Flanging riveting device and method for outward expansion joint bearing

Abstract

The invention discloses an external expansion joint bearing flanging pressure riveting device and method. According to the external expansion joint bearing flanging pressure riveting device, through aconical surface matching structure, a pressure riveting head is made to expand in the radial direction of a tool while the riveting head moving downward in the process of pressure riveting and flanging, outward lateral horizontal motion is increased, and acting force on outward flanging is increased. The external expansion joint bearing flanging pressure riveting device comprises a core shaft, the pressure riveting head, a wave-shaped spring, and a nut. According to the external expansion joint bearing flanging pressure riveting device, the pressure riveting head is made to move along the conical surface through conical surface coordination between the pressure riveting head and the core shaft with the conical degree, outward expansion and flanging movement of the front section of the pressure riveting head is realized, a V-shaped groove is easily flanged and formed, the effect of upsetting of an outer ring is reduced, starting torque increasing and failure, internal ring and outer ring locking are avoided, the technology quality of joint bearing installation and fixation is improved, and the tool is simple in structure, and the method is easy to realize.

Description

technical field [0001] The invention belongs to the installation technology of joint bearings, and in particular relates to a flanging riveting device and method for an externally expanding joint bearing. Background technique [0002] In the aviation manufacturing industry, the V-shaped groove flanging installation and fixing method is generally used for joint bearings, that is, the V-shaped groove of the spherical plain bearing with a V-shaped groove on the outer ring is formed on the seat ring by flanging to realize installation and fixing. Because the quality of flanging is directly related to the safety and service life of the mechanism connection, it is very important to develop high-quality riveting installation technology and tools. [0003] At present, there are three main processes for flanging and forming V-shaped grooves: the first is pressure riveting, which uses a riveting head shaped according to aviation standards to extrude the material outside the V-shaped g...

AI Technical Summary

Problems solved by technology

For example, in the current riveting method commonly used in production, during the riveting process, a downward riveting force is applied, and the outer side of the tooth tip of the riveting head is squeezed against the V-shaped groove of the outer ring of the spherical plain bearing to make the outer ring of the spherical plain bearing The outer flanging of the V-shaped groove of the circle is placed on the seat ring. During this process, the tip of the tooth is always moving downward, and the downward riveting force is partially decomposed into the force required for the outward flanging deformation of the V-shaped groove. Part of it is decomposed into the force of upsetting deformation caused by pressing down the outer ring, which makes the riveting force larger, the upsetting effect of the outer ring is greater, and most of the energy generated by the down-pressing movement is used for the axial upsetting of the outer ring of the spherical plain bearing , only a small part of the energy is used to form the V-groove flange of the outer ring of the spherical plain bearing. Therefore, the pressure riveting is likely to cause the upset deformation of the outer ring of the spherical plain bearing, so that the fit of the inner and outer rings of the spherical plain bearing becomes tighter, and the starting torque increases with the Exceeding the standard, even lock failure

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