Elastic clamping auxiliary laser centering device for drilling machine

Abstract

The utility model provides an elastic clamping auxiliary laser centering device for a drilling machine. Comprising a laser transmitter, a clamping seat, a sealing cover, a screw rod and an elastic claw, the laser transmitter is used for transmitting a cross laser light source to confirm the central point / line of the drilling machine; the clamping seat comprises a laser mounting part and a drill bit clamping part; a laser mounting part is arranged at one end of the clamping seat and is used for assembling a laser transmitter; a drill bit clamping part is arranged at the other end of the clamping seat 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 claws are circumferentially arrayed in an inner cavity of the drill bit clamping part, the centers of the elastic claws coincide with the center of the drill bit clamping part, and the elastic claws are used for centering and fixing a probing drill bit; the sealing cover is concentric with the clamping seat, is arranged at the end part of the drill bit clamping part and is used for accommodating the elastic claw in an inner cavity of the drill bit clamping part; and the screw rod is used for detachably assembling the sealing cover on the clamping seat. The clamping base, the laser transmitter and the drill bit are concentric, and the center point and the center line of the drill bit are indicated through laser.

Description

Technical Field

[0001] This utility model relates to drilling machine tooling in the field of machinery, and more particularly to a drilling machine elastic clamping auxiliary laser centering device. 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 centering device for elastic clamping of a drilling machine. This device connects a laser emitter concentrically to the clamping seat, with the drill bit and laser emitter aligned on the same line. 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 clamping assisted laser centering device includes a laser emitter, a clamping seat, a cover, a screw, and elastic jaws;

[0008] The laser emitter emits a crosshair laser source to confirm the center point / line of the drill bit; the clamping seat includes a laser mounting part and a drill bit holding part; the laser mounting part is provided at one end of the clamping seat for mounting the laser emitter; the drill bit holding part is provided at the other end of the clamping seat 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 claws is arranged in the inner cavity of the drill bit holding part, and the center of the elastic claws coincides with the center of the drill bit holding part for centering and fixing the probing drill bit; the cap is concentric with the clamping seat and is provided at the end of the drill bit holding part for housing the elastic claws in the inner cavity of the drill bit holding part; the screw is used to detachably assemble the cap onto the clamping seat;

[0009] The drill bit passes through the cover and is inserted into the inner cavity of the drill bit clamping part. The drill bit is centered and clamped by the elastic claw. The clamping seat, laser emitter and drill bit are concentric. The center point and center line of the drill bit are indicated by the laser. The center point and center line of the drill press are marked with a marker according to the laser indication.

[0010] In order to further solve the technical problems to be solved by the embodiments of this application, the laser mounting part provided in the embodiments of this application has a receiving hole at the center of the laser mounting part, the laser emitter is a cylindrical crosshair laser light source, the laser emitter is embedded in the receiving hole, and the center of the laser emitter is collinear with the center of the drill bit clamping part.

[0011] Furthermore, the drill bit clamping part is a cylindrical structure, including blind holes, spacers, spacer cavities, grooves, and bolt holes;

[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; spacers surround the blind hole and are arranged in a circular array within the drill bit clamping part for supporting the drill bit clamping part; a spacer cavity is located between two spacers for assembling elastic claws to clamp the drill bit; a groove is located at the end of the spacer cavity and is arranged in a circular array for assembling a cap and limiting and fixing it; bolt holes are located at the bottom of the blind hole and are arranged in a circular array, penetrating the drill bit clamping part and collinear with the groove, for assembling a screw and assembling the cap onto the clamping seat;

[0013] The spacer cavity is concentric with the clamping seat and is fitted with elastic claws, with the center of the elastic claws coinciding with the center of the clamping seat.

[0014] Furthermore, the bottom of the blind hole is provided with a drilling cone angle of 118°, forming a centering cone pit at the bottom of the blind hole.

