping and affect the drilling accuracy. It relies more on personal experience, and when the cylinder model is large, it often requires multiple people to cooperate to complete the clamping, which is labor-intensive and inefficient, and there are safety hazards. Summary of the Invention

[0004] The present invention provides a device for drilling holes for oil inlet and outlet ports of an oil cylinder, aiming to solve the problem in related technologies that the clamping and fixing of the oil cylinder cannot be completed automatically and is mostly completed manually, and then drilling is performed by a drilling tool.

[0005] The oil cylinder inlet and outlet drilling device of the present invention comprises a base, a drilling unit is arranged on the base, and a three-grip chuck and a telescopic shaft are coaxially arranged on the base for clamping and positioning the oil cylinder;

[0006] The base is also provided with a top seat located between the three-grip chuck and the telescopic shaft, which is used to support the placement of the oil cylinder, and the central axis of the top seat and the central axis of the three-grip chuck are located in the same vertical plane. The bottom of the top seat is provided with a box body, which can be raised and lowered relative to the base;

[0007] Matching alignment shaft and arc sleeve are provided between the box body and the three-grip chuck. The alignment shaft can enter the arc sleeve as the box body rises, so that its center axis is parallel to the center axis of the three-grip chuck in the same horizontal plane.

[0008] A calibration plate and a pressure plate are provided in the top seat. The pressure plate can descend in the top seat when the cylinder is placed, so that the calibration plate slides along the top seat to calibrate the position of the cylinder, so that the center axis of the cylinder and the center axis of the top seat are parallel to the same vertical plane, and the alignment shaft is driven down during the movement of the calibration plate, so that the center axis of the alignment shaft and the center axis of the cylinder are parallel to the same horizontal plane.

[0009] Preferably, a clamping platform and a positioning platform are fixedly mounted on the base, the three-jaw chuck is rotatably assembled on a side of the clamping platform close to the positioning platform, and the telescopic shaft is rotatably assembled on a side of the positioning platform close to the clamping platform.

[0010] Preferably, a side groove is formed at one end of the box body close to the three-grip chuck, an alignment frame is slidably mounted in the side groove, and the alignment shaft is arranged at the outer end of the alignment frame and is located directly below the arc sleeve.

[0011] Preferably, the top seat is V-shaped as a whole, and a transverse groove and a V-shaped groove are provided inside the top seat. The transverse groove is opened in the middle of the top seat along the length direction, and the pressure plate is slidably assembled in the transverse groove. There are multiple V-shaped grooves equidistantly distributed along the length direction of the transverse groove, and all are arranged perpendicular to the transverse groove. The calibration plate is slidably assembled in the V-shaped groove.

[0012] Preferably, a slide bar located in the box body is transversely fixed to the bottom end of the calibration plate, a support plate fixed in the box body is provided on the outside of the slide bar, and an elastic member is provided between the support plate and the calibration plate.

[0013] Preferably, a limit platform located in the box body is fixedly installed at the bottom of the pressure plate, and the side of the limit platform consists of an inclined part and a vertical part. A protrusion is fixedly installed at the end of the slide rod away from the calibration plate, and the end of the protrusion is arranged close to the vertical part.

[0014] Preferably, a sink is provided at the bottom of the limit platform, an upper cylinder is fixedly installed in the sink, a lower cylinder is slidably assembled on the bottom end of the upper cylinder, and the lower cylinder is vertically fixed in the box, and a spring is provided between the lower cylinder and the upper cylinder.

[0015] Preferably, a threaded column is vertically rotated inside the box, a threaded sleeve is threadedly connected to the outside of the threaded column, and the threaded sleeve is fixed to the inner end of the alignment frame, a gear is coaxially fixed to the outside of the threaded column, and a rack is fixedly installed on the calibration plate near the threaded column, and the rack is meshed with the gear.

[0016] Preferably, the drilling unit includes a base, a lifting platform and a drill bit. The base is arranged on the pedestal, the lifting platform is arranged on the base and can be raised and lowered relative to the base, and the drill bit is rotatably assembled at the bottom of the lifting platform.

