Laser beam differential rotation auxiliary drilling device and using method

Abstract

The invention relates to a laser beam differential rotation auxiliary drilling device which comprises a reflection cambered mirror support, a laser head assembly, a mirror set cylinder assembly, a driving assembly, a high-pressure nozzle assembly and a hollow drill bit. The reflecting cambered mirror support is connected to the upper end of the laser head assembly, the lower end of the laser head assembly is connected with the mirror set barrel assembly, the lower end of the mirror set barrel assembly is connected with the driving assembly, the lower end of the driving assembly is connected with the high-pressure nozzle assembly, and the lower end of the high-pressure nozzle assembly is connected with the hollow drill bit. According to the laser beam differential rotation auxiliary drilling device, the defects in the prior art are overcome, the machining time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a laser beam differential rotation auxiliary drilling device and a use method thereof. Background Art

[0002] With the rapid development of lasers, laser-assisted processing technology has gradually been proposed. It is a new cutting-edge processing technology that uses a high-energy-density laser beam to focus on the surface of the workpiece to quickly melt, vaporize or directly sublimate the material, damage the workpiece, and then use a tool to further remove the material.

[0003] In modern industrial processing, drilling of high-hardness materials has always been a difficult problem. Traditional drilling often relies on direct contact cutting between the tool and the material, which not only easily causes rapid wear of the tool, but also has low efficiency and difficulty in ensuring accuracy when processing high-hardness surfaces.

[0004] Therefore, in order to solve the above problems, a laser beam differential rotation auxiliary drilling device and a use method are proposed. Summary of the invention

[0005] The purpose of the present invention is to overcome the existing defects and provide a laser beam differential rotation auxiliary drilling device, which shortens the processing time and improves the production efficiency.

[0006] The technical solution to achieve the above object is: a laser beam differential rotation auxiliary drilling device, including a reflective arc mirror bracket, a laser head assembly, a mirror group barrel assembly, a drive assembly, a high-pressure nozzle assembly and a hollow drill bit; The reflective arc mirror bracket is connected to the upper end of the laser head assembly, the lower end of the laser head assembly is connected to the mirror group barrel assembly, the lower end of the mirror group barrel assembly is connected to the drive assembly, the lower end of the drive assembly is connected to the high-pressure nozzle assembly, and the lower end of the high-pressure nozzle assembly is connected to the hollow drill bit.

[0007] Preferably, the lower end surface of the reflective arc mirror bracket is embedded with a arc mirror.

[0008] Preferably, the laser head assembly includes a laser head housing and a laser head; the laser head is connected inside the laser head housing, the output end of the laser head is downward, the upper end surface of the laser head housing is connected to the reflective arc mirror bracket, a cable channel is opened in the middle of the reflective arc mirror bracket, and the laser head is supplied with energy through the cable channel.

[0009] Preferably, the lens group barrel assembly includes a lens group barrel, an upper beam protection mirror, a lower beam protection mirror and a reflecting mirror; the lens group barrel is connected to the lower end surface of the laser head housing, the upper beam protection mirror is connected to the lens group barrel, the lower beam protection mirror is connected below the upper beam protection mirror, and the reflecting mirror is connected below the lower beam protection mirror.

[0010] Preferably, the driving assembly includes a brush upper outer shell and a speed regulating motor; the brush upper outer shell is located below the mirror group barrel, the speed regulating motor is arranged inside the brush upper outer shell, and the output end of the speed regulating motor is upwardly connected to a slot opened at the lower end of the mirror group barrel; a brush is arranged below the brush upper outer shell, and the brush is connected to the speed regulating motor through motor wiring.

[0011] Preferably, it also includes a high-pressure nozzle lower outer shell, the upper end of the high-pressure nozzle lower outer shell is connected to the brush upper outer shell, and the lower end is connected to the hollow drill bit through a fastening bolt hole, a fastening bolt and a fastening ring.

[0012] Preferably, a high-pressure nozzle is arranged inside the lower outer shell of the high-pressure nozzle, a high-pressure nozzle water inlet is arranged on one side of the high-pressure nozzle, and a high-pressure nozzle water outlet is arranged at the lower end, and the high-pressure nozzle water outlet is connected to the hollow hole inside the drill bit of the hollow drill bit.