[0015] Furthermore, the cap includes an end cap, a round hole, a protrusion, and a bolt through hole;

[0016] The end cap has a disc-shaped structure with a round hole in the center for the drill bit to pass through the cap and enter the clamping seat. There are protrusions arranged in a circular array on the inner circumference of the end cap. The protrusions match the grooves of the drill bit clamping part. The protrusions are inserted into the grooves to limit the connection between the cap and the clamping seat. There are bolt holes arranged radially on the inner side of the protrusions, which are consistent with the distribution of the protrusions and are used to lock the cap and the clamping seat with screws.

[0017] Furthermore, the elastic claw includes a slider, a plunger, a spring, and a screw;

[0018] The slider is a plate-shaped block assembled in the spacer cavity of the clamping seat. The inner side of the slider presses against the drill bit to clamp and center it. The plungers are arranged at the ends of the slider and contact the bottom of the blind hole of the clamping seat to limit the axis of the elastic claw. The screws are arranged on the outer side of the slider and are evenly distributed. One end of the spring is fixed to the screw, and the other end is connected to the screw inserted in the spacer cavity, so that the slider slides along the spacer cavity and elastically clamps the drill bit.

[0019] The height of the slider is greater than the depth of the spacer cavity, and the sliders are symmetrically distributed to prevent them from blocking each other and not sliding out of the spacer cavity when the drill bit is not inserted.

[0020] Furthermore, the other end of the slider is provided with an arc section, which allows the drill bit to smoothly transition into the inner cavity of the clamping seat.

[0021] Furthermore, the plunger is a press-fit elastic ball-head plunger, comprising a cylinder, a sleeve, a compression spring, and a ball head;

[0022] A sleeve is fitted on the upper part of the cylinder, and a compression spring is held inside the sleeve. The top of the compression spring is provided with a ball head, which is used to point contact the bottom of the blind hole to axially limit the slider.

[0023] Positive effects: The technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0024] 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 claws center and clamp the drill bit and are concentric with the drill bit clamping part. That is, the clamping seat, 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. By marking the center point / line with a marker pen using the laser point / line, it is equivalent to 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.

[0025] 2. Because the embodiments of this application adopt the technical means of the circumferential array of the spacer cavity surrounding the blind hole, 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 spacer cavity coincides with the center of the clamping seat.

[0026] 3. Since the embodiment of this application adopts 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 clamping seat, 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 clamping seat being collinear.

[0027] 4. As this application embodiment adopts the technical means of having protrusions in the circumferential array of the end cap and inserting them into the groove of the drill bit clamping part, the end cap and the clamping seat 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 that the end cap and the clamping seat are concentric.

[0028] 5. As this application embodiment adopts the technical means of providing a plunger at the end of the slider, the plunger abuts against the bottom of the blind hole to form the axial action point of the elastic claw and counteract the axial force brought by the insert drill bit, while restricting the slider, effectively solving the technical problem that the center point and center line of the drill press are not easy to mark in the prior art, locking and fixing the drill bit passing through the through hole, thereby achieving the technical effect of centering and clamping the drill bit.

[0029] 6. Because the embodiments of this application adopt the technical means of connecting a spring to the outside of the slider by screws, and connecting the spring to the screw inserted in the spacer cavity, a linkage structure is formed between the clamping seat and the slider by the spring connection, forming the radial action point of the elastic claw, which effectively solves the technical problem that the center point and center line of the drill bit are not easy to mark in the prior art, and enables quick insertion and removal and efficient centering, thereby realizing the technical effect that the laser point / line emitted by the laser emitter is the center point / line of the drill bit.

[0030] It is suitable for use as an auxiliary laser centering device for elastic clamping of drilling machines. Attached Figure Description

[0031] 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.

