SU637188A1 - Riveting anvil - Google Patents

Description

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The invention relates to the field of riveting and assembly work, in particular to the riveting tool - support for riveting in hard-to-reach places.

A device for repairing automotive panels is known l.

This device contains an anvil, a rod with a handle at the end, a spring probe for orienting the anvil and increasing the pressing force.

When the impact eccentricity occurs when riveting rivets located close to the wall, the vibration of the mechanical device increases sharply, as torsional vibrations will additionally appear. This leads to the fact that the anvil is difficult to hold on the rivet and it can slip off the rivet.

The purpose of the invention is to reduce torsional vibrations that occur when riveting along an eccentric axis.

The goal is achieved by the goal of the proposed support provided with hollow housings symmetrically and parallel to the hinge mounted on the handle about its axis and the shock absorbers placed in them.

FIG. 1 shows support, general view; in fig. 2 - section A-A of FIG. 1 (the position of the support, the rivets and the riveted assembly); in fig. 3 - section bb FIG. 1 (on the handle at the end of the support).

The support for riveting comprises an anvil 1 connected by a rod 2 with a handle 3. Hollow bodies 5, for example cylindrical, spaced apart relative to the axis of the handle 3, are symmetrically and parallelly attached to the handle 3 by means of rigid connecting elements 4. In hollow arrays 5 are mounted with a gap cL, shock absorbers are shock-acting, and for example, steel trimmed rods.

The work of the proposed support is carried out as follows.

Claims (1)

When riveting rivets in hard-to-reach places, such as rivets 7, located close to the knot wall 8, such as a closed loop, the operator inserts support into the knot and leads to the rivet anvil 1. Since the rivet 7 is located close to the wall 8 of the knotted knot, the center of the anvil 1 and the center of the rivet 7 do not coincide by the value of S eccentricity. When striking the anvil 1 with eccentricity, support tends to turn in the hands of the operator. The frequency of blows in rim riveting in the rivet causes torsional vibrations. To reduce these vibrations, which are additional sources of vibration and lead to an unstable position of anvil 1 on rivet 7, support is offered. It has separated parallel and symmetrical bodies 5 that are rigidly fixed to the handle 3, thereby increasing the moment of inertia of the support around the longitudinal axis of the handle These 3 and prevent the rotation of the support around this axis. In order to increase the efficiency, the spaced masses 5 are made hollow, which makes it possible to install shock absorbers in them. Since the dampers 6 are installed in hollow bodies 5 with a clearance O), after striking an anvil 1, they, due to their inertness, retain their original position until the turning weight of the hollow body 5 contacts 63 84 from the opposite damper wall 6 and no impact will occur. In this case, the rate of rotation of the support decreases and, consequently, the amplitude of the torsional vibrations decreases. Thus, when riveting, the proposed support of rivets, whose axis does not intersect with the axis of the support handle, i.e. with an eccentricity of impact, the amplitude of torsional vibrations is reduced and the total support vibration is reduced by 2 times. Claims for riveting, comprising a handle connected by a rod with an anvil, characterized in that, in order to reduce torsional vibrations arising from riveting along an eccentric axis, it is provided with hollow housings and placed in them shock absorbers. Sources of information taken into account in the examination: l. US patent No. 27453О2, cl. 72-465, 1956. Aa at