An Experimental Method to Study the Removal Mechanism of Machining Carbon Fiber Composites
An experimental method and technology of composite materials, applied in the field of micro-morphological changes in single-bundle fiber cutting under the action of support, to achieve the effects of convenient installation and positioning, high experimental efficiency, and simple experimental equipment
Active Publication Date: 2018-10-16
DALIAN UNIV OF TECH
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Problems solved by technology
[0004] In order to solve the problem that the mechanism of material removal cannot be microscopically observed in the process of cutting carbon fiber composite materials, the present invention invents an experimental method for studying the removal mechanism of processed carbon fiber composite materials. This invention simplifies complex carbon fiber composite materials and adopts carbon fiber Prepregs and resins are solidified to form samples for experiments. The workbench is used as the basic component, and linear motor devices, samples, grinding devices, and observation devices are installed on it. By micron-scale micro-cutting of strip prepregs, Observing the cutting process with a microscopic camera, and revealing the removal mechanism of carbon fiber composites by measuring its cutting force
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[0031] The specific implementation of the present invention will be described in detail below in conjunction with the technical scheme and accompanying drawings.
[0032] The specific steps of the experimental method are as follows:
[0033] The first step is to prepare the sample 10
[0034] The manufacturing process is as follows: Firstly, the cutting experimental sample for curing carbon fiber prepreg is made. figure 2 Shown mold, it comprises mold frame 17 and mold bottom plate 18, is bonded by sealant; The length of mold frame is 106mm, and width is 46mm, and wall thickness is 3mm, and the short side both sides of mold frame 17 respectively has four widths of 0.2mm narrow slits, the distance between every two narrow slits on the same side is 10mm, the width of the narrow slits is the same as the thickness of the carbon fiber prepreg, and every two narrow slits on both sides of the mold frame 17 are on the same straight line.
[0035] The carbon fiber prepreg is cut int...
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The invention belongs to the field of micro-removal and provides an experimental method for researching a removal mechanism in processing carbon fiber composites. The experiment method includes: firstly producing a sample piece and cutting-blade roundness conform to requirements; fixing a cutter on a three-component dynamometer, wherein different blades of the cutter have different roundness radii, and change of the radius of the cutting-blade roundness during the cutting process is realized; fixing the sample piece on a micro-grade feed mechanism to realize change of cutting depth during cutting; through working speed of a linear motor, realizing cutting of different cutting speed, observing fiber morphology changes with a microscopic camera during cutting and measuring cutting force with the three-component dynamometer. The experimental method is simple, high in reliability and convenient in installation and positioning; the fiber morphology changes and measurement of the force are integrated during observation of the cutting process, and high efficiency is achieved.
Description
technical field [0001] The invention belongs to the field of micro-cutting, and relates to an experimental method for changing the micro-morphology of single-bundle fiber cutting under the supporting action in the processing of carbon fiber composite materials. Background technique [0002] Due to the advantages of high strength, high stiffness and fatigue resistance of carbon fiber composite materials, carbon fiber composite materials are very popular in aerospace, transportation and other industrial fields. Although composite parts such as carbon fiber composite materials are mostly manufactured by direct molding, in order to meet the size and assembly requirements and obtain better surface quality, milling, grinding, drilling and other methods are also required for processing. In the process of processing, the inhomogeneity and anisotropy of carbon fiber composite materials make processing very difficult, and there will be processing defects such as burrs, fiber pull-out,...
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IPC IPC(8): G01N3/58G01N3/06
CPCG01N3/068G01N3/58G01N2203/005G01N2203/0075
Inventor 牛斌张其存宿友亮温雯杨睿孙士勇
Owner DALIAN UNIV OF TECH