公开(公告)号：JPH0230459A

公开(公告)日：1990-01-31

申请号：JP17768688

申请日：1988-07-15

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KOZUKA AKISUKI ,  HORI KIMISADA ,  SATO TERUYUKI ,  MATSUDA AKIRA ,  KUBO KATSUJI

IPC: B23Q17/09 ,  B23Q17/20

Abstract: PURPOSE:To effectively use a tool and to constrain a defective work in the min. number by detecting the wear of a tool based on the radius variation and surface roughness variation of the body to be cut. CONSTITUTION:Cutting is executed by bringing a probe 1 into contact with the cutting face of the body 7 to be cut and the movement of this probe 1 is detected by a sensor 2. From the output signal of this sensor 2 the signal of the low frequency component showing the averaged diameter variation of the body to be cut and the signal of the high frequency component showing the variation corresponding to the surface roughness are separated by a filter. The wear of a tool is detected based on these signals.