Patent Number: 6,305,696

Title: Tool holder for machine tool

Abstract: The tool holder for machine tool includes grip 10a on an outer circumference held on an automatic exchange of a cutting edge 8. A through hole 10b is in the longitudinal center. An internal thread (g) is on one end of through hole 10b, and a tool stopper 11 is screwed on internal thread (g). A through hole 11a is in the longitudinal center of tool stopper 11. A conical engaging body 10c is on the other end of through hole 10b, so that conical engaging body 10c protrudes outwards. The conical engaging body 11c connects with a tool shank taper (n) and a flanged end face (m) of a main spindle. A mist receiving tube 12 is on a connecting side of through hole 10b, and a through hole 12a is in the longitudinal center of the mist receiving tube 12. A communicating tube 14 is in the through hole 12a of mist receiving tube 12 and through hole 11a of tool stopper 11, so that communicating tube 14 bridges them to flow cutting oil directly thereinside. The communicating tube 14 can suitably slide in through hole 12a in accordance with motions of the tool stopper 11 due to the different length of cutting edge 8.

Inventors: Sugata; Shinsuke (Hiroshima-ken, JP), Kobayashi; Takashi (Hiroshima-ken, JP)

Assignee: Horkos Corporation

International Classification: B23Q 11/10 (20060101); B23B 31/20 (20060101); B23B 051/06 ()

Expiration Date: 10/23/2018