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Melting and depositing technique and process for making prototypo covering mold quickly

A fused deposition manufacturing and prototyping technology, applied in the field of fused deposition manufacturing rapid prototyping overmold technology and process, which can solve the problems that the prototype cannot be directly ground and polished, the cost is high, and the process time is long.

Inactive Publication Date: 2004-04-07
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such a process takes a long time and costs high
The material used in FDM is ABS engineering plastics. Although the prototype produced has good strength, the surface finish is the worst. In addition, due to the "anisotropy" of the matrix material caused by filamentous accumulation, the prototype can hardly be used. Direct grinding and polishing

Method used

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Examples

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Embodiment Construction

[0019] Below in conjunction with the multiple model processing process of a car side light light distribution mirror sample, the specific implementation process of the present invention is further described:

[0020] 1. Using fused deposition manufacturing (FDM) technology under the direct drive of CAD data, ABS engineering plastics are used to make rapid prototypes of car side light distribution mirrors.

[0021] 2. Carry out chloroform enhancement treatment to the matrix of the FDM prototype. Coat a layer of chloroform (also known as chloroform) on the bottom surface of the FDM prototype. Since chloroform has a melting effect on the ABS material, the coating should be as uniform as possible, and there should be no deposition on the surface. After coating, use a round tool with a diameter of about 5mm to compact the loose part of the wire. On the one hand, this kind of treatment makes the defective part and the body tightly combined, so as not to affect the subsequent proces...

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Abstract

Based on the features of fusion and deposition manufacture (FDM) fast prototype and practical engineering requirement, the present invention proposes one kind of fast mold making technique and process based directly on FDM fast prototype. The prototype is first made via FDM fast forming process and then reinforced by means of chemical and physical processing. After that, the prototype is painted with F23 resin, polished and sprayed to make the FDM prototype obtain high surface smoothness and maintain original strength so as to meet the requirement for making high quality product sample with silica gel mold. The prenent invention makes it possible to fasten the sample manufacture in developing product and has important engineering value and obvious economic utility.

Description

Technical field: [0001] The present invention relates to a technology and technique for overlaying rapid prototypes of fused deposition manufacturing (Fuse Deposition Modeling, hereinafter referred to as FDM), in particular to a rapid prototype directly based on FDM, using chemical and physical processing methods to keep FDM prototypes Original strength, while achieving a high surface finish, a rapid molding method and process that meets the needs of making high-quality product samples with silicone molds, belongs to mechanical manufacturing [0002] technology field. Background technique: [0003] Due to the increasingly fierce competition in the global market, the speed of product replacement is getting faster and faster, and the speed of new product development has become an important factor in determining the fate of an enterprise. As an important enabling technology to speed up product development, rapid prototyping and rapid tooling have been widely valued and widely ...

Claims

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Application Information

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IPC IPC(8): B29C33/40
Inventor 严隽琪习俊通张鸿梁
Owner SHANGHAI JIAO TONG UNIV
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