Olsen Metaltrykkeri A/S
Hadsundvej 8
DK-
Tel +45 4491 5536
Fax +45 4491 5369
The drawing shows the principles in Deep drawing.
Conventional drawing:
The slide and the die cushion are in their upper positions. The third cylinder is
in its lower position. A blank is fed into the tool. The slide starts to move down.
When the tool is reached, pressing speed is activated. The blank is formed by the
punch. The die cushion is used as a blank holder and the holding force can be adjusted
in different ways during the forming part of the sequence.
The slide returns to upper
limit . The third cylinder is used as an ejector and ejects the part out of the upper
tool. The die cushion lifts the finished part so it can be removed.
Hydroforming:
Hydroforming with pressure dome makes the impossible possible. It provides the ability
to form complex shaped parts, almost impossible to produce by conventional means.
The working principle is based on creating a pressure in a medium (fluid) in an enclosed
chamber.
The process utilizes the characteristics of the fluid always applying pressure
perpendicular to the material.
At the same time a blank holding force is applied in
the tool.
