Method for forming and preparing carbon fiber drive shaft for college students' formula car

Abstract

The invention relates to a method for forming and preparing a carbon fiber drive shaft for a college students' formula car. Carbon fiber prepregs are used for winding a mandrel, after the mandrel is connected with connecting ends, winding is preformed continuously. The mandrel is removed by solidification after winding, spline ends are connected to form an integral shaft, a carbon fiber shaft bodyis formed by symmetrical angle layering in three stages, the metal connection ends are divided into flange edges and internal and external gluing parts, the spline ends are divided into flange edgesand spline parts, and the carbon fiber shaft body and the metal connection ends are in a double-lapped connection and mechanical connection mode, and the metal connection ends and the spline ends arefixed by bolts passing through the holes of the flange edges. The drive shaft can be used for various purposes by replacing the spline ends, has high durability and high fiber content, the connectionstrength between the metal connection end and the carbon fiber shaft body is high, the mass of the drive shaft is low, the rotational inertia is small and the natural frequency is high.

Description

technical field [0001] The invention belongs to the fields of composite materials and traditional mechanical processing, and specifically relates to a forming process of carbon fiber shaft-shaped products and a mechanical processing process of revolving parts, and specifically refers to a forming and preparation process of a carbon fiber transmission shaft for Formula Student racing cars. Background technique [0002] Carbon fiber is a special fiber composed of carbon elements, which has the characteristics of general carbon materials such as abrasion resistance, electrical conductivity, and thermal conductivity, and also has the characteristics of anisotropy. It has lower density than metal aluminum, higher specific weight, higher specific strength of steel resistance, better mold corrosion resistance and better fatigue resistance. During the collision, the energy absorption capacity of carbon fiber composite materials is 5-6 times that of steel. Due to its superior perfor...

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Problems solved by technology

[0003] The invention provides a method for forming and preparing a carbon fiber transmission shaft for a Formula Student racing car, the purpose of which is to overcome the defect that the traditional carbon fiber shaft body and the metal connection end are not firmly bonded and the quality and corrosion resistance of the traditional steel transmission shaft of a Formula Student racing car performance deficiencies

Provides a "double lap-mechanical connection" hybrid connection method to connect the carbon fiber transmission shaft body and the metal joint, which solves the existing problem of unstable connection; at the same time, the carbon fiber transmission shaft is light in weight and has a small moment of inertia. The characteristics of high natural frequency make up for the deficiency of the traditional steel drive shaft, and greatly improve the transmission performance of the car

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