Magnetorheological-material-based 3D (Three-Dimensional) printing type rapid prototyping device and method

Abstract

The invention relates to a magnetorheological-material-based 3D (Three-Dimensional) printing type rapid prototyping method and device. According to the principle of magnetorheological effect, a magnetorheological material is used as a 3D printing raw material; and a 3D solid model is constructed by spraying the magnetorheological material on a workbench with a magnetic field, rapidly solidifying and prototyping the sprayed magnetorheological material, and then depositing the treated material layer by layer. A computer is provided with three control circuits; one circuit is used for controlling the flow of a driving pump, namely the flow at a spray head; another circuit is used for controlling the 3D motion of the spray head through a servo mechanism; and the rest circuit is used for controlling colour mixing and allocating of a colourized ink box. The magnetorheological material is solidified and prototyped by utilizing the magnetic field generated by an electromagnet. According to the magnetorheological effect of the magnetorheological material, a temperature control module in the traditional melting, spraying and rapid prototyping type 3D printing method is replaced by the magnetic field; in addition, the device disclosed by the invention is also different from a high-pressure electric field required by an electrorheological fluid effect, has the advantages of being simple in structure, low in energy consumption and cost, capable of realizing the microminiaturization and the like, and can be applicable to the fields of process design, art and entertainment, prosthesis model and the like.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing, and particularly relates to a 3D printing rapid prototyping method and device based on magnetorheological materials, in particular to a magnetorheological effect under the action of a magnetic field, which is deposited by spraying magnetorheological fluid to the presence of a magnetic field A method and device for rapidly solidifying on a substrate, forming layer by layer, and finally forming a 3D printed three-dimensional model. Background technique [0002] 3D printing technology is a general term for a series of rapid prototyping technologies. Its basic principle is laminated manufacturing. The rapid prototyping machine forms the cross-sectional shape of the workpiece through scanning in the X-Y plane, and the displacement of the layer thickness is intermittently performed at the Z coordinate. Finally, a three-dimensional solid is formed. Rapid Prototyping and Manufacturing (RP&M) refers...

AI Technical Summary

Problems solved by technology

However, this rapid prototyping process has the following disadvantages: a) It requires a complex temperature control system

b) The energy consumption required to achieve liquid-solid phase conversion through temperature is high, and at the same time, problems such as phase change shrinkage and deformation are prone to occur

c) During the rapid prototyping process, the processed materials will emit irritating, unpleasant or even toxic gases into the air due to heating or changes in the internal structure, causing environmental pollution and even affecting the health of operators

d) Due to the limitation of the rapid prototyping process, the types of materials for rapid prototyping are limited, and the production cost is high.

However, the Chinese patent (CN 102615830) "A Rapid Prototyping Method and Device Based on Electrorheological Fluid" proposes rapid prototyping of electrorheological fluid in an electric field, which requires a high-voltage electric field of thousands of volts, which brings danger to operators.

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