The Manufacture of Cylindrical Parts by Drawing Using a Telescopic Punch

The paper deals with the analysis of the possibility of intensifying the process of drawing sheet workpieces by changing the design of equipment. It is shown that this method of sheet stamping is characterized by the introduction of non-waste technologies and the production of parts that do not require final processing. However, the task of developing rational technological processes of drawing, requiring the minimum labor input and the cost of manufacturing specified parts with the best quality, is still particularly urgent. Modern enterprises operating in conditions of frequent changes in the range of manufactured parts seek to minimize the cost of tools and equipment to reduce the cost of the process. Therefore, the unification of the tool, simplification of the design of die tooling in the conditions of flexible serial production will make it possible, with minimal loss of time, to switch to the release of new products. A method of pressure-free stamping using a telescopic punch is proposed. Also, the fundamental possibility of drawing by the proposed method is confirmed based on the performed research. A method for calculating the punch lock springs is developed. The demonstrated technological calculations make it possible to proceed to the design and calculation of die tooling and punch power springs, which contributes to the manufacture of high-quality parts, reducing labor intensity and eliminating the use of a double-acting press. As a result, the proposed technical measures will reduce the technological cost of the product.