Development of pneumatic switching valves based on 3D screen printing
Research Task/Objectives
Pneumatic switching valves are complex and inexpensive components that are manufactured in large numbers. Therefore, with regard to small geometric dimensions, the actual manufacturing process is expensive. Due to the development towards miniaturized valves with high power density and low manufacturing costs, alternative manufacturing processes become more important. Only 3D screen printing enables the production of multi-material systems, which are required for the valve actuators.
The objective of this research project is the analysis of possibilities and potentials to use
3D screen printing for manufacturing pneumatic switching valves.
Approach/Results
At first, the parameter definitions and requirements of the printed switching valve
have to be formulated. On this basis, design and structure of suitable switching valve constructions are analyzed. In this process an overall design concept of the valve is developed, which consists of the actuator, an armature spring assembly and the fluid part. More over, suitable material combinations for the components are chosen, and their process parameters as well as resulting material parameters after printing and heat treatment will be characterized. The final dimensioning is done by using different
simulation tools, and the valve components will be manufactured. The suitability of
these components is verified experimentally.
Processsteps of 3D screen printing and development process of the printed switiching valve
The presented research activities are part of the project "Development of Pneumatic Switching Valves based on 3D-Screen-Printing" (Ref. No. 703321). The authors would like to thank the Fluid Power Research Fund of the VDMA for the funding and support.