Chuck tool and bits

摘要

A tool arrangement and chuck apparatus for quick change of a range of tools; particularly, a quick change chuck adapted to engage various diameter drill bits, tools and tool holders. The tools are rotatable in a chuck or adaptor and have at one end a centering shaft portion having a constant diameter for multiple tool end diameters and shapes, a drive shoulder portion and a lock portion. The chucks have a tool centering arrangement for accommodating the constant diameter centering shaft. The chucks are also described as having tool bit release mechanism operable to disengage the tool from a retention mechanism when a force is applied inwards of the body of the chuck by the user to allow the tool bit to be removed longitudinally from the chuck but also arrange to allow the tool bit to be inserted longitudinally into the chuck without requiring any other user operation.

主权项

1. A chuck for use with a drill bit wherein the chuck comprises:
a body; a drill bit centering arrangement; a drill bit retention arrangement; and wherein the drill bit comprises: a drill bit body having at a first end a cutting face associated with a drilling portion of the drill bit body; and at a second end having at least one of the following in any order:
a centering shaft portion having a constant diameter for multiple drilling portion diameters;a drive shoulder portion; anda lock portion; wherein the chuck's drill bit centering arrangement accommodates the constant diameter centering shaft portion of the drill bit, wherein the drill bit is aligned with the axis of rotation of the chuck to minimize run-out; and wherein the drill bit retention arrangement is adapted to engage with the lock portion of the drill bit preventing relative longitudinal movement between the drill bit and the body of the chuck; and wherein the chuck further comprises: a drill bit release mechanism associated with the drill bit retention arrangement operable to disengage the drill bit from the drill bit retention arrangement when a force is applied inwards of the body by a user of the chuck and drill bit, to allow the drill bit to be removed longitudinally from the chuck.