TUBE BENDING MACHINE WITH BENDING MANDREL WITH STRAIN-RESISTANT STRUCTURE Russian patent published in 2012 - IPC B21D9/05

Abstract RU 2438819 C1

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to tube bending processes. Proposed machine comprises extractor secured at machine rear part, piercing rod extending from extractor beyond machine front section whereat clamping female die is arranged to strain tube fitted in the mandrel by resultant force transmitted via piercing rod to extractor to resist resultant clamping response. Note here that tube bending machine comprises bearing structure shaped to have piercing rod lengthwise axis located to subject bearing structure solely to contracting forces.

EFFECT: ruling of bending strains.

8 cl, 8 dwg

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RU 2 438 819 C1

Authors

Kaporusso Alessandro

Dates

2012-01-10—Published

2008-09-15—Filed