초록 ▼

An anode drive assembly for use in an x-ray tube having a rotating anode is disclosed. The anode drive assembly is comprised of a bearing assembly that provides rotational support to a rotor assembly. The rotor assembly is connected to the rotating anode, and rotation is induced in the rotor by way

An anode drive assembly for use in an x-ray tube having a rotating anode is disclosed. The anode drive assembly is comprised of a bearing assembly that provides rotational support to a rotor assembly. The rotor assembly is connected to the rotating anode, and rotation is induced in the rotor by way of an inductive motor. The bearing assembly is interconnected with the rotor assembly via a bearing hub. The bearing hub is comprised of a material having a coefficient of thermal expansion (CTE) that is intermediate to that of the components connected directly to the anode, and to the bearing shaft component. This provides a gradual transition in CTE along the conductive path between the anode and the bearing shaft so as to reduce the occurrence of thermal expansion rate disparities between adjacent components.

대표청구항 ▼

1. An anode drive assembly for use in connection with an x-ray tube having a rotating anode target, the anode drive assembly comprising:a target rotor connected to the anode target via a shaft portion that is comprised of a material having a first predetermined coefficient of thermal expansion; a be

1. An anode drive assembly for use in connection with an x-ray tube having a rotating anode target, the anode drive assembly comprising:a target rotor connected to the anode target via a shaft portion that is comprised of a material having a first predetermined coefficient of thermal expansion; a bearing shaft rotationally supported by a bearing surface, the bearing shaft being comprised of a material having a second predetermined coefficient of thermal expansion; and a bearing hub that interconnects the bearing shaft with the target rotor, wherein the bearing hub is comprised of a material having a coefficient of thermal expansion that is intermediate to the first and the second predetermined coefficient of thermal expansion, the bearing hub further comprising: a radially extending flange portion including at least one raised portion extending from the flange portion, wherein the target rotor and the bearing hub directly contact one another at the at least one raised portion.