[0017] Preferably, a receiving groove is provided on the top of the base, the box body is arranged in the receiving groove, a slide rail fixedly mounted on the base is provided on one side of the receiving groove, and the base is slidably assembled on the slide rail.

[0018] When the present invention is in use, the height of the alignment shaft is automatically adjusted by the diameter of the cylindrical oil cylinder, so that when the alignment shaft cooperates with the arc sleeve, the oil cylinder can be accurately coaxially aligned with the three-jaw chuck, thereby facilitating the clamping and fixation of the oil cylinder by the three-jaw chuck and the telescopic shaft, which can not only improve the clamping accuracy of the cylindrical oil cylinder, keep the oil cylinder in a horizontal state in the drill hole, avoid clamping skew, and improve drilling accuracy, but also reduce the difficulty of clamping and positioning the cylindrical oil cylinder, reduce the labor intensity of the user, and improve the clamping efficiency of the cylindrical oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a perspective view of the present invention.

[0020] Figure 2 It is a front view of the present invention.

[0021] Figure 3 It is a three-dimensional diagram of the placement table of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the interior of the placement table of the present invention.

[0023] Figure 5 This invention Figure 4 side view.

[0024] Figure 6 It is a front sectional view of the placement table of the present invention.

[0025] Figure 7 It is a structural schematic diagram of the calibration component of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the alignment frame of the present invention.

[0027] Reference numerals:

[0028] 10. Base; 11. Receiving groove; 12. Slide rail; 20. Clamping and positioning seat; 21. Clamping platform; 22. Three-grip chuck; 23. Positioning platform; 24. Telescopic shaft; 30. Drilling unit; 31. Base; 32. Lifting platform; 33. Drill bit; 40. Placement platform; 41. Box; 411. Side groove; 42. Top seat; 421. Horizontal groove; 422. V-shaped groove; 50. Calibration assembly; 51. Calibration plate; 52. Slide rod ; 53. Support plate; 531. Bump; 54. Elastic part; 60. Pushing assembly; 61. Pressing plate; 611. Support plate; 62. Limiting platform; 621. Sink; 63. Telescopic cylinder; 631. Lower cylinder; 632. Upper cylinder; 633. Spring; 70. Alignment assembly; 71. Alignment frame; 72. Alignment shaft; 73. Arc sleeve; 80. Transmission assembly; 81. Threaded column; 82. Threaded sleeve; 83. Gear; 84. Rack. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 8 As shown, the oil cylinder inlet and outlet drilling device of the present invention includes a base 10, a clamping and positioning seat 20, a drilling unit 30, a placement table 40, a calibration component 50, a pushing component 60, an alignment component 70, and a transmission component 80. The clamping and positioning seat 20 and the drilling unit 30 are arranged above the base 10, and can be drilled by the drilling unit 30 after the clamping and positioning seat 20 fixes the oil cylinder. The placement table 40 is arranged in the machine base 10 to support the oil cylinder. When the oil cylinder is placed, the calibration component 50 inside the placement table 40 cooperates with the pushing component 60 to calibrate the position of the oil cylinder, and the transmission component 80 in the placement table 40 drives the alignment component 70 to move during the oil cylinder calibration, and the alignment component 70 cooperates with the clamping and positioning seat 20 on the placement table 40 to quickly fix the oil cylinder.

[0031] refer to Figure 1 and Figure 2 A receiving groove 11 is provided on the top of the base 10 , and a slide rail 12 fixedly mounted on the base 10 is provided on one side of the receiving groove 11 .

[0032] refer to Figure 1 and Figure 2 The clamping and positioning seat 20 includes a clamping platform 21, a three-claw chuck 22, a positioning platform 23 and a telescopic shaft 24. The clamping platform 21 and the positioning platform 23 are both fixedly mounted on the base 10. The three-claw chuck 22 is rotatably assembled on the side of the clamping platform 21 close to the positioning platform 23 and is used to clamp and fix the oil cylinder. The telescopic shaft 24 is rotatably assembled on the side of the positioning platform 23 close to the clamping platform 21 and is coaxially arranged with the three-claw chuck 22. It can be telescopic and then tightened to the tail end of the oil cylinder to reinforce the oil cylinder.

