Auxiliary laser centering device for elastic guide sleeve of drilling machine

Abstract

The utility model provides an auxiliary laser centering device for an elastic guide sleeve of a drilling machine. Comprising a laser transmitter, a guide sleeve, a sealing cover, a bolt, an elastic plunger, a pull rope and a blade, the guide sleeve comprises a laser mounting part and a drill bit clamping part; a laser mounting part is arranged at one end of the guide sleeve and is used for assembling a laser transmitter; a drill bit clamping part is arranged at the other end of the guide sleeve and used for centering, locking and fixing a drill bit, and the center of the laser mounting part and the center of the drill bit clamping part are collinear; the elastic columns are circumferentially arrayed in an inner cavity of the drill bit clamping part, clamping force is applied to the drill bit in the radial direction, and the clamping center of the elastic plunger coincides with the center of the drill bit clamping part; the blade is arranged at the bottom of the elastic plunger; the pull rope is connected with the tail part of the blade; the sealing cover is concentric with the guide sleeve and is arranged at the end part of the drill bit clamping part; and the screw rod is used for detachably assembling the sealing cover on the guide sleeve. The drill bit is clamped by the elastic plunger and the blade, the guide sleeve, the laser transmitter and the drill bit are concentric, and the center point and the center line of the drilling machine are marked through the marking pen for laser indication.

Description

Technical Field

[0001] This utility model relates to drilling machine tooling in the field of machinery, and more particularly to a laser centering device assisted by an elastic guide sleeve for drilling machines. Background Technology

[0002] Shipbuilding involves complex construction processes, diverse piping systems, and challenging operating environments. Construction often involves the fabrication and drilling of numerous pipes of various diameters and materials, blind flanges, and tooling. Before drilling begins, the workpieces must be clamped and the drilling location aligned with the center point of the drilling machine.

[0003] However, in the process of implementing the inventive technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0004] It is difficult to mark the center point and center line of a drilling machine. It is not easy to mark the center point of the drilling machine with a marker. If the center drill of the drilling machine is used for pre-drilling, a permanent indentation needs to be formed on the workpiece. Once the position of the pre-drilled point of the center drill needs to be adjusted, the indentation caused by the original workpiece will become a defect. If the old and new indentations are repeatedly drilled, they cannot be erased, causing confusion and easily producing indentation defects that lead to quality problems. At the same time, the center drill of the drilling machine can only drill the center point and cannot mark the center line. Summary of the Invention

[0005] To address the shortcomings of existing technologies and the difficulty in marking the center point and center line of a drilling machine, this application provides a laser-assisted centering device for a drilling machine's elastic guide sleeve. This device connects a laser emitter concentrically to the guide sleeve, with the drill bit and laser emitter aligned at the same center. Marking the center point / line using a marker pen with laser dots / lines is equivalent to marking the center point / line of the drilling machine, improving work efficiency and avoiding damage to the workpiece caused by secondary marking with a traditional center drill. This solves the technical problem of the difficulty in marking the center point and center line of a drilling machine.

[0006] The solution adopted by the embodiments of this application to solve the technical problem is:

[0007] The drill press elastic guide sleeve assisted laser centering device includes a laser emitter, guide sleeve, cover, bolts, elastic plunger, pull rope and blades;

[0008] The laser emitter emits a crosshair laser source to confirm the center point / line of the drill bit; the guide sleeve includes a laser mounting part and a drill bit holding part; the laser mounting part is provided at one end of the guide sleeve for mounting the laser emitter; the drill bit holding part is provided at the other end of the guide sleeve for centering and locking the drill bit, and the center of the laser mounting part is collinear with the center of the drill bit holding part; a circumferential array of elastic plungers is located in the inner cavity of the drill bit holding part, applying a clamping force radially to the drill bit, and the clamping center of the elastic plungers coincides with the center of the drill bit holding part; blades are located at the bottom of the elastic plungers for contacting the drill bit and centering and locking it; a pull rope is connected to the tail of the blades; a cap is concentric with the guide sleeve and located at the end of the drill bit holding part for housing the blades in the inner cavity of the drill bit holding part; bolts are used to detachably assemble the cap onto the guide sleeve;

[0009] The drill bit passes through the cap and is inserted into the inner cavity of the drill bit clamping part. The drill bit is centered and clamped by the elastic plunger and the linked blades.

