Device for composite manufacturing based on laser shock peening and laser additive and subtractive manufacturing
A laser shock strengthening and impact strengthening technology, applied in the field of composite manufacturing devices, can solve the problems of low geometric dimensional accuracy, large residual tensile stress, and many internal defects of SLM molded parts, achieve defect-free residual compressive stress, and improve fatigue resistance. , the effect of dense tissue
Inactive Publication Date: 2020-11-27
SHANGHAI UNIV OF ENG SCI
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the defects of low geometric dimension accuracy, poor surface quality, large residual tensile stress and many internal defects of SLM forming parts in the prior art, and then provide a kind of manufacturing equipment that realizes high precision and integrated near-net shape
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[0057] Below in conjunction with the accompanying drawings, the specific implementation of the present invention will be further elaborated, taking the manufacture of 316 stainless steel capillary as an example.
[0058] A device for composite manufacturing based on laser shock strengthening and laser addition and subtraction, such as figure 1 As shown, it includes a sealed molding chamber 2, an inert protective gas source 1, a processing and molding platform 5, an optical path selection system 3 and a control device 6 (computer);
[0059] The inert protective gas source 1 is connected to the sealing molding chamber 2 to provide inert protective gas for the sealing molding chamber 2;
[0060] The processing and forming platform 5 is arranged in the sealed molding chamber 2, wherein the optical path selection system 3 is arranged above the processing and forming platform 5;
[0061] The processing and forming platform 5 is circular as a whole, and it includes a processing plat...
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Abstract
The invention discloses a device for composite manufacturing based on laser shock peening and laser additive and subtractive manufacturing. The device comprises a sealed forming chamber, an inert protective gas source and a machining forming platform; the inert protective gas source is connected with the sealed forming chamber; the machining forming platform is arranged in the sealed forming chamber, and a light path selecting system is arranged right over the machining forming platform; and the machining forming platform is integrally circular and is capable of rotating in the circumferentialdirection, and three machining stations are arranged on the circumference of the machining forming platform; the light path selecting system comprises a shock peening independent laser light path, anadditive independent laser light path and a subtractive independent laser light path which correspond to the three machining stations respectively, and all the independent laser light paths do not share equipment. The device fuses with the laser shock peening technology and the laser additive and subtractive technology, the forming precision, the surface quality, the structure performance and theresidual stress state of a complex fine additive workpiece are improved, and one-stop high-efficiency, high-precision and high-performance additive workpiece preparation is achieved.
Description
technical field [0001] The invention belongs to the technical field of laser processing, and relates to a device for composite manufacturing based on laser shock strengthening and laser addition and subtraction. Background technique [0002] Selective Laser Melting (SLM) is a laser additive manufacturing technology that manufactures solid parts based on the material discrete-gradual accumulation method. Specifically, it uses a high-power laser as a heat source to melt metal powder layer by layer. Parts with complex and fine structures (high processing precision), this technology can realize rapid, moldless near-net molding of dense materials with complex structures, and provide new ideas for the integrated preparation of complex and fine structure parts, especially for aerospace The molding of key precision parts in the fields of medical equipment, precision machine tools, and electronic communications provides a simple, fast, low-cost, and green flexible manufacturing techn...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23K26/064B23K26/70B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00B23K26/064B23K26/702
Inventor 高双何博兰亮谭志俊张奇
Owner SHANGHAI UNIV OF ENG SCI