Shaft sleeve drilling equipment

Abstract

The invention relates to the field of workpiece drilling, in particular to shaft sleeve drilling equipment. Comprising a sleeve table, a clamping sleeve part arranged on the sleeve table and used for clamping and fixing a shaft sleeve, an electric drill body used for forming a radial hole in the inner wall of the shaft sleeve, and an electric drill body moving part used for driving the electric drill body to enter the shaft sleeve for drilling operation. The total distance laser sensor is used for controlling the distance L total between the initial position after the electric drill body enters the shaft sleeve and the position of the electric drill body when the electric drill body completes drilling; the initial distance laser sensor is used for detecting the distance L initial between the initial position of the electric drill body and the position to be drilled of the shaft sleeve; the drilling depth of the radial hole is defined as Z, and L < total > = Z + L < initial >, so that it is guaranteed that in the drilling process of each radial hole, the finally obtained depth value of the radial hole is not prone to having a large gap with a preset value, and the influence on the quality of the radial hole is reduced.

Description

Technical Field

[0001] The present application relates to the field of workpiece drilling, and in particular to a sleeve drilling device. Background Art

[0002] The sleeve is an important component that allows the shaft to rotate with little wear and high efficiency. In order to improve the lubrication performance of the sleeve on the shaft, some shafts will have radial holes on the inner wall and put graphite in. For example, a sustainable lubricating sleeve with announcement number CN221097211U has corresponding radial holes on both the sleeve body and the outer sleeve. The radial holes are evenly arranged in several circles along the axial direction of the sleeve body, and each circle of radial holes is evenly arranged around the axis of the sleeve body. The radial holes of the sleeve body are through, and the radial holes on the inner wall side of the outer sleeve are connected to the corresponding oil storage chamber of the outer sleeve.

[0003] In order to carry out precision machining of radial holes in the outer sleeve, it is necessary to measure the drilling depth of the drill bit more accurately. For example, a laser sensor hole detection device with announcement number CN207688839U uses a laser displacement sensor to monitor the drilling depth in real time during the drilling process to ensure the drilling accuracy.

[0004] With respect to the above-mentioned related technologies, the laser displacement sensor detects the entire moving distance of the drill bit, which includes the distance between the initial position of the drill bit and the sleeve. The distance between the initial position of the drill bit and the sleeve will inevitably change during each drilling process. As a result, when the laser displacement sensor is used to detect the fixed value of the moving distance of the drill bit, the drilling depth of the radial hole is difficult to accurately control, which makes the processing quality of the radial hole easily affected. Summary of the invention

[0005] In order to reduce the impact on the processing quality of radial holes, the present application provides a sleeve drilling device.

[0006] The present application provides a shaft sleeve drilling device that adopts the following technical solution.

[0007] A sleeve drilling device comprises a sleeve platform, a sleeve part arranged on the sleeve platform and clamping and fixing the sleeve, an electric drill body for forming radial holes on the inner wall of the sleeve, an electric drill body moving part for driving the electric drill body into the sleeve to perform drilling operations, and a distance L between the initial position of the electric drill body after entering the sleeve and the position of the electric drill body when the electric drill body completes drilling. 总 The total distance laser sensor for controlling the distance L between the initial position of the electric drill body and the position of the sleeve to be drilled 初 The initial distance laser sensor for detection; the drilling depth of the radial hole is defined as Z, then L 总 =Z+L 初 .

[0008] By adopting the above technical solution, L will be carried out before drilling. 初 The actual L before each drilling is measured. 初 To obtain L 总 , so that the depth of the radial hole formed by each drilling is not likely to deviate greatly from the preset value, thereby reducing the impact on the forming quality of the radial hole.

[0009] Optionally, the moving part of the electric drill body includes a side platform, a cylinder seat slidably connected to the side platform and capable of changing height, a vertical cylinder arranged on the side platform to move the cylinder seat, an axial cylinder arranged on the cylinder seat and having a power rod that moves along the axial direction of the sleeve, a middle rod detachably connected to the power rod of the axial cylinder, a radial displacement block slidably connected to the middle rod along the radial direction of the sleeve and detachably connected to the electric drill body, and a radial displacement cylinder arranged on the middle rod to move the radial displacement block, and the initial distance laser sensor is located at one end of the middle rod entering the sleeve.

