| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: proposed invention relates to method of bending edge strips in sheets bent into splined tube and bending press to this end. Top die is designed to match with contour being formed. Bottom die is arranged opposite top die to displace vertically. Fixed edge strip is bent in single pass at clamped sheet press frame to necessary edge shape. Note here that, at the very beginning of bending, bottom die working surface getting in contact with bottom surface of edge strip features flat fit according to Hertz forming theory. ^ EFFECT: rulled out formation of ''upper edges'' and their crumbling. ^ 10 cl, 2 dwg |
