Laser Drilling Device and Method for Improving Drilling Quality Based on Vacuum Environment
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A vacuum environment and laser drilling technology, which is applied in laser welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of reducing the cooling performance of air film holes, affecting the service life, and reducing the mechanical properties of holes, so as to improve the inner wall of holes The effect of improving quality, improving work efficiency, and improving absorption rate
Active Publication Date: 2020-07-31
JIANGSU UNIV
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[0003] For some high-precision instruments, it is necessary to drill high-quality tiny group holes, such as air film cooling holes on turbine blades of aero-engines, which have high requirements on the taper of the holes and the quality of the inner wall. Affect the flow rate of air in the air film hole on the turbine blade, reduce the cooling performance of the air film hole, and poor inner wall quality will reduce the mechanical properties of the hole and affect the service life
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[0049] In order to better illustrate the implementation details of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings.
[0050] combined with figure 1 , a laser drilling device based on a vacuum environment to improve the quality of hole making, including a power supply and a controller 1, an x-y mobile platform 2, an auxiliary platform 3 external to a vacuum chamber, a support base 4, a vacuum chamber 5, high-transparency glass 6, and a laser head 7. CCD camera 8, laser 9, light guide tube 10, z-direction moving device 11, moving fixture device 12, hose interface 13, hose 14, air valve 15, air pressure gauge 16, vacuum pump 17, fixed pipeline 18.
[0051] The power supply and controller 1 are placed on the left side wall of the machine tool base, and the x-y mobile platform 2 is installed on the base upper surface of the machine tool; the external auxiliary platform 3 of the vac...
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Abstract
The invention discloses a vacuum environment-based laser drilling device and method for improving hole forming quality, and relates to the technical field of laser drilling. The vacuum environment-based laser drilling device comprises a power supply, a controller, an x-y moving platform, a vacuum cabin external auxiliary platform, a support base, a vacuum cabin, high-strength and high-transmittance glass, a laser head, a CCD camera, a light guide pipe, a z-direction moving device, a mobile clamp device, a flexible pipe interface, a flexible pipe, an air valve, an air pressure meter, a vacuum pump and a fixed pipeline. According to the principle that the generation of laser drilling photo-induced plasma can be reduced in a vacuum environment and no oxidation-nitridation reaction in the vacuum environment is generated, the hole forming taper is reduced by laser drilling in the vacuum environment, re-casting layer is suppressed, microcrack is reduced, the quality of micropore inner wall is improved, the service lifetime of a base material is prolonged, and meanwhile, the deep hole processing capability is improved.
Description
technical field [0001] The invention relates to the technical field of laser drilling, in particular to a laser drilling device and method for improving the quality of hole making based on a vacuum environment. Background technique [0002] At present, laser drilling technology has been applied to many industries such as automobile industry, shipbuilding, aerospace, instrumentation and medical technology. Compared with traditional mechanical drilling methods, laser drilling technology has the advantages of high precision, fast speed, high efficiency, good economic benefits, no tool loss, and large depth-to-diameter ratio. It has become one of the main application fields of laser processing. [0003] For some high-precision instruments, it is necessary to drill high-quality tiny group holes, such as air film cooling holes on turbine blades of aero-engines, which have high requirements on the taper of the holes and the quality of the inner wall. The flow rate of air in the ai...
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