Further developments of the tools for the realization of junction points sheet by cold forming.

摘要

PERFECTION IN THE TOOLS FOR THE REALIZATION OF POINTS OF UNION OF PLATES cold flow, comprising said TOOLS a first tool (1) with a punch (6) and a PISA (5) and a second tool (10) with a surface GUIDE (16) FROM WHICH IS LIFTING A FINGER (14) terminated by a ANVIL (15), a matrix (20) formed by at least two shells (18), each of said shells (18) A OUTGOING (21) MOUNTED SLIDING AGAINST guide surface (16) and being pressed against the side surface of the finger (14) spring means (26) being provided guide means shells (18) and a stop limiting SEPARATE SUCH COQUILLA (18) to each other during flow, said improvements being characterized in that the stop consists of two half-shells (30) fixed elastically on the second tool (10).