Machine tool and machining method

Patent metadata

Field	Value
Publication number	US-2017129018-A1
Application number	US-201515321808-A
Country	US
Kind code	A1
Filing date	May 15, 2015
Priority date	Jun 27, 2014
Publication date	May 11, 2017
Grant date	—

Abstract

A machine tool includes a main spindle that rotates while holding a workpiece, a mover that moves a cutting tool including a linear cutting blade that cuts the workpiece, with respect to the workpiece in a moving direction including at least a Z-direction parallel or substantially parallel with the axis of the main spindle and a Y-direction perpendicular or substantially perpendicular to both the Z-direction and an X-direction determining the amount of cutting of the workpiece, a holder that holds the cutting tool in a state in which the direction of the linear cutting blade is inclined with respect to the Z-direction by a predetermined angle when seen from the X-direction, and an angle adjuster that changes the edge angle.

First claim

1 - 8 . (canceled)

9 . A machine tool comprising:
a main spindle that rotates while holding a workpiece; a mover that moves a cutting tool with respect to the workpiece in a moving direction including at least a Z-direction parallel or substantially parallel with an axis of the main spindle and a Y-direction perpendicular or substantially perpendicular to both the Z-direction and an X-direction determining an amount of cutting of the workpiece, the cutting tool including a linear cutting blade that cuts the workpiece; a holder that holds the cutting tool in a state in which a direction of the linear cutting blade is inclined with respect to the Z-direction by a predetermined angle when seen from the X-direction; and an angle adjuster that changes the predetermined angle.

10 . The machine tool of claim 9 , wherein the moving direction is a direction obtained by combining the Z-direction and the Y-direction.

11 . The machine tool of claim 9 , wherein
the angle adjuster includes a rotor that is able to rotate about an axis parallel or substantially parallel with the X-direction; and the holder is mounted on the rotor.

12 . The machine tool of claim 11 , wherein the rotor is integral with the holder.

13 . The machine tool of claim 11 , further comprising a driver that rotates the rotor.

14 . The machine tool of claim 11 , wherein the rotor and a support that supports the rotor are provided with marks indicating the predetermined angle.

15 . The machine tool of claim 9 , further comprising a controller that controls movement of the mover based on information about the predetermined angle and the workpiece.

16 . A method for machining a workpiece rotating while being held by a main spindle, the method comprising:
moving a cutting tool with respect to the workpiece in a moving direction including at least a Z-direction parallel or substantially parallel with an axis of the main spindle and a Y-direction perpendicular or substantially perpendicular to both the Z-direction and an X-direction determining an amount of cutting of the workpiece, the cutting tool including a linear cutting blade that cuts the workpiece; holding the cutting tool in a state in which a direction of the linear cutting blade is inclined with respect to the Z-direction by a predetermined angle when seen from the X-direction; and changing the predetermined angle.

Assignees

• Murata Machinery Ltd

Inventors

• Ishihara Tadashi
• Matsukura Yasuhiro

Classifications

• B23B29/323 Primary

  Turrets with power operated angular positioning devices · CPC title

• B23B29/04

  Tool holders for a single cutting tool · CPC title

• B23B3/06

  Turning-machines or devices characterised only by the special arrangement of constructional units (B23Q37/00 takes precedence; such features of general applicability B23Q) · CPC title

• B23B1/00

  Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods · CPC title

• B23B27/1692

  Angular position of the cutting insert adjustable around an axis parallel to the chip-forming plane · CPC title