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Lightweight active support structure of suspended circular-section flow passage

A support structure and circular section technology, applied in the field of additive manufacturing, can solve the problems of damage to the powder coating structure, failure of the manufacturing process, uneven powder coating, etc., and achieve the effects of increasing stability, shortening the manufacturing cycle, and reducing manufacturing costs

Inactive Publication Date: 2019-11-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The support is usually long and thin, and thermal warpage is prone to occur when the temperature gradient is too large, which will damage the powder coating structure, resulting in uneven powder coating, which will cause the failure of the manufacturing process

Method used

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  • Lightweight active support structure of suspended circular-section flow passage
  • Lightweight active support structure of suspended circular-section flow passage
  • Lightweight active support structure of suspended circular-section flow passage

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Experimental program
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Embodiment Construction

[0020] The foregoing and other technical contents, features and effects of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] figure 1 Shown is the support structure generated by the preprocessing software in the SLM additive manufacturing process. The dangerous surface during the construction process, that is, the tangent angle of the semi-circular arc under the circular cross-section runner is less than 45°, which is all uniformly added. 状Support. The automatically generated block support is composed of uniform and dense linear supports inside. The linear support inside the block support is usually long and thin. When the temperature gradient is too large, it is prone to thermal warpage, which damages the powder spreading system and causes uneven powder spreading, which makes the manufacturing process fail. At the same time, the block support has a large volume, which increases the use of raw materials in the manufactur...

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Abstract

The invention discloses a lightweight active support structure of a suspended circular-section flow passage. The structure comprises a convoluted rhombic active support structure and a stretching poreplate active support structure, the suspended circular-section flow passage is supported on the convoluted rhombic active support structure, and the stretching pore plate active support structure isfixed under the convoluted rhombic active support structure; the stretching pore plate active supporting structure is connected to an installation surface obtained by additive manufacturing, and the forming direction of the suspended circular-section flow passage is perpendicular to the installation surface; and the suspended circular-section flow passage is manufactured and formed by an SLM rapidprototyping technique. The lightweight active support structure realizes one-time forming of the suspended circular-section flow passage in an SLM manufacturing process without post-processing to remove a support, and simultaneously increases the strength and stability of connection of all parts.

Description

Technical field [0001] The invention belongs to the field of additive manufacturing and is applied to the forming of a suspension hydraulic flow channel in the hydraulic field, and particularly relates to a lightweight active support structure of a suspension circular cross-section flow channel. Background technique [0002] Additive Manufacturing (AM) technology is 3D printing technology, which is different from the traditional "subtractive manufacturing" processing method that relies on the combination of multiple processes to manufacture parts such as turning, milling, and grinding. It is based on the principle of discrete-additive forming and uses CAD three-dimensional After the model is generated in the STL format file, it is imported into the relevant 3D printer software, and the computer is used to control the accumulation of printing materials layer by layer, and finally form a three-dimensional entity at a time. Selective laser melting technology (SLM) is a kind of addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F5/12B33Y30/00
CPCB22F5/106B33Y30/00B22F10/00B22F10/28B22F10/47Y02P10/25
Inventor 祝毅汪帅杨华勇
Owner ZHEJIANG UNIV
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