[0010] By adopting the above technical solution, the electric drill body can move freely in the plane where the sleeve is located, so that the electric drill body can enter the sleeves of different specifications to form radial holes, thereby improving applicability.

[0011] Optionally, the radial displacement cylinder power rod is detachably connected to an axial push rod that can abut against the radial displacement block. The axial push rod is slidably connected to the middle rod along the moving direction of the axial cylinder power rod. The abutting surfaces of the axial push rod and the radial displacement block are both inclined surfaces so that the axial push rod can push the radial displacement block to move. A return spring is detachably connected between the radial displacement block and the middle rod to force the radial displacement block to move toward the axis of the middle rod. The total distance laser sensor detection end is aligned with the end of the axial push rod exposed to the middle rod.

[0012] By adopting the above technical solution, the movement of the shaft push rod along the axial direction of the sleeve can make the electric drill body move radially along the sleeve, and the total distance laser sensor can be set outside to detect the movement distance of the shaft push rod, so as to know the radial movement distance of the electric drill body along the sleeve, so as to reduce the volume of one end of the middle rod entering the sleeve, so that the present application can be suitable for drilling sleeves with the smallest possible inner diameter.

[0013] Optionally, a plurality of the radial displacement blocks are evenly arranged around the center line of the middle rod, the number of the radial displacement blocks is an even number, and each radial displacement block is provided for installation of an electric drill body.

[0014] By adopting the above technical solution, when the electric drill body is drilling, the middle rod will be subjected to a certain radial pressure. By arranging the electric drill body symmetrically, the radial pressures generated by the two relative electric drill bodies when drilling synchronously can offset each other, thereby reducing the deformation of the middle rod under long-term work, and can also form multiple radial holes at one time, thereby improving processing efficiency.

[0015] Optionally, an end face laser sensor is detachably connected to the center of the end face of one end of the middle rod entering the sleeve, and a positioning hole is opened in the position of the sleeve part opposite to the axis of the sleeve, and several initial distance laser sensors are evenly arranged around the center line of the middle rod.

[0016] By adopting the above technical solution, after the middle rod enters the sleeve according to a predetermined path, the end face laser sensor will detect whether it has been aligned with the positioning hole, and multiple initial distance laser sensors will simultaneously detect the distance to the inner wall of the sleeve to ensure that the center line of the middle rod is consistent with the center line of the sleeve, so that in the subsequent radial hole forming process, the depth of the radial holes formed by different electric drill bodies is not prone to a large difference.

[0017] Optionally, one initial distance laser sensor is provided for each electric drill body, all the initial distance laser sensors are detachably connected to the same distance adjusting ring, each distance adjusting ring is slidably connected to the middle rod along the center line of the middle rod, and a distance adjusting electric cylinder is provided in the middle rod to move the distance adjusting ring, and the distance between the electric drill body and the initial distance laser sensor is equal to the distance between two adjacent rows of radial holes in the axial direction of the sleeve.

[0018] By adopting the above technical solution, each radial hole forming position on the inner wall of the sleeve will be measured by the initial distance laser sensor. 初 The depth of each radial hole is not likely to have a large deviation, and the L of each remaining radial hole except the first circle of radial holes is 初 The detection work can be carried out synchronously during the forming process of the corresponding previous circle of radial holes to improve the processing efficiency. In addition, the distance between the initial distance laser sensor and the electric drill body can be adaptively adjusted to better suit the processing of sleeves with different distances between two adjacent circles of radial holes.

[0019] Optionally, the clamping part includes a rotating part rotatably connected to the sleeve, a rotating part motor disposed on the sleeve and causing the rotating part to rotate, a plurality of outer clamping jaws slidably connected to the rotating part and capable of abutting against the outer surface of the sleeve, an outer plane threaded disk rotatably connected to the rotating part and threadedly connected to all the outer clamping jaws, an outer ring gear coaxially fixedly connected to the circumferential surface of the outer plane threaded disk, an outer gear rotatably connected to the rotating part and meshing with the outer ring gear, and an outer clamping motor driving the outer gear to rotate.

[0020] By adopting the above technical solution, the sleeve is placed between all the outer jaws to be clamped and fixed, and after the sleeve is clamped, the rotating part rotates to make the sleeve rotate around its own axis, so that when the number of the electric drill body is less than the number of radial holes in each circle, it is more convenient to form the radial holes in each circle of the sleeve.

