die of stressed design

摘要

A die of stressed design, each of halves of which contains working insert made of high-speed steel and one-piece die-case made of stamp or structural steel, which has open-end hole and encloses working insert with interference, which allows its pressing-off, moreover opening in the die-case is closed by supporting cover made of stamp or structural steel, on which working insert rests and which has the capability of separation from the die-case.