Yoshiya Katsu

US Patent:

20130061726, Mar 14, 2013

Filed:

Sep 12, 2011

Appl. No.:

13/230770

Inventors:

Yoshiya Katsu - Florence KY, US
Koichi Kawamura - Florence KY, US
Jimmie Couch - Burlington KY, US
Mark Hadley - Union KY, US

International Classification:

B23B 23/00
B23B 29/24
B23B 21/00
B23B 3/22
B23B 1/00

US Classification:

82 111, 82148, 82121

Abstract:

A machine tool apparatus and method for exterior and interior cutting operations on a workpiece is provided. In one form, the machine tool apparatus has a common support assembly with a tailstock and a boring tool holder mounted thereto. The common support assembly has a common support carriage that is mounted to a machine base for travel along a longitudinal axis parallel to a central axis of the workpiece. The tailstock and boring tool holder are mounted to a mounting base portion for travel transverse to the workpiece central axis. In one form, a turret having external cutting tools is separate from the boring tool holder and mounted to the machine base for performing external cutting operations on the workpiece. This separate mounting allows the turret to machine the exterior of the workpiece while also permitting a longer boring tool to perform deep internal cutting operations on the workpiece.