[0033] refer to Figure 1 and Figure 2 The drilling unit 30 includes a base 31, a lifting platform 32 and a drill bit 33. The base 31 is slidably assembled on the slide rail 12 and can move above the base 10 along the slide rail 12. The lifting platform 32 is set on the base 31 and can be raised and lowered relative to the base 31. The drill bit 33 is rotatably assembled at the bottom of the lifting platform 32 and can be raised and lowered under the drive of the lifting platform 32, thereby drilling the cylinder.

[0034] refer to Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4The placement table 40 is composed of a box body 41 and a top seat 42. The box body 41 is arranged inside the accommodating groove 11, and a cylinder is provided at the bottom of the box body 41, which can drive the box body 41 to rise and fall into the accommodating groove 11. The top seat 42 is V-shaped as a whole and is fixedly assembled on the top of the box body 41. The center axis of the top seat 42 is located in the same vertical plane as the center axis of the three-grip chuck 22, which is used to support the cylinder so that the center axis of the cylinder can be located in the same vertical plane as the center axis of the three-grip chuck 22 after the cylinder is placed.

[0035] refer to Figure 1 、 Figure 3 as well as Figure 5 A lateral groove 411 is provided at one end of the box body 41 close to the three-grab chuck 22, and a transverse groove 421 and a V-shaped groove 422 are provided inside the top seat 42 to connect the inside and the outside of the box body 41. The transverse groove 421 is opened in the middle of the top seat 42 along the length direction, and there are multiple V-shaped grooves 422 evenly distributed along the length direction of the transverse groove 421, and the multiple V-shaped grooves 422 are all arranged perpendicular to the transverse groove 421.

[0036] refer to Figure 3 、 Figure 4 、 Figure 5 as well as Figure 7 , multiple groups of calibration components 50 are respectively arranged in multiple V-shaped grooves 422, and the calibration components 50 include a calibration plate 51, a sliding rod 52, a support plate 53 and an elastic member 54. The calibration plate 51 is slidably assembled inside the V-shaped groove 422, and the bottom end extends to the inside of the box body 41, the sliding rod 52 is laterally fixed on the calibration plate 51, the support plate 53 is fixedly installed inside the box body 41, and the end of the sliding rod 52 away from the calibration plate 51 passes through the support plate 53 and is fixed with a protrusion 531, and the elastic member 54 is arranged between the calibration plate 51 and the support plate 53, and is used to apply a pulling force to the calibration plate 51 in the direction of the horizontal groove 421, so that the calibration plate 51 slides along the V-shaped groove 422 toward the horizontal groove 421. In this scheme, the elastic member 54 is specifically a tension spring, which is sleeved on the outside of the sliding rod 52. In other schemes, the elastic member 54 can also be an elastic rope, a memory spring, etc.

[0037] refer to Figure 5The pushing assembly 60 includes a pressure plate 61, a limiting platform 62 and a telescopic cylinder 63. The pressure plate 61 is slidably assembled in the horizontal groove 421 and can slide up and down in the horizontal groove 421. The limiting platform 62 is located inside the box body 41 and is fixed to the pressure plate 61. It can rise and fall with the sliding pressure plate 61. The left and right side surfaces of the limiting platform 62 (i.e., the side surface close to the calibration plate 51) are composed of an inclined portion and a vertical portion, and the end of the protrusion 531 is close to the vertical portion. The vertical portion of the limiting platform 62 limits the protrusion 531, so that the calibration plate 51 remains away from the support plate 53 to stretch the elastic member 54. The telescopic cylinder 63 is arranged between the limiting platform 62 and the box body 41 and can be telescopic to apply a vertical thrust to the limiting platform 62, so that the pressure plate 61 remains in the horizontal groove 42 1 is extended to the top of the top seat 42. After the oil cylinder is placed on the top seat 42, the pressure plate 61 is pressed into the box body 41, causing the limit platform 62 to descend and compress the telescopic cylinder 63. As the limit platform 62 descends, the inclined portion moves to the side of the protrusion 531 and gradually releases the obstruction of the protrusion 531, allowing the protrusion 531 to move along the descending inclined portion, and then the elastic member 54 can pull the calibration plate 51 along the V-shaped groove 422 to approach the oil cylinder, calibrating the position of the oil cylinder so that the central axis of the oil cylinder and the central axis of the top seat 42 are parallel to the same vertical plane. After the oil cylinder is removed from the top seat 42, the pressure plate 61 without pressure can be lifted and reset under the push of the telescopic cylinder 63, causing the limit platform 62 to push the protrusion 531 again, causing the calibration plate 51 to slide and reset along the V-shaped groove 422.

