Link information generation device, link information generation method, and non-transitory computer-readable medium storing link information generation program

Patent metadata

Field	Value
Publication number	US-11209792-B2
Application number	US-201816184410-A
Country	US
Kind code	B2
Filing date	Nov 8, 2018
Priority date	Dec 27, 2017
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

To generate link information containing association between machining information and/or machine information in a machining program, and an optical feature in a workpiece image. A link information generation device 1 comprises: a machining information acquisition unit 111 that acquires machining information in a machining program for a machine tool that executes machining on a workpiece W; a machine information acquisition unit 112 that acquires machine information about the machining state of the machine tool; a workpiece image acquisition unit 13 that acquires image information about the workpiece W; an optical feature setting unit 14 that sets an image area having an optical feature in the image information about the workpiece W; and a link information generation unit 15 that generates link information containing association between the image area having the optical feature, and the machining information and/or the machine information about a workpiece area associated with the image area.

First claim

What is claimed is:

1. A link information generation device comprising:
a processor; and
a memory,
wherein the processor is configured to:
acquire information about an execution position and a machining position in a machining program for a machine tool that executes machining on a workpiece by moving a tool and the workpiece relative to each other based on the machining program;
acquire at least one of machining information about the machining program at the execution position in the machining program having been used for machining, the machining information containing execution position information and machining execution information, and machine information about a machining state of the machine tool at the execution position in the machining program;
acquire image information about the workpiece;
set an image area having an optical feature in the image information about the workpiece, divide the image information about the workpiece based on designated area division information, and set an optical feature quantity in an area resulting from the division; and
generate link information containing an association between the image area having the optical feature, and at least one of the machining information and the machine information about a workpiece area associated with the image area,

wherein the execution position information contains a machining program number and a block number in the machining program, and
wherein the machining execution information contains at least one of machining path information including a command coordinate value indicated by a block in the machining program, a machining condition, parameter information about a time constant and a tolerance relating to acceleration/deceleration control, tool information, feedback information including position feedback information and speed feedback information, and a state of internal processing in a controller.

2. The link information generation device according to claim 1 , wherein
the machine information contains at least one of sensor data information and servo information.

3. The link information generation device according to claim 1 , wherein
the processor is configured to acquire the image information about the workpiece at a time of finish of a machining step designated in advance, and
the processor is configured to associate the image area having the optical feature in the image information about the workpiece with at least one of the machining information and the machine information about the workpiece area associated with the image area contained in the designated machining step and a machining step executed before the designated machining step.

4. The link information generation device according to claim 1 , wherein
the processor is configured to acquire the image information about the workpiece at a time of finish of a machining step designated in advance, and
the processor is configured to associate the image area having the optical feature in the image information about the workpiece with at least one of the machining information and the machine information about the workpiece area associated with the image area contained only in the designated machining step.

5. A link information generation method executed by one, or two or more computers, the link information generation method comprising:
an information acquisition step of acquiring information about an execution position and a machining position in a machining program for a machine tool that executes machining on a workpiece by moving a tool and the workpiece relative to each other based on the machining program,
the information acquisition step comprising at least one of a machining information acquisition step of acquiring machining information about the machining program at the execution position in the machining program having been used for machining, the machining information containing execution position information and machining execution information, and a machine information acquisition step of acquiring machine information about a machining state of the machine tool at the execution position in the machining program;
a workpiece image acquisition step of acquiring image information about the workpiece;
an optical feature setting step of setting an image area having an optical feature in the image information about the workpiece acquired in the workpiece image acquisition step, dividing the image information about the workpiece based on designated area division information, and setting an optical feature quantity in an area resulting from the division; and
a link information generation step of generating link information containing an association between the image area having the optical feature, and at least one of the machining information and the machine information about a workpiece area associated with the image area area, wherein
the execution position information contains a machining program number and a block number in the machining program, and
the machining execution information contains at least one of machining path information including a command coordinate value indicated by a block in the machining program, a machining condition, parameter information about a time constant and a tolerance relating to acceleration/deceleration control, tool information, feedback information including position feedback information and speed feedback information, and a state of internal processing in a controller.

6. A non-transitory computer-readable medium storing a link information generation program for causing one, or two or more computers to execute:
an information acquisition step of acquiring information about an execution position and a machining position in a machining program for a machine tool that executes machining on a workpiece by moving a tool and the workpiece relative to each other based on the machining program,
the information acquisition step comprising at least one of a machining information acquisition step of acquiring machining information about the machining program at the execution position in the machining program having been used for machining, the machining information containing execution position information and machining execution information, and a machine information acquisition step of acquiring machine information about a machining state of the machine tool at the execution position in the machining program;
a workpiece image acquisition step of acquiring image information about the workpiece;
an optical feature setting step of setting an image area having an optical feature in the image information about the workpiece acquired in the workpiece image acquisition step, dividing the image information about the workpiece based on designated area division information, and setting an optical feature quantity in an area resulting from the division; and
a link information generation step of generating link information containing an association between the image area having the optical feature, and at least one of the machining information and the machine information about a workpiece area associated with the image area area, wherein
the execution position information contains a machining program number and a block number in the machining program, and
the machining execution information contains at least one of machining path information including a command coordinate value indicated by a block in the machining program, a machining condition, parameter information about a time constant and a tolerance relating to acceleration/deceleration control, tool information, feedback information including position feedback information and speed feedback information, and a state of internal processing in a controller.

Assignees

• Fanuc Corp

Inventors

• Sugita Yuuki
• Cui Hang

Classifications

• G05B19/406 Primary

  characterised by monitoring or safety (G05B19/19 takes precedence) · CPC title

• G05B2219/37558

  Optical sensor, scanner · CPC title

• G05B19/19

  characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path · CPC title

• G05B2219/37117

  Optical sensor, delivers analog signal as function of displacement · CPC title

• G05B2219/50064

  Camera inspects workpiece for errors, correction of workpiece at desired position · CPC title