[0010] To further address the technical problems to be solved by the embodiments of this application, the drill bit clamping part provided in the embodiments of this application includes...

[0011] The drill bit clamping part includes a blind hole, a resilient plunger hole, a rope hole, a groove, and an internal thread;

[0012] A blind hole is located in the middle of the drill bit clamping part for storing the drill bit in the inner cavity of the drill bit clamping part; elastic plunger holes surround the blind hole and are arranged in a circular array on the drill bit clamping part for assembling elastic plungers; rope holes are located in the drill bit clamping part and are axially collinear with the elastic plunger holes for assembling pull ropes to maintain the balance and stability of the blades; grooves are located at the end of the drill bit clamping part and are arranged in a circular array for assembling blades and limiting and fixing them; internal threads are located at the end of the drill bit clamping part and are arranged in a circular array that intersects with the grooves for assembling bolts to screw the cap onto the guide sleeve;

[0013] In this design, the center of the elastic plunger hole in the circumferential array is collinear with the center of the guide sleeve. The elastic plunger is then assembled, and the center of the elastic plunger coincides with the center of the guide sleeve.

[0014] Positive effects: The technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0015] 1. Because the embodiments of this application adopt a concentric integrated structure of the laser mounting part and the drill bit clamping part, and the centers of the two are collinear, the elastic plunger centers and clamps the drill bit and is concentric with the drill bit clamping part. That is, the guide sleeve, the laser emitter and the drill bit are concentric. The drill bit, which is inserted into the inner cavity of the drill bit clamping part through the cover, is collinear with the center of the laser emitter assembled on the center of the laser mounting part. The laser point / line emitted by the laser emitter is the center point / line of the drill bit. This effectively solves the technical problem that the center point and center line of the drill press are not easy to mark in the prior art. Marking the center point / line with a marker pen by the laser point / line is equivalent to marking the center point / line of the drill press. This achieves the technical effect of improving work efficiency and avoiding the damage to the workpiece caused by the secondary marking of the traditional center drill.

[0016] 2. Because the embodiments of this application adopt the technical means of elastic plunger surrounding the blind hole circumferential array, the technical problem that the center point and center line of the drilling machine are not easy to mark in the prior art is effectively solved, thereby realizing the technical effect that the center of the elastic plunger coincides with the center of the guide sleeve.

[0017] 3. Since the embodiments of this application adopt the technical means of drilling blind holes with a cone angle of 118°, a centering cone pit is formed at the bottom of the blind hole. When the drill bit is inserted, the center of the drill bit coincides with the center of the guide sleeve, which effectively solves the technical problem that the center point and center line of the drill press are not easy to mark in the prior art, and thus achieves the technical effect of the drill bit and the guide sleeve being collinear.

[0018] 4. As the embodiments of this application adopt the technical means of having an arc part on the blade and inserting it into the groove of the drill bit clamping part, the blade and the guide sleeve are concentrically connected, which effectively solves the technical problem that the center point and center line of the drill press are not easy to mark in the prior art, and thus achieves the technical effect of the blade and the guide sleeve being concentric.

[0019] 5. Because the embodiments of this application adopt the technical means of assembling an elastic plunger in the elastic plunger hole and the elastic plunger and the blade in linkage contact with the drill bit, the radial elastic clamping force is formed by the linkage between the elastic plunger and the blade, which effectively solves the technical problem that the center point and center line of the drill press are not easy to mark in the prior art, and allows for quick insertion and removal and efficient centering, thereby achieving the technical effect that the laser point / line emitted by the laser emitter is the center point / line of the drill bit.

[0020] It is suitable for use as an auxiliary laser centering device for the elastic guide sleeve of a drilling machine. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is the southeast isometric view of this embodiment;

[0023] Figure 2 This is a southeast isometric half-sectional view of this embodiment;

[0024] Figure 3 This is the southwest isometric view of this embodiment;

[0025] Figure 4 This is a half-section view of the southwest isometric view of this embodiment;

[0026] Figure 5 This is an exploded view of this embodiment;

[0027] Figure 6 This is the front view of this embodiment;

[0028] Figure 7 This is a side view of this embodiment;

[0029] Figure 8 To cover the southeast isometric view;

[0030] Figure 9 This is an isometric half-section view of the southeast side of the shell.

[0031] Figure 10 This is a southwest isometric half-section view of the shell.

[0032] Figure 11 This is an isometric view of the southeast side of the elastic plunger.

