Patent ID: 11883888
Assignee: KENNAMETAL INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A rotary cutting tool with enhanced bump-off capability, comprising:
a tool shank having a pocket;
a replaceable cutting head at least partially disposed within the pocket of the tool shank with an interference fit;
a coupling pin assembly at least partially received within a bore of the tool shank, the coupling pin assembly comprising a sleeve member and a coupling pin at least partially disposed within the sleeve member, the sleeve member including an upper portion and a lower portion extending radially outward with respect to the upper portion and having a non-circular cross-sectional shape with a bump-off surface, the coupling pin including an upper portion and a lower portion configured to make partial contact with the bore of the tool shank; and
an actuation screw for contacting the coupling pin assembly and causing the replaceable cutting head to move relative to the tool shank,
wherein the bump-off surface of the lower portion of the sleeve member extends radially outward with respect to the coupling pin by a distance, D, and contacts the actuation screw when moving the replaceable cutting insert from a clamped position to a bump-off position, thereby providing enhanced bump-off capability.