Laser drill bit with adjustable light spot shape

Abstract

The utility model particularly relates to a laser drill bit with an adjustable light spot shape, and belongs to the technical field of drill bits. The laser drill bit with the adjustable light spot shape comprises a drill bit body and a laser component. A through hole is formed in the drill bit body in the axial direction of the drill bit body, the drill bit body comprises a first side matched with a drill rod, the through hole comprises a first hole section and a second hole section, the second hole section is close to the first side, the hole diameter of the second hole section is larger than that of the first hole section, and a transition face is arranged between the second hole section and the first hole section. The laser component comprises a laser emitting part, the laser emitting part is contained in the second hole section, the laser emitting part abuts against the transition face, and the laser emitting part is configured in the mode that the shape of a laser spot generated by the laser emitting part is adjustable. The shape of a laser spot formed by the laser emitting part is adjustable, so that the shape of the laser spot can be adjusted according to needs in the drilling process, for example, the shape of the laser spot can be adjusted to be square or round, different drilling requirements are met, and the flexibility of rock breaking of the laser drill bit is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and in particular relates to a laser drill bit with adjustable light spot shape. Background Art

[0002] Laser drilling is a highly efficient drilling technology. By setting a laser on the drill bit, the high-energy light beam generated by the laser is irradiated on the rock, which can cause the rock to thermally crack into loose fragments, and then drill with the drill bit. Compared with the traditional process that only relies on the drill bit for drilling, it can significantly increase the drilling efficiency.

[0003] However, the disadvantage of current laser drills is that the laser spot shape is fixed, which reduces the flexibility of breaking rocks through the laser drill. Utility Model Content

[0004] The utility model aims to provide a laser drill with adjustable spot shape. The laser spot generated by the laser drill is adjustable.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows: the embodiment of the present application provides a laser drill bit with adjustable spot shape, including a drill bit body and a laser component. Along the axial direction of the drill bit body, the drill bit body is provided with a through hole, the drill bit body includes a first side that cooperates with the drill rod, the through hole includes a first hole section and a second hole section, the second hole section is close to the first side, the aperture of the second hole section is larger than the aperture of the first hole section, and a transition surface is provided between the second hole section and the first hole section. The laser component includes a laser emitting part, the laser emitting part is accommodated in the second hole section, the laser emitting part is against the transition surface, and the laser emitting part is configured to generate an adjustable laser spot shape.

[0006] In some embodiments, the side of the laser emitting portion close to the transition surface is a spherical surface, and the transition surface is a spherical surface.

[0007] In some embodiments, the laser emitting portion and the second hole segment are clearance-fitted.

[0008] In some embodiments, the drill body is further provided with an abutment portion, which abuts against a side of the laser emitting portion close to the first side.

[0009] In some embodiments, the through hole further includes a third hole segment, the hole diameter of the third hole segment is larger than the hole diameter of the second hole segment, and the abutment portion is accommodated in the third hole segment and threadedly connected to the third hole segment.

[0010] In some embodiments, the abutting portion is provided with a threading hole, and the laser component further comprises an optical fiber, and the optical fiber is connected to the laser emitting portion via the threading hole.

[0011] In some embodiments, the abutting portion includes an outer ring body and an inner ring body. The outer ring body is connected to the drill body, and the outer ring body abuts against the laser emitting portion. A threading hole is formed inside the inner ring body, and the outer ring body is arranged around the circumference of the inner ring body, and a buffer portion is arranged between the outer ring body and the inner ring body.

[0012] In some embodiments, along the axial direction of the outer ring body, the outer peripheral wall of the outer ring body is provided with a notch through groove.

[0013] In some embodiments, the inner peripheral wall of the inner ring body is provided with a plurality of flexible extrusion portions.

[0014] In some embodiments, a plurality of flexible extrusion portions are arranged at intervals along the axial direction of the inner ring body, and two adjacent flexible extrusion portions are respectively arranged on two radial sides of the inner ring body.