[0032] Figure 1 This is the southeast isometric view of this embodiment;

[0033] Figure 2 This is a southeast isometric half-sectional view of this embodiment;

[0034] Figure 3 This is a half-section view of the southwest isometric view of this embodiment;

[0035] Figure 4 This is the front view of this embodiment;

[0036] Figure 5 This is a side view of this embodiment;

[0037] Figure 6 This is the southeast isometric view of the clamping seat;

[0038] Figure 7 This is the southwest isometric view of the clamping seat;

[0039] Figure 8 To cover the southeast isometric view;

[0040] Figure 9 This is the northeast isometric view of the elastic claw;

[0041] Figure 10 This is an isometric view of the southeast side of the plunger.

[0042] Figure 11 This is the southwest isometric view of the plunger.

[0043] In the picture:

[0044] 0. Drill bit;

[0045] 1. Laser emitter;

[0046] 2. Clamping seat,

[0047] 21. Laser mounting section,

[0048] 211. Reception port,

[0049] 22. Drill bit clamping part,

[0050] 221. Blind hole,

[0051] 222. Spacer block,

[0052] 223. Spacing chamber,

[0053] 224. Groove,

[0054] 225. Bolt hole;

[0055] 3. Seal the cap.

[0056] 31. End cap,

[0057] 32. Round hole,

[0058] 33. Bump,

[0059] 34. Through-hole for bolts;

[0060] 4. Screw;

[0061] 5. Flexible claws,

[0062] 51. Slider,

[0063] 511. Arc-shaped part,

[0064] 52. Plunger,

[0065] 521. Cylinder

[0066] 522. Column sleeve,

[0067] 523. Compression spring,

[0068] 524. Ball head,

[0069] 53. Spring,

[0070] 54. Screw. Detailed Implementation

[0071] 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.

[0072] According to the instruction manual Figure 1-5 As shown, the drill press elastic clamping auxiliary laser centering device includes a laser emitter 1, a clamping seat 2, a cover 3, a screw 4, and an elastic claw 5;

[0073] Laser emitter 1 is used to emit a crosshair laser source to confirm the center point / line of the drill; in this embodiment, laser emitter 1 is a cylindrical crosshair laser source.

[0074] The clamping seat 2 includes a laser mounting part 21 and a drill bit holding part 22; a laser mounting part 21 is provided at one end of the clamping seat 2 for mounting the laser emitter 1; a drill bit holding part 22 is provided at the other end of the clamping seat 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 holding part 22 are collinear.

[0075] The elastic claws 5 are arranged in a circumferential array inside the drill bit clamping part 22. The center of the elastic claws 5 coincides with the center of the drill bit clamping part 22, which is used to center and fix the drill bit 0 during the probe.

[0076] The cap 3 is concentric with the clamping seat 2 and is located at the end of the drill bit clamping part 22 to accommodate the elastic claw 5 in the inner cavity of the drill bit clamping part 22.

[0077] The screw 4 is used to detachably assemble the cover 3 onto the clamping seat 2;

[0078] 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 claw 5. The clamping seat 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 with a marker according to the laser indication. Therefore, the center point of the drilling machine does not need to be pre-drilled with a center drill to mark the center point of the drilling machine, which improves the accuracy and efficiency of drilling.

[0079] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0080] Since the laser mounting part 21 and the drill bit holding part 22 are a concentric integrated structure with their centers collinear, the elastic claw 5 centers and clamps the drill bit 0 and is concentric with the drill bit holding part 22. That is, the clamping seat 2, the laser emitter 1 and the drill bit 0 are concentric. Therefore, the drill bit 0 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. Then, 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.

[0081] To ensure the stability of the structure in this embodiment, please refer to the appendix to the specification. Figure 6-7 The laser mounting part 21 is a sleeve structure with a receiving hole 211 in the center. The laser emitter 1 is a cylindrical crosshair laser source. The laser emitter 1 is embedded in the receiving hole 211, and the center of the laser emitter 1 is collinear with the center of the drill bit clamping part 22.

