Other

Toyoda Koki Kabushiki Kaisha

Toshimichi Moriwaki

Eiji Shamoto

Makoto Matsuo

Akira Tsuboi

Yukio Maeda

Norikazu Suzuki

An elliptical vibratory cutting apparatus includes a control mechanism which applies a sinusoidal voltage having a predetermined phase difference to piezoelectric elements. Flexure vibrations are accordingly generated in X and Y directions. The vibrations in the X direction cause interference with the vibrations in the Y direction and vice versa. An amount of interference, caused by vibrations in one direction, with vibrations in another direction, is correctively eliminated by the control mechanism (interference eliminating unit. A workpiece is thus cut by means of a cutting tool through elliptical vibrations with high precision.

Method of controlling elliptical vibrator

A workpiece is cut by a cutting tool that is attached to a cylindrical support body vibrated by at least two piezoelectric drive elements. The efficiency of the mechanical vibration is improved by attaching the piezoelectric drive elements to a cylindrical body portion ( ) of the tool support body ( ) and by providing the support body with a plurality of necked-down end sections. At least the cylindrical body portion ( ) is a cylinder with a substantially circular cross-section or with a circular cross-section to provide a constant or a substantially constant bending rigidity of the cylindrical tool support body.

Elliptical vibration cutting method and elliptical vibration cutting apparatus

Herein disclosed is a feed system which comprises: a moving body; a plurality of sets of support blocks arranged at the two sides of the moving body and along the moving direction of the moving body; a plurality of clamping members supported through elastically deformable members by the respective sets of the support blocks to engage with the sides of the moving body; clamping actuators mounted on the individual sets of the support blocks for displacing the clamping members toward the sides of the moving body to clamp the moving body; moving actuators mounted on the individual sets of the support blocks for displacing the clamping members in the moving direction of the movable member; and control means for operating the clamping actuators and the moving actuators with phases offset from each other.

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Hyogo, Japan

Toshimichi Moriwaki