Machine having an air bearing and method for operating such a machine
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United States of America Patent
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Nov 26, 2013
Grant Date -
Jul 18, 2013
app pub date -
Jul 19, 2012
filing date -
Jan 21, 2010
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Abstract
A machine has a frame structure for moving a machine head in one or more spatial directions. The frame structure comprises an actuator and an air bearing for moving the head. The machine also comprises a compressed air feed connected to the air bearing for providing a compressed air flow. A restrictor defines the compressed air flow to the air bearing. The machine has a first operating state, in which a high compressed air flow is defined and in which the actuator can be actuated. The machine has a second operating state, in which a compressed air flow lower than the high compressed air flow is defined. In the second operating state, the actuator is secured against actuation from a closed-loop position controller, while the closed-loop position controller is maintained in operation.
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