[0021] Optionally, the rotating member is slidably connected to several internal expansion blocks that can abut against the inner surface of the sleeve, and the rotating member is rotatably connected to an inner planar threaded disk that meshes with all the internal expansion blocks. The circumferential surface of the inner planar threaded disk is coaxially fixedly connected to an inner ring gear, the inner ring gear meshes with an inner gear rotatably connected to the rotating member, and the rotating member is provided with an internal expansion motor that drives the inner gear to rotate.

[0022] By adopting the above technical scheme, the radial holes of the shaft sleeve divided into inner and outer layers can be formed synchronously after assembly, which not only improves the processing efficiency, but also makes it difficult for the inner and outer layers of the shaft sleeve to rotate relative to each other during the radial hole forming process of the inner and outer layers of the shaft sleeve. The radial holes between the inner and outer layers of the same shaft sleeve can be better aligned and connected, which helps to reduce the impact on the processing quality of the radial holes of the inner and outer layers of the shaft sleeve.

[0023] Optionally, the outer clamping jaw is fixedly connected with an end abutment piece capable of abutting against the end surface of the sleeve.

[0024] By adopting the above technical solution, the end face of the sleeve is not easily in direct contact with the rotating part, so as to ensure that there is a sufficient distance between the sleeve and the rotating part, so that the end of the middle rod can be partially exposed at the end of the sleeve close to the rotating part and will not come into contact with the rotating part, thereby reducing the possibility of damage to the middle rod.

[0025] Optionally, the end abutment includes a fixed rod fixedly connected to the outer clamp, a moving rod radially slidably connected to the fixed rod and capable of abutting against the end surface of the sleeve, an adjusting screw rotatably connected to the fixed rod and threadedly connected to the moving rod, and a rotating block rotatably connected to the fixed rod and coaxially fixedly connected to the adjusting screw.

[0026] By adopting the above technical solution, the position of the moving rod on the fixed rod can be adjusted according to the sleeves with different wall thicknesses, so that the moving rod can have as much contact area as possible with the end face of the sleeve, while the moving rod is not easy to get too close to the axis of the sleeve, so as to reduce the possibility of conflict between the middle rod and the moving rod.

[0027] In summary, the present application includes at least the following beneficial effects.

[0028] Before drilling, L 初 The actual L before each drilling is measured. 初 To obtain L 总 , so that the depth of the radial hole formed by each drilling is not likely to deviate greatly from the preset value, thereby reducing the impact on the forming quality of the radial hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of this application; Figure 2 It is a structural schematic diagram showing a partial section of the rotating part toward the side of the electric drill body; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of a cross-section of the middle rod.

[0030] Explanation of reference numerals: 1. Jacket; 2. Electric drill body; 21. Adjustable distance ring; 22. Adjustable distance electric cylinder; 23. Rotating element; 24. Rotating element motor; 3. Moving part of electric drill body; 31. Inner plane threaded disk; 32. Inner ring gear; 33. Inner gear; 34. Inner expansion motor; 35. End abutment; 36. Fixed rod; 37. Moving rod; 38. Adjusting screw; 39. Rotating block; 4. Total distance laser sensor; 41. Reset Spring; 42. End face laser sensor; 43. Positioning hole; 44. External clamping claw; 45. External plane threaded disk; 46. Outer ring gear; 47. Outer gear; 48. External clamping motor; 49. Inner expansion block; 5. Initial distance laser sensor; 51. Set; 52. Axial cylinder; 53. Middle rod; 54. Radial displacement block; 55. Side table; 56. Cylinder seat; 57. Vertical cylinder; 58. Radial displacement cylinder; 59. Shaft push rod. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] The present application embodiment discloses a sleeve drilling device, referring to Figure 1 , including a sleeve platform 51 placed on the ground, the sleeve platform 51 is equipped with a sleeve part 1 for clamping and fixing the sleeve, an electric drill body moving part 3 is provided on the ground on one side of the sleeve platform 51, an electric drill body 2 is present at one end of the sleeve away from the sleeve platform 51, the drill bit direction of the electric drill body 2 is consistent with the radial direction of the sleeve, and the electric drill body moving part 3 enables the electric drill body 2 to move in a vertical plane, so that the electric drill body 2 can enter or move out of the sleeve to perform drilling operations.

