Selective laser sintering forming equipment, system and method for large and complex parts

Abstract

Belonging to the field of additive manufacturing, the invention discloses selective laser sintering (SLS) forming equipment, a system and a method for large and complex parts. The system adopts a guide rail to integrate the selective laser sintering forming equipment, powder cleaning equipment and postcuring-carbonization equipment, after a forming mechanism completes selective laser sintering forming of a slice layer on a forming platform, a vertical driving mechanism rises a height of one slice layer, under the circumstance of a constant forming platform height, layer-by-layer machining of to-be-formed parts can be realized through layer-by-layer rising of the forming mechanism's height, and a horizontal driving mechanism is used for separating the forming mechanism or equipment thereabove from the forming platform. The complete set of equipment adopts a fixed forming platform, completes the whole set of manufacturing process without moving the formed parts, solves the problems of small size and low rate of finished products in manufacturing of complex parts in the prior art, realizes the immobility of formed parts in SLS forming, avoids the collapse, bending and deformation of parts due to moving, and then can be used for manufacturing of large parts.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and more specifically relates to a laser selective sintering forming equipment, system and method for forming a large complex part. Background technique [0002] Additive manufacturing technology, commonly known as 3D printing, is a manufacturing technology that uses the principle of layered manufacturing and superposition to directly manufacture three-dimensional solid parts from CAD models, and is at the forefront of research in the field of advanced manufacturing. Different from the traditional processing methods such as subtractive processing (cutting processing) and equal material manufacturing (casting, forging), it uses the material accumulation method to process and manufacture parts of polymer materials, ceramics, metals and various composite materials. The biggest advantage is that it can form arbitrary complex structural parts, and can realize the one-time integral forming of part...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a laser selective sintering forming equipment, system and method for forming a large and complex part. By using the forming table to move and the SLS forming mechanism to move up and down, the slicing layer is sliced ​​layer by layer The processing method is used to process large parts to avoid the collapse, bending and deformation of part of the structure caused by the up and down movement of the parts during the processing of large parts, as well as the damage during the handling of large parts from one station to the next, so as to solve the current situation. There is a technical problem that SLS equipment cannot be used to process complex parts with large dimensions

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