公开(公告)号：US20230191513A1

公开(公告)日：2023-06-22

申请号：US17999560

申请日：2021-05-19

Applicant: FANUC CORPORATION

Inventor： Yasuhiro SHIBASAKI

IPC: B23G1/44 ,  G01M13/00

CPC classification number: B23G1/44 ,  G01M13/00 ,  B23G2240/52

Abstract: A tool diagnostic device includes a data acquisition unit configured to acquire, as waveform data, a state quantity of a motor for driving a tool before and after rotation of the tool stops in tapping, a reference waveform generation unit configured to generate reference waveform data, a difference waveform calculation unit configured to calculate, as difference waveform data, a difference between waveform data and the reference waveform data, a waveform feature calculation unit configured to calculate waveform feature data indicating a feature of a waveform from the difference waveform data, a learning result storage unit configured to store a learning result of learning a correlation between waveform feature data and a tool life, and a state diagnostic unit configured to diagnose a state of the tool based on the waveform feature data using a learning result.