CHAIN PRESSING DEVICE, METHOD OF TUBULAR OR HOSE PART PRESSING-IN AND PRESSING CHAIN Russian patent published in 2017 - IPC B25B27/10 B21D39/04 

FIELD: machine building.

SUBSTANCE: invention relates to chain pressing device. Chain pressing device (1) to form tubular or hose part with fitting and/or bushing is equipped with at least three additional external pressing links (2, 4, 5). Additional external compression link (2, 4, 5) inner surface areas have straightline sections, arranged perpendicular to direction of pressing and passing at angle of less than 180° relative to each other. Provided is drive for action on every inner pressing link (6) in its outer surface area through two inner surface areas of one or more external pressing links (2, 3, 4, 5) for transmission of pressing force. Plurality of inner pressing links (6) and plurality of external pressing links (2, 3, 4, 5) inner and outer pressuring chains are made with possibility of opening for placing around system of parts subject to pressing to each other, wherein outer pressing links (2, 3, 4, 5) are connected to each other so, that they are made with possibility of being turned in open state relative to each other in opening or closing direction.

EFFECT: technical result consists in possibility of pressing-in of two sections forming tubular or hose part of different diameter.

9 cl, 8 dwg