Tool detection system
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United States of America Patent
Stats
-
Mar 12, 1985
Grant Date -
N/A
app pub date -
Nov 17, 1982
filing date -
Nov 17, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for detecting the presence of a tool in a spindle which can be used where automatic unattend operation occurs and it must be known that a tool is in the spindle. For example, if the tool changer on a machining center dropped a tool when transferring it from a magazine to a spindle the machine would continue to operate but machining would not occur. In the invention, air pressure is supplied to a point through a series of holes in the spindle and if a tool is present in the spindle, it will prevent air from escaping. If the tool is absent, air will escape from the spindle or when the tool is not properly seated in the taper of the spindle which will cause the air pressure to drop and to stop the spindle motor and/or provide a suitable indication and warning to the operator.
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