Drawing rivet guns

Abstract

The invention discloses a riveter comprising a piston and an abdication group with an inner liner ring and an outer liner ring, wherein the inner liner ring with a sleeve structure has the external diameter being divided into a small-diameter part and a bigger-diameter part, between which step transition is provided, and external surface of the small-diameter part is provided with outside screw; the outer liner ring is in sleeve structure cooperating with the inner liner ring, and internal diameter face of the outer liner ring has internal screw coordinating with the outside screw of the outer liner ring. The small-diameter parts on external surface of an outer abdication ring and an inner abdication ring are fixed by the screws, and are screwed down, then a rear end of the outer liner ring bears against the step of the inner liner ring and the frond end of the outer liner ring aligns to a frond end of the inner liner ring, wherein the external diameter face at an adjacent position of the small-diameter part and bigger-diameter part of the inner abdication ring is of smooth plane. Preferred, the piston adopts an integrated structure of the piston column and the piston plate, according to the above improvement of the structure, service time in fault-free of the riveter is prolonged.

Description

technical field [0001] The invention relates to riveting technology, in particular to a riveting gun. Background technique [0002] Riveting technology is a widely used mechanical connection technology. Commonly known as riveting, it is a non-detachable rigid connection that uses rivets to connect parts. A rivet used in riveting is a cylindrical metal element with a cap. There are many ways to realize the specific riveting process. Among them, the riveting process commonly used in locomotive manufacturing is the riveting process. [0003] Figures 1 and 2 show a blind riveting process used in locomotive manufacturing. The figure shows the parts involved in the riveting operation, including the rivet 1, the collar 2, the workpiece 3, and the workpiece 4. Wherein, the rivet 1 and the collar 2 jointly form a connecting piece, and the workpiece 3 and the workpiece 4 are workpieces to be connected. The rivet 1 includes a cylindrical nail body with a cap at one end of the cylin...

AI Technical Summary

Problems solved by technology

[0017] During the whole process, the abdication group basically has been withstood the end face of the collar 2 and is subjected to relatively large pressure, and a relatively weak part is formed at the undercut of the stepped part A, which causes stress concentration and makes it easy to break from the site

[0018] The piston 14 is always subjected to great force during the riveting process, and the cylinder 141 and the piston disc 142 are connected by welding, resulting in an unstable connection between the two, resulting in frequent breakage or leakage of the piston 14

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