Tool bit and tool bit chuck for manually operated tools

摘要

The smallest radial distance (r) of the spline faces (4a) running radially to the centre (z) of the shank (1) is greater than half the diameter (d) of the shank. In the body of the tool adjacent to shank are splines (4) having an open end towards the shank and lying outside the diameter of the shank. The spindle has a socket bush (8) with a corresponding internally splined region (5) and an interior bore (6) with driving and locking members (9, 11) for the tool shank. The splines (4) of the tool engage in the socket and allow high torques to be transmitted.