[0038] refer to Figure 5 and Figure 6 The top of the pressure plate 61 is fixedly installed with a supporting plate 611, which can increase the contact area with the oil cylinder, so that the pressure plate 61 can be better pressed into the box body 41 when the oil cylinder is placed. A sink groove 621 is provided at the bottom of the limit platform 62. The telescopic cylinder 63 includes a lower cylinder 631, an upper cylinder 632 and a spring 633. The lower cylinder 631 is vertically fixed to the inside of the box body 41, and the top of the upper cylinder 632 is fixedly installed in the sink groove 621. The bottom end of the upper cylinder 632 is slidably assembled in the lower cylinder 631. The spring 633 is arranged between the lower cylinder 631 and the upper cylinder 632, and the elastic force of the spring 633 is greater than the elastic force of the elastic member 54. The upper cylinder 632 slides and retracts in the lower cylinder 631 under the action of the spring 633, so as to push the limit platform 62 to lift and reset.

[0039] refer to Figure 1 、 Figure 2 as well as Figure 8The alignment assembly 70 includes an alignment frame 71, an alignment shaft 72, and an arcuate sleeve 73. The alignment frame 71 is slidably assembled in the side groove 411. The alignment shaft 72 is arranged at the outer end of the alignment frame 71 (the end located outside the box body 41). The arcuate sleeve 73 is fixedly mounted on one side of the three-grip chuck 22, directly above the alignment shaft 72. The arcuate sleeve 73 is adapted to the shape and size of the alignment shaft 72 and can limit the raised alignment shaft 72 so that after the alignment shaft 72 fully enters the arcuate sleeve 73, its center axis is parallel to the center axis of the three-grip chuck 22 and is in the same horizontal plane. The position of the alignment shaft 72 is adapted to the calibration plate 51. When the calibration plate 51 and the alignment shaft 72 are in the initial position, the center axis of the oil cylinder tangent to the calibration plate 51 is parallel to the center axis of the alignment shaft 72 and is in the same horizontal plane.

[0040] refer to Figure 4 and Figure 5 The transmission assembly 80 includes a threaded column 81, a threaded sleeve 82, a gear 83 and a rack 84. The threaded column 81 is vertically rotated and assembled inside the box body 41. The threaded sleeve 82 is threadedly connected to the outside of the threaded column 81 and is fixed to the inner end of the alignment frame 71 (the end located inside the box body 41). The gear 83 is coaxially fixed to the outside of the threaded column 81. The rack 84 is fixedly installed on the calibration plate 51 near the threaded column 81 and meshes with the gear 83. It can move the calibration plate 51. When it moves, it drives the rack 84 to push the gear 83 to rotate, so that the threaded column 81 pushes the threaded sleeve 82 to move, driving the alignment frame 71 to rise and fall, so that the alignment shaft 72 can rise and fall synchronously with the movement of the calibration plate 51. When the calibration plate 51 completes the cylinder calibration, the alignment shaft 72 can stay on the side of the cylinder, and its center axis is parallel to the horizontal plane with the center axis of the cylinder. Then, when the alignment shaft 72 is lifted and enters the arc sleeve 73, the cylinder can be coaxial with the three-jaw chuck 22 to facilitate the positioning drilling of the cylinder.

