Vertical type of double disc surface grinding machine for a brake disc
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United States of America Patent
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Aug 23, 2005
Grant Date -
Jan 22, 2004
app pub date -
May 16, 2003
filing date -
Jul 18, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A vertical type of double disc surface grinding machine of the present invention comprises a clamp device which can clamps and holds a work like a brake disc at a correct clamping position under a stable state even when a configuration of a work upper surface is complicated. This machine is equipped with a pair of upper and lower grinding wheels, a work holding jig which is self rotatable, and said clamp device. The clamp device is equipped with a clamp unit freely rotatable through a bearing onto a clamp rod of an elevator actuator. The clamp unit is equipped with a steel ball contacting with a central concave portion of a work upper surface.
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