FIELD: process engineering.
SUBSTANCE: invention relates to metal forming, particularly, to production of helical section tubes. Proposed device case comprises two holders with shaped rings mounted along tube axis. One said holder may de driven about its axis while another holder is fixed relative to case axis. Note here that aforesaid rings are shaped to initial tune section. Said case comprises translation drive with return drive.
EFFECT: expanded range of produced tubes.
2 dwg
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