[0033] Reference Figure 2 and Figure 3The jacket part 1 includes a rotating member 23 rotatably connected to a sleeve 51, the rotating axis of the rotating member 23 is consistent with the axis of the sleeve, and the sleeve 51 is detachably connected to a rotating member motor 24 that transmits power through gear meshing to drive the rotating member 23 to rotate. The rotating member 23 is slidably connected to at least three outer clamping jaws 44 near the end surface of the sleeve. In this embodiment, the number of outer clamping jaws 44 can be three, and the moving direction of the outer clamping jaws 44 is the radial direction of the sleeve. All outer clamping jaws 44 are evenly arranged around the axis of the rotating member 23. An outer plane threaded disk 45 is coaxially rotatably connected inside the rotating member 23, and the outer plane threaded disk 45 is threadedly connected to all the outer clamping jaws, so that all the outer clamping jaws 44 can move synchronously to clamp or release the outer surface of the sleeve. An outer ring gear 46 is coaxially fixedly connected to the outer surface of the outer plane threaded disk 45, and the outer ring gear 46 is meshed with an outer gear 47 rotatably connected to the rotating member 23. The rotating member 23 is detachably connected to an outer clamping motor 48 whose output shaft is coaxially detachably connected to the outer gear 47.

[0034] Reference Figure 2 and Figure 3 The surface of the rotating member 23 where the outer clamping jaws 44 are provided is slidably connected with at least three inner expansion blocks 49. The number of the inner expansion blocks 49 can be consistent with the number of the outer clamping jaws 44. Each inner expansion block 49 corresponds to an outer clamping jaw 44. The straight line where the moving direction of each inner expansion block 49 is located is consistent with the straight line where the moving direction of the corresponding outer clamping jaw 44 is located, so that the inner expansion blocks 49 and the outer clamping jaws 44 are in one-to-one correspondence with each other at the relative positions on the inner and outer sides of the sleeve, reducing the possibility of deformation of the sleeve under the action of shear force. The rotating member 23 is coaxially connected with an inner plane threaded disk 31, the outer diameter of the inner plane threaded disk 31 is smaller than the inner diameter of the outer plane threaded disk 45, and the inner plane threaded disk 31 is threadedly connected to all the inner expansion blocks 49. The inner ring gear 32 is coaxially fixedly connected to the outer circumferential surface of the inner plane threaded disk 31, and the inner ring gear 32 is meshed with an inner side gear 33 rotatably connected to the inside of the rotating member 23, and the rotating member 23 is detachably connected to an inner expansion motor 34 whose output shaft is coaxially detachably connected to the inner side gear 33. In addition, an electric slip ring is arranged between the rotating member 23 and the sleeve 51 to supply power to the inner expansion motor 34 and the outer clamping motor 48 during the process of rotating with the rotating member 23.

[0035] Since the shaft sleeve of the present application is assembled into two layers, inner and outer layers, in order to simultaneously process the radial holes of the inner and outer layers of the shaft sleeve, the outer layer of the shaft sleeve is fixed with the outer clamp 44, and the inner layer of the shaft sleeve is fixed with the inner expansion block 49 to prevent the inner and outer layers of the shaft sleeve from relative rotation or movement during the drilling process, so as to ensure that the radial holes formed by the inner and outer layers of the shaft sleeve can be aligned and connected.

[0036] Reference Figure 2 and Figure 3The moving part 3 of the electric drill body includes a side platform 55 placed on the ground. The upper surface of the side platform 55 is slidably connected to a cylinder seat 56 in the vertical direction. The side platform 55 is detachably connected to a vertical cylinder 57 whose power rod is detachably connected to the cylinder seat 56. The cylinder seat 56 is detachably connected to an axial cylinder 52 whose power rod moving direction is consistent with the axis direction of the rotating member 23. The power rod of the axial cylinder 52 is detachably connected to a middle rod 53. The middle rod 53 can enter the sleeve at one end away from the axial cylinder 52. An end laser sensor 42 is detachably connected to the center of the end face of the middle rod 53 close to the rotating member 23. A positioning hole 43 is provided at the center position of the end face of the rotating member 23 facing the middle rod 53, so that after the vertical cylinder 57 and the axial cylinder 52 send one end of the middle rod 53 into the sleeve along a predetermined path, the center axis of the middle rod 53 can be consistent with the axis of the rotating member 23. In addition, a distance adjusting ring 21 is coaxially mounted on the outer circumferential wall of one end of the middle rod 53 close to the rotating member 23. The distance adjusting ring 21 is evenly and detachably connected with several initial distance laser sensors 5 around its own axis. This embodiment is described by taking two initial distance laser sensors 5 as an example. Each initial distance laser sensor 5 detects the distance between itself and the inner wall of the sleeve. The initial distance laser sensor 5 and the end face laser sensor 42 are electrically connected to the external controller, so that the subsequent drilling operation will be performed only when the distance values ​​detected by all the initial distance laser sensors 5 are equal and the distance value detected by the end face laser sensor 42 is equal to the distance value preset in the external controller.

