Newfrey Lcc

Paul Hez

Paul Bartig

Matthias Wissling

Frank Wilhelm

A punch rivet for joining two workpieces, has a head and a shank. The shank is hollow with a shank internal diameter (D), a shank external diameter (D) and a shank end face. On the shank end face is a ring cutting edge with diameter (D) that is smaller than the external diameter (D) but greater than the internal diameter (D). The ring cutting edge is radially spaced both from the shank external diameter (D) and from the shank internal diameter (D) by at least 20% of the radial shank wall thickness (M). And the ratio D/Dof shank internal diameter Dto shank external diameter Dis smaller than 0.6. And the external diameter (D) merges into an external circumference of the head by a second profile, which defines an underhead radius (R), and the ratio of Rto D(R/D) is smaller than 0.13.

Punch rivet and method for producing a punch-riveted joint

A punch rivet for joining two workpieces, has a head and a shank. The shank is a hollow shank with a shank internal diameter (D), a shank external diameter (D) and a shank end face. On the shank end face is a ring cutting edge with the diameter (D) that is smaller than the shank external diameter (D) but greater than the shank internal diameter (D). The ring cutting edge is radially spaced both from the shank external diameter (D) and from the shank internal diameter (D) by at least 20% of the radial shank wall thickness (M). And the ratio D/Dof shank internal diameter Dto shank external diameter Dis smaller than 0.6.

Growing community of inventors

Giessen, Germany

Paul Hez