[0015] The utility model has the following beneficial effects:

[0016] 1. The shape of the laser spot formed by the laser emitting part is adjustable, so that during the drilling process, the shape of the spot can be adjusted as needed, such as the shape of the spot can be adjusted to a square or a circle to meet different drilling requirements, increasing the flexibility of the laser drill bit in breaking rocks.

[0017] 2. The aperture of the second hole segment is larger than that of the first hole segment, so that the laser emitting part is against the transition surface and cannot enter the first hole segment. The laser emitting part can be fixed by only fixing the end of the laser emitting part close to the first side, making the fixation of the laser emitting part more convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a laser drill bit with adjustable spot shape according to the utility model;

[0019] Figure 2 It is a structural schematic diagram of the abutting portion of the utility model.

[0020] Figure numbers: 1-drill bit body, 2-laser emitting part, 3-optical fiber, 4-laser, 5-outer ring body, 6-notch groove, 7-buffer part, 8-inner ring body, 9-flexible extrusion part, 10-transition surface, 11-first hole section, 12-second hole section, 13-third hole section, 14-first side. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] The embodiment of the present application provides a laser drill with adjustable spot shape, including a drill body 1 and a laser component. The drill body 1 is provided with a through hole along the axial direction of the drill body 1, and the drill body 1 includes a first side 14 that cooperates with the drill rod, and the through hole includes a first hole section 11 and a second hole section 12, the second hole section 12 is close to the first side 14, the aperture of the second hole section 12 is larger than the aperture of the first hole section 11, and a transition surface 10 is provided between the second hole section 12 and the first hole section 11. The laser component includes a laser emitting part 2, the laser emitting part 2 is accommodated in the second hole section 12, the laser emitting part 2 is against the transition surface 10, and the laser emitting part 2 is configured to generate an adjustable laser spot shape.

[0024] The drill bit body 1 is a component used to drill into rock to achieve the purpose of drilling a hole. The drill bit is connected to a drill rod so that the drill bit can be driven to rotate through the drill rod.

[0025] The first side 14 of the drill bit body 1 is used for connecting the drill bit to a drill rod. The specific structure of the connection between the drill bit body 1 and the drill rod is well known to those skilled in the art and will not be described in detail here.

[0026] The through hole is used to install the laser emitting part 2 and enables the laser emitting part 2 to be fixed to the drill body 1 .

[0027] The laser emitting part 2 is accommodated in the second hole section 12. Since the aperture of the second hole section 12 is larger than the aperture of the first hole section 11, the laser emitting part 2 is against the transition surface 10 and cannot enter the first hole section 11. The laser emitting part 2 can be fixed by only fixing the end of the laser emitting part 2 close to the first side 14, making the fixing of the laser emitting part 2 more convenient and reliable. In addition, the first hole section 11 can be used for the laser emitted by the laser emitting part 2 to be emitted from the drill body 1.

[0028] The laser component is used to generate laser, and its structure and working principle are well known to those skilled in the art. The technical solution of this application does not involve any improvement to the structure of the laser component generating laser, so the detailed structure of the laser component will not be described in detail. In summary, the laser component usually includes a laser 4, an optical fiber 3 and a laser emitting unit 2. The laser generated by the laser 4 is sent to the laser emitting unit 2 through the optical fiber 3, and is emitted after being focused and adjusted in direction by the laser emitting unit 2. The laser emitting unit 2 can be selected from existing products that can adjust the shape of the laser spot, so that the shape of the laser spot generated by the laser emitting unit 2 is adjustable. The structure of the laser emitting unit 2 that can adjust the shape of the laser spot is well known to those skilled in the art, so it will not be described in detail here.

[0029] The laser component may further include a lens for focusing the laser light emitted by the laser emitting portion.

[0030] Since the shape of the laser spot formed by the laser emitting unit 2 is adjustable, the shape of the spot can be adjusted as needed during the drilling process, such as the shape of the spot can be adjusted to a square or a circle to meet different drilling requirements, thereby increasing the flexibility of the laser drill bit in breaking rocks.

[0031] In some embodiments, the side of the laser emitting portion 2 close to the transition surface 10 is a spherical surface, and the transition surface 10 is a spherical surface.