[0037] Reference Figure 4 , a shaft push rod 59 is coaxially slidably connected inside the middle rod 53, and the shaft push rod 59 can be exposed at one end of the middle rod 53 close to the axial cylinder 52. A radial displacement cylinder 58 is detachably connected to one end of the middle rod 53 close to the axial cylinder 52, and the power rod of the radial displacement cylinder 58 and the circumferential outer wall of the shaft push rod 59 are fixed by a connector. The middle rod 53 can enter the circumferential outer wall of one end of the sleeve and is slidably connected with several radial displacement blocks 54. This embodiment is described by taking two radial displacement blocks 54 as an example. Each radial displacement block 54 moves radially along the middle rod 53, and each radial displacement block 54 is detachably connected to an electric drill body 2 at one end of the middle rod 53 exposed outside. The shaft push rod 59 can abut against all the radial displacement blocks 54, and the surfaces where the shaft push rod 59 and the radial displacement blocks 54 abut are all inclined, so that when the shaft push rod 59 moves toward the rotating member 23, the radial displacement block 54 can move outward from the middle rod 53. In addition, a return spring 41 is provided between the radial displacement block 54 and the inner wall of the middle rod 53, and the return spring 41 forces the radial displacement block 54 to move toward the axis of the middle rod 53, so that the radial displacement block 54 always maintains a close fit with the shaft push rod 59. At the same time, the middle rod 53 is detachably connected with a total distance laser sensor 4 for detecting the end of the middle rod 53 exposed to the shaft push rod 59, and the total distance laser sensor 4 is electrically connected to an external controller.

[0038] When the middle rod 53 enters the sleeve and all the initial distance laser sensors 5 and the end surface laser sensors 42 pass the detection, the radial displacement cylinder 58 starts to operate. In addition, the position of the electric drill body 2 after the middle rod 53 stops moving and the radial displacement cylinder 58 has not yet started to operate is the initial position, and the detection end of the initial distance laser sensor 5 is flush with one end of the drill bit at the initial position of the electric drill body 2, so that the initial distance laser sensor 5 can detect the distance L between the initial position of the electric drill body 2 and the position of the sleeve to be drilled. 初 The external controller presets the depth of the radial hole to be opened in the sleeve as Z, then the distance L between the initial position of the electric drill body 2 and the position of the electric drill body 2 when the electric drill body 2 completes drilling is 总 =Z+L 初 , so that the external controller can obtain the L at each drilling 总 Then, according to the L stored in the external controller 总 A one-to-one correspondence table between each value and each value of the shaft push rod 59, to obtain the required moving distance L of the shaft push rod 59 during each drilling 轴 , so that the moving distance of the shaft push rod 59 detected by the total distance laser sensor 4 and L 轴 When they are equal, the external controller stops the operation of the radial displacement cylinder 58.

[0039] Reference Figure 4 The number of initial distance laser sensors 5 and the number of electric drill bodies 2 are consistent, and in the axial direction of the middle rod 53, each initial distance laser sensor 5 is aligned with an electric drill body 2, and the initial distance laser sensor 5 is closer to the rotating part 23 than the electric drill body 2. The spacing between the initial distance laser sensor 5 and the electric drill body 2 is equal to the spacing between two adjacent circles of radial holes that need to be opened in the sleeve, so that when a part of the radial holes in one circle are formed in the sleeve each time, the initial distance laser sensor 5 can detect the L of the corresponding part of the radial holes in the next circle. 初 At the same time, the distance adjusting ring 21 is connected to the middle rod 53 by sliding along the axis direction of the middle rod 53, and the middle rod 53 is detachably connected with a distance adjusting electric cylinder 22 whose power rod is detachably connected to the distance adjusting ring 21, so that when the distance between two adjacent circles of radial holes of different sleeves changes, the distance adjusting ring 21 can move accordingly to adjust the distance between the initial distance laser sensor 5 and the electric drill body 2.

