# US 2017/0284146 A1 · Machine tool system

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- Number: US 2017/0284146 A1
- Document ID: US20170284146A1
- Status: Published application
- Kind: A1
- Application number: 15/477,399
- Filed: 2017-04-03
- Published: 2017-10-05
- Earliest claimed: 2016-04-05
- Assignees: Fanuc Corporation
- Applicants: Fanuc Corporation
- Inventors: Susumu Maki
- Web page: https://patentgrep.com/patent/US20170284146A1

## CPC

- E05F 15/70: with automatic actuation
- B23Q 7/04: by means of grippers {(B23Q7/1494 takes precedence)}
- B23Q 11/0891: {arranged between the working area and the operator}
- E05F 15/632: for horizontally-sliding wings
- F16P 3/00: Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body (F16P5/00 takes precedence)
- B23Q 2707/04: by means of grippers also magnetic or pneumatic gripping
- E05Y 2201/434: Electromotors; Details thereof
- E05Y 2999/00: Subject-matter not otherwise provided for in this subclass
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- 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
- F16P: SAFETY DEVICES IN GENERAL; {SAFETY DEVICES FOR PRESSES}
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

## Abstract

A machine tool system includes: a machine tool that includes an openable door configured to block an opening of a cover surrounding the machine tool, and a door driving unit configured to open and close the door; and a work exchange device configured to exchange a work disposed in the cover. Further, the machine tool system includes: a first opening width setting unit configured to set a door opening width of the door; a second opening width setting unit configured to set a turnback opening width; and a door control unit configured to control the door driving unit to move the door in an opening direction from a completely closed position of the door to a position of the turnback opening width of the door, then move the door in a closing direction and stop the door at a position of the door opening width.

## Claims

### Claim 1

A machine tool system comprising:
a machine tool including an openable door configured to block an opening of a cover surrounding the machine tool, and an electric motor configured to open and close the door; and
a work exchange device configured to exchange a work disposed in the cover,
wherein the machine tool system further comprises:
a first opening width setting unit configured to set a door opening width of the door that is necessary to exchange the work;
a second opening width setting unit configured to set a turnback opening width of the door that is wider than the door opening width; and
a door control unit configured to, when the work exchange device exchanges the work, control the electric motor to move the door in an opening direction from a completely closed position of the door to a position of the turnback opening width of the door, then move the door in a closing direction and stop the door at a position of the door opening width.

### Claim 2 (depends on 1)

The machine tool system according to claim 1, wherein at least one of the first opening width setting unit, the second opening width setting unit and the door control unit is provided to a control device of the machine tool.

### Claim 3 (depends on 1)

The machine tool system according to claim 1, wherein at least one of the first opening width setting unit, the second opening width setting unit and the door control unit is provided to a control device different from a control device of the machine tool.

### Claim 4 (depends on 3)

The machine tool system according to claim 3, wherein the control device different from the control device of the machine tool is a control device of the work exchange device.

### Claim 5 (depends on 1)

The machine tool system according to claim 1, wherein the work exchange device includes a grip unit configured to grip the work, and a movement member configured to move the grip unit.

### Claim 6 (depends on 5)

The machine tool system according to claim 5, wherein:
when the door moves in the opening direction to the position of the door opening width, the work exchange device drives the movement member and the grip unit at a stop position to exchange the work and then retract the grip unit to the stop position; and
when the grip unit is retracted to a position at which the door, the movement member and the grip unit do not interfere with each other even though the door is moved to the completely closed position after exchanging the work, the door control unit controls the electric motor to move the door that stops at the position of the door opening width in the closing direction and close the door.