CUTTING EDGE POLISHING/FINISHING METHOD BY ELECTRIC-FIELD ABRASIVE GRAINS, METHOD OF PRODUCING MINUTE MEMBER WITH CUTTING EDGE, AND MINUTE MEMBER WITH CUTTING EDGE

Japanese Patent JP3906165

B2

PROBLEM TO BE SOLVED: To propose a cutting edge polishing/finishing method by electric-field abrasive grains, which polishes and finishes a cutting edge of a minute tool like a drill and an end mill, an injection needle, etc. to a high grade in a short period of time, and ensures a long life of the cutting edge; to propose a method of producing the minute member with the cutting edge; and to propose the minute member with the cutting edge.
SOLUTION: According to the cutting edge polishing and finishing method, the cutting edge of the minute member is set as a rotary electrode, and a rotary electrode surface plate having a machining pad attached to a surface thereof is arranged through mediation of a functional fluid which is prepared by dispersing the abrasive grains having a grain size of 0.1 to 30 μm and electrical dielectric property in a silicone oil having a viscosity of 1 to 1,000 cSt at 20°C, at a concentration of 1 to 50 wt.%. Then an alternating electric field is impressed on the abrasive grains at electric field strength of ± 0.3 to 5 kV/mm and a frequency of 0.1 to 30 Hz, and the minute tool is rotated while a machining surface pressure is applied to the same, to thereby polish and finish the cutting edge.

Takahashi Yusuke
Yoichi Akagami

JP2003043990A

April 18, 2007

February 21, 2003

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Akita
Kyowa Seiko Co., Ltd.

B23H5/08; B24B3/06; B24B37/00; (IPC1-7): B24B37/00; B24B3/06; //B23H5/08

JP2000343414A
JP2000190185A
JP2002144221A
JP9108948A
JP2002075926A

Kenzo Fukuda
Shinichi Fukuda
Takemichi Fukuda

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