Method for preventing 3D printing model from warping in FDM (Fused Deposition Modeling) printing

A 3D printing and model technology, applied in 3D object support structure, additive manufacturing, processing data acquisition/processing, etc., can solve the problem that the printing parameters of printing equipment cannot be set accurately

Inactive Publication Date: 2019-12-06
SHAANXI QIANSHAN AVIONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing technology usually controls the quality of the printed parts by controlling the printing parameters of the pr

Method used

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  • Method for preventing 3D printing model from warping in FDM (Fused Deposition Modeling) printing
  • Method for preventing 3D printing model from warping in FDM (Fused Deposition Modeling) printing

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Embodiment Construction

[0022] In the FDM process, the filament in the molten state will pass through the viscous state, the high elastic state, and the glass state during the cooling process. The schematic diagram of the warping deformation of the printed part is shown in figure 1 As shown, picture (a) shows that the new accumulation layer has just been deposited on the printed part (hot bed platform); figure (b) shows the theoretical deformation of the new accumulation layer during cooling from the melting temperature to the glass transition temperature. In fact, this process is due to the In the thermoplastic stage, the new accumulation layer will be stretched by the external force of the lower part of the print, and will be elongated and deformed as shown in figure (c); figure (d) is the deformation of the accumulation layer from the glass transition temperature to the ambient temperature of the molding room. The generation of stress causes the workpiece to warp and deform upward.

[0023] Accord...

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Abstract

The invention belongs to the technical field of aerospace manufacturing, and discloses a method for preventing a 3D printing model from warping in FDM (Fused Deposition Modeling) printing. The methodcomprises the steps of (1) determining the bottom surface of the 3D printing model, wherein the bottom surface of the 3D printing model expresses the surface, which is printed first to make contact with a hot bed platform, in all surfaces of the 3D printing model; (2) uniformly applying anti-warping glue to the hot bed platform; (3) setting the temperature of the hot bed platform and printing parameters of a printer; and (4) printing the 3D printing model according to the printing parameters of the printer. The warping deformation of a 3D printed piece can be effectively solved, and the successful printing of a 3D product is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of aviation manufacturing, and in particular relates to a method for preventing warpage of a 3D printing model during FDM printing. Background technique [0002] 3D printing technology, as an emerging, infinitely developing and promising processing and manufacturing technology, can quickly and efficiently turn design blueprints on computers into real objects. 3D printing technology plays an important role in product pre-development. [0003] 3D printing technology is considered to be one of the core technologies of the third industrial revolution, among which FDM (Fused Deposition Modeling, Fused Deposition Modeling) technology is the fastest growing and most widely used technology in 3D printing technology. After the conduit is sent to the intelligently controlled nozzle, it is heated and melted and finally piled up and formed. Due to the influence of 3D printing equipment, 3D models, printing materials, ...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C64/30B29C64/393B33Y40/00B33Y50/02
CPCB33Y40/00B33Y50/02B29C64/118B29C64/30B29C64/393
Inventor 宁斌
Owner SHAANXI QIANSHAN AVIONICS
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