Surface roughness reduction method of light-cured rapid prototype based on atomization technology

Abstract

The invention discloses an atomization technology-based light-cured rapid prototyping product surface roughness reducing method. The method adopting a liquid wax emulsion as a raw material comprises the following steps: heating the material, and atomizing to form uniform atomization environment in an atomization box; placing a light-cured rapid prototyping product in the atomization box, and uniformly coating the internal and external cavity surfaces of the light-cured rapid prototyping product with the atomized wax emulsion for a certain time, taking out he light-cured rapid prototyping product, heating the light-cured rapid prototyping product in an oven, and drying to remove water in the emulsion to form an extremely thin coating on the internal and external cavity surfaces of the light-cured rapid prototyping product. The coating can eliminate a step effect generated through a light curing rapid molding technology and reduce the surface roughness of the light-cured rapid prototyping product. The method is simple to operate, is especially suitable for the surface quality improvement of the light-cured rapid prototyping product with a complex internal and external cavity structure, does not affect the dimensional accuracy of the light-cured rapid prototyping product, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of light-curing rapid prototyping, and relates to a method for processing the surface roughness of a prototype, in particular to a method for reducing the surface roughness of a light-curing rapid prototype based on atomization technology. Background technique [0002] Rapid prototyping technology is an advanced manufacturing method based on the principle of material accumulation. Its appearance provides a new means for the manufacture of complex parts, which can shorten the product design cycle, speed up the development of new products, and reduce manufacturing costs. Among them, the light-curing rapid prototyping technology is the most widely used and the highest precision method in the current rapid prototyping technology. Due to the limitation of technical principles, there is a step effect on the surface of the prototype after molding, which causes the distortion of precision. This technical bottleneck ...

AI Technical Summary

Problems solved by technology

The resin coating method uses thermosetting resin as the raw material to coat the surface of the light-curing rapid prototype. This method has high requirements on the viscosity and leveling of the resin, and the operation process is complicated. The coating effect is affected by the shape of the prototype and the placement angle. Great impact; at the same time, this method can only deal with the outer surface of simple prototypes. For prototypes with complex inner cavity structures, the coating effect is poor, and resin interception is prone to occur, which greatly reduces the accuracy of prototypes.

For light-cured rapid prototypes used in the field of rapid precision casting, the thermosetting resin coating increases the thermal stress of the mold during pre-firing and degreasing, which can easily cause mold cracking

Surface polishing post-processing methods include grinding method and abrasive flow method, etc. The disadvantages are that machining allowance needs to be reserved during molding, which wastes materials, has high requirements for the processor's technology, and is difficult to process complex inner cavities.

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