Chuck Having a Rotatable Securing Mechanism
AssigneeIscar, Ltd.
InventorHanoch Guy
Life of this patent
Estimating the term…
Abstract
A chuck for clamping an article has a receiving portion including a receiving bore having a longitudinal axis L, and a receiving bore inner surface. A clamping sleeve is accommodated in the receiving bore and is rotatable between a releasing position and a securing position. The clamping sleeve has a radially outwardly facing contoured clamping surface provided with one on more clamping segments, each clamping segment having a ramp between a trough and a crest, and a depression on the other side of the crest. Rotating the clamping sleeve within the receiving bore causes one or more rollers associated with each clamping segment to cooperate with the contoured clamping surface to effect the releasing and the securing of the article.
Claims20
A chuck for releasably securing an article comprising:
- a receiving portion comprising a receiving bore having a longitudinal axis L and a receiving bore surface;
- a clamping sleeve accommodated in the receiving bore and being rotatable between a releasing position and a securing position, the clamping sleeve comprising a contoured clamping surface having at least one clamping segment, the at least one clamping segment comprising a first ramp between a trough and a crest, and a second ramp between the crest and a depression, wherein the trough, crest and depression are respectively, at a trough distance DT, a crest distance DC and a depression distance DD, from the longitudinal axis L, wherein DT<DD<DC;
- and
- one or more rollers associated with said at least one clamping segment, the one or more rollers being accommodated between the receiving bore surface and the contoured clamping surface,
- wherein:
- when the clamping sleeve is in the securing position, a first roller of said one or more rollers is accommodated in the depression, and at least one of said one or more rollers applies a radially inwardly directed force against the contoured clamping surface;
- and
- when the clamping sleeve is in the releasing position, said first roller is not accommodated in the depression.
A chuck for releasably securing an article comprising:
- a receiving portion comprising a receiving bore having a longitudinal axis L and a receiving bore surface;
- a clamping sleeve accommodated in the receiving bore and being rotatable between a releasing position and a securing position, the clamping sleeve comprising a contoured clamping surface having a plurality of clamping segments, each clamping segment comprising a first ramp between a trough and a crest, and a depression formed on a far side of the crest, wherein the trough, crest and depression are respectively, at a trough distance DT, a crest distance DC and a depression distance DD, from the longitudinal axis L, wherein DT<DD<DC;
- and
- one or more rollers associated with each clamping segment, the one or more rollers being accommodated between the receiving bore surface and the contoured clamping surface,
- wherein:
- when the clamping sleeve is in the securing position, a first roller of said one or more rollers is accommodated in the depression of a corresponding clamping segment, and at least one of said one or more rollers applies a radially inwardly directed force against the contoured clamping surface;
- when the clamping sleeve is in the releasing position, said first roller does not occupy the depression;
- and
- when the clamping sleeve is rotated from the releasing position to the securing position, the first roller rides along the first ramp, passes over the crest, and enters the depression.
Dependencies are inferred from the claim text.