[0082] To further ensure the stability of the structure in this embodiment, the drill bit clamping part 22 is a cylindrical structure 521, including a blind hole 221, a spacer block 222, a spacer cavity 223, a groove 224 and a bolt hole 225;

[0083] 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.

[0084] Spacer blocks 222 surround the blind hole 221 and are arranged in a circular array within the drill bit clamping part 22 to support the drill bit clamping part 22 and enhance its stability. In this embodiment, there are six spacer blocks 222, which are evenly distributed.

[0085] The spacer cavity 223 is disposed between the two spacer blocks 222 and is used to assemble the elastic claw 5 to hold the drill bit 0; in this embodiment, there are six spacer cavities 223, which are evenly distributed.

[0086] The grooves 224 are arranged in a circular array at the end of the spacer cavity 223 for assembling the cover 3 and limiting and fixing it; in this embodiment, there are six grooves 224, which are evenly distributed.

[0087] Bolt holes 225 are located at the bottom of blind holes 221 and are arranged in a circumferential array. They penetrate the drill bit clamping part 22 and are collinear with the groove 224. They are used to assemble the screw 4 and assemble the cover 3 onto the clamping seat 2. In this embodiment, there are six bolt holes 225, which are evenly distributed.

[0088] The spacer cavity 223 is concentric with the clamping seat 2, and the elastic claw 5 is assembled thereon, so that the center of the elastic claw 5 coincides with the center of the clamping seat 2.

[0089] 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.

[0090] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0091] Since the spacer cavity 223 is arranged in a circular array around the blind hole 221, the center of the spacer cavity 223 coincides with the center of the clamping seat 2.

[0092] 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 clamping seat 2, so that the drill bit 0 and the clamping seat 2 are collinear.

[0093] To optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 8 The cover 3 includes an end cap 31, a round hole 32, a protrusion 33, and a bolt through hole 34;

[0094] The end cap 31 has a disc-shaped structure with a circular hole 32 in the center for the drill bit 0 to pass through the cap 3 and enter the clamping seat 2. Protrusions 33 are arranged in a circular array on the inner circumference of the end cap 31. These protrusions 33 match the grooves 224 of the drill bit clamping part 22, and are inserted into the grooves 224 to limit the connection between the cap 3 and the clamping seat 2. Bolt holes 225 are arranged radially on the inner side of the protrusions 33, and are distributed in the same direction as the protrusions 33, for locking the cap 3 and the clamping seat 2 together with screws 4. In this embodiment, the diameter of the circular hole 32 is slightly larger than the diameter of the drill bit 0, allowing for the drill bit 0 to pass through. There are six protrusions 33 and six bolt holes 34, 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 end cap 31 has protrusions 33 arranged in a circumferential array and inserted into the groove 224 of the drill bit holding part 22, the end cap 31 is concentrically connected with the clamping seat 2, ensuring that the cap 3 and the clamping seat 2 are concentric.

[0097] To further optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 9 The elastic claw 5 includes a slider 51, a plunger 52, a spring 53, and a screw 54;

[0098] The slider 51 is a plate-shaped block, which is assembled in the spacer cavity 223 of the clamping seat 2. The inner side of the slider 51 presses the drill bit 0 to clamp and center the drill bit 0.

[0099] The plunger 52 is arranged at the end of the slider 51 and contacts the bottom of the blind hole 221 of the clamping seat 2 for axial positioning of the elastic claw 5;

[0100] Screws 54 are arranged on the outside of slider 51 and are evenly distributed; in this embodiment, there are six screws 54, which are evenly distributed.

[0101] One end of the spring 53 is fixed to the screw 54, and the other end is connected to the screw 4 inserted in the spacer cavity 223, so that the slider 51 slides along the spacer cavity 223, thereby elastically clamping the drill bit 0.

[0102] The height of the slider 51 is greater than the depth of the spacer cavity 223. The sliders 51 are symmetrically distributed to prevent them from blocking each other and not sliding out of the spacer cavity 223 when the drill bit 0 is not inserted.

