FIELD: process engineering.
SUBSTANCE: invention relates to metallurgy. Claimed tool comprises bottom and top elements with front and rear sides. Said elements comprise base and finger-like elements. First finger-like element makes the first ridge for forming of crimp top on the sheet. Second finger-like element makes the second ridge for forming of crimp recess on the sheet. First ridge is located opposite second ridge. First ridge is shifted from second ridge for interaction between first and second finger-like elements at appropriate position. Ridges include the main and end sections. Space is provided between first and second finger-like elements at position of interaction.
EFFECT: accelerated production.
15 cl, 12 dwg
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