Manufacturing management system for changing abnormality detection condition according to manufacturing period-of-time information

Patent metadata

Field	Value
Publication number	US-2018059641-A1
Application number	US-201715681426-A
Country	US
Kind code	A1
Filing date	Aug 21, 2017
Priority date	Aug 23, 2016
Publication date	Mar 1, 2018
Grant date	—

Abstract

A manufacturing management system includes a manufacturing management device and a machine control device. The machine control device includes an abnormality detection unit that changes a predetermined abnormality detection condition in response to an instruction from the manufacturing management device, and a control unit that transmits manufacturing period-of-time information of a robot to the manufacturing management device. The manufacturing management device includes a storage unit that stores a manufacturing start time of the robot, a storage unit that stores the manufacturing period-of-time information of the robot, an operation instruction unit that instructs, based on the manufacturing start time and the manufacturing period-of-time information of the robot, the control unit for an operation of the robot, and an abnormality detection condition change instruction unit that instructs, based on the manufacturing start time and the manufacturing period-of-time information of the robot, the abnormality detection unit to change the predetermined abnormality detection condition