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.

公开(公告)号：JPH0835070A

公开(公告)日：1996-02-06

申请号：JP19208594

申请日：1994-07-22

Applicant: AGENCY IND SCIENCE TECHN

Inventor： USHIKI KENICHI ,  SATO TERUYUKI

IPC: B01J19/08 ,  C23C16/442 ,  C23C16/50

Abstract: PURPOSE:To uniformly reform particle surfaces at a low cost by adopting a chemical vapor deposition method by low-energy plasma at the time of subjecting the surfaces of powder particles to a reforming treatment by the films formed of the products obtd. by an electric discharge reaction of gaseous raw materials. CONSTITUTION:The powder raw material to be reformed is fed from an upper feed port 18 into a blind vessel 8. Simultaneously, a gaseous mixture composed of vapor of a metal alkoxide, etc., reactive gases, such as hydrogen and oxygen, and carrier gas, such as Ar, is supplied into this vessel 8 from a gaseous raw material introducing port 1 of a discharge reactor section 9. Voltage is impressed between the anode 2 and cathode 3 of the discharge reactor section 9 by a DC power source 13 to generate an electric discharge. Molecular films and particle films are formed on the surfaces of the powder particle 5 by the reaction formed gases contg. the solid moleculars and clusters, etc., of metal oxides from the gaseous raw materials by the discharge reaction, by which the powder particles are reformed. In such a case, the powder raw material passes a circulating flow section 21 consisting of an ascending passage 22 and descending passage 23 of the gaseous raw materials formed by a partition wall 7 in the blind vessel 8 and, therefore, the uniform surface.treatment is effectively executed as the materials always come into contact with fresh reatant gases formed by plasma discharge.