Carbon fiber bicycle frame production process

Abstract

The invention relates to a carbon fiber bicycle frame production process, which comprises the following steps that (1) each carbon fiber component module is built by a carbon fiber composite material, and comprises a front fork, a front frame triangle and a rear frame triangle; a gas bag is used as a skeleton of a top tube, a seat tube and a down tube, and a silica gel shell is used as a skeleton of a bottom bracket; a gas bag for the front fork is used as a skeleton of a stem, a crown, a fork blade and a dropout to be rolled, and left and right fork blades of the front fork are produced together when the crown is produced by rolling, so that the center of the crown is ribless; (2) in a preset temperature and pressure environment, carbon fiber components are molded; (3) the carbon fiber components are connected by adopting a gluing process to form a whole frame; and (4) the surface of the frame is coarsely repaired and polished. The silica gel shell is used as the skeleton of the bottom bracket, so that the bottom bracket of the frame is reliably molded, and the strength of the molded bottom bracket connecting structure is high.

Description

Technical field [0001] The invention relates to the field of bicycles, in particular to a process for producing a carbon fiber bicycle frame. Background technique [0002] As a new kind of reinforcing fiber, carbon fiber not only has the inherent characteristics of carbon material, but also has the soft processability of textile fiber. Its specific gravity is less than 1 / 4 of steel, but its strength is very high, and its corrosion resistance is outstanding. It is one of the most ideal materials for preparing high-end bicycles, especially bicycle frames for competitions. At present, the mainstream manufacturing method of carbon fiber bicycle frame is made by covering with carbon fiber prepreg cloth and then molding. Because the frame is a complex hollow structure composed of multiple tubes, especially the five-way structure of the frame, the inner space of the five-way The structure is complex, which makes it difficult to install the skeleton in the bottom bracket. The lack of sk...

AI Technical Summary

Problems solved by technology

At present, the mainstream production method of carbon fiber bicycle frame is to make it by molding after covering with carbon fiber prepreg cloth. Since the frame is a complex hollow structure composed of multiple tubes, especially the bottom bracket structure of the frame, due to the space inside the bottom bracket The structure is complex, which makes it difficult to install a skeleton in the bottom bracket at present. Due to the lack of a skeleton in the bottom bracket, the inner space of the bottom bracket of the frame made of carbon fiber is uneven, which affects the structural strength of the connection of the bottom bracket to a certain extent, and even affects Frame manufacturing yield

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