Robert Boschgmbh

Bosch Rexroth Ag

Johannes Rauch

Martin Schoepf

Bertram Amrhein

Lukas Loeber

Hannes Willeck

Benjamin Seitz

Matthias Rustler

A method is described for manufacturing a three-dimensional product, in particular a hydraulic element, the method encompassing at least the following method steps: Providing a first section of the product to be manufactured, which includes at least one first connection point for a second section of the product to be manufactured; and producing the second section by an additive manufacture in which the at least one first connection point of the first section is used as a substrate for the additive manufacture of the second section.

Method for manufacturing a three-dimensional product

There is disclosed a pilot valve, especially for a servo valve, comprising an actuating motor and a hydraulic preamplifier via which a control pressure difference can be created that acts upon a main slide of a main stage. According to the invention, a blocking mechanism is embodied in the flow path of the control oil. A control duct that is connected, either directly or via a branch, to a control chamber of the main stage can be blocked by manually actuating said blocking mechanism, while the other control duct remains open. The other control duct can be blocked by actuating the blocking mechanism in the opposite direction while the first control duct remains open. A control pressure difference by means of which the main slide can be displaced into a predetermined position can be created manually by actuating said blocking mechanism.

Pilot valve

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Neuendorf, Germany

Johannes Rauch