[0032] The spherical surface of the laser emitting part 2 and the spherical surface of the transition surface 10 cooperate with each other, so that when the laser emitting part 2 is installed, it is convenient to adjust the centering degree between the laser emitting part 2 and the drill body 1 .

[0033] In some embodiments, the laser emitting portion 2 and the second hole segment 12 are clearance-fitted.

[0034] On the one hand, the clearance fit between the laser emitting part 2 and the second hole section 12 facilitates the adjustment of the centering degree between the laser emitting part 2 and the drill body 1. On the other hand, the heat dissipation effect of the laser emitting part 2 can be increased.

[0035] In some embodiments, the drill body 1 is further provided with an abutment portion, which abuts against a side of the laser emitting portion 2 close to the first side 14 .

[0036] The abutting portion abuts against the laser emitting portion 2 , so that the laser emitting portion 2 can be fixed to the drill body 1 .

[0037] The abutting portion can be detachably connected to the drill body 1 , thereby enabling the laser emitting portion 2 to be detachably connected to the drill body 1 .

[0038] In some embodiments, the through hole further includes a third hole segment 13 , the aperture of the third hole segment 13 is larger than the aperture of the second hole segment 12 , and the abutment portion is accommodated in the third hole segment 13 and threadedly connected to the third hole segment 13 .

[0039] The outer peripheral wall of the abutting portion may be provided with threads, and the inner peripheral wall of the third hole section 13 may be provided with threads, so that the abutting portion and the third hole section 13 may be threadedly connected.

[0040] The abutment portion and the third hole section 13 are threadedly connected, which, on the one hand, enables the abutment portion to be detachably connected to the drill body 1 , and, on the other hand, enables the pressure of the abutment portion on the laser emitting portion 2 to be adjusted.

[0041] The aperture of the third hole segment 13 is larger than that of the second hole segment 12. On the one hand, the diameter of the abutment portion can be larger, so that the abutment portion can reliably contact the laser emitting portion 2. On the other hand, the third hole segment 13 can be used as an installation space. For example, the heat dissipation component for the laser emitting portion 2 can be arranged in the third hole segment 13.

[0042] In some embodiments, the abutting portion is provided with a threading hole, and the laser component further comprises an optical fiber 3 , and the optical fiber 3 is connected to the laser emitting portion 2 via the threading hole.

[0043] The optical fiber 3 enables the laser light generated by the laser 4 to be transmitted to the laser emitting section 2 .

[0044] The optical fiber 3 is passed through the threading hole, so that the abutting portion can also play a role in fixing and protecting the optical fiber 3.

[0045] In some embodiments, the abutting portion includes an outer ring body 5 and an inner ring body 8. The outer ring body 5 is connected to the drill body 1, and the outer ring body 5 abuts against the laser emitting portion 2. A threading hole is formed inside the inner ring body 8, the outer ring body 5 is arranged around the circumference of the inner ring body 8, and a buffer portion 7 is arranged between the outer ring body 5 and the inner ring body 8.

[0046] The material of the buffer portion 7 can be selected from existing materials.

[0047] The outer ring body 5 is used for threaded connection with the third hole section 13 .

[0048] The hollow structure of the inner ring body 8 forms a threading hole, so that the inner ring body 8 can be used to fix the optical fiber 3.

[0049] Since the drill body 1 is often in a vibrating state, the buffer portion 7 can buffer the impact force applied to the optical fiber 3 from the outside, thereby reducing the risk of damage to the optical fiber 3 .

[0050] In some embodiments, along the axial direction of the outer ring body 5 , the outer peripheral wall of the outer ring body 5 is provided with a notch through groove 6 .

[0051] On the one hand, the notched through groove 6 of the outer ring body 5 can reduce the weight of the outer ring body 5. On the other hand, the notched through groove 6 can also be used to ventilate and dissipate heat for the laser emitter. On the other hand, the notched through groove 6 can be used to lay pipes. For example, the laser emitting part 2 can be cooled by a liquid cooling device, and the cooling pipe of the liquid cooling device can enter the through hole through the notched through groove 6.

[0052] In some embodiments, the inner circumferential wall of the inner ring body 8 is provided with a plurality of flexible extrusion portions 9 .

