APPARATUS FOR SUPPLYING CUTTING LIQUID TO DEEP HOLE DRILLING MACHINE Russian patent published in 1997 - IPC

FIELD: machine tool manufacture. SUBSTANCE: apparatus has casing 1 positioned in spindle unit of machine and incorporating immovable sleeve 2 and jig bushing 3 whose one end is connected through oil header 4 with cutting liquid supply channel 5 and other end is faced to part 6 under treatment and is provided with annular step 7 including spherical supporting conical surface "a", which is normally retained in contact with supporting conical surface "b" of sleeve 8 by springs 9 equally spaced one with respect to the other along periphery on pivotal tie-rods 10 in sleeve 8. Jig bushing 3 is movable by lever 11 to part. Sleeve 8 has end normally extending above end of jig bushing 3 to define together with bushing 3 receptacle for sealing ring 12. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 dwg