[0013] A method for using a laser beam differential rotation auxiliary drilling device comprises the following steps: Step 1: Turn on the high-pressure nozzle, adjust the water flow and pressure to appropriate parameters, and spray the water stably on the surface to be processed; Step 2: Start the speed regulating motor and set the rotation parameters according to the processing material and process requirements, so that the mirror tube drives the reflector to rotate differentially, and start the laser head to generate a dimming infrared beam. After determining the processing path, the beam path is generated, passes through the upper beam protection mirror and the lower beam protection mirror, and is reflected by the reflector to the arc mirror of the reflective arc mirror bracket, and focused on the surface to be processed, thereby realizing the differential rotation irradiation of the beam path on the surface to be processed, and continuing the drilling process until the predetermined drilling depth and quality requirements are reached.

[0014] The beneficial effects of the present invention are: the laser beam differential rotation auxiliary drilling device and the use method have the advantage of strong high-hardness surface processing capability: the speed regulating motor drives the mirror group barrel to rotate differentially, so that the reflector continuously changes the path of the focal point of the laser beam, and realizes the differential rotation irradiation of the laser beam on the surface to be processed. Through the differential rotation of the laser beam, the energy of the processing area can be guaranteed to be evenly distributed, thereby effectively coping with the processing difficulties of high-hardness materials.

[0015] It has the advantage of reducing tool wear: start the high-pressure nozzle, and the water flows through the internal channel from the drill hole to the surface to be processed, which plays a role in cooling and chip removal. Laser processing reduces the direct contact cutting between the tool and the material, significantly reduces the degree of tool wear, extends the tool life, and reduces processing costs.

[0016] It has the advantage of high processing efficiency: the speed regulating motor is fixed inside the outer shell of the brush, and the speed regulating motor is connected to the mirror group barrel. The speed regulating motor can drive the mirror group barrel to rotate differentially, thereby changing the path of the laser beam focus point and realizing uniform laser energy irradiation to the processing area. The differential rotation of the laser beam can realize fast and uniform processing of the processing area, which greatly shortens the processing time and improves production efficiency compared with traditional processing methods.

[0017] It has the advantage of high processing precision: the embedded reflector is set in the mirror assembly tube, which is used to receive the light beam from the laser head through the beam protection mirror and reflect it to the arc mirror of the reflective arc mirror bracket, and the arc mirror then reflects the light beam to the surface to be processed. The precise reflector system and speed control motor can achieve precise focusing and multi-angle irradiation of the laser beam, ensuring the drilling accuracy and surface quality, and meeting the needs of high-precision processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a laser beam differential rotation auxiliary drilling device of the present invention; Figure 2 is a cross-sectional view of the laser beam differential rotation auxiliary drilling device of the present invention; Figure 3 is a detailed view of the interior of the laser head housing of the present invention; Figure 4 is a detailed view of the interior of the upper outer shell of the brush of the present invention; Figure 5 It is a detailed view of the interior of the lower outer shell of the high-pressure nozzle of the present invention.

[0019] In the figure: 1. reflective arc mirror bracket; 2. laser head shell; 3. mirror assembly barrel; 4. brush upper shell body; 5. high-pressure nozzle lower shell body; 6. hollow drill bit; 7. arc mirror; 8. laser head; 9. reflector; 10. speed control motor; 11. brush; 12. high-pressure nozzle; 13. cable channel; 14. upper beam protection mirror; 15. lower beam protection mirror; 16. beam path; 17. slot; 18. motor wiring; 19. high-pressure nozzle water inlet; 20. high-pressure nozzle water outlet; 21. fastening bolt hole; 22. fastening ring; 23. hollow hole inside the drill bit. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 1-5 As shown, a laser beam differential rotation assisted drilling device includes a reflective arc mirror bracket 1, a laser head assembly, a lens group barrel assembly, a drive assembly, a high-pressure nozzle assembly and a hollow drill bit 6; the reflective arc mirror bracket 1 is connected to the upper end of the laser head assembly, the lower end of the laser head assembly is connected to the lens group barrel assembly, the lower end of the lens group barrel assembly is connected to the drive assembly, the lower end of the drive assembly is connected to the high-pressure nozzle assembly, and the lower end of the high-pressure nozzle assembly is connected to the hollow drill bit 6.

[0023] Specifically, the lower end surface of the reflective arc mirror bracket 1 is embedded with the arc mirror 7. The laser head assembly includes a laser head housing 2 and a laser head 8; the laser head 8 is connected inside the laser head housing 2, the output end of the laser head 8 is downward, the upper end surface of the laser head housing 2 is connected to the reflective arc mirror bracket 1, a cable channel 13 is provided in the middle of the reflective arc mirror bracket 1, and the laser head 8 is connected to the cable channel 13 for energy supply. The lens group barrel assembly includes a lens group barrel 3, an upper beam protection mirror 14, a lower beam protection mirror 15 and a reflector 9; the lens group barrel 3 is connected to the lower end surface of the laser head housing 2, the upper beam protection mirror 14 is connected to the lens group barrel 3, the lower part of the upper beam protection mirror 14 is connected to the lower beam protection mirror 15, and the lower part of the lower beam protection mirror 15 is connected to the reflector 9.