[0053] On the one hand, when the optical fiber 3 is passed into the inner ring body 8, the multiple flexible extrusion parts 9 enable the optical fiber 3 to have an interference fit with the inner ring body 8, thereby increasing the reliability of fixing the optical fiber 3. On the other hand, the flexible extrusion parts 9 can also play a buffering role, transmitting the force from the drill body 1 to the optical fiber 3.

[0054] The flexible extrusion part 9 can be made of a suitable type from existing materials.

[0055] In some embodiments, a plurality of flexible extrusion portions 9 are arranged at intervals along the axial direction of the inner ring body 8 , and two adjacent flexible extrusion portions 9 are respectively arranged on both sides of the radial direction of the inner ring body 8 .

[0056] On the one hand, the above arrangement of the flexible extrusion part 9 saves the number of flexible extrusion parts 9 required in the inner ring body 8, saving costs. On the other hand, the flexible extrusion part 9 does not completely close the inner ring body 8, increasing the ventilation and heat dissipation effect on the optical fiber 3.

[0057] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made by ordinary technicians in this field to the technical solutions of the present invention should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A laser drill with adjustable spot shape, characterized in that: include: A drill bit body (1), wherein the drill bit body (1) is provided with a through hole along the axial direction of the drill bit body (1), the drill bit body (1) comprises a first side (14) cooperating with a drill rod, the through hole comprises a first hole section (11) and a second hole section (12), the second hole section (12) is close to the first side (14), the hole diameter of the second hole section (12) is larger than the hole diameter of the first hole section (11), and a transition surface (10) is provided between the second hole section (12) and the first hole section (11); A laser component comprises a laser emitting part (2), the laser emitting part (2) being accommodated in the second hole section (12), the laser emitting part (2) being against the transition surface (10), and the laser emitting part (2) being configured to generate a laser spot with an adjustable shape.

2. The laser drill bit with adjustable spot shape according to claim 1, characterized in that: The side of the laser emitting portion (2) close to the transition surface (10) is a spherical surface, and the transition surface (10) is a spherical surface.

3. The laser drill bit with adjustable spot shape according to claim 2, characterized in that: The laser emitting portion (2) and the second hole section (12) are clearance-fitted.

4. The laser drill bit with adjustable spot shape according to claim 1, characterized in that: The drill bit body (1) is also provided with abutment portion, the abutment portion abutting against a side of the laser emitting portion (2) close to the first side (14).

5. The laser drill bit with adjustable spot shape according to claim 4, characterized in that: The through hole further comprises a third hole segment (13), the hole diameter of the third hole segment (13) is larger than the hole diameter of the second hole segment (12), and the abutment portion is accommodated in the third hole segment (13) and is threadedly connected to the third hole segment (13).

6. The laser drill bit with adjustable spot shape according to claim 4, characterized in that: The abutment portion is provided with a threading hole, and the laser component further comprises an optical fiber (3), wherein the optical fiber (3) is connected to the laser emitting portion (2) via the threading hole.

7. The laser drill bit with adjustable spot shape according to claim 6, characterized in that: The abutting portion comprises: An outer ring body (5) connected to the drill bit body (1), the outer ring body (5) abutting against the laser emitting portion (2); The inner ring body (8) has the threading hole formed therein, the outer ring body (5) is arranged around the circumference of the inner ring body (8), and a buffer portion (7) is provided between the outer ring body (5) and the inner ring body (8).

8. The laser drill bit with adjustable spot shape according to claim 7, characterized in that: Along the axial direction of the outer ring body (5), the outer peripheral wall of the outer ring body (5) is provided with a notched through groove (6).

9. The laser drill bit with adjustable spot shape according to claim 7, characterized in that: The inner peripheral wall of the inner ring body (8) is provided with a plurality of flexible extrusion portions (9).

10. The laser drill bit with adjustable spot shape according to claim 9, characterized in that: Along the axial direction of the inner ring body (8), a plurality of the flexible extrusion portions (9) are arranged at intervals, and two adjacent flexible extrusion portions (9) are respectively arranged on both sides of the radial direction of the inner ring body (8).

Images