SU441065A1 - Method of making contact spring elements - Google Patents

Description

one

The invention relates to the formation of metal by pressure and can be used in the electromechanical industry.

There is a known method for manufacturing contact spring elements, including rolling the tape into a tube. However, with this method, the products are obtained with a uniform, wall thickness and, consequently, with low spring properties.

The aim of the invention is to increase the spring properties of the product.

This is achieved due to the fact that, according to the proposed method, the tape is rolled into a tube with a uniform skEAZ slot located along its generatrix, and the resulting semi-finished product is then drawn on the mandrel through fillers until the required diameter is obtained.

I The drawing shows the proposed product obtained by the proposed method.

The flat ribbon, coated with silver, is rolled up into a tube with a uniform gap through it, which is located along the generator tube. The slit width is about one third of the tube diameter, and

0 the thickness of the original tape should be 1.5-2 times the average thickness of the product.

The obtained semi-finished product is subjected to drawing through a row of dies not on a mandrel-wire, whose diameter is equal to the internal diameter of the tube. Due to the presence of a gap, when drawing on the tube wall, they vary along its perimeter.

0 specific pressures, with large pressures acting on a portion of the surface of the tube adjacent to the slit. This leads to a symmetrical sealing of the tube wall to the slit, in

5 resulting in a product being obtained

With a variable wall thickness and, accordingly, about increased springs.

BACKGROUND OF THE INVENTION A method for manufacturing contact spring elements in which a ribbon is rolled. into a tube different

For the purpose of increasing the spring properties of the product, the tape is rolled into a tube with a uniform through slot located along its generatrix, and the resulting semi-finished product is then pulled on the mandrel through dies to obtain the desired outer diameter.