Tool holder for monitoring tool service time
First Claim
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1. A tool holder holding a tool and replaceably attached to a main spindle of a machine tool, said tool holder comprising:
- a body holding said tool;
sensor means provided in said body for detecting whether or not said tool is used in a machining operation;
counter means provided in said body for counting time cumulatively during the time when the output signal from said sensor means indicates that said tool is used, and for storing said cumulatively counted time as service time;
output means provided in said body for outputting said service time held in said counter means to an outside circuit; and
reset switch means provided on said body for resetting said counter means, whereby said counter means may be reset when said tool is reground or replaced.
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Abstract
A tool holder for monitoring the service time of a tool holded on the tool holder is disclosed. A sensor and electric circuit are provided for determining whether or not the machining operation with the tool is executed. Counters are provided for counting time cumulatively during the time when the machining operation is executed, and store the cumulative time as the service time of the tool. The service time is output to a numerical control apparatus via an output device.
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Citations
4 Claims
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1. A tool holder holding a tool and replaceably attached to a main spindle of a machine tool, said tool holder comprising:
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a body holding said tool; sensor means provided in said body for detecting whether or not said tool is used in a machining operation; counter means provided in said body for counting time cumulatively during the time when the output signal from said sensor means indicates that said tool is used, and for storing said cumulatively counted time as service time; output means provided in said body for outputting said service time held in said counter means to an outside circuit; and reset switch means provided on said body for resetting said counter means, whereby said counter means may be reset when said tool is reground or replaced. - View Dependent Claims (2, 3, 4)
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Specification