A combined positioning shaft and positioning method

Abstract

The invention proposes a combined positioning shaft and positioning method, which is composed of an upper mold shaft sleeve, a central positioning shaft, a split type protection shaft sleeve and a lower mold shaft sleeve. The central positioning shaft is a cylinder in the middle and a cone at both ends. The shape of the jujube pit, the middle part of the central positioning shaft is interference fit with the split type protective bushing, and the upper and lower ends are respectively matched with the upper die bushing and the lower die bushing. The invention adopts a unique combined structure, which can ensure that the positioning shaft does not have any relative displacement with the metal joint of the wing, avoids the generation of scratches, and at the same time can achieve accurate positioning during the forming of the wing and quickly separate the positioning shaft from the forming system when demolding , can smoothly realize the positioning of the composite material wing forming process, and ensure the accuracy requirements of the dihedral angle and installation angle of the wing.

Description

technical field [0001] The invention relates to a combined positioning shaft and a positioning method, which belong to the technical field of composite material forming and positioning. Background technique [0002] The composite material of the missile body structure can achieve a large weight reduction of the missile body, increase the payload of the missile, and effectively improve the tactical performance of the missile weapon system such as speed, range, maneuverability and lethality. It has become an advanced stealth missile body The development direction of structural materials. [0003] Foreign countries often regard the application ratio of composite materials in missile body structure as an important criterion for measuring the development level of missiles. In the process of catching up with foreign advanced all-composite material tactical missiles, the composite materials of missile body structure (including missile wings) In the development of the domestic aero...

AI Technical Summary

Problems solved by technology

Since the uniformity of the fit gap between the positioning shaft and the joint hole is not easy to control, it is difficult to ensure the vertical angle between the positioning shaft and the forming tooling

When the positioning shaft and the metal joint hole are at a certain normal angle, the sharp part of the edge may scratch the metal joint hole and the supporting shaft hole of the forming tool, and the burr of the forming tool shaft hole will further affect the assembly and disassembly of the positioning shaft process, a vicious circle

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