Support-free 3D (Three Dimensional) suspended printing structure and support-free 3D suspended printing method

Abstract

The invention discloses a support-free 3D (Three Dimensional) suspended printing structure and a support-free 3D suspended printing method. The support-free 3D suspended printing method is characterized in that an ultrasonic suspension method is adopted; parts are putted into a sound field in the 3D printing process of the parts; a suspended or floating part is supported under the action of ultrasonic radiation force; the printing of materials of initial several layers is enabled to be finished so as to support subsequent printing, and further 3D printing of the parts is finished under the support-free condition. According to the support-free 3D suspended printing structure and the support-free 3D suspended printing method disclosed by the invention, on the one hand, the cost of supportingmaterials is greatly reduced and the manufacturing efficiency is greatly improved; on the other hand, the influence on product quality, which is possibly caused by unfavorable support, is eliminated.In particular to thin shell parts, certain supporting materials even account for 60 percent or above of the use amount of the integral material; if the parts are printed under the support-free condition, the cost is predicted to be reduced by 50 percent or above, and the manufacturing cycle is shortened by 40 percent or above; in addition, the worry about quality problem caused by support removalis avoided.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to an unsupported 3D suspension printing structure and method. Background technique [0002] The principle of 3D printing technology requires the upper structure of the model to be supported by the lower part. Therefore, if some parts of the printed model are suspended or floating, the support structure needs to be designed during printing. When the fused deposition method (FDM) is used for printing, its working principle is to heat the material to a semi-fluid state, and extrude it on the printing plate in a layer-by-layer stacking manner. Although it solidifies quickly, it is affected by gravity during the printing process Influence, when the angle α between a certain surface of the model and the vertical line is greater than 45° and suspended in the air, the material will fall before solidification. This is the 45° angle principle in 3D printing, that is, if α is ...

AI Technical Summary

Problems solved by technology

[0005] The existence of 3D printing support, on the one hand, increases the cost and reduces the manufacturing efficiency, on the other hand, it may cause support removal to adversely affect product quality

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