Method and apparatus for testing a spindle in a disc drive
AssigneeSeagate Technology LLC
InventorJohn W. Elsing
Life of this patent
Estimating the term…
Abstract
A method and apparatus are used for testing a spindle which is used to support a disc pack for rotation in a disc drive. The test apparatus is removably coupled to the spindle. The current apparatus defines a test surface and has an outer periphery greater than an outer periphery of the spindle. A measurement device is placed proximate the test surface at a location radially displaced from the spindle. A distance between the test surface and the measuring device is measured with a measuring device during rotation of the spindle and the test apparatus.
Claims8
A method of testing a spindle used to support a disc pack for rotation in a disc drive, the method comprising the steps of:
- removably coupling a test apparatus to the spindle, the test apparatus defining a test surface and having an outer periphery greater than an outer periphery of the spindle;
- placing a measurement device proximate the test surface at a location radially spaced from the outer periphery of the spindle;
- and
- measuring a distance between the test surface and the measurement device with the measurement device during rotation of the spindle and the test apparatus.
A system for testing a spindle used to support a disc pack for rotation in a disc drive, the system comprising:
- a first generally annular member;
- a second generally annular member removably coupled to the first generally annular member, the first and second generally annular members defining a bore;
- a resilient sleeve, sized to fit in the bore and to receive the spindle therein, one of the first and second annular members defining a test surface and the first and second generally annular members having sleeve contacting portions configured to exert an increasing force on the sleeve as the first and second annular members are brought axially closer to one another;
- and
- a measurement device positioned proximate the test surface at a position radially displaced outwardly from the outer periphery of the spindle.
Dependencies are inferred from the claim text.