[0024] Specifically, the inner circle of the reflective arc mirror bracket 1 is embedded with the arc mirror 7, and the arc mirror 7 is in the shape of an umbrella; the inclination angle of the reflective arc mirror bracket 1 is 10 degrees, and a cable channel 13 is provided in the center, and the lower part of the channel 13 is connected to the upper part of the channel of the laser head shell 2 and is bolted, and the reflective arc mirror bracket 1 can be adjusted up and down along the cable channel through hole to fix the position, and the energy of the laser head 8 is supplied through the cable channel 13 wiring; a countersunk hole is opened on the upper part of the shell wall of the laser head shell 2, and a laser head 8 is arranged inside, and a threaded hole is arranged on the upper part of the laser head 8, which is connected and fixed to the laser head shell 2, and an upper beam protection mirror 14 is arranged on the lower part and is bolted to the lens group barrel 3; a lower beam protection mirror 15 is arranged on the upper part of the lens group barrel 3, and an embedded reflector 9 is arranged inside, and the reflector 9 is in the shape of a trumpet, and the left and right sides are respectively the first and second reflectors, and a bolt hole is arranged at the bottom of the reflector 9 and is bolted and fixed to the lens group barrel 3, and a slot 17 is arranged at the lower part of the lens group barrel 3 to connect to the speed regulating motor 10. The laser head 8 emits a beam path 16 that passes through the upper beam protection mirror 14 and the lower beam protection mirror 15, and is reflected by the first and second reflectors of the reflector 9. Further, it is reflected to the arc mirror 7 of the reflective arc mirror bracket 1 and forms a certain angle and focuses on the surface to be processed of the workpiece to be processed.

[0025] Specifically, the driving assembly includes a brush upper outer shell 4 and a speed regulating motor 10; the brush upper outer shell 4 is located below the mirror group barrel 3, the speed regulating motor 10 is arranged inside the brush upper outer shell 4, and the output end of the speed regulating motor 10 is upwardly connected to the slot 17 opened at the lower end of the mirror group barrel 3; a brush 11 is arranged below the brush upper outer shell 4, and the brush 11 is connected to the speed regulating motor 10 through the motor connection 18.

[0026] Specifically, a countersunk hole is opened on the upper part of the brush upper shell body 4, and a speed regulating motor 10 is arranged inside. The upper part of the speed regulating motor 10 is provided with a threaded hole, which is connected and fixed to the brush upper shell body 4. The lower part of the brush upper shell body 4 is fixedly embedded with a brush 11, which is connected to the motor wiring 18 at the lower part of the speed regulating motor 10 for supplying power to the speed regulating motor 10, and the lower part of the brush upper shell body 4 is provided with a bolt hole, which is bolted to the lower shell body 5 of the high-pressure nozzle; the speed regulating motor 10 is connected to the lens group barrel 3, so that the motor 10 can control the rotation speed of the lens group barrel 3, and further, the hollow drill bit 6 and the beam path 16 can be differentially acted on the surface to be processed of the workpiece to be processed.

[0027] Specifically, it also includes a high-pressure nozzle lower housing 5, the upper end of the high-pressure nozzle lower housing 5 is connected to the brush upper housing 4, and the lower end is connected to the hollow drill bit 6 through the fastening bolt hole 21, the fastening bolt and the fastening ring 22. A high-pressure nozzle 12 is arranged inside the high-pressure nozzle lower housing 5, a high-pressure nozzle water inlet 19 is arranged on one side of the high-pressure nozzle 12, and a high-pressure nozzle water outlet 20 is arranged at the lower end, and the high-pressure nozzle water outlet 20 is connected to the hollow hole 23 inside the drill bit of the hollow drill bit 6.

