Invention Grant
- Patent Title: Device for detecting decrease in rotational speed of cooling fan of machine tool
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Application No.: US15012187Application Date: 2016-02-01
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Publication No.: US09753456B2Publication Date: 2017-09-05
- Inventor: Yoshinori Hoshino , Taisei Fujimoto
- Applicant: FANUC Corporation
- Applicant Address: JP Yamanashi
- Assignee: FANUC CORPORATION
- Current Assignee: FANUC CORPORATION
- Current Assignee Address: JP Yamanashi
- Agency: Hauptman Ham, LLP
- Priority: JP2015-018582 20150202
- Main IPC: B23Q11/00
- IPC: B23Q11/00 ; G05B23/02 ; B23Q11/12
Abstract:
A machine tool including a cooling fan measures an input power source voltage to the machine tool and an input current to the cooling fan. If the measured current value is outside a predetermined current value range corresponding to the measured voltage value, the machine determines that the rotational speed of the cooling fan has decreased.
Public/Granted literature
- US20160223576A1 DEVICE FOR DETECTING DECREASE IN ROTATIONAL SPEED OF COOLING FAN OF MACHINE TOOL Public/Granted day:2016-08-04
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