Method and apparatus for machining centering chamfers
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United States of America Patent
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-
Jun 11, 1991
Grant Date -
N/A
app pub date -
May 17, 1989
filing date -
May 17, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus are disclosed for determining a reference axis for a gear shaft about which the centering chamfers may be formed to facilitate the final machining of the remaining elements on the gear shaft. The invention includes the attachment of rolling path elements to either end of the shaft such that their positions may be laterally adjusted with respect to the shaft. A mandrel is located within the gear shaft and may extend from either end thereof. The assembly is placed in a rotatable device such that it is rotated about the longitudinal axis of the mandrel. While rotating, the positions of the rolling path elements are laterally adjusted such that their centers are coincident with the rotational axis. The mandrel is then withdrawn and the gear shaft, with the rolling path element still attached is placed in a grinding or dressing machine such that it is supported and rotated by the rolling path elements so as to rotate about their centers. The chamfer is finished machined as the device rotates.
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