Uniform liquid drop injecting three-dimensional fast shaping method and apparatus thereof

Abstract

The invention belongs to the technical field of rapid prototyping, in particular to a rapid prototyping method and device for metal parts. In the present invention, inert gas is injected into the crucible and the vacuum-sealed chamber, and the pressure control system is used to make the crucible and the vacuum-sealed chamber reach a stable pressure difference, so that the metal melt is sprayed from the micro-nozzle at the bottom of the crucible in the form of a laminar jet. The vibration generated by the piezoelectric oscillator is used to disturb the metal jet, so that the metal jet breaks into uniform droplets, and the real-time size parameters of the generated droplets are obtained through the monitoring system combined with the computer analysis system. The microcomputer control system is based on the pre-input part size Parameters and related parameters of the droplets, real-time control of the electric field parameters of the deflection plate, so as to control the flight trajectory of the metal droplets and cooperate with the three-dimensional adjustment table to deposit and prepare high-quality metal parts. The invention can directly prepare near-network metal parts with rapid solidification structure characteristics and compact structure from liquid metal, has short process flow, good product quality, and greatly reduces equipment investment.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, in particular to a rapid prototyping method and device for metal parts. Background technique [0002] Rapid prototyping technology uses the principle of material accumulation molding to build up materials layer by layer or point by point to manufacture parts. Due to the non-uniform metal droplets produced by the traditional atomization spray molding technology, the final molded parts have poor density, high porosity and unsatisfactory product quality. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention proposes a device capable of directly generating uniform metal droplets from liquid metal, and then rapidly preparing metal parts. [0004] For this reason, the present invention adopts following technical scheme: [0005] A three-dimensional rapid prototyping device for uniform droplet ejection, comprising a...

AI Technical Summary

Problems solved by technology

Due to the unevenness of the metal droplets produced by the traditional atomization spray molding technology, the final molded parts have poor density, high porosity, and unsatisfactory product quality.

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