Continuous SLM equipment

Abstract

The invention discloses continuous SLM (Selective Laser Melting) equipment which comprises a control system, a vibrating mirror scanning system and a forming system, wherein the forming system comprises a forming platform, a forming baseplate arranged on the forming platform and a baseplate driving mechanism for driving the forming baseplate to move in the vertical direction; the vibrating mirror scanning system and the baseplate driving mechanism are connected with the control system respectively; the forming system further comprises a platform driving mechanism for driving the forming platform to move in the horizontal direction; and the platform driving mechanism is connected with the control system. According to the continuous SLM equipment, since the platform driving mechanism is additionally arranged and the forming platform can move in the horizontal direction, the flat area of a forming region is effectively enlarged under the condition that the vibrating mirror scanning system is not additionally arranged, the forming requirements of large-sized parts can be met, the continuity of laser processing is realized, defects caused by splicing seams are avoided, the structural strength of a forming piece is enhanced, the utilization rate and forming efficiency of a laser are improved, and the manufacturing cycle of the parts is shortened.

Description

technical field [0001] The invention relates to the technical field of metal powder laser melting forming, in particular to a continuous SLM equipment. Background technique [0002] Selective Laser Melting (Selective Laser Melting, SLM) is a method of direct forming of metal parts. It is the latest development of rapid prototyping technology. According to the three-dimensional CAD model, the parts with specific geometric shapes are directly formed. During the forming process, the metal powder is completely melted, resulting in metallurgical bonding; selective laser melting equipment has attracted widespread attention because it can form metal parts with complex structures and can be used directly. And it is predicted as one of the key technologies that may trigger the "third industrial revolution"; compared with traditional subtractive manufacturing methods, SLM technology can directly form metal parts with complex features and thin walls, which has the ability to reduce mat...

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Problems solved by technology

[0002] Selective Laser Melting (SLM) is a method of direct forming of metal parts and the latest development of rapid prototyping technology. This technology is based on the most basic idea of ​​rapid prototyping, that is, the "incremental" manufacturing method of layer-by-layer cladding According to the three-dimensional CAD model, the parts with specific geometric shapes are directly formed. During the forming process, the metal powder is completely melted to produce metallurgical bonding; selective laser melting equipment has attracted extensive attention because it can form metal parts with complex structures and can be used directly. And it is predicted as one of the key technologies that may trigger the "third industrial revolution"; compared with traditional subtractive manufacturing methods, SLM technology can directly form metal parts with complex features and thin walls, which has the ability to reduce material waste , Complicated parts processing does not increase costs, does not need to open molds, shortens product cycle and other advantages; in recent years, with the rapid economic development and the new needs of manufacturing industry upgrading, more and more SLM products are applied to aerospace, equipment manufacturing Medical and other industries have also put forward new requirements for SLM technology; however, the traditional galvanometer-type SLM equipment parts are too small to meet the manufacturing needs of large parts. If the number of laser galvanometers is increased to achieve splicing, on the one hand more The movement of the station reduces the production efficiency and increases the complexity of the equipment. On the other hand, the expensive optical components will undoubtedly increase the manufacturing cost of the equipment.

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