CS263110B1 - Friction welding of metals - Google Patents

Abstract

The purpose of the invention is to create a new device for friction welding of metals, which achieves a reduction in energy consumption, the possibility of welding semi-finished products and other cross-sections than circular and simplified clamping of parts. The device for friction welding of metals consists of an eccentrically mounted unbalanced mass - an exciter connected to a controllable motor via a flexible or articulated shaft. The exciter is mounted on a flexibly mounted mass, which is guided by guides and connected to a clamping system for the first part of the weld. The device has a movable pressure mechanism for mediating the welded connection, which carries a clamping system for clamping the second part of the weld. All these parts of the device are mounted in a supporting frame. The device has guides for alternating translational oscillations or guides for alternating torsional oscillations.

Description

The invention relates to a resilient element for shaft couplings, resilient hinges of machine parts subjected to vibration, to the handles of vibrating devices and the like.

The shaft couplings hitherto used to transmit the torque of two coaxial shafts consist of a plurality of resilient members, such as bushings of rubber or leather, or rubber bushes vulcanized into metal rings.

At higher dynamic stresses, thick-walled bushings increase in temperature, causing adverse changes in the casing material. The use of a plurality of resilient bushings causes uneven loading of the individual members, so that the stresses of the exposed members reach the limit of the load-bearing capacity of the material. Known are also shaft couplings with massive elastic members, which, although they have a longer service life, but at the same time less damping effect, which adversely affects the service life of the entire set. Some improvement has been achieved by a flexible plastic housing formed of two concentric rings interconnected by at least three radial ribs, or alternatively of this solution with alternately interrupted peripheral walls of the rings between the ribs.

Compared to said solutions, a resilient element for shaft couplings, resilient hinges of machine parts subjected to vibration, for handles of vibrating devices, and the like consists of two plastic concentric rings connected by at least three crank ribs. It is an object of the invention that the circumferential wall of the inner ring or outer ring or the walls of both rings are interrupted between the ribs at least once, the ends of each interruption being interconnected by a joint extending in the direction between the two rings.

Increased flexibility of the element according to the invention considerably extends the possibility of use and reduces the demands on manufacturing accuracy which has an impact on economy, simplifies maintenance and increases

AND

263 110 vibration life of machine parts.

The described solution is particularly intended for shaft couplings between an electric motor and a piston compressor. This solution enables reliable operation even if the electric motor is not positioned correctly against the compressor and with larger tolerances of the holes and pins for accommodating the elastic elements. The manufacturing tolerances themselves may be larger than the known embodiments.

The accompanying drawings show two possible embodiments of a resilient element used for a shaft coupling between an electric motor and a reciprocating compressor, wherein FIG. 1 is a side elevational view of the resilient element with the circumferential wall of the inner ring X and the circumferential wall of the outer ring 2. FIG. . 2 shows a plan view of a resilient element with a once interrupted wall of the inner ring X and a joint 4 connecting both ends of the interruption between the ribs χ. Giant. 3 shows a plan view of an example of another embodiment of the resilient element where the peripheral wall of the inner ring X is interrupted a total of three times and the ends of the interrupts are interconnected between the ribs χ. the connection 4 extending in the direction of the annulus of both rings.

Claims (1)

SUBJECT OF THE INVENTION 263 110 A resilient element for shaft couplings, resilient hinges subjected to vibration, for vibrating device handles and the like, consisting of two plastic concentric rings connected to each other by at least three crank ribs, characterized in that the peripheral wall of the inner ring (1) or the peripheral wall the outer ring (2) or the two circumferential walls of the rings (1, 2) are interrupted at least once between the ribs (3), the ends of each interruption being interconnected by a joint (4) in the direction between the two rings.