Nc automatic lathe

• US 20070068350A1
• Filed: 10/04/2004
• Published: 03/29/2007
• Est. Priority Date: 10/09/2003
• Status: Active Grant

• Current Assignee: Star Micronics Company Limited
• Original Assignee: Star Micronics Company Limited
• Inventors: Ozawa, Satoru, Kawasumi, Masahiro, Aono, Naomi
• Granted Patent: US 7,451,533 B2
• Time in Patent Office: Days
• US Class Current: 82/121
• CPC Class Codes: B23B 3/167 lathe with two or more toolslides carrying turrets
• CPC Class Codes: B23Q 2039/004 Machines with tool turrets
• CPC Class Codes: B23Q 2039/008 Machines of the lathe type
• CPC Class Codes: B23Q 39/026 simultaneous working of toolheads
• CPC Class Codes: Y10T 29/5114 Lathe and tool
• CPC Class Codes: Y10T 82/2502 with program control
• CPC Class Codes: Y10T 82/2508 with tool turret

Abstract

An NC automatic lathe including abase board, a headstock provided with a main spindle and so arranged as to move in a direction of Z1 axis, a back attachment provided with a sub spindle which is so arranged as to be opposed to the headstock, the back attachment being so arranged as to move in directions of Z2 axis, X2 axis and Y2 axis, a guide bush, a first turret tool post arranged at a side of the guide bush so as to move in directions of X1 axis and Y1 axis, a second turret tool post arranged at a side of the guide bush so as to move in directions of Z3 axis, X3 axis and Y3 axis, and a fixed back machining tool unit arranged at a position offset with respect to at least one of the first turret tool post and second turret tool post, to the back attachment in a direction of Z axis, and provided with tool holding portions in at least two rows and two lines in directions of X axis and Y axis.

Claims

1. An NC automatic lathe comprising:

a base board;

a headstock that is mounted on the base board and provided with a main spindle, the headstock being arranged to move in a direction of a Z1 axis that is parallel to an axial direction of the main spindle;

a back attachment that is mounted on the base board and provided with a sub spindle that is arranged to be opposed to the headstock, the back attachment being arranged to move in a direction of a Z2 axis that is parallel to the axial direction of the main spindle, and in both directions of an X2 axis and a Y2 axis that are perpendicular to the direction of the Z2 axis and are perpendicular to each other;

a guide bush that is mounted on the base board between the headstock and the back attachment;

a first turret tool post that is mounted on the base board and arranged at a side of the guide bush to move in both directions of an X1 axis and a Y1 axis that are perpendicular to the axial direction of the main spindle and are perpendicular to each other;

a second turret tool post that is mounted on the base board and arranged at a side of the guide bush to move in a direction of a Z3 axis that is parallel to the axial direction of the main spindle, and in both directions of an X3 axis and a Y3 axis that are perpendicular to the direction of the Z3 axis and are perpendicular to each other; and

a fixed back machining tool unit that is mounted on the base board and arranged at a position offset with respect to at least one of the first turret tool post and the second turret tool post, to the back attachment in a direction of a Z axis that is parallel to the axial direction of the main spindle, the fixed back machining tool unit being provided with tool holding portions in at least two rows and two lines in both directions of an X axis and a Y axis that are perpendicular to the direction of the Z axis and are perpendicular to each other.

2. The NC automatic lathe according to claim 1, wherein the second turret tool post is configured that a back machining tool is attachable thereto.

3. The NC automatic lathe according to claim 2, wherein at least two front face tools and at least two back face tools are attachable to a tool attaching face of the second turret tool post.