Title:
MACHINE TOOL MONITORING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/053837
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a machine tool monitoring system which estimates a tool state with a high degree of accuracy from a signal in which the influence of external disturbances is suppressed. To this end, the monitoring system is provided with: a machine tool provided with a main shaft motor for rotating a tool which machines a workpiece, a perpendicular direction motor for moving the tool or the workpiece in the direction of the axis of rotation of the tool, and a horizontal direction motor for moving the tool or the workpiece in a direction perpendicular to the axis of rotation of the tool; and a tool degradation state estimating device which estimates a state of degradation of the tool on the basis of operation information of the main shaft motor when the machine tool is machining the workpiece using the tool; wherein the tool degradation state estimating device estimates the state of degradation of the tool on the basis of the operation information when the tool is in a no-load process or when the tool in a vertical machining process, and does not estimate the state of degradation of the tool on the basis of the operation information when the tool is in a horizontal machining process.
Inventors:
NAKAMURA AKIHIRO (JP)
DEGUCHI KENTA (JP)
DEGUCHI KENTA (JP)
Application Number:
PCT/JP2017/033242
Publication Date:
March 21, 2019
Filing Date:
September 14, 2017
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B23Q17/09; B23C9/00; B23K20/12; B23Q17/00; G05B19/18
Foreign References:
| JPH0436634A | 1992-02-06 | |||
| JPH08323584A | 1996-12-10 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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