Friction penetration self-extrusion screw

Abstract

The invention discloses a friction fusion penetration self-extrusion screw, relates to the related field of sheet metal installation, and aims to solve the problem that the conventional sheet metal structure connection thread formation does not break through a traditional mode to simply, conveniently and quickly improve the efficiency. The friction fusion penetration self-extrusion screw comprises a cone positioning tip, wherein a reaming cone is fixedly connected to the top end of the cone positioning tip, a hole shaping section is fixedly connected to the top end of the reaming cone, a transition section is fixedly connected to the top end of the hole shaping section, a self-tapping thread section is fixedly connected to the top end of the transition section, a self-tapping thread is arranged on the outer surface of the self-tapping thread section, a cylindrical locking thread section is fixedly connected to the top end of the self-tapping thread section, an outer thread is arranged on the outer surface of the cylindrical locking thread section, a transition circular bead is fixedly connected to the top end of the cylindrical locking thread section, a concave containing ring is fixedly connected to the top end of the transition circular bead, and the top end of the concave containing ring is fixedly connected with a flange.

Description

technical field [0001] The invention relates to the related field of sheet metal installation, in particular to a frictional melting self-extrusion screw. Background technique [0002] Screws and bolts are basic single parts for industrial applications. They connect and fasten two or more structural parts. Usually, the fastened structural parts and the fastened structural parts will have prefabricated threaded holes, or can be extruded or cut to form threads. The prefabricated holes are connected and fastened by steel self-tapping screws or bolts. [0003] In recent years, more and more fusion drilling technology has been used in the formation of connecting threads of sheet metal structures in China to form threads through tap cutting after perforation without waste; there is no breakthrough in the traditional way to achieve simple and rapid performance improvement, especially Applied in the installation and application of lightweight and lightweight metal sheet metal compo...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a friction melting self-extruding screw to solve the problem that the connection thread formation of the current vehicle-sized sheet metal structure does not break through the traditional way proposed in the above background technology, and realize the problem of simple and rapid improvement of performance

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