# US 9,039,588 B2 · Combination machining lathe

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- Number: US 9,039,588 B2
- Document ID: US9039588B2
- Status: Granted
- Kind: B2
- Application number: 12/581,504
- Filed: 2009-10-19
- Published: 2010-04-29
- Granted: 2015-05-26
- Earliest claimed: 2008-10-28
- Assignees: Okuma Corporation
- Applicants: Takaharu Ito; Kouta Ashiuchi; Norio Kamegai; Noriyoshi Ito; Takuya Kato
- Inventors: Takaharu Ito; Kouta Ashiuchi; Norio Kamegai; Noriyoshi Ito; Takuya Kato
- Web page: https://patentgrep.com/patent/US9039588B2

## CPC

- B23Q 3/1574: {the axis of the stored tools being arranged perpendicularly to the rotating or circulating plane of the storage means}
- B23B 3/06: Turning-machines or devices characterised only by the special arrangement of constructional units (B23Q37/00 takes precedence; such features of general applicability B23Q)
- B23B 3/065: {Arrangements for performing other machining operations, e.g. milling, drilling}
- B23B 11/00: Automatic or semi-automatic turning-machines incorporating equipment for performing other working procedures, e.g. slotting, milling, rolling {(B23B3/065 and B23B3/16 take precedence; machines incorporating a plurality of sub- assemblies, each capable of performing a metal-working operation, the sub-assemblies being arranged to operate simultaneously at different stations B23Q39/04)}
- B23P 23/02: Machine tools for performing different machining operations (lathes, e.g. capstan lathes, B23B; combined horizontal boring and milling machines B23B39/02)
- B23Q 3/15573: {the tool being taken from a storage device and transferred to a tool holder by means of transfer devices}
- B23Q 3/15713: {a transfer device taking a single tool from a storage device and inserting it in a spindle (B23Q3/15793 takes precedence)}
- Y10T 29/5114: Lathe and tool
- Y10T 82/2502: with program control
- Y10T 82/2506: And tool turret
- Y10T 82/2508: with tool turret
- Y10T 82/2531: Carriage feed
- Y10T 483/1705: Tool support comprises rotary spindle
- Y10T 483/1707: Tool having specific mounting or work treating feature
- Y10T 483/1714: Tool changer between tool support and matrix
- B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23B: TURNING; BORING (arrangements for copying or controlling B23Q)
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

In a combination machining lathe, a workpiece holding device holds a workpiece in a manner that permits the workpiece to rotate around an axis parallel to a direction of a horizontal Z axis. A tool post holds a tool that comprises a holder and a bit. The tool held by the tool post is indexed to a position in which the longitudinal axis of the holder is parallel to an X axis direction. The bit of the tool held by the tool post is angled such that a longitudinal axis of the bit is disposed in a position tilted away from the X axis direction closer to a horizontal axis in a plane containing the X axis and the Y axis. A turning operation is performed while the tool and/or the workpiece are moved relative to each other in a direction of the longitudinal axis of the bit.

## Claims

### Claim 1

A combination machining lathe comprising:
a workpiece holding device configured to hold a workpiece in a manner that permits the workpiece to rotate around an axis parallel to a direction of a horizontal Z axis;
a tool post having a tool mount portion configured to hold a first tool, the first tool comprising a first holder and a first bit, the first holder having a longitudinal axis extending lengthwise, and being held by the tool mount portion of the tool post, the first bit being provided at an end, lengthwise, of the first holder, where a longitudinal axis of the first bit is angled with respect to the longitudinal axis of the first holder, at least one of the tool post and the workpiece holding device being configured to be movable to allow relative movement of the first tool held by the tool mount portion of the tool post and the workpiece held by the workpiece holding device in three directions of an X axis, a Y axis and the Z axis, the X axis being perpendicular to the Z axis, the Y axis being perpendicular to the Z axis and to the X axis, the tool post being configured to perform an operation of indexing the first tool held by the tool mount portion of the tool post to a position in which the longitudinal axis of the holder is parallel to the X axis direction;
a controller configured to index the first tool to a position where the axis of the first holder held by the tool mount portion of the tool post is parallel to the X axis, and the axis of the first bit at the end of the first holder is angled with respect to the X axis in an X-Y plane, and to control the relative movement of the first tool and the workpiece so that the first tool is fed in the axis direction of the first bit into a workpiece that is being rotated, with the axis of the first holder maintained parallel to the X-axis; and
a tool exchanger for use in replacing the first tool held by the tool post with a second tool, the second tool comprising a second holder having a longitudinal axis and a second bit having a longitudinal axis,
wherein a longitudinal axis of the tool post is co-axial with the longitudinal axis of the first holder;
wherein the tool exchanger is configured to replace the first tool with the second tool such that an angle between the longitudinal axis of the second bit of the second tool and the longitudinal axis of the second holder of the second tool is different from an angle between the longitudinal axis of the first bit of the first tool and the longitudinal axis of the first holder of the first tool;
wherein the controller is configured to index the tool post to a position where the longitudinal axis of the second holder of the second tool is parallel to the X axis, and, after replacing the first tool with the second tool, the controller is configured to change a direction of relative movement of the second tool and the workpiece from along the longitudinal axis of the first bit of the first tool to along the longitudinal axis of the second bit of the second tool, and
wherein the longitudinal axis of the second bit is angled in the X-Y plane relative to the X axis and a horizontal plane.

### Claim 2 (depends on 1)

The combination machining lathe according to claim 1, wherein the tool exchanger comprises an exchanging arm configured to be slidable in the direction of the Z axis and rotatable around a B axis parallel to the Z axis.

### Claim 3 (depends on 1)

The combination machining lathe according to claim 1, further comprising a tool magazine configured to store a plurality of tools.