[0040] Reference Figure 2 and Figure 3Each outer clamp 44 is provided with an end abutment 35, which includes a fixed rod 36 fixedly connected to the outer clamp 44, the straight line of the length direction of the fixed rod 36 intersects with the axis of the middle rod 53, and the minimum distance between the axis of the fixed rod 36 and the axis of the middle rod 53 is greater than the minimum distance between the axis of the outer clamp 44 and the axis of the middle rod 53, so as to ensure that the fixed rod 36 does not contact the sleeve. The fixed rod 36 is slidably connected with a movable rod 37 along its length direction, and one end of the movable rod 37 away from the axis of the middle rod 53 is slidably connected to the fixed rod 36, and the movable rod 37 is abutted against the end face of the sleeve, so that a sufficient distance is maintained between the sleeve and the rotating member 23, so that when the radial hole forming work of the last few turns of a sleeve is performed, the end of the middle rod 53 extending out of the sleeve is not easy to abut against the rotating member 23. The fixed rod 36 is rotatably connected to an adjusting screw 38 which is threadedly connected to the moving rod 37. The fixed rod 36 is rotatably connected to a rotating block 39 which is coaxially fixedly connected to the adjusting screw 38 at one end away from the axis of the middle rod 53. The rotating block 39 can be rotated with an Allen wrench so that the moving rod 37 can adapt to abutting against the end face of a sleeve with different inner diameters and wall thicknesses.

[0041] The implementation principle of a sleeve drilling device in an embodiment of the present application is as follows: the sleeve is set corresponding to all the inner expansion blocks 49, and then the outer clamping motor 48 and the inner expansion motor 34 are operated so that the outer wall of the sleeve is fixed by all the outer clamping claws 44, and the inner wall of the sleeve is fixed by all the inner expansion blocks 49, and then the vertical cylinder 57 and the axial cylinder 52 are operated so that the middle rod 53 enters the sleeve corresponding to the specifications of the sleeve to be processed, and then the end face laser sensor 42 and all the initial distance laser sensors 5 are detected to ensure that the axis of the middle rod 53 and the axis of the sleeve are consistent after the movement is completed, and the L of the first circle of radial holes to be formed is detected. 初 Perform detection and acquisition so that the external controller can obtain the L corresponding to the first circle of radial holes 轴 .

[0042] Then the axial cylinder 52 is operated to move the middle rod 53 toward the rotating member 23 by the distance between two adjacent circles of radial holes to be formed, and then the radial displacement cylinder 58 is operated to make the electric drill body 2 start drilling until the total distance laser sensor 4 detects that the distance moved by the axial push rod 59 is L. 轴 When the radial displacement cylinder 58 is reset, the rotary motor 24 is operated to rotate the rotary member 23 by a preset angle to form the radial holes of the first circle. In addition, during the forming process of the first circle of radial holes, the initial distance laser sensor 5 can detect the L of the second circle of radial holes. 初 Detection acquisition.

[0043] This process is then repeated until the last circle of radial holes is drilled.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sleeve drilling device, characterized in that: The invention comprises a sleeve (51), a sleeve portion (1) disposed on the sleeve (51) and clamping and fixing the sleeve, an electric drill body (2) for forming radial holes on the inner wall of the sleeve, an electric drill body moving portion (3) for driving the electric drill body (2) into the sleeve to perform a drilling operation, and a distance L between an initial position of the electric drill body (2) after entering the sleeve and a position of the electric drill body (2) when the electric drill body (2) completes drilling. 总 The total distance laser sensor (4) for controlling the distance L between the initial position of the electric drill body (2) and the position of the shaft sleeve to be drilled 初 The initial distance laser sensor (5) for detection; the drilling depth of the radial hole is defined as Z, then L 总 =Z+L 初 .

2. A sleeve drilling device according to claim 1, characterized in that: The electric drill body moving part (3) comprises a side platform (55), a cylinder seat (56) slidably connected to the side platform (55) and capable of changing height, a vertical cylinder (57) arranged on the side platform (55) to move the cylinder seat (56), an axial cylinder (52) arranged on the cylinder seat (56) and having a power rod that moves along the axis of the sleeve, a middle rod (53) detachably connected to the power rod of the axial cylinder (52), a radial displacement block (54) slidably connected to the middle rod (53) along the radial direction of the sleeve and detachably connected to the electric drill body (2), and a radial displacement cylinder (58) arranged on the middle rod (53) to move the radial displacement block (54), and an initial distance laser sensor (5) is located at one end of the middle rod (53) that enters the sleeve.