[0103] Preferably, the other end of the slider 51 is provided with an arc portion 511, which is used for the drill bit 0 to smoothly transition into the inner cavity of the clamping seat 2.

[0104] To further optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 10-11The plunger 52 is a press-fit elastic ball head plunger, including a cylinder 521, a sleeve 522, a compression spring 523, and a ball head 524;

[0105] A sleeve 522 is mounted on the upper part of the cylinder 521. A compression spring 523 is held inside the sleeve 522. A ball head 524 is provided at the top of the compression spring 523 for point contact with the bottom of the blind hole 221 to axially restrict the slider 51. In this embodiment, two plungers 52 are arranged at the end of the slider 51 to evenly bear the axial force when the drill bit 0 is inserted, so that the slider 51 can center the drill bit 0.

[0106] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0107] Since the end of the slider 51 is provided with a plunger 52, the plunger 52 abuts against the bottom of the blind hole 221, forming the axial action point of the elastic claw 5, and counteracting the axial force brought by the insert drill bit 0, while restricting the slider 51, which facilitates centering and clamping the drill bit 0.

[0108] Since a spring 53 is connected to the outside of the slider 51 by a screw 54, and the spring 53 is connected to the screw 4 inserted in the spacer cavity 223, a linkage structure is formed between the clamping seat 2 and the slider 51 through the connection of the spring 53, forming the radial action point of the elastic claw 5. The slider 51 slides in the spacer cavity 223, clamping the drill bit 0 and realizing rapid insertion and extraction and efficient centering.

[0109] The working principle of this embodiment:

[0110] With the clamping seat 2 fixed in place, during the insertion of the drill bit 0 into one end of the clamping seat 2, the elastic claw 5 generates a sliding motion that engulfs the drill bit 0. The drill bit 0 continuously pushes the axial movement until it is centered and clamped. At this time, the center of the drill bit 0 coincides with the center of the clamping seat 2. At the same time, the laser emitter 1 mounted on the other end of the clamping seat 2 is concentric with the clamping seat 2. Thus, the laser point / line emitted by the laser emitter 1 is equivalent to the center point / line of the drill bit 0, thereby enabling rapid insertion and removal and achieving laser alignment.

[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 drilling machine elastic clamping auxiliary laser centering device, characterized by comprising: a laser emitter (1) for emitting a cross-line laser light source to confirm the center point / line of the drilling machine; a clamping seat (2) comprising a laser mounting portion (21) and a drill bit clamping portion (22); the laser mounting portion (21) is arranged at one end of the clamping seat (2) for assembling the laser emitter (1); the drill bit clamping portion (22) is arranged at the other end of the clamping seat (2) for centering and locking the drill bit (0); the center of the laser mounting portion (21) is collinear with the center of the drill bit clamping portion (22); elastic claws (5) are circumferentially arranged in the inner cavity of the drill bit clamping portion (22), the center of the elastic claws (5) is coincident with the center of the drill bit clamping portion (22), for centering and fixing the inserted drill bit (0); a cover (3) is concentric with the clamping seat (2) and arranged at the end of the drill bit clamping portion (22) for housing the elastic claws (5) in the inner cavity of the drill bit clamping portion (22); and a screw rod (4) is used for detachably assembling the cover (3) on the clamping seat (2); wherein the drill bit (0) is inserted into the inner cavity of the drill bit clamping portion (22) through the cover (3), and the drill bit (0) is centered and clamped by the elastic claws (5); the clamping seat (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 laser, and the center point and center line of the drilling machine are marked by a marker pen according to the laser indication.

2. The drilling machine elastic clamping auxiliary laser centering device according to claim 1, characterized in that: a receiving hole (211) is arranged at the center of the laser mounting portion (21), the laser emitter (1) is a cylindrical cross-line laser light source, the laser emitter (1) is embedded in the receiving hole (211), and the center of the laser emitter (1) is collinear with the center of the drill bit clamping portion (22).