[0033] Figure 12 This is the southwest isometric view of the elastic plunger;

[0034] Figure 13 This is the southeast isometric view of the blade;

[0035] Figure 14 This is the southwest isometric view of the blade.

[0036] In the picture:

[0037] 0. Drill bit;

[0038] 1. Laser emitter;

[0039] 2. Guide sleeve,

[0040] 21. Laser mounting section,

[0041] 211. Laser assembly holes,

[0042] 22. Drill bit clamping part,

[0043] 221. Blind hole,

[0044] 222. Elastic plunger orifice,

[0045] 223. Rope hole,

[0046] 224. Groove,

[0047] 225. Internal thread;

[0048] 3. Seal the cap.

[0049] 31. Drill bit through hole,

[0050] 32. Through-hole for bolts;

[0051] 4. Bolts;

[0052] 5. Elastic plunger,

[0053] 51. Cylinder

[0054] 52. Column sleeve,

[0055] 53. Compression spring,

[0056] 54. Ball head;

[0057] 6. Pull the rope;

[0058] 7. Leaves,

[0059] 71. Straight section,

[0060] 72. Arc-shaped part,

[0061] 73. Round hole. Detailed Implementation

[0062] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0063] According to the instruction manual Figure 1-7 As shown, the laser alignment device assisted by the elastic guide sleeve of the drilling machine includes a laser emitter 1, a guide sleeve 2, a cover 3, a bolt 4, an elastic plunger 5, a pull rope 6, and a blade 7.

[0064] Laser emitter 1 is used to emit a crosshair laser source to confirm the center point / line of the drill press;

[0065] In this embodiment, the laser emitter 1 is a cylindrical crosshair laser source;

[0066] Guide sleeve 2 includes a laser mounting part 21 and a drill bit clamping part 22;

[0067] A laser mounting part 21 is provided at one end of the guide sleeve 2 for mounting the laser emitter 1; a drill bit clamping part 22 is provided at the other end of the guide sleeve 2 for centering and locking the drill bit 0, and the center of the laser mounting part 21 and the center of the drill bit clamping part 22 are collinear.

[0068] The elastic plunger 5 is arranged in a circumferential array in the inner cavity of the drill bit clamping part 22, and applies clamping force to the drill bit 0 in the radial direction. The clamping center of the elastic plunger 5 coincides with the center of the drill bit clamping part 22, which is used for multi-point clamping of the drill bit 0 and has better centering.

[0069] The blade 7 is located at the bottom of the elastic plunger 5 and is used to contact the drill bit 0 and center and lock it.

[0070] The pull rope 6 is connected to the tail of the blade 7 and is used to balance the blade 7 to prevent it from tilting when the elastic plunger 5 squeezes the drill bit 0.

[0071] The cap 3 is concentric with the guide sleeve 2 and is located at the end of the drill bit clamping part 22 to accommodate the blade 7 in the inner cavity of the drill bit clamping part 22.

[0072] Bolt 4 is used to detachably assemble the cover 3 onto the guide sleeve 2;

[0073] In this process, the drill bit 0 passes through the cover 3 and is inserted into the inner cavity of the drill bit clamping part 22. The drill bit 0 is centered and clamped by the elastic plunger 5 and the blade 7. The guide sleeve 2, the laser emitter 1 and the drill bit 0 are concentric. The center point and center line of the drill bit 0 are indicated by the laser. The center point and center line of the drilling machine can be marked directly according to the laser indication with a marker pen. This eliminates the need for the drilling machine to use a center drill to pre-drill holes to mark the center point of the drilling machine, thus improving the accuracy and efficiency of drilling.

[0074] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0075] Since the laser mounting part 21 and the drill bit holding part 22 are a concentric integrated structure with their centers collinear, the elastic plunger 5 centers and clamps the drill bit 0 and is concentric with the drill bit holding part 22. That is, the guide sleeve 2, the laser emitter 1 and the drill bit 0 are concentric. Therefore, the drill bit 0, which is inserted into the inner cavity of the drill bit holding part 22 through the cover 3, is collinear with the center of the laser emitter 1 assembled on the center of the laser mounting part 21. The laser point / line emitted by the laser emitter 1 is the center point / line of the drill bit 0. Furthermore, the center point / line is marked with a marker pen through the laser point / line, which is equivalent to the center point / line of the drilling machine. This improves work efficiency and avoids the damage to the workpiece caused by the secondary marking of the traditional center drill.