3. A sleeve drilling device according to claim 2, characterized in that: The radial displacement cylinder (58) power rod is detachably connected to an axial push rod (59) capable of abutting against the radial displacement block (54); the axial push rod (59) is slidably connected to the middle rod (53) along the moving direction of the axial cylinder (52) power rod; the surfaces where the axial push rod (59) and the radial displacement block (54) abut against each other are both inclined surfaces so that the axial push rod (59) can push the radial displacement block (54) to move; a return spring (41) for forcing the radial displacement block (54) to move toward the axis of the middle rod (53) is detachably connected between the radial displacement block (54) and the middle rod (53); the detection end of the total distance laser sensor (4) is aligned with the end of the axial push rod (59) exposed outside the middle rod (53).

4. A sleeve drilling device according to claim 3, characterized in that: A plurality of radial displacement blocks (54) are evenly arranged around the center line of the middle rod (53), the number of radial displacement blocks (54) is an even number, and each radial displacement block (54) is provided for mounting on an electric drill body (2).

5. A sleeve drilling device according to claim 4, characterized in that: The middle rod (53) is detachably connected to an end surface laser sensor (42) at the center of the end surface of one end of the sleeve, and a positioning hole (43) is provided in the jacket portion (1) at a position corresponding to the axis of the sleeve. A plurality of initial distance laser sensors (5) are evenly arranged around the center line of the middle rod (53).

6. A sleeve drilling device according to claim 2, characterized in that: One initial distance laser sensor (5) is provided corresponding to each electric drill body (2); all initial distance laser sensors (5) are detachably connected to the same distance adjusting ring (21); each distance adjusting ring (21) is slidably connected to the middle rod (53) along the center line of the middle rod (53); a distance adjusting electric cylinder (22) for moving the distance adjusting ring (21) is provided in the middle rod (53); the distance between the electric drill body (2) and the initial distance laser sensor (5) is equal to the distance between two adjacent rows of radial holes in the axial direction of the shaft sleeve.

7. The sleeve drilling device according to claim 1, characterized in that: The clamping part (1) comprises a rotating member (23) rotatably connected to the sleeve platform (51), a rotating member motor (24) disposed on the sleeve platform (51) and causing the rotating member to rotate, a plurality of outer clamping jaws (44) slidably connected to the rotating member (23) and capable of abutting against the outer surface of the shaft sleeve, an outer plane threaded disk (45) rotatably connected to the rotating member (23) and threadedly connected to all the outer clamping jaws (44), an outer ring gear (46) coaxially fixedly connected to the circumferential surface of the outer plane threaded disk (45), an outer gear (47) rotatably connected to the rotating member (23) and meshing with the outer ring gear (46), and an outer clamping motor (48) driving the outer gear (47) to rotate.

8. A sleeve drilling device according to claim 7, characterized in that: The rotating member (23) is slidably connected to a plurality of inner expansion blocks (49) capable of abutting against the inner surface of the shaft sleeve; an inner plane threaded disk (31) is rotatably connected inside the rotating member (23) and meshes with all the inner expansion blocks (49); an inner ring gear (32) is coaxially fixedly connected to the circumferential surface of the inner plane threaded disk (31); the inner ring gear (32) meshes with an inner side gear (33) rotatably connected to the rotating member (23); and the rotating member (23) is provided with an inner expansion motor (34) for driving the inner side gear (33) to rotate.

9. The sleeve drilling device according to claim 7, characterized in that: The outer clamping jaw (44) is fixedly connected to an end abutment piece (35) capable of abutting against an end surface of the shaft sleeve.

10. A sleeve drilling device according to claim 9, characterized in that: The end abutment member (35) comprises a fixed rod (36) fixedly connected to the outer clamping jaw (44), a movable rod (37) slidably connected to the fixed rod (36) along the radial direction of the sleeve and capable of abutting against the end surface of the sleeve, an adjusting screw (38) rotatably connected to the fixed rod (36) and threadedly connected to the movable rod (37), and a rotating block (39) rotatably connected to the fixed rod (36) and coaxially fixedly connected to the adjusting screw (38).

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