Browse Publications Technical Papers 2001-01-1137
2001-03-05

Controllable Nitrogen Cylinders for Deep Drawing Dies 2001-01-1137

A gas spring is a cylinder charged with nitrogen gas at a pressure up to 150 bars. The gas pressure acts on the piston of the spring and provides a permanent force. In the field of metal forming, nitrogen gas springs are used for bringing up high closing or clamping forces, replacing conventional springs or even hydraulic or pneumatic cushion systems in the table of single acting presses.
State of the art is a nitrogen spring with a more or less progressive force over the stroke. But for deep drawing applications a decreasing force over the stroke is often needed. Furthermore it would be a great advantage to control the force of the gas spring over the stroke.
Controllable nitrogen springs have been investigated at the Institute for Metal Forming Technology (IFU) of the University of Stuttgart.
This paper gives an overview about the basics of the nitrogen spring technology and discusses the newly developed technology that makes it possible to control the gas spring force over the stroke.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Cold engine cranking torque requirement analysis

2007-01-1967

View Details

TECHNICAL PAPER

A More Complete Analysis of Unsteady Gas Flow Through a High-Specific-Output Two-Cycle Engine

720156

View Details

TECHNICAL PAPER

Economics of the Chevrolet Engine

290009

View Details

X