Drill chuck for percussion drilling

Details Drill chuck for percussion drilling Drill chuck for percussion drilling

B - Operations, Transporting

23

B

77/28

B23B 51/00 (2006.01) B23B 31/12 (2006.01) B25D 17/08 (2006.01)

Patent

CA 1208944

ABSTRACT OF THE DISCLOSURE A drill chuck usable in a drilling device capable of rotary or rotary-percussion drilling, includes radially adjustable clamping jaws with the clamping surfaces of the jaws directed inwardly towards the central axis of the chuck. Each clamping jaw has at least one projection extending radially inwardly from the clamping surface for engagement radially inwardly from the clamping surface for engagement in correspondingly shaped recesses in the shank of a drilling tool insertable into the chuck. The clamping surfaces form guide surfaces for the drilling tool so that the drilling tool is adequately guided over large surfaces extending in the axial and circumferential directions in the chuck.

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