High-speed cladding myriawatt laser head device for ultra-long deep hole inner wall

Abstract

The invention relates to the field of laser processing equipment devices, in particular to a high-speed cladding myriawatt laser head device for an ultra-long deep hole inner wall, which comprises a laser head with a myriawatt-level laser device internally provided with a light path system, and a deep hole self-adaptive mechanism adaptive to the laser head to realize adjustability, the heat dissipation system is formed by cooperation of a water cooling channel and an air cooling channel. Compared with the prior art, the laser head device has the advantages that the myriawatt-level laser, a light path system internally provided with an integrated collimating lens set and a dynamic focusing lens set and the like are adopted in the laser head device, the adjustable deep hole self-adaptive mechanism is matched, the uniformity of cladding machining light spots in a hole is improved to 95%, the cladding efficiency reaches 2.5 m < 2 > / h, and the laser head device is suitable for large-scale production. The thickness error of a cladding layer on the inner wall of the deep hole is smaller than or equal to + / -0.1 mm, the porosity is smaller than 0.5%, and the continuous working life of a laser cladding device is longer than or equal to 500 h by adopting a heat dissipation mode combining air cooling and water cooling.

Description

Technical Field

[0001] The present invention relates to the field of laser processing equipment, and in particular to a 10,000-watt laser head device for high-speed cladding of the inner wall of an ultra-long deep hole. Background Art

[0002] Ultra-long, deep-hole cladding technology places extremely high demands on the equipment's laser output stability, optical transmission efficiency, and spatial adaptability. Traditional laser heads, due to their large beam divergence and insufficient focus depth, struggle to achieve uniform energy distribution within deep holes. Furthermore, high power lasers pose significant heat dissipation issues, leading to defects such as pores and cracks in the cladding layer.

[0003] In the existing technology, the methods of segmented processing or robot-assisted processing are inefficient and costly. There is an urgent need for a dedicated laser head device that integrates high-power laser output, deep-hole adaptive optical path and efficient heat dissipation. Summary of the Invention

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the present invention is that the current ultra-long deep hole inner wall cladding processing equipment has low efficiency and high cost, and the inner wall of the deep hole after processing has quality defects such as pores and cracks.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the present invention provides a technical solution: a 10,000-watt laser head device for high-speed cladding of the inner wall of an ultra-long deep hole, comprising a laser head.

[0008] The laser head body adopts a segmented water-cooling structure and has a built-in 10,000-watt fiber laser.

[0009] It also includes a deep hole adaptive mechanism that drives the laser head to adjust and move to improve its adaptability.

[0010] And a multi-channel collaborative heat dissipation system that uses water cooling channels and air cooling channels in parallel.

[0011] Furthermore, the fiber laser has an output wavelength of 1070 nm and a power within the range of 10-20 kW.

[0012] Furthermore, an integrated collimating lens group and a dynamic focusing lens group are installed in the optical path system of the fiber laser, the focusing depth of which is 0.5-5m and the spot diameter is ≤1mm.

[0013] Furthermore, the deep hole adaptive mechanism includes a retractable light guide arm, the laser head is mounted on the front end of the retractable light guide arm, and an angle-adjustable reflector is mounted on the end of the light guide arm.

[0014] Further, the adjustable-angle reflector has an adjustment range of ±30°.

[0015] Further, the surface of the light guide arm is coated with a high-temperature resistant ceramic layer, and the temperature resistance is ≥1200 °C.

[0016] Further, in the multi-channel collaborative heat dissipation system, the water-cooling channel flow rate is ≥20 L / min.

[0017] Further, in the multi-channel collaborative heat dissipation system, the air-cooling channel adopts a nitrogen circulation system.

[0018] III. Beneficial Effects

[0019] The advantages of the present invention compared with the prior art are as follows: The laser head device adopts a multi-kilowatt laser, an optical path system integrating a collimating lens group and a dynamic focusing lens group, etc., and is combined with an adjustable deep-hole adaptive mechanism to improve the uniformity of the cladding processing spot in the hole to 95%, and the cladding efficiency reaches 2.5 m 2 / h, the thickness error of the cladding layer on the inner wall of the deep hole is ≤±0.1 mm, the porosity is <0.5%, and a heat dissipation method combining air cooling and water cooling is adopted to make the continuous working life of the laser cladding device ≥500 h. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the external structure of a high-speed cladding multi-kilowatt laser head device for the inner wall of an ultra-long deep hole of the present invention.

[0021] As shown in the figure: 1. Laser head, 2. Light guide arm, 3. Adjustable-angle reflector. Detailed Embodiment

[0022] The following further describes the present invention in detail with reference to the drawings.

