Numerical controller

Patent metadata

Field	Value
Publication number	US-2020117169-A1
Application number	US-201916704758-A
Country	US
Kind code	A1
Filing date	Dec 5, 2019
Priority date	Dec 14, 2016
Publication date	Apr 16, 2020
Grant date	—

Abstract

A numerical controller performs control to rotate a turret, which holds a plurality of tools on the outer peripheral portion thereof, thereby moving one (selected tool) of the tools selected by a command to a predetermined position (selected position). The numerical controller sets and holds a partial area of the outer peripheral portion of the turret as an area (passage-prohibited area) prohibited from passing through the selected position and determines whether or not the selected tool is present in the passage-prohibited area or whether or not the passage-prohibited area passes through the selected position as the selected tool is moved to the selected position.

First claim

1 . A numerical controller configured to rotate, during a tool selection, a turret, which holds a plurality of tools on an outer peripheral portion thereof, thereby moving a selected one of the plurality of tools selected by a command to a selected position, the numerical controller comprising:
a processor configured to:
hold a partial area of the outer peripheral portion of the turret as a passage-prohibited area, the turret is prohibited from rotating in a rotational direction that results in the passage-prohibited area passing through the selected position;
prior to rotating the turret in the rotational direction to move the selected one of the plurality of tools to the selected position, determine whether or not the selected one of the plurality of tools is present in the passage-prohibited area and whether or not the passage-prohibited area passes through the selected position as the turret is rotated in the rotational direction to move the selected one of the plurality of tools to the selected position during the tool selection;
rotate the turret in the rotational direction to move the selected one of the plurality of tools to the selected position when it is determined that the selected one of the plurality of tools is not present in the passage-prohibited area and the passage-prohibited area does not pass through the selected position as the turret is rotated in the rotational direction to move the selected one of the plurality of tools to the selected position; and
prohibit the turret from rotating in the rotational direction and generate and alarm when it is determined that the selected one of the plurality of tools is present in the passage-prohibited area or when it is determined that the passage-prohibited area will pass through the selected position as the turret is rotated in the rotational direction.

2 . A numerical controller configured to rotate, during a tool selection, a turret, which holds a plurality of tools on an outer peripheral portion thereof, thereby moving a selected one of the plurality of tools selected by a command to a selected position, the numerical controller comprising:
a processor configured to: hold a partial area of the outer peripheral portion of the turret as a passage-prohibited area, the turret is prohibited from rotating in a rotational direction that results in the passage-prohibited area passing through the selected position; prior to rotating the turret in the rotational direction to move the selected one of the plurality of tools to the selected position, determine whether or not the selected one of the plurality of tools is present in the passage-prohibited area and whether or not the passage-prohibited area passes through the selected position as the turret is rotated in the rotational direction to move the selected one of the plurality of tools to the selected position during the tool selection; rotate the turret in the rotational direction to move the selected one of the plurality of tools to the selected position when it is determined that the selected one of the plurality of tools is not present in the passage-prohibited area and the passage-prohibited area does not pass through the selected position as the turret is rotated in the rotational direction to move the selected one of the plurality of tools to the selected position; prohibit the turret from rotating in the rotational direction when it is determined that the selected one of the plurality of tools is present in the passage-prohibited area or when it is determined that the passage-prohibited area will pass through the selected position as the turret is rotated in the rotational direction; and in response to prohibiting the turret from rotating in the rotational direction, select a newly selected tool outside the passage-prohibited area, and move the newly selected tool to the selected position.

Assignees

• Fanuc Corp

Inventors

• Koyanaka Yousuke

Classifications

• B23Q17/2208 Primary

  Detection or prevention of collisions · CPC title

• G05B2219/49157

  Limitation, collision, interference, forbidden zones, avoid obstacles · CPC title

• B23Q2039/004

  Machines with tool turrets · CPC title

• G05B2219/35349

  Display part, programmed locus and tool path, traject, dynamic locus · CPC title

• B23Q2220/002

  Tool turrets · CPC title