212 subject to alterations Drawing Punch Draw Ring Workpiece Pressure Ring Draw Die Nitrogen Die Cylinder Working Stroke = 19,5 mm Ejector Bending tool for round bars This tool has 2 gas springs with a pad function. The stroke height of the eccentric press is 92 mm, while the working stroke is approx. 66 mm. Because of manual loading, press strokes vary from 36 to 40 SPM. Part ejection is automatic. The nitrogen die cylinders provide an initial force of 7,5 kN each, and a stroke capacity of 80 mm. Press Ram Top Bolster Nitrogen Die Cylinder Thrust Insert Clamping Stripper Detail of progression compound tool with 2 gas springs that act as pads. The two gas springs each have an initial 15 kN gas pressure, a 25 mm nominal stroke and a 20 mm working stroke. Drawing tool For use on a 100 ton SMG hydraulic drawing press with a gas spring built into the punch. In this application the die cylinder serves to accomplish the initial pre-draw of the internal shape, as well as for finish the draw over the draw ring – after the bottoming pressure of 30 kN has been reached. The nitrogen die cylinder has an initial cylinder force of 30 kN, a stroke capacity of 25 mm – of which 19,5 mm are utilized in operation. Stroking speed is 4 SPM. Application examples
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