3. The drilling machine elastic clamping auxiliary laser centering device according to claim 1, characterized in that: the drill bit clamping portion (22) comprises: a blind hole (221) arranged in the middle of the drill bit clamping portion (22) for receiving the drill bit (0) in the inner cavity of the drill bit clamping portion (22); spacer blocks (222) surrounding the blind hole (221) and circumferentially arranged in the drill bit clamping portion (22) for supporting the drill bit clamping portion (22); a spacer cavity (223) arranged between two spacer blocks (222) for assembling the elastic claws (5) to clamp the drill bit (0); grooves (224) arranged at the ends of the spacer cavity (223) and circumferentially arranged for assembling the cover (3) and limiting and fixing; and ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Bolt hole (225), the bolt hole (225) is arranged at the bottom of the blind hole (221) and the circumferential array, penetrates through the drill chuck (22) and the groove (224) is collinear, for assembling the screw rod (4), the cover (3) is assembled on the clamping seat (2); Wherein, the interval cavity (223) is concentric with the clamping seat (2), the elastic claw (5) is assembled, and the center of the elastic claw (5) is coincident with the center of the clamping seat (2).

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

5. The drill press elastic clamping auxiliary laser centering device according to claim 3, characterized in that: The cover (3) includes an end cover (31), a circular hole (32), a protrusion (33) and a bolt through hole (34); The end cover (31) is a disc structure, the circular hole (32) is arranged in the middle of the end cover (31), the drill bit (0) passes through the cover (3) and enters the clamping seat (2); the protrusion (33) is arranged on the inner side of the end cover (31) in circumferential array, the protrusion (33) is matched with the groove (224) of the drill chuck (22), the protrusion (33) is inserted and assembled in the groove (224), the cover (3) is connected with the clamping seat (2) in position limiting; the bolt hole (225) is arranged on the inner side of the protrusion (33) in radial direction, and is consistent with the distribution of the protrusion (33), for locking the cover (3) and the clamping seat (2) through the screw rod (4).

6. The drill press elastic clamping auxiliary laser centering device according to claim 3, characterized in that: The elastic claw (5) includes: The slider (51) is a sheet block, assembled in the interval cavity (223) of the clamping seat (2), the inner side of the slider (51) extrudes the drill bit (0), for clamping and centering the drill bit (0); The plunger (52) is arranged at the end of the slider (51) and contacts the bottom of the blind hole (221) of the clamping seat (2), for limiting the axis of the elastic claw (5); The screw (54) is arranged on the outer side of the slider (51) and is uniformly arranged; and The spring (53) is connected on the screw (54) and fixed at one end, and connected with the screw rod (4) inserted in the interval cavity (223) at the other end, so that the slider (51) slides along the interval cavity (223) and elastically clamps the drill bit (0); Wherein, the height of the slider (51) is greater than the depth of the interval cavity (223), the sliders (51) are symmetrically distributed, and the sliders (51) are prevented from blocking each other and sliding out of the interval cavity (223) when the drill bit (0) is not inserted.

7. The drill press elastic clamping auxiliary laser centering device according to claim 6, characterized in that: ​ The other end of the slider (51) is provided with a circular arc part (511) for the drill bit (0) to follow its smooth transition into the inner cavity of the clamping seat (2).

8. The elastic clamping auxiliary laser centering device of the drilling machine according to claim 6, characterized in that: The plunger (52) is a press-in type elastic ball head plunger, which comprises a cylinder (521), a plunger sleeve (522), a compression spring (523) and a ball head (524); The plunger sleeve (522) is assembled at the upper part of the cylinder (521), the compression spring (523) is engaged in the plunger sleeve (522), the top end of the compression spring (523) is provided with the ball head (524) for point contact with the bottom of the blind hole (221) to axially limit the slider (51).

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