Radial grinding wheel for machining center having impeller for directing through-spindle coolant to the work surface of the tool

A radial grinding tool for a machining center comprising a through-spindle coolant (TSC) system, the radial grinding tool comprising:

• a main body comprising a central longitudinal axis, a spindle extending along the central longitudinal axis and having an end, a disc-shaped wheel member located at the end of the spindle and comprising an upper side adjacent to the end of the spindle, a lower side opposite to the upper side and a working surface, and a passageway extending through the main body terminating at an opening on the lower side of the disc-shaped wheel member and configured to accommodate coolant flowing from the TSC system along the central longitudinal axis;
• and
• an impeller attached to the main body at the lower side of the disc-shaped wheel member, the impeller comprising a plurality of vanes positioned radially about the central longitudinal axis, each vane of the plurality of vanes comprising a functional surface configured to impart a force on the coolant exiting the opening of the passageway;
• wherein the working surface is located at an outer periphery of the disc-shaped wheel member and comprises an outer circumferential surface of the disc-shaped wheel member;
• and
• wherein at least a portion of the functional surface is located vertically lower than the working surface of the disc-shaped wheel member as measured in a direction along the central longitudinal axis.