Directly and fast forming method and device for polymetal based on welding amassed

Abstract

The present invention is direct fast polymetallic forming method and apparatus based on welding stackup. The method includes material stackup of arc welding source molten metal wire material, high speed milling head machining of laminated plane and contour to ensure precision the machined part, and digitally controlled program control of 3D working bench to obtain required geometric characteristic of the part. During the formation, the filament feeding direction is adaptively regulated and embedded medium is used to improve temperature field so as to raise the formation quality. The present invention has the features of low cost and compact structure of the formed part, and high efficiency, and can realize the fast formation of the metal part with functional gradient.

Description

1. Technical field [0001] The invention belongs to the field of manufacturing technology, in particular to a multi-metal direct rapid prototyping method and device based on welding accumulation. 2. Background technology [0002] Rapid prototyping (RP) is a brand-new manufacturing technology. It adopts the principle of material additive forming, without tools, tooling and complicated process preparations. It can quickly produce three-dimensional entities with certain functions from the three-dimensional CAD physical model, and truly realize the The outstanding advantage of the integration of CAD / CAPP / CAM is that it is not limited by the complexity of the parts. The more complex the parts, the more obvious the technical advantages. Currently commonly used rapid prototyping methods are: Stereolithography, layered solid manufacturing (LOM), fused deposition method (FDM), three-dimensional printing (3D-Print) and selected laser sintering (SLS). The first three methods generally ...

AI Technical Summary

Problems solved by technology

The first three methods generally use photosensitive resin, paper and wax as forming materials, and cannot directly make metal parts; while the selective laser sintering method (SLS method) can make metal parts, but due to the binder or low melting point metal powder will be high Melting point metal powder is bonded and formed, and then the process method of burning, the obtained parts are not ideal in structure and mechanical properties; and the method of directly sintering metal powder materials with high-power lasers can obtain good mechanical properties. Parts, however, expensive equipment costs and operating costs make it difficult to apply in actual production

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