[0076] To ensure the stability of the structure in this embodiment, please refer to the appendix to the specification. Figure 9-10 The laser mounting part 21 is a sleeve structure with a laser mounting hole 211 in the center. The laser emitter 1 is a cylindrical crosshair laser source. The laser emitter 1 is embedded in the laser mounting hole 211, and the center of the laser emitter 1 is collinear with the center of the drill bit clamping part 22.

[0077] To further ensure the stability of the structure in this embodiment, the drill bit clamping part 22 is a sleeve structure, including a blind hole 221, an elastic plunger hole 222, a rope hole 223, a groove 224 and an internal thread 225;

[0078] A blind hole 221 is provided in the middle of the drill bit holding part 22 for the drill bit 0 to be stored in the inner cavity of the drill bit holding part 22; in this embodiment, the diameter of the blind hole 221 is slightly larger than the diameter of the drill bit 0, so as to reserve space for the drill bit 0 to be elastically held.

[0079] The elastic plunger hole 222 surrounds the blind hole 221 and is arranged in a circumferential array on the drill bit clamping part 22 for assembling the elastic plunger 5, clamping the drill bit 0 at multiple points, and enhancing the reliability of the drill bit 0's alignment.

[0080] In this embodiment, the elastic plunger holes 222 are arranged in seven rows, with six holes evenly distributed in each row;

[0081] The rope hole 223 is located in the drill bit clamping part 22 and is axially collinear with the elastic plunger hole 222, and is used to assemble the pull rope 6 to maintain the balance and stability of the blade 7.

[0082] In this embodiment, there are six rope holes 223, which are evenly distributed.

[0083] The grooves 224 are provided at the end of the drill bit clamping part 22 and are arranged in a circumferential array for assembling the blades 7 and limiting and fixing them.

[0084] In this embodiment, there are six grooves 224, which are evenly distributed.

[0085] Internal threads 225 are provided at the end of drill bit clamping part 22 and are arranged in a staggered circumferential array with grooves 224 for mounting bolts 4 to screw the cover 3 onto guide sleeve 2;

[0086] In this embodiment, there are six internal threads 225, which are evenly distributed and interspersed with the grooves 224;

[0087] Among them, the center of the elastic plunger hole 222 of the circumferential array is collinear with the center of the guide sleeve 2, and the elastic plunger 5 is assembled so that the center of the elastic plunger 5 coincides with the center of the guide sleeve 2.

[0088] As a conventional technique, the bottom of the blind hole 221 is provided with a drilling cone angle of 118°, forming a centering cone pit at the bottom of the blind hole 221, so that the drill bit is centered and fixed.

[0089] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0090] Since the elastic plunger holes 222 are arranged in a circumferential array around the blind holes 221, the center of the elastic plunger holes 222 coincides with the center of the guide sleeve 2.

[0091] Since the cone angle of the blind hole 221 is 118°, a centering cone pit is formed at the bottom of the blind hole 221. When the drill bit 0 is inserted, the center of the drill bit 0 coincides with the center of the guide sleeve 2, so that the drill bit 0 and the guide sleeve 2 are collinear.

[0092] To optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 8 The cover 3 includes a drill bit through hole 31 and a bolt through hole 32;

[0093] The cover 3 has a disc-shaped structure. A drill bit through hole 31 is provided in the middle of the cover 3 for the drill bit 0 to pass through the cover 3 and enter the guide sleeve 2. Bolt through holes 32 are arranged in a circular array on the cover 3 for locking the cover 3 and the guide sleeve 2 with bolts 4.

[0094] In this embodiment, the diameter of the drill bit through hole 31 is slightly larger than the diameter of the drill bit 0, leaving room for the drill bit 0 to penetrate; there are six bolt through holes 32, evenly distributed.

[0095] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0096] Because the cover 3 has bolt through holes 32 in the circumferential array, the cover 3 and the guide sleeve 2 are concentrically connected, ensuring that the cover 3 and the guide sleeve 2 are concentric.

[0097] To further optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 11-12 The elastic plunger 5 is a press-fit elastic ball head plunger, which is assembled in the elastic plunger hole 222 and includes a cylinder 51, a sleeve 52, a compression spring 53 and a ball head 54.

