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US 2008/0156507 A1Published application
Drill Tool
AssigneeMax Co., Ltd.
InventorsTakuma Nonaka, Naohide Murakami
Life of this patent
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Abstract
A drill tool is provided with: a drive source accommodated in a tool body 2; a bit drive shaft 3 which is rotation-driven by the drive source and provided projectingly from a front end of the drill body 2; and a diamond bit 4 attached to a front end of the bit drive shaft 3. Further, the drill tool is provided with a vibrating apparatus which generates vibrating force which acts in the axial direction of the bit drive shaft 3, a magnitude of which pulsates, and vibrating moment which acts in the rotational direction of the bit drive shaft 3, a magnitude of which pulsates.
Claims6
A drill tool comprising:
- a drive source accommodated in a tool body;
- a bit drive shaft rotation-driven by the drive source and projecting from a front end of the drill body;
- a diamond bit attached to a front end of the bit drive shaft;
- and
- a vibrating apparatus configured to generate vibrating force in an axial direction of the bit drive shaft and vibrating moment in a rotational direction of the bit drive shaft, wherein a magnitude of the vibrating force pulsates and a magnitude of the vibrating moment pulsates.
2 more elements
Dependencies are inferred from the claim text.