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Preparing method for interlayer compounding gradient-controllable complex part and special device

A technology of complex parts and special equipment, applied in metal processing equipment, additive manufacturing, manufacturing tools, etc., can solve the problems of undeveloped multi-material composite molding process and special equipment, single performance, and limited functions, so as to achieve easy promotion and Effects with many applications and types and strong compatibility

Inactive Publication Date: 2017-07-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the light-curing rapid prototyping method is mainly applied to the photosensitive resin of a single material, which has single performance and limited functions, and has not effectively utilized the compatibility of the additive manufacturing process for multi-material molding and the high precision of light-curing molding.
[0003] Light-curing rapid prototyping of ceramic materials is a new process for forming complex ceramic parts in the past two years. It has the characteristics of high precision, fast speed, high material compatibility, and the ability to form large-sized ceramic parts. At present, it is mainly aimed at the production of a single material. Molding, the molding process and special equipment for multi-material composites have not yet been developed

Method used

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  • Preparing method for interlayer compounding gradient-controllable complex part and special device
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  • Preparing method for interlayer compounding gradient-controllable complex part and special device

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preparation example Construction

[0040] Figure 5 The process block diagram of the preparation method provided by the present invention, the method specifically includes the following steps:

[0041]1) Use 3D modeling software to generate a 3D solid model of the part in the control unit, convert the data into an STL file, and design the thickness of each layer of the printed model, and use layering software to divide it into multiple thin layers. Each layer in the layer corresponds to a corresponding material, and the layer thickness is set according to the corresponding material properties, and the layer thickness is preferably 10-200 μm;

[0042] 2) Place the prepared different light-curing materials in each material box, and the control unit selects and sets the material used for each thin layer; the light-curing material is pure photosensitive resin, fiber or whisker added Photosensitive resin, photosensitive resin with nano filler added, photosensitive ceramic paste or photosensitive metal paste;

[00...

Embodiment

[0047] Embodiment: use three-dimensional modeling software to generate parts in computer ( Figure 7 ), the 3D modeling software can choose Pro / E or Solidworks, and convert the data into STL files; use layering software to layer it, and the thickness of the layers can be 10-500 μm to obtain the shape of each layer structure. Input the material box number corresponding to the material to be called into the computer. Such as Figure 6 As shown, the material boxes 7 are numbered a, b, and c from left to right. The material box a is pure photosensitive resin, the material box b is photosensitive resin with glass fiber added, and c is photosensitive resin with nano filler added. The thicknesses of slices corresponding to the materials were 100 μm, 50 μm and 80 μm, respectively. Firstly, the material box a is called to control its movement from one side of the film 4 to the other side to spread the material, and a layer of 200 μm pure photosensitive resin coating 14 is formed on t...

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Abstract

The invention discloses a preparing method for an interlayer compounding gradient-controllable complex part and a special device and belongs to the technical field of compounding forming of multiple materials. The device comprises a material spreading system, a photo-curing forming system and a control unit. The method includes the steps that firstly, a three-dimensional solid model of a part is sliced and layered through layering software; then the multi-material-box material spreading system is controlled to achieve spreading of single-layer slurry according to a set program; then single-layer curing forming of the slurry on a forming table is achieved through vertical moving of a forming table and illumination of a light source; afterwards, the forming table is lifted so that a curing layer can be separated from a film; and the above operation is repeated to achieve layers of stacking, and finally, interlayer compounding of various photo-curing materials is completed. By means of the preparing method and the special device, a film conveying belt and the multi-material-box material spreading system are adopted, the kinds and numbers of applied photosensitive materials are not limited, and continuous printing of multiple layers and interlayer compounding of various materials can be achieved; the selection kinds of films are multiple, and the cost is low; and the material spreading system is simple in structure, modular production can be achieved, and application and popularization are facilitated.

Description

technical field [0001] The invention relates to a preparation method and special equipment for an interlayer composite controllable gradient complex part, belonging to the technical field of multi-material composite molding. Background technique [0002] Light-curing rapid prototyping technology is one of the methods with the highest molding precision in additive manufacturing technology. The light-curing rapid prototyping technology uses photosensitive resin as a raw material, and the material changes from liquid to solid under the irradiation of a light source with a corresponding wavelength. Combined with rapid prototyping hardware and software, parts are formed. The method has high precision and strong process flexibility. At present, the light-curing rapid prototyping method is mainly applied to the photosensitive resin of a single material, which has single performance and limited functions, and has not effectively utilized the compatibility of the additive manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/20B29C64/124B29C64/129B29C64/255B29C64/321B29C64/393B28B1/00B22F3/10B22F3/105B33Y10/00B33Y30/00B33Y40/00B33Y50/02
CPCB22F3/10B22F3/105B28B1/001B33Y10/00B33Y30/00B33Y40/00B33Y50/02Y02P10/25
Inventor 吕志刚胡可辉魏亚蒙邹谷阳
Owner TSINGHUA UNIV
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