Element and method for compensation of tolerances and/or gap widths of a device and engine, assembly method for a shaft/hub connection
AssigneeUniversität der Bundeswehr München
InventorsAndreas Hupfer, Niels Herter
Life of this patent
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Abstract
An element for compensation of tolerances and/or gap widths of a device, having a main body which has at least one annular cross-sectional portion, wherein the cross-sectional portion has, in its peripheral direction, at least one auxetic portion which exhibits auxetic behavior in a radial direction of the main body. The invention also relates to an engine which comprises the element, to an assembly method for a shaft/hub connection which has at least one element, and to an adaptation method for adapting a tolerance and/or a gap width in the engine.
Claims15
A device, comprising:
- an element for compensation of tolerances and/or gap widths of the device, including:
- a main body which comprises at least one annular cross-sectional portion, wherein the cross-sectional portion comprises, in its peripheral direction, at least one auxetic portion which exhibits auxetic behavior in a radial direction of the main body;
- and
- a control unit, configured to control an application of pressure to the element.
An assembly method for a shaft/hub connection, wherein:
- the shaft/hub connection comprises a shaft and a hub,
- the shaft and/or the hub is configured as an element for compensation of tolerances and/or gap widths of a device, the element comprising a main body which comprises at least one annular cross-sectional portion,
- the cross-sectional portion comprises, in its peripheral direction, at least one auxetic portion which exhibits auxetic behavior in a radial direction of the main body, and
- the assembly method comprises the following steps:
- a first step, in which pressure is applied to the shaft configured as the element and/or to the hub configured as the element, along a longitudinal extension direction of the main body;
- a second step, in which the shaft is introduced into the hub;
- a third step, in which the application of pressure to the shaft and/or to the hub is stopped.
An adaptation method for adapting a tolerance and/or a gap width in an engine, wherein:
- the engine comprises an element for compensation of tolerances and/or gap widths of the engine, the element comprising a main body which comprises at least one annular cross-sectional portion,
- the cross-sectional portion comprises, in its peripheral direction, at least one auxetic portion which exhibits auxetic behavior in a radial direction of the main body, and
- the element is configured as a housing of a fan stage and/or of a compressor and/or of a turbine,
- said method comprising the step of:
- actively applying pressure to the housing such that the tolerance and/or the gap width between a blade of the fan stage and/or of the compressor and/or of the turbine, and the housing increases or decreases.
Dependencies are inferred from the claim text.