A non-handle type tool chuck

Details A non-handle type tool chuck A non-handle type tool chuck

B - Operations, Transporting

25

B

B25B 13/44 (2006.01) B23B 31/12 (2006.01)

Patent

CA 2078034

In construction of a handle less tool chuck in which clamping torque is transmitted from a manually rotatable operation sleeve on a chuck body to tool clamping jaws in the chuck body via a power transmission unit including a cycloidal gear arrangement, an elastic impulsion sleeve is inserted between the operation sleeve and the chuck body so that elastic compressive deformation of the impulsion sleeve at forced rotation of the operation sleeve causes impulsive meshing engagement in the cycloidal gear arrangement to pose impulsive clamping force on a tool clamped by the jaws. Resultant clamping forces is twice or more as large as that provided by the conventional cycloidal gear arrangement only.

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