A Dutch SME is specialized in the deep drawing technology.
Deep drawing is a process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. The material will deform, with the advantage that the overall wall thickness will stay the same. With this process it is possible to create different kinds of 3 dimensional shapes out of different kinds of metal. Depending on the complexity of the product one or more deep drawing steps are needed. Deep drawing is a very cost effective method for producing small parts with accuracy, great speed and in high volumes.
A simple deep draw tool is based on 3 different parts. The die, punch and blank holder. The die has the same dimensions as the outside of the desired product. The punch, which as an opposite shape, is used to press the material into the die. The blank holder is used to keep the material flat and prevent wrinkling.
The starting material also called the blank is placed on the die and clammed by the blank holder with a predefined force. This force is enough to prevent wrinkling, but still gives the material the possibility to flow inwards. The punch then presses the blank into the die, where at the end a product is formed.
Many people mix-up deep drawing with stretch forming. However there is a fundamental difference between both techniques. With stretching the blank is being clamped and pressed in the die with a punch. The material doesn’t flow into the die, but it stretches what makes the material thinner. With deep drawing the material is also clamped. However this is done with a predefined force, which gives the material the possibility to flow into the die. At the moment the material flows inwards, the blank diameter reduces which gives a compression perpendicular to the pulling direction. This stretch in the length and compression in the width equalizes each other. Therefore the material theoretically doesn’t change in thickness. This gives an three-dimensional end product with an equal wall thickness.
The Dutch SME also is specialized in micro deep drawing of thin metals sheets or foils. With micro deep drawing it is possible to manufacture products with an accuracy in the micron range.
The Dutch SME looks for a partner that has the development, engineering and industrialization expertise to come to the development of the next generation of micro deep drawing.
The Dutch SME is interested in commercial agreements with technical assistance with experts or specialists on the micro deep drawing technology.
The Dutch SME already started building up expertise, but wants to move the limits and come to next generation solutions with accuracies in the micron range.