Dual-beam laser selective melting and moulding equipment with exchangeable powder cylinder

Abstract

The invention discloses dual-beam laser selective melting and moulding equipment with an exchangeable powder cylinder. The equipment comprises two optical systems, a frame, a workbench plate, a powder feeding cylinder, a powder storage cylinder, a moulding cylinder, a powder returning cylinder, a moulding cavity, and two first driving mechanisms, which are used to respectively drive the moulding cylinder and powder feeding cylinder to move up and down. The workbench plate is fixed on the frame, the moulding cavity is fixed on the upper surface of the workbench plate, and the powder returning cylinder, the moulding cylinder, the powder feeding cylinder, and powder storage cylinder are fixed on the lower surface of the workbench plate from left to right in sequence. A scraper is arranged in the moulding cavity, and a second driving mechanism is arranged on the frame. A substrate is arranged in the powder feeding cylinder, a substrate is arranged in the moulding cylinder, the lower ends of the powder feeding cylinder and the moulding cylinder are both provided with a cylinder end cover, and the substrates are connected to a first piston system. A second piston system is arranged in the powder storage cylinder. The provided equipment has a high moulding efficiency and is capable of effectively reducing the deformation and cracking of members.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a replaceable powder tank double-beam laser selective melting forming equipment. Background technique [0002] Additive manufacturing technology (also known as "3D printing") is a high-end digital rapid manufacturing technology that has developed rapidly in recent years. It is suitable for the near-net shape of complex components. The formed parts manufactured by additive manufacturing technology have excellent mechanical properties. , suitable for rapid prototyping of various materials, and the material utilization rate is high. Selective Laser Melting (SLM) technology is a typical representative of additive manufacturing. It transforms the traditional three-dimensional manufacturing process into a planar manufacturing-cumulative superposition process, and realizes the manufacture of three-dimensional complex precision parts through layer-by-layer melting of powder....

AI Technical Summary

Problems solved by technology

[0005] The patent "Preheating Device and Preheating Method for Powder Feeding Cylinder of Selective Laser Melting SLM Equipment", application number "201310024599.8", proposes a direction of using metal induction coils to preheat the powder cylinder, but the induced current generated by this method is in the The distribution on the formed part is uneven, strong on the surface, but weak inside, affecting the forming quality

Most of the existing laser selective forming equipment adopts the method of heating the piston to preheat the powder indirectly, and it is difficult to guarantee the uniformity of powder preheating and forming efficiency

Images