Vibration motor and method of machining a vibration member there

Abrading – Abrading process

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451 47, B24B 1902

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054455561

ABSTRACT:
A vibration member of a vibration motor and a method of machining the vibration member to form grooves therein. The bottom of each groove has the shape of an arc of a circle whose center is located on the side of a contact member, e.g., a rotor, so that burrs formed when the vibration member is machined are curved in a direction away from the base portion of the vibration member, i.e., toward the contact member side, and so that the burrs can be easily removed by barrel finishing.

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patent: 4763148 (1988-08-01), Tsukimoto et al.
patent: 4793101 (1988-12-01), Dloumy et al.

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