Double-end pressure riveting method, riveting pin and pressure riveting device

Abstract

Disclosed are a double-end pressure riveting method, a riveting pin and a pressure riveting device. The pressure riveting method includes that a part to be riveted is fixed by a clamping fixture, an upper riveting head and a lower riveting head are fixed onto a pressure riveting die, the riveting pin is placed, and then the riveting heads linearly move to squeeze two ends of the riveting pin and perform pressure riveting for the double ends simultaneously. The riveting pin is a three-journal type riveting pin, the size of a middle journal of the riveting pin is larger than that of each of journals at the two ends of the riveting pin, the journals at the two ends are in partially hollow structures, and the journals at the two ends of the riveting pin after pressure riveting are partially upset. The double-end pressure riveting method can be used for realizing double-end pressure riveting for a plurality of riveting pins simultaneously, the riveting process is stable and reliable, riveting efficiency and quality are improved obviously, and riveting cost is reduced.

Description

technical field [0001] The invention belongs to the riveting connection technology of metal parts, and in particular relates to a double-end riveting method for realizing a double-end riveting process, a riveting pin and a riveting device. Background technique [0002] Riveting refers to the method of using axial force to thicken the head of the riveting pin (nail) to connect and fix multiple parts; from the principle of riveting, it can be divided into spin riveting and pressure riveting. At present, the traditional riveting process is mostly single-end spin riveting, but due to the limitation of the process itself, it has the following problems. First of all, due to the limitation of the structure and working principle of the spin riveting machine, it can only be riveted at one end when riveting. , it needs to be riveted in multiple steps, and the efficiency is too low. Secondly, when the space of the riveted parts is very tight, the riveting process is unstable due to t...

AI Technical Summary

Problems solved by technology

First of all, due to the limitation of the structure and working principle of the spin riveting machine, it can only be riveted at one end when riveting. , multi-step riveting is required, the efficiency is too low

Secondly, when the space of the riveted parts is very tight, the riveting process is unstable due to the rotation of the riveting head and the surrounding parts are easily scratched, and the appearance of the riveted parts is defective; and when the riveting head is worn, burrs will be generated during the riveting process, and there will be scratches finger safety hazard

Furthermore, when the rivet pin (nail) is solid and the diameters at both ends are large, the force required for the riveting will be very large, which will easily cause the journal of the middle section of the rivet pin (nail) to be upset, and the parts to be riveted with the rivet pin (Nail) The parts with clearance fit in the middle section of the journal are riveted, resulting in product performance degradation or functional failure.

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