Tool holder with coolant inducer

A tool holder adapted to supply a coolant to a tool therein, said holder comprising:

• a holder body having a drive shank at its upper end adapted for rotation by a machine and having an axially disposed tapered bore in its lower end,
• a pair of locking pins extending transversely of said tapered bore in said holder body and disposed on opposite sides of said tapered bore and each having a portion extending into said bore,
• a tool including a tapered shank adapted to mate with said tapered bore and having a pair of diametrically opposed flat surfaces thereon which clear said opposed locking pins upon entry of said shank into said bore, a pair of cam grooves extending circumferentially from the lower edge of said flat surfaces, respectively, and adapted to receive said locking pins upon rotation of said shank in a direction opposite to normal tool rotation and to urge said tapered shank into fluid-tight, drive transmitting engagement with said bore, whereby said engagement is continuously tightened by normal tool rotation during operation,
• a pair of locking cams in said body, a cam lock ring rotatably mounted on said body and coacting with said cams to cam them into engagement with said pair of flat surfaces, respectively, when said locking ring is turned from an unlocked position to a locked position, thereby maintaining said fluid-tight, drive transmitting engagement of the tapered shank with the tapered bore during rotative drive of said tool by said tool holder,
• a coolant inducer ring rotatably mounted on said holder body between said cam lock ring and said drive shank, a conduit fitting mounted on said coolant inducer ring,
• said coolant inducer ring and said holder body defining an annular chamber communicating with said conduit fitting, seal means disposed between the coolant inducer ring and said holder body to maintain said chamber fluid tight during relative rotation of said holder body and coolant inducer ring,
• a passage extending through said holder body from said chamber to the upper end of said tapered bore,
• said tool including a fluid passage at the upper end thereof opening into the upper end of said tapered bore and extending to the lower end of said tool whereby fluid coolant may be supplied from said fitting through said coolant inducer ring and said holder body to said tool during rotation thereof.