SU986556A1 - Method of producing elastic-damping non-woven material - Google Patents

Description

The invention relates to the field of metal forming, in particular to the manufacture of elastic-damping nonwoven materials used in the manufacture of shock absorbers, seals, etc.

A known method of manufacturing a wire nonwoven material £ 13, including the operation of laying with an interference fit of a plastic filler in a matrix matrix made of coiled wire coils, folding the matrix matrix together with the filler into a billet and subsequent pressing.

The grid matrix in the specified method acts as a plastic reinforcing layer in the material, increasing the tensile strength of the material. However, the material manufactured in this way has a low bearing capacity, in most cases insufficient for the required working conditions of the elastic damping element.

A known method of manufacturing a wire non-woven material [2], including the preparation of a workpiece by folding a mesh made of coiled wire coils, and subsequent crimping of the workpiece. However, the resulting material has an even lower bearing capacity.

^e In order to increase the bearing capacity of the known method of manufacturing an elastic-damping non-woven material, comprising obtaining the preform by rolling the mesh made of entangled coils of wire spirals, and the follow-molding the preform according to the invention in the preparation of the preform mesh wrapped around a package of reinforcing plates, and molding the preform produce in a direction perpendicular to the lateral plane of the plate package. In addition, in order to increase damping, the reinforcing plates are pre-corrugated.

The essence of the described method of manufacturing an elastic material is illustrated in the drawing.

an example of a specific implementation of the method.

A package of plates, for example, with a thickness of 0.4-0.5, a width of 20g-30 mm in an amount of 5 pieces of steel 65 g or 50 X15 NJ, the length corresponding to the shock absorber being manufactured, is pre-corrugated. Then the corrugations are thermofixed, stretched in the clamps until they are completely straightened and wrapped with a mesh made of stretched '· wire spirals interlocked with coils and crimped in a stretched state in a special mold. After that, the manufactured elastic-damping element is released from the clamps and assembly work is performed to obtain an annular shock absorber. The shock absorber assembled from the material obtained in the described manner is shown in the drawing.

IS

The shock absorber works as follows.

A damping element formed by a compressed from a wire spiral 1 and reinforced with an elastic package. plate 2 transmits through the clamps 3 the load on the base 4, while the dissipation of vibrational energy occurs due to friction in the package of plates against each other and the friction of the wires together in the pressed winding. By changing the number of plates in the reinforcing bag 2, their thickness and width, it is possible to adjust the frequency and same stiffness characteristics of the shock absorber in a wide range and in the necessary directions, to ensure the isotropy of stiffness and damping properties.

Unlike the basic object of the method of manufacturing a shock absorber, the proposed method has the following technical and economic advantages:

due to the increase in the bearing capacity, the scope of application of shock absorbers made in the described way has been significantly expanded;

due to the fact that the reinforcing element is made of a package of plates pre-corrugated, the damping ability is increased, since the dispersion of the vibration energy occurs additionally due to the friction of the plates against each other by the contact pads.

In addition, the proposed method allows to increase the isotropy of the elastic damping and frequency characteristics.

account by

Claims (2)

manufactured shock absorber, pre-corrugated. Then the corrugations are heat-set, stretched in clamps until they are completely straightened and wrapped with a mesh made of interlocked stretched wire spirals and pressed together in a stretched condition in a special mold. After that, the manufactured elastic damping element is released from the clamps and assembly works are performed to obtain a ring damper. The shock absorber collected from the material obtained in the manner described is shown in the drawing. The shock absorber works as follows. A damping element formed of a wire helix 1 and reinforced with a package of elastic plates 2 transfers the load to the base 4 through the clips 3. At the same time, the oscillation energy dissipation occurs due to the friction in the plate pack against each other and the friction of wires between in the winding. By varying the number of plates in the reinforcement package 2, their thickness and width, the frequency and stiffness characteristics of the shock absorber can be adjusted within wide limits and the necessary directions, will ensure that the stiffness and damping properties are isotropic. In contrast to the basic object of the method of manufacturing the shock absorber, the proposed method has the following technical features: economic advantages: due to an increase in the carrying capacity, the scope of use of shock absorbers made by the method described by the method has been significantly expanded; Due to the fact that the reinforcing element is made of a plate pack, preliminarily corrugated, the damping capacity is increased, since the dissipation of the oscillation energy occurs additionally due to the friction of the plates against each other over the contact areas, the proposed method allows increasing the isotropy of the elastic-deforming and frequency characteristics . Claim 1, a method of manufacturing an elastic-damping nonwoven material, comprising: obtaining a preform by folding a mesh made of interlocked wire coils and then crimping the preform, characterized in that, to obtain a blank, the net is folded around a package of reinforcing plates, The crimping of the workpiece is carried out in the direction perpendicular to the lateral plane of the plate pack, 2. A method according to claim 1, characterized in that, in order to increase the damping, the reinforcing plates are pre-crimped, the sources of information ,. taken into account during the examination 1. USSR author's certificate B 642905, Cl, H 21 P 21/00, 1978, 2, Method of manufacturing non-woven wire material pST 92-8715-75.