[0098] A sleeve 52 is fitted on the upper part of the cylinder 51. A compression spring 53 is held inside the sleeve 52. A ball head 54 is provided at the top of the compression spring 53 for point contact with the blade 7 to apply a force in the radial direction of the drill bit 0 and to center and lock the drill bit 0.

[0099] In this embodiment, the elastic plungers 5 are arranged in seven rows, with six evenly distributed in each row, so as to evenly bear the radial force when the drill bit 0 is inserted, which makes it easier for the elastic plungers 5 to clamp and center the drill bit 0 at multiple points.

[0100] To further optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 13-14 The blade 7 includes a straight portion 71, an arc portion 72, and a circular hole 73;

[0101] The blade 7 is a metal sheet with a right-angle structure, which has both hardness and rigidity, and has a certain degree of elasticity.

[0102] An arc-shaped portion 72 is provided at one end of the blade 7, which corresponds to the groove 224 at the end of the drill bit clamping portion 22 in the guide sleeve 2, and the first end of the arc-shaped portion 72 is fitted into the groove 224, so that the center of the blade 7 coincides with the center of the guide sleeve 2; the arc-shaped portion 72 is used to smoothly transition into the inner cavity of the guide sleeve 2 when the drill bit 0 is inserted.

[0103] A straight section 71 is provided at the other end of the blade 7 for radially contacting and squeezing the drill bit 0, thereby clamping and centering the drill bit 0; a round hole 73 is provided at the tail end of the straight section 71 for connecting the pull rope 6.

[0104] To further optimize the structure of this embodiment, one end of the pull rope 6 is connected to the round hole 73 in the blade 7, and the other end is connected to the rope hole 223 in the guide sleeve 2, so as to control the balance and stability of the blade 7 and better transmit the clamping force of the elastic plunger 5.

[0105] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0106] Since one end of the blade 7 is fitted into the groove 224 through the first end of the arc portion 72, and the other end is connected to the rope hole 223 in the guide sleeve 2 through the pull rope 6, the pull rope 6 controls the balance and stability of the blade 7, better transmits the clamping force of the elastic plunger 5, and facilitates the centering and clamping of the drill bit 0.

[0107] Because the blade 7 has an arc-shaped portion 72, the drill bit smoothly transitions into the guide sleeve 2 along this portion during insertion.

[0108] The drill bit 0 is clamped by the linkage between the elastic plunger 5 and the blade 7, enabling rapid insertion and removal and efficient centering.

[0109] The working principle of this embodiment:

[0110] When the guide sleeve 2 is fixed, the drill bit 0 is inserted into one end of the guide sleeve 2. The elastic plunger 5 and the blade 7 generate an elastic clamping force on the drill bit 0 until the drill bit 0 is centered and clamped. At this time, the center of the drill bit 0 coincides with the center of the guide sleeve 2. At the same time, the laser emitter 1 installed at the other end of the guide sleeve 2 is concentric with the guide sleeve 2. Thus, the laser point / line emitted by the laser emitter 1 is the same as the center point / line of the drill bit 0, so that it can be quickly inserted and removed to achieve laser centering.

[0111] It is worth noting that all contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of the laser emitter 1 are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures, and will not be described here.

[0112] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drill rig elastic guide sleeve auxiliary laser centering device, characterized in that: it comprises a laser emitter (1), a guide sleeve (2), a cover (3), a bolt (4), an elastic plunger (5), a pull rope (6) and a blade (7); the laser emitter (1) is used for emitting a cross-line laser light source to confirm the center point / line of the drill rig; the guide sleeve (2) comprises a laser mounting part (21) and a drill bit clamping part (22); the laser mounting part (21) is arranged at one end of the guide sleeve (2) and used for assembling the laser emitter (1); the drill bit clamping part (22) is arranged at the other end of the guide sleeve (2) and used for centering and locking the drill bit (0); the center of the laser mounting part (21) is collinear with the center of the drill bit clamping part (22); the elastic plunger (5) is circumferentially arranged in the inner cavity of the drill bit clamping part (22) and applies a clamping force in the radial direction of the drill bit (0); the clamping center of the elastic plunger (5) coincides with the center of the drill bit clamping part (22); the blade (7) is arranged at the bottom of the elastic plunger (5) and used for contacting and centering the drill bit (0); the pull rope (6) is connected with the tail of the blade (7); the cover (3) is concentric with the guide sleeve (2) and arranged at the end of the drill bit clamping part (22) to accommodate the blade (7) in the inner cavity of the drill bit clamping part (22); the bolt (4) is used for detachably assembling the cover (3) on the guide sleeve (2); wherein the drill bit (0) is inserted into the inner cavity of the drill bit clamping part (22) through the cover (3) and centered and clamped by the elastic plunger (5) and the blade (7); the guide sleeve (2), the laser emitter (1) and the drill bit (0) are concentric.

