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Distance control in 3D printing

Micro laser sintering is a method of additive manufacturing where a high-energy laser selectively melts and fuses fine metal powder into layers, based on a digital file. This is known as industrial 3D printing. During the process, a powder layer is applied and a squeegee is used for pulling off to the correct thickness. Then, the powder is melted in the component section followed by lowering the construction platform.

To ensure that the squeegee is in the right position, the system uses four CSE05(01) capacitive sensors to detect the distance and tilt angle of the squeegee to the base. Moreover, to inspect the planarity of the descending construction platform, three CS02 sensors are used. These sensors from Micro-Epsilon are well suited for this application due to their robustness and exchangeability.


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