Machine tool

Patent metadata

Field	Value
Publication number	US-10603752-B2
Application number	US-201715581409-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	May 11, 2016
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A machine tool that cuts a workpiece by a rotary tool includes a tool spindle device that holds the rotary tool in a manner to allow self-rotation with a predefined tool rotational axis Rt as a center, one or more in-machine robots, and a connecting mechanism that attaches the in-machine robot on the tool spindle device so that the in-machine robot moves independently from the rotary tool at a periphery of the tool spindle device with the tool rotational axis Rt as a center.

First claim

The invention claimed is:

1. A machine tool that cuts a workpiece by a tool, the machine tool comprising:
a tool spindle device comprising:
a tool spindle;
a spindle head including the tool spindle;
a drive motor operably connected to the tool spindle and structured to rotate the tool spindle around a predefined tool rotational axis;
wherein the tool spindle is structured to hold the tool in a detachable manner;

one or more robots;
wherein the one or more robots are attached to the spindle head via a connecting mechanism so that the one or more robots move independently from the tool and revolve circularly about the same predefined tool rotational axis;
the predefined tool rotational axis is at a center of the circular revolution; and
the tool spindle device can swing with an axis orthogonal to the tool spindle axis as a center.

2. The machine tool according to claim 1 , wherein
the robot can access at least one of the tool and the workpiece during execution of machining of the workpiece by the tool.

3. The machine tool according to claim 2 , wherein
the robot executes at least one of a support of machining of the workpiece by the tool, sensing related to the tool or the workpiece during the machining, and additional machining.

4. The machine tool according to claim 1 , wherein
the robot executes at least one of a support of machining of the workpiece by the tool, sensing related to the tool or the workpiece during the machining, and additional machining.

5. The machine tool according to claim 1 , wherein
the robot is an arm-type robot comprising:
one or more end effectors that act on a target;
one or more arms that support the one or more end effectors; and
one or more joints provided at ends of the one or more arms.

6. The machine tool according to claim 1 , wherein
the robot comprises a grip unit structured to grip the tool or the workpiece.

7. The machine tool according to claim 1 , wherein
the machine tool is a multi-tasking machine having a lathe function to lathe-turn the workpiece, and comprises:
a workpiece spindle device that holds the workpiece in a manner to allow self-rotation; and
a tool post that holds a lathe-turning tool which lathe-turns the self-rotating workpiece.

8. The machine tool according to claim 7 , wherein
the robot can access at least one of the workpiece and the lathe-turning tool during lathe-turning machining by the lathe-turning tool.

Assignees

• Okuma Machinery Works Ltd

Inventors

• Morimura Shoichi

Classifications

• B23P23/00 Primary

  Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass (if the particular kinds of operation are not essential B23Q37/00 - B23Q41/00; {working by laser beam combined with other working of metal B23K26/0093}) · CPC title

• B25J9/0096

  co-operating with a working support, e.g. work-table · CPC title

• B23Q11/1084

  specially adapted for being fitted to different kinds of machines · CPC title

• B23Q11/005 Primary

  by blowing · CPC title

• B23Q17/00

  Arrangements for {observing,} indicating or measuring on machine tools (for automatic control or regulation of feed movement, cutting velocity or position of tool or work B23Q15/00) · CPC title