[0028] Specifically, a threaded hole is provided on the upper part of the lower shell body 5 of the high-pressure nozzle, and is connected to the upper shell body 4 of the brush by bolts. A high-pressure nozzle 12 is provided inside the lower shell body 5 of the high-pressure nozzle, and its nozzle water inlet 19 is connected to the water inlet hole of the shell wall of the shell body, and its high-pressure nozzle water outlet 20 is connected to the hollow drill bit 6, so that the high-pressure water passes through the hollow hole 23 inside the drill bit to cool the surface to be processed; the upper part of the hollow drill bit 6 is connected to the notch, and the notch wall is provided with a bolt hole 21, and the lower part is sleeved with a fastening ring 22 to fasten the hollow drill bit 6 to stabilize the processing accuracy. Finally, when the device is processed, the laser head 8 emits a beam path 16, passes through the upper beam protection mirror 14 and the lower beam protection mirror 15, and is reflected to the arc mirror 7 of the reflective arc mirror bracket 1, and forms a certain angle and focuses on the surface to be processed of the workpiece to be processed; the speed of the mirror group barrel 3 is controlled by the speed regulating motor 10, and further, the hollow drill bit 6 and the beam path 16 can be differentially acted on the surface to be processed of the workpiece to be processed.

[0029] During installation, the high-pressure nozzle 12 is installed inside the lower outer shell 5 of the high-pressure nozzle and fixed, and the water outlet 20 of the high-pressure nozzle is connected to the channel of the hollow hole 23 inside the drill bit to ensure that water can flow smoothly.

[0030] The speed regulating motor 10 is fixed inside the outer shell 4 embedded in the brush, and connected to the mirror assembly barrel 3 to ensure that the rotation of the speed regulating motor 10 can drive the mirror assembly barrel 3 to rotate stably.

[0031] Install the embedded reflector 9, the upper beam protection mirror 14, and the lower beam protection mirror 15 in the corresponding positions in sequence, install the laser head 8 in the laser head housing 2, and adjust the relative position of the laser head 8 and the embedded reflector 9, install the reflective arc mirror bracket 1 on the upper part of the laser head housing 2, and adjust the arc mirror 7 to ensure that the light beam path 16 can be accurately received and reflected to the arc mirror 7 through the embedded reflector 9, and focused on the surface to be processed.

[0032] Finally, the hollow drill bit 6 is connected to the lower outer shell 5 of the high-pressure nozzle, and the hollow drill bit 6 is fixed by the fastening ring 22 and its fixing bolt hole 21 to complete the assembly of the entire device.

[0033] A method for using a laser beam differential rotation auxiliary drilling device comprises the following steps: Step 1, turn on the high pressure nozzle 12, adjust the water flow and pressure to appropriate parameters, so that the water flow is stably sprayed on the surface to be processed; Step 2, start the speed regulating motor 10, set the rotation parameters according to the processing material and process requirements, so that the mirror group barrel 3 drives the reflector 9 to rotate differentially, and start the laser head 8 to generate a dimming infrared light beam. After determining the processing path, a beam path 16 is generated, which passes through the upper beam protection mirror 14 and the lower beam protection mirror 15, and is reflected by the reflector 9 to the arc mirror 7 of the reflective arc mirror bracket 1, and is focused on the surface to be processed, thereby realizing the differential rotation irradiation of the beam path 16 on the surface to be processed, and continuously performing drilling processing until the predetermined drilling depth and quality requirements are reached.

[0034] The laser beam differential rotation auxiliary drilling device and the use method thereof have the advantage of strong high-hardness surface processing capability: the speed regulating motor drives the mirror group barrel to rotate differentially, so that the reflector continuously changes the path of the focal point of the laser beam, and realizes the differential rotation irradiation of the laser beam on the surface to be processed. Through the differential rotation of the laser beam, the energy of the processing area can be evenly distributed, thereby effectively coping with the processing difficulties of high-hardness materials.

[0035] It has the advantage of reducing tool wear: start the high-pressure nozzle, and the water flows through the internal channel from the drill hole to the surface to be processed, which plays a role in cooling and chip removal. Laser processing reduces the direct contact cutting between the tool and the material, significantly reduces the degree of tool wear, extends the tool life, and reduces processing costs.

[0036] It has the advantage of high processing efficiency: the speed regulating motor is fixed inside the outer shell of the brush, and the speed regulating motor is connected to the mirror group barrel. The speed regulating motor can drive the mirror group barrel to rotate differentially, thereby changing the path of the laser beam focus point and realizing uniform laser energy irradiation to the processing area. The differential rotation of the laser beam can realize fast and uniform processing of the processing area, which greatly shortens the processing time and improves production efficiency compared with traditional processing methods.