[0023] To solve the above technical problems, the technical solution provided by the present invention is: A high-speed cladding multi-kilowatt laser head device for the inner wall of an ultra-long deep hole, combined with the attached Figure 1 , includes a laser head 1. The main body of the laser head 1 adopts a segmented water-cooling structure and is internally provided with a multi-kilowatt fiber laser. The output wavelength of the fiber laser is 1070 nm, and the power is in the range of 10-20 kW;

[0024] In the optical path system of the fiber laser, an integrated collimating lens group and a dynamic focusing lens group are installed. Its focusing depth is 0.5-5 m, and the spot diameter is ≤1 mm, realizing the beam focusing at different depths in the deep hole;

[0025] The laser module is connected to the light guide arm 2 through a flange, and the optical path in the light guide arm 2 is transmitted by a fiber bundle;

[0026] It also includes a deep-hole adaptive mechanism that supports the driving of the laser head 1 to adjust its movement to improve its adaptability. The deep-hole adaptive mechanism includes a telescopic light guide arm 2 with a maximum extended length of 10 m. The surface of the light guide arm 2 is coated and connected with a high-temperature resistant ceramic layer with a temperature resistance of ≥1200 °C. The laser head 1 is installed at the front end of the telescopic light guide arm 2. An angle-adjustable reflector 3 is installed at the end of the light guide arm 2. The adjustment range of the angle-adjustable reflector 3 is ±30°, which is suitable for deep holes with different apertures in the range of Φ50 - 500 mm. Adjust the extended length of the light guide arm 2 according to the depth of the deep hole, and adjust the incident angle of the light beam through the reflector.

[0027] And a multi-channel collaborative heat dissipation system that adopts a parallel mode of a water-cooling channel and an air-cooling channel. In the multi-channel collaborative heat dissipation system, the flow rate of the water-cooling channel is ≥20 L / min. The air-cooling channel in the multi-channel collaborative heat dissipation system adopts a nitrogen circulation system to ensure that the temperature rise of the laser is ≤5 °C / h.

[0028] In the specific implementation of the present invention, when the laser head 1 performs cladding processing on the inner wall of an ultra-long deep hole, according to the depth of the deep hole, adjust the elongation degree of the light guide arm 2. At the same time, adjust the incident angle of the light beam emitted by the laser head 1 through the angle-adjustable reflector 3. The multi-kilowatt fiber laser built into the laser head 1 can achieve beam focusing at different depths inside the deep hole, with wide adjustability and flexibility. While performing laser cladding processing on the inner wall of the hole, both the water-cooling and air-cooling systems are started. Set its laser power to 12 kW and the scanning speed to 800 mm / s to achieve a good heat dissipation effect.

[0029] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the spirit of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A high-speed cladding ten-thousand-watt laser head device for the inner wall of ultra-long deep holes, comprising a laser head (1), characterized in that: The main body of the laser head (1) adopts a segmented water-cooling structure and is internally provided with a ten-thousand-watt fiber laser; It further includes a deep-hole adaptive mechanism that drives the laser head (1) to adjust and move to improve its adaptability; And a multi-channel collaborative heat dissipation system that adopts a parallel mode of a water-cooling channel and an air-cooling channel.

2. The high-speed cladding ten-thousand-watt laser head device for the inner wall of an ultra-long deep hole according to claim 1, wherein: The output wavelength of the fiber laser is 1070 nm, and the power is in the range of 10 - 20 kW.

3. The high-speed cladding ten-thousand-watt laser head device for the inner wall of an ultra-long deep hole according to claim 2, wherein: An integrated collimating mirror group and a dynamic focusing mirror group are installed in the optical path system of the fiber laser, and its focusing depth is 0.5 - 5 m, and the spot diameter ≤ 1 mm.

4. The high-speed cladding ten-thousand-watt laser head device for the inner wall of an ultra-long deep hole according to claim 1, characterized in that: The deep-hole adaptive mechanism includes a telescopic light guide arm (2), the laser head (1) is installed at the front end of the telescopic light guide arm (2), and an angle-adjustable reflector (3) is installed at the end of the light guide arm (2).

5. The high-speed cladding ten-thousand-watt laser head device for the inner wall of an ultra-long deep hole according to claim 4, wherein: The adjustment range of the angle-adjustable reflector (3) is ±30°.

6. The high-speed cladding ten-thousand-watt laser head device for the inner wall of an ultra-long deep hole according to claim 4, wherein: The surface of the light guide arm (2) is coated and connected with a high-temperature resistant ceramic layer, and the temperature resistance ≥ 1200 °C.

7. The high-speed cladding ten-thousand-watt laser head device for the inner wall of an ultra-long deep hole according to claim 1, characterized in that: In the multi-channel collaborative heat dissipation system, the flow rate of the water-cooling channel ≥ 20 L / min.

8. The high-speed cladding ten-thousand-watt laser head device for the inner wall of an ultra-long deep hole according to claim 1, wherein: In the multi-channel collaborative heat dissipation system, the air-cooling channel adopts a nitrogen circulation system.

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