Tooling with a die and/or punch of adaptable length for the fabrication of a crosspiece with a closed section, notably for connecting the longitudinal arms of a flexible motor vehicle axle

摘要

#CMT# #/CMT# Tooling for the fabrication of a crosspiece with a closed section for connecting two longitudinal arms of a motor vehicle axle comprises a die (3) cooperating with a punch (2) for forming on the closed section of the crosspiece a lengthwise zone of torsion (L) and a mechanism for retaining the crosspiece in position. The die and/or the punch are adaptable in length to enable the length of the zone of torsion to be adapted. #CMT# : #/CMT# An independent claim is also claimed for the fabrication of a crosspiece with a closed section. #CMT#USE : #/CMT# The tooling is used for the fabrication of a crosspiece with a closed section for connecting two longitudinal arms of a flexible motor vehicle axle. #CMT#ADVANTAGE : #/CMT# The invention provides a fabrication technique that allows better control of the dispersion of the stiffness of the torsion of the crosspiece compared to conventional fabrication techniques. It provides a technique that is of simple conception and easily put into service. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing is a schematic view illustrating the general principle of the invention. 1 : Tubular crosspiece; 2 : Punch; 3 : Die; 4 : Chucks.