Chuck mechanism
AssigneeKitagawa Iron Works Co., Ltd.
InventorTamio Nishimiya
Life of this patent
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Abstract
A chuck mechanism of the present invention includes multiple master jaws placed movably in a radial direction on a front surface of a chuck body, and top jaws each detachably attached to front surfaces of the top jaws. Each master jaw and each top jaw have a raised portion and a recessed portion engageable with each other. Each of the raised and recessed portions has conical surfaces formed by part of a conical body. Each top jaw has a gripping surface formed by part of a circular columnar body. Upon work gripping, the center axes of the conical surfaces on a gripping side among the conical surfaces of each master jaw and each top jaw and the center axis of the gripping surface are all coincident with a rotation axis of the chuck body.
Claims12
A chuck mechanism comprising:
- a chuck body;
- multiple master jaws placed movably in a radial direction on a front surface of the chuck body;
- and
- top jaws each detachably attached to front surfaces of the master jaws,
- wherein
- each master jaw and each top jaw have, at portions facing each other in an axial direction, a raised portion and a recessed portion engageable with each other,
- each of the raised and recessed portions has, at both end portions in the radial direction, conical surfaces formed by part of a conical body,
- each top jaw has a gripping surface provided for gripping a work and formed by part of a circular columnar body, and
- upon work gripping, center axes of conical surfaces on a gripping side among the conical surfaces of each master jaw and each top jaw and a center axis of the gripping surface are all coincident with a rotation axis of the chuck body.
Dependencies are inferred from the claim text.