Cartridge holder clamping petal of carbon fiber composite armor-piercing bullet and forming method and forming die thereof

Abstract

The invention belongs to the technical field of armor-piercing projectile supports, and particularly relates to a carbon fiber composite armor-piercing projectile support clamping petal, a forming method of the carbon fiber composite armor-piercing projectile support clamping petal and a forming mold. The advantages of the short cut carbon fiber prepreg in complex shape forming and the high strength of continuous fibers are integrated, the structure of the bullet support clamping petal is divided into the tooth reinforcing plate and the shell, the tooth reinforcing plate is embedded in the annular groove of the shell, the tooth strength is enhanced, the tooth reinforcing plate is formed by fabric carbon fiber prepreg in a mold pressing and machining mode, and the service life of the bullet support clamping petal is prolonged. The shell is formed by mould pressing of the short carbon fiber prepreg, compared with a continuous carbon fiber mould pressing process, the laying time in the manufacturing process is greatly shortened, and the manufacturing efficiency is improved; compared with a chopped carbon fiber prepreg mold pressing process, the strength of the teeth is improved through the tooth reinforcing plate, and the teeth are prevented from being broken when the armor-piercing bullet is launched; compared with a metal sabot, the density of the product can be reduced to about 1.4 g / cm < 3 >, and the negative mass in the launching process is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of armor-piercing projectile support, and in particular relates to a support flap of a carbon fiber composite material armor-piercing projectile, a forming method thereof and a forming mold. Background technique [0002] The bullet holder is an important part of the armor-piercing projectile. Most of the currently used bullet holders adopt a saddle-shaped structure that is divided into three or four bullet holders along its axial direction (see figure 1 ), the ejector flap includes a shell with a fan-shaped ring section, the inner wall of the shell is uniformly provided with fan-shaped teeth along the axial direction, and the outer wall of the shell is provided with a front centering part and a rear centering part at intervals along the axial direction. The outer peripheral surface of the centering part is also provided with elastic band grooves. When the armor-piercing projectile is launched, the three or ...

AI Technical Summary

Problems solved by technology

[0003] At present, the material of the armor-piercing bullet carrier is metal material, lightweight composite material, etc. The bullet carrier of metal material will produce a large negative mass when fired, which will affect the initial velocity of the armor-piercing projectile and cause a certain impact on the flight of the armor-piercing projectile; Although the bomb holder made of high-quality composite materials greatly reduces the negative quality, but at present, injection molding or compression molding is mostly used. The former has a low fiber volume content and is prone to resin-rich tooth areas, resulting in low tooth strength and easy firing. damage during the process; if the latter uses chopped carbon fiber prepreg, it will have the same problems as the injection molding process. If continuous carbon fiber prepreg is used, the tooth area and its complex shape of the bullet holder will not be easy to overlay and mold, and the efficiency will be low.

See the Chinese patent document (application number 202110259766.1) which discloses a tail-stabilized shell-piercing armor-piercing shell and its preparation method. The body is molded from chopped carbon fiber prepreg yarn; this preparation method includes the steps of spring holder design, tooth bud preforming and clip forming, etc., and has the following technical defects: 1. The tooth laying process is inefficient and poor in quality stability; 2. A single 120° flap requires a total of more than three curing processes, which are the curing of several tooth-shaped blocks, the bonding between the tooth-shaped blocks, and the final co-glue curing of the shell and the teeth, high energy consumption and low efficiency , the equipment required is more tooling; 3. The structural integrity is poor, and there are a lot of bonding interfaces, which are prone to damage

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