Title:
DEBURRING METHOD FOR YOKE COMPONENT OF VOICE COIL MOTOR FOR HARD DISK DRIVE AND VOICE COIL MOTOR
Document Type and Number:
Japanese Patent JP3669415
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To remove the burrs existing on all ridge lines including the finely worked portion of a yoke component reliably and efficiently by applying barrel polishing then magnetic polishing to the yoke component of a low-carbon steel generating burrs.
SOLUTION: Burrs 11, 12 protruded outward along the penetrating direction of a through hole 2 have roots larger than tips and cannot be removed by only magnetic polishing. When barrel polishing is applied to a yoke component 1 in above burr state, an abrasive material 3 collides with the burrs 11, 12 and pushes the burrs 11, 12 inward (in the direction of the through hole 2). Although the burrs 11, 12 are not removed by the barrel polishing, they are rolled, and their roots are made fine. Since the roots of the burrs 11, 12 are made fine by the barrel polishing, the burrs 11, 12 are removed by the magnetic polishing when it is applied, then chemical polishing is applied.
Inventors:
Ryo Osugi
Arikawa Setsu
Nobutaka Kobayashi
Arikawa Setsu
Nobutaka Kobayashi
Application Number:
JP25414699A
Publication Date:
July 06, 2005
Filing Date:
September 08, 1999
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd.
International Classes:
B24B31/00; B24B37/00; H02K15/02; (IPC1-7): B24B31/00; B24B37/00
Domestic Patent References:
| JP10180611A | ||||
| JP62188667A |
Attorney, Agent or Firm:
Takashi Kojima
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa
Saori Shigematsu
Katsunari Kobayashi
Takeshi Ishikawa