Method and equipment for surface-hardening treatment of steel balls for a ball bearing
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United States of America Patent
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Sep 14, 1999
Grant Date -
N/A
app pub date -
Apr 3, 1998
filing date -
Jul 1, 1997
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Abstract
An apparatus for surface-hardening steel balls includes a container having projections protruding inwardly from and extending longitudinally along an inner wall; a support shaft having projections extending outwardly from and longitudinally along the support shaft; a container driving mechanism which rotates the container in one direction; and a support shaft driving mechanism which rotates the support shaft in an opposite direction. In operation, the container's projections transfer the balls from a lower portion of the container to a higher portion where the balls are dropped to the lower portion while the support shaft's projections strike the steel balls when the steel balls are dropping to the lower portion.
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