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3D printing method and system for complicated parts based on curved surface layering

A complex parts, 3D printing technology, applied in 3D modeling, image data processing, manufacturing auxiliary devices, etc., can solve the problems of smooth and weak connections on the surface of printed parts, and achieve the effects of reducing processing materials, increasing bearing capacity, and improving efficiency

Inactive Publication Date: 2017-09-22
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the contour fitting error in the 2D plane and the stacking error in the Z-axis direction still exist
The existing multi-degree-of-freedom printing equipment relies on the existing 2D slicing method and the filling strategy in the 2D plane, and does not really use the 3D slicing method to achieve smooth surface of the printed part, free surface curve gradient and adjustment of layers. weak link between

Method used

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  • 3D printing method and system for complicated parts based on curved surface layering
  • 3D printing method and system for complicated parts based on curved surface layering
  • 3D printing method and system for complicated parts based on curved surface layering

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Embodiment 1

[0033] Such as Figure 1~3 As shown, the complex part of this embodiment is a six-dimensional force sensor, which specifically includes the following steps:

[0034] Step 1. Use three-dimensional modeling software to draw a three-dimensional model of the elastic body of the six-dimensional force sensor according to the structure and surface characteristics of the six-dimensional force sensor.

[0035] The six-dimensional force sensor is based on the Stewart parallel mechanism, including the upper platform 5, the lower platform 1, the flexible hinges 2, 4, and the flexible beam 3 of the six-dimensional force sensor. Among them, the flexible hinges 2, 4 are six-dimensional force sensors. The key structural part of the sensor.

[0036] The 3D modeling software includes, but is not limited to: Solidworks, ProE or Catia.

[0037] Step 2. Perform lightweight topology optimization design on the 3D model obtained in step 1, such as Image 6 Shown.

[0038] The basis of the structural lightwei...

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Abstract

The invention discloses a 3D printing method and system for complicated parts based on curved surface layering. According to structures and the characteristics of curved surfaces of the complicated parts , a three-dimensional model is built, and lightweight structural topology optimization design and spatial 3D slicing and layering are carried out, so that control data for 3D printing can be generated; layer-by-layer 3D printing is carried out after printing parameters are set according to the control data so as to obtain 3D printing parts of the complicated parts, wherein the spatial 3D slicing and layering mean that the curved surface layering is carried out by choosing a curved surface layering method according to the structure characteristics of the three-dimensional mode of the complicated parts, the layered spatial 3D layering data is processed and a filling strategy is selected for printing of paths and planning of tracks. Compared with an existing CNC processing technology, the method and the system disclosed by the invention have the advantages that realization of continuous fiber reinforced manufacturing is facilitated, surface forming precision of the complicated parts is effectively improved, and the printing support is reduced.

Description

Technical field [0001] The invention relates to a technology in the field of 3D printing of complex parts, in particular to a method and system for 3D printing of complex parts based on surface layering. Background technique [0002] For the 3D printing of complex parts, the existing layering methods are all 2D layering, that is, layered slicing is performed based on the same layer thickness, variable layer thickness, and multi-directional method. Single-direction printing cannot solve the support problem; the variable layer thickness slicing method improves the printing accuracy by reducing the slice layer thickness when there is a curved surface in the vertical direction; while multi-direction slicing will bring huge problems for complex parts. Preliminary slice processing cost. Filling methods mainly include Raster, Zigzag, Contour, Hybrid, Continuous, medial axis transformation, etc., through different filling methods in the 2D plane, taking into account the filling efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/386B29C64/393B33Y50/00B33Y50/02G06T17/00
CPCB33Y50/00B33Y50/02G06T17/00
Inventor 赵冬华郭为忠
Owner SHANGHAI JIAO TONG UNIV
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