2. The drill rig elastic guide sleeve auxiliary laser centering device according to claim 1, characterized in that: the laser mounting part (21) is provided with a laser assembly hole (211) at the center; the laser emitter (1) is a cylindrical cross-line laser light source; the laser emitter (1) is embedded in the laser assembly hole (211); and the center of the laser emitter (1) is collinear with the center of the drill bit clamping part (22).

3. The drill rig elastic guide sleeve auxiliary laser centering device according to claim 1, characterized in that: the drill bit clamping part (22) comprises a blind hole (221), an elastic plunger hole (222), a rope hole (223), a groove (224) and an internal thread (225); the blind hole (221) is arranged in the middle of the drill bit clamping part (22) and used for accommodating the drill bit (0) in the inner cavity of the drill bit clamping part (22); the elastic plunger hole (222) surrounds the blind hole (221) and is circumferentially arranged on the drill bit clamping part (22) and used for assembling the elastic plunger (5); the rope hole (223) is arranged on the drill bit clamping part (22) and axially collinear with the elastic plunger hole (222) and used for assembling the pull rope (6) to keep the blade (7) balanced and stable; and the groove (224) is arranged at the end of the drill bit clamping part (22) and circumferentially arranged and used for assembling and limiting the blade (7). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The internal thread (225) is arranged at the end of the drill chuck (22) and is staggered with the circumferential array of the grooves (224) for assembling the bolt (4) to screw the cover (3) on the guide sleeve (2); The center of the circumferential array of the elastic plunger holes (222) is collinear with the center of the guide sleeve (2), the elastic plunger (5) is assembled, and the center of the elastic plunger (5) is coincident with the center of the guide sleeve (2).

4. The drill press elastic guide sleeve auxiliary laser centering device according to claim 3, characterized in that: The bottom of the blind hole (221) is provided with a drill hole taper angle of 118° to form a centering cone pit at the bottom of the blind hole (221).

5. The drill press elastic guide sleeve auxiliary laser centering device according to claim 4, characterized in that: The cover (3) comprises a drill hole (31) and a bolt hole (32). The drill hole (31) is arranged in the middle of the cover (3) for the drill (0) to pass through the cover (3) and enter the guide sleeve (2); and the bolt hole (32) is arranged in the circumferential array on the cover (3) for locking the cover (3) and the guide sleeve (2) by the bolt (4).

6. The drill press elastic guide sleeve auxiliary laser centering device according to claim 5, characterized in that: The elastic plunger (5) is a press-in type elastic ball head plunger assembled in the elastic plunger hole (222) and comprises a cylinder (51), a plunger sleeve (52), a compression spring (53), and a ball head (54). The plunger sleeve (52) is assembled at the upper part of the cylinder (51), the plunger sleeve (52) is provided with the compression spring (53) inside, the top end of the compression spring (53) is provided with the ball head (54) for point contact with the vane (7) to exert a force in the radial direction of the drill (0) and lock the drill (0) in place.

7. The drill press elastic guide sleeve auxiliary laser centering device according to claim 6, characterized in that: The vane (7) comprises a flat part (71), a circular arc part (72), and a circular hole (73). The vane (7) is a metal sheet with a right angle structure; the circular arc part (72) is arranged at one end of the vane (7) and corresponds to the groove (224) at the end of the drill chuck (22) in the guide sleeve (2), and the leading end of the circular arc part (72) is assembled in the groove (224) to make the center of the vane (7) coincident with the center of the guide sleeve (2); the circular arc part (72) is used for the drill (0) to follow the smooth transition into the inner cavity of the guide sleeve (2) when inserted; The flat part (71) is arranged at the other end of the vane (7) for radial contact and extrusion of the drill (0); and the circular hole (73) is arranged at the tail end of the flat part (71) for connecting the pull rope (6).

8. The drill press elastic guide sleeve auxiliary laser centering device according to claim 7, characterized in that: One end of the pull rope (6) is connected with the circular hole (73) in the vane (7), and the other end is connected with the rope hole (223) in the guide sleeve (2).

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