[0041] Working principle: The oil cylinder is placed above the top seat 42, and the pressure plate 61 is pressed down into the box body 41. The pressure plate 61 drives the limit platform 62 to descend to compress the telescopic cylinder 63, so that the inclined portion moves to the side of the protrusion 531 and gradually releases the obstruction of the protrusion 531, so that the elastic member 54 pulls the calibration plate 51 along the V-shaped groove 422 to approach the oil cylinder, and pushes the oil cylinder to the middle part of the top seat 42. The center axis of the oil cylinder is parallel to the center axis of the top seat 42 in the same vertical plane. Since the center axis of the top seat 42 is parallel to the center axis of the three-grab chuck 22 in the same vertical plane, the center axis of the oil cylinder is parallel to the center axis of the three-grab chuck 22 in the same vertical plane.

[0042] When the calibration plate 51 moves, the rack 84 pushes the gear 83 to rotate, causing the threaded column 81 to rotate and push the threaded sleeve 82 to descend, causing the alignment frame 71 and the alignment shaft 72 to descend, so that the calibration plate 51 and the alignment shaft 72 move synchronously and move the same distance. When the calibration plate 51 is attached to the side of the cylinder, the center axis of the alignment shaft 72 is just parallel to the center axis of the cylinder and is in the same horizontal plane.

[0043] After the box body 41 is lifted and the alignment shaft 72 is clamped into the arc sleeve 73, the center axis of the alignment shaft 72 and the center axis of the three-grip chuck 22 are parallel to the same horizontal plane, so that the cylinder and the three-grip chuck 22 remain coaxial, and then the telescopic shaft 24 is extended to push the cylinder onto the three-grip chuck 22, and the three-grip chuck 22 clamps the cylinder, and with the cooperation of the telescopic shaft 24, the cylinder is supported and fixed.

[0044] The box body 41 is lowered and separated from the oil cylinder, and the drilling unit 30 drills the oil inlet and outlet of the oil cylinder. After the pressure plate 61 loses the pressure of the oil cylinder, the telescopic cylinder 63 extends and pushes the limit platform 62 to reset, so that the pressure plate 61 is extended to above the top seat 42 again. At the same time, the limit platform 62 pushes the protrusion 531 to make the slide rod 52 slide back, driving the calibration plate 51 to reset, so that the calibration plate 51 drives the alignment frame 71 and the alignment shaft 72 to reset, so as to support the next oil cylinder.

[0045] In the present invention, the height of the alignment shaft 72 is automatically adjusted by the diameter of the cylindrical cylinder, so that when the alignment shaft 72 cooperates with the arc sleeve 73, the cylinder can be accurately coaxially aligned with the three-jaw chuck 22, which is convenient for the three-jaw chuck 22 and the telescopic shaft 24 to clamp and fix the cylinder. It can not only improve the clamping accuracy of the cylindrical cylinder, keep the cylinder in a horizontal state in the drill hole, avoid clamping crookedness, and improve drilling accuracy, but also reduce the difficulty of clamping and positioning of the cylindrical cylinder, reduce the labor intensity of the user, and improve the clamping efficiency of the cylindrical cylinder.

