A laser shock wave micro-machining device with rotating beam preheating

Abstract

The invention discloses a laser shock wave micro-molding device for preheating rotating beams, which comprises a casing, a laser emitter is arranged at the inner top of the casing, and a first convex lens is arranged at the main optical axis of the laser emitter , a half-reflecting mirror and a second convex lens, the bottom end of the housing is provided with a light-transmitting port at the position corresponding to the main optical axis of the laser transmitter; the reflecting main optical axis of the half-reflecting mirror is provided with a total reflection mirror, so The total reflection mirror is connected with an adjustment ferrule that can adjust its reflection angle. In the present invention, a laser emitter, a first convex lens, a half-reflecting mirror and a second convex lens are arranged to emit laser light through the laser emitter, and the laser light is converted into parallel rays through the first convex lens and irradiated onto the half-reflecting mirror, and a part of the laser light passes through the half-reflecting mirror , and pass through the opening, irradiate on the second convex lens, and focus on the second convex lens, and set the workpiece to be processed at the focal point for laser processing.

Description

technical field [0001] The invention relates to the technical field of micro-modelling, in particular to a laser shock wave micro-modeling device for preheating with rotating beams. Background technique [0002] As early as the 1960s, relevant researchers discovered that when a laser pulse irradiates the surface of a solid material, the laser interacts with the material to generate a shock wave. Subsequently, the mechanical effects of laser-induced shock waves were gradually applied to the field of engineering technology, such as laser shock strengthening treatment on the surface of materials, that is, the use of laser-induced shock waves to improve the performance of materials such as fatigue resistance, wear and stress corrosion; and laser layer cracking hair coating. The detection of the bonding strength of the layer interface is to use the characteristics of the tensile stress generated when the laser-induced shock wave is reflected at the bonding interface of different ...

AI Technical Summary

Problems solved by technology

[0004] However, the laser shock wave micro-modeling in the prior art is limited by several shortcomings. Due to the high-speed and high-pressure stamping behavior of the laser shock wave on the micro-area of ​​the modeling, when processing metal materials with poor plasticity, high-energy laser shocks are likely to cause other defects. Surface cracking and spattering, resulting in poor quality micro-modelling, which cannot be adjusted, allowing separate processing of poorly-formed and better-formed materials

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