Title:
切削ブレードの状態検知方法
Document Type and Number:
Japanese Patent JP7370256
Kind Code:
B2
Abstract:
The present invention is to detect a through hole formed in a cutting edge in addition to a defect. According to the present invention, a cutting blade state detecting method comprises: a voltage recording step of recording the change in voltage value by penetrating a cutting edge from a position where the cutting edge does not block the pulse light received by a light receiving unit while rotating a cutting blade to record the change in voltage; and a determination step of judging the state of the cutting edge from the change in the voltage value recorded in the voltage recording step. In the determination step, if there is no increase in the voltage value, it is determined that there is no defect in the cutting edge, and when a periodic and temporary voltage increase occurs immediately after the blocking of the pulse light by the cutting edge is started, it is determined that the cutting edge is defective.
Inventors:
Takeshi Kasai
Ayako Koike
Ayako Koike
Application Number:
JP2020001052A
Publication Date:
October 27, 2023
Filing Date:
January 07, 2020
Export Citation:
Assignee:
Disco Co., Ltd.
International Classes:
B24B49/12; B24B27/06; H01L21/301
Domestic Patent References:
| JP2006287111A | ||||
| JP2002370140A | ||||
| JP2018158413A | ||||
| JP2001298001A |
Foreign References:
| CN101402227A |
Attorney, Agent or Firm:
Sakai International Patent Office
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