[0046] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drilling device for an oil cylinder inlet and outlet, comprising a base (10), a drilling unit (30) being arranged on the base (10), characterized in that: A three-grip chuck (22) and a telescopic shaft (24) are coaxially arranged on the base (10) for clamping and positioning the oil cylinder; The base (10) is also provided with a top seat (42) located between the three-grip chuck (22) and the telescopic shaft (24) for supporting the placement of the oil cylinder, and the central axis of the top seat (42) and the central axis of the three-grip chuck (22) are located in the same vertical plane, and a box (41) is provided at the bottom of the top seat (42) so as to be able to be raised and lowered relative to the base (10); A matching alignment shaft (72) and an arc-shaped sleeve (73) are provided between the box body (41) and the three-grip chuck (22). The alignment shaft (72) can enter the arc-shaped sleeve (73) as the box body (41) rises, so that its central axis and the central axis of the three-grip chuck (22) are parallel to the same horizontal plane. A calibration plate (51) and a pressure plate (61) are provided in the top seat (42). The pressure plate (61) can be lowered in the top seat (42) when the oil cylinder is placed, so that the calibration plate (51) slides along the top seat (42) to calibrate the position of the oil cylinder, so that the center axis of the oil cylinder and the center axis of the top seat (42) are parallel to the same vertical plane, and the alignment shaft (72) is driven to descend during the movement of the calibration plate (51), so that the center axis of the alignment shaft (72) and the center axis of the oil cylinder are parallel to the same horizontal plane; The box body (41) is provided with a side groove (411) at one end close to the three-grip chuck (22), and a positioning frame (71) is slidably mounted in the side groove (411). The positioning shaft (72) is arranged at the outer end of the positioning frame (71) and is located directly below the arc sleeve (73); The top seat (42) is V-shaped as a whole, and a transverse groove (421) and a V-shaped groove (422) are provided inside the top seat (42), the transverse groove (421) is provided in the middle of the top seat (42) along the length direction, the pressure plate (61) is slidably assembled in the transverse groove (421), a plurality of V-shaped grooves (422) are evenly distributed along the length direction of the transverse groove (421), and are all arranged perpendicular to the transverse groove (421), and the calibration plate (51) is slidably assembled in the V-shaped groove (422); A slide bar (52) located in the box body (41) is laterally fixed to the bottom end of the calibration plate (51), a support plate (53) fixed in the box body (41) is provided outside the slide bar (52), and an elastic member (54) is provided between the support plate (53) and the calibration plate (51); A limit platform (62) located in the box body (41) is fixedly installed at the bottom of the pressure plate (61), and the side of the limit platform (62) consists of an inclined portion and a vertical portion. A protrusion (531) is fixedly installed at one end of the slide rod (52) away from the calibration plate (51), and the end of the protrusion (531) is arranged close to the vertical portion. A threaded column (81) is provided inside the box body (41) for vertical rotation. A threaded sleeve (82) is connected to the outside of the threaded column (81) through a threaded connection. The threaded sleeve (82) is fixed to the inner end of the alignment frame (71). A gear (83) is coaxially fixed to the outside of the threaded column (81). A rack (84) is fixedly installed on the calibration plate (51) near the threaded column (81), and the rack (84) is meshed with the gear (83).

2. The oil cylinder inlet and outlet drilling device according to claim 1, characterized in that: A clamping platform (21) and a positioning platform (23) are fixedly mounted on the base (10); a three-grip chuck (22) is rotatably mounted on a side of the clamping platform (21) close to the positioning platform (23); and a telescopic shaft (24) is rotatably mounted on a side of the positioning platform (23) close to the clamping platform (21).

3. The oil cylinder inlet and outlet drilling device according to claim 1, characterized in that: A sink groove (621) is provided at the bottom of the limiting platform (62), an upper cylinder (632) is fixedly installed in the sink groove (621), a lower cylinder (631) is slidably mounted on the bottom end of the upper cylinder (632), and the lower cylinder (631) is vertically fixed in the box body (41), and a spring (633) is provided between the lower cylinder (631) and the upper cylinder (632).

4. The oil cylinder inlet and outlet drilling device according to claim 1, characterized in that: The drilling unit (30) includes a base (31), a lifting platform (32), and a drill bit (33). The base (31) is arranged on the base (10), the lifting platform (32) is arranged on the base (31) and can be raised and lowered relative to the base (31), and the drill bit (33) is rotatably assembled at the bottom of the lifting platform (32).

5. The oil cylinder inlet and outlet drilling device according to claim 4, characterized in that: A receiving groove (11) is provided on the top of the base (10), the box body (41) is arranged in the receiving groove (11), a slide rail (12) fixedly mounted on the base (10) is provided on one side of the receiving groove (11), and the base (31) is slidably assembled on the slide rail (12).

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