FIELD: plastic working of metals.
SUBSTANCE: apparatus includes housing with cover; mounted in housing punch, die, lower holder arranged along the same axis and upper holder. Upper holder is in the form of disc spring mounted coaxially relative to punch. Guiding ring with stops acting upon upper holder is mounted under cover. In cover there are seats in which members for spring-loading stops are placed. Cover if mounted in housing with possibility of rotation. Pressure ring may be placed between upper holder and stops. The last may be in the form of rollers. Apparatus may include in addition step motion drive mechanism.
EFFECT: simplified design of apparatus.
4 cl, 1 dwg
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SU747577A1 |