[0037] It has the advantage of high processing precision: the embedded reflector is set in the mirror assembly tube, which is used to receive the light beam from the laser head through the beam protection mirror and reflect it to the arc mirror of the reflective arc mirror bracket, and the arc mirror then reflects the light beam to the surface to be processed. The precise reflector system and speed control motor can achieve precise focusing and multi-angle irradiation of the laser beam, ensuring the drilling accuracy and surface quality, and meeting the needs of high-precision processing.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser beam differential rotation assisted drilling device, characterized in that: It comprises a reflective arc mirror bracket (1), a laser head assembly, a mirror assembly barrel assembly, a drive assembly, a high-pressure nozzle assembly and a hollow drill bit (6); The reflective arc mirror bracket (1) is connected to the upper end of the laser head assembly, the lower end of the laser head assembly is connected to the mirror assembly barrel assembly, the lower end of the mirror assembly barrel assembly is connected to the drive assembly, the lower end of the drive assembly is connected to the high-pressure nozzle assembly, and the lower end of the high-pressure nozzle assembly is connected to the hollow drill bit (6).

2. The laser beam differential rotation assisted drilling device according to claim 1, characterized in that: The lower end surface of the reflective curved mirror bracket (1) is embedded and connected to the curved mirror (7).

3. The laser beam differential rotation assisted drilling device according to claim 1, characterized in that: The laser head assembly comprises a laser head housing (2) and a laser head (8); the laser head (8) is connected to the inside of the laser head housing (2), the output end of the laser head (8) is downwardly directed, the upper end surface of the laser head housing (2) is connected to the reflective arc mirror bracket (1), a cable channel (13) is provided in the middle of the reflective arc mirror bracket (1), and the laser head (8) is connected to the cable channel (13) for energy supply.

4. The laser beam differential rotation assisted drilling device according to claim 3, characterized in that: The lens assembly barrel assembly comprises a lens assembly barrel (3), an upper beam protection mirror (14), a lower beam protection mirror (15) and a reflector (9); the lens assembly barrel (3) is connected to the lower end surface of the laser head housing (2); the upper beam protection mirror (14) is connected to the lens assembly barrel (3); the lower portion of the upper beam protection mirror (14) is connected to the lower beam protection mirror (15); and the lower portion of the lower beam protection mirror (15) is connected to the reflector (9).

5. The laser beam differential rotation assisted drilling device according to claim 4, characterized in that: The drive assembly comprises a brush upper outer shell (4) and a speed regulating motor (10); the brush upper outer shell (4) is located below the mirror assembly barrel (3); the speed regulating motor (10) is arranged inside the brush upper outer shell (4); the output end of the speed regulating motor (10) is connected upward to a slot (17) opened at the lower end of the mirror assembly barrel (3); a brush (11) is arranged below the brush upper outer shell (4); the brush (11) is connected to the speed regulating motor (10) via a motor connection (18).

6. The laser beam differential rotation assisted drilling device according to claim 5, characterized in that: It also comprises a high-pressure nozzle lower outer shell (5), the upper end of the high-pressure nozzle lower outer shell (5) is connected to the brush upper outer shell (4), and the lower end is connected to the hollow drill bit (6) via a fastening bolt hole (21), a fastening bolt and a fastening ring (22).

7. The laser beam differential rotation assisted drilling device according to claim 6, characterized in that: A high-pressure nozzle (12) is arranged inside the high-pressure nozzle lower outer shell (5), a high-pressure nozzle water inlet (19) is arranged on one side of the high-pressure nozzle (12), and a high-pressure nozzle water outlet (20) is arranged at the lower end, and the high-pressure nozzle water outlet (20) is connected to the hollow hole (23) inside the hollow drill bit (6).

8. A method for using a laser beam differential rotation assisted drilling device, characterized in that: The following steps are involved: Step 1, turning on the high-pressure nozzle (12), adjusting the water flow rate and pressure to appropriate parameters, so that the water flow is stably sprayed on the surface to be processed; Step 2, starting the speed regulating motor (10), setting the rotation parameters according to the processing material and process requirements, so that the mirror assembly barrel (3) drives the reflector (9) to perform differential rotation, and starting the laser head (8) to generate a dimming infrared light beam. After determining the processing path, a light beam path (16) is generated, which passes through an upper beam protection mirror (14) and a lower beam protection mirror (15), and is reflected by the reflector (9) to the arc mirror (7) of the reflective arc mirror bracket (1), and is focused on the surface to be processed, thereby realizing differential rotation irradiation of the light beam path (16) on the surface to be processed, and continuously performing drilling processing until the predetermined drilling depth and quality requirements are reached.

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