Planning method of typical path for 3D printing of continuous fiber reinforced composites

Abstract

The invention discloses a typical path planning method for 3D (three-dimensional) printing of continuous fiber reinforced composites and belongs to the field of rapid prototyping of the composites. Inthe method, a three-dimensional model is built by using CAD (computer aided design) modeling software according to actual size requirements of forming components and is subjected to slice stratification by the aid of the three-dimensional software to acquire profile and slice information; the degree of path bending is judged and corresponding path planning mechanisms are started, and with the help of the jump point processing mechanism, jump points can be accurately located and the action of the jump points is completed; fiber interlayer conversion without breakpoint is realized by using an interlayer path planning mechanism, and high quality and high efficiency three-dimensional printing new path of the continuous fiber reinforced composites is realized. In the method, the printing pathwith the least breakpoints is planned out, and mechanical property of the continuous fiber reinforced composites is guaranteed; forming defects in the bending of continuous fiber are effectively reduced, binding force of the continuous fiber in the bending is improved, and integral performance of the forming components is improved.

Description

technical field [0001] The invention belongs to the field of rapid prototyping of composite materials, and relates to a planning method for a typical path of 3D printing of continuous fiber reinforced composite materials. Background technique [0002] Fiber-reinforced composite materials have the advantages of light weight, high strength, and can be designed and manufactured as a whole, and have now become the material of choice for key components in high-end equipment fields such as aviation and aerospace. However, as the functional and high-performance requirements of key components in high-end equipment continue to increase, the structural design of components becomes more and more complex. The traditional lay-up and solidification manufacturing process cannot meet the shape requirements of complex components, which seriously affects the fiber composite materials. Application in complex structural parts of high-end equipment. [0003] 3D printing technology applies the i...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the prior art. For the path planning of continuous fiber 3D printing, there are still problems such as weak fiber bonding force at bends, easy fiber breakage at small-angle bends, and many path breakpoints. Causes the formation of defects in continuous fiber composite molding components, severely restricts the performance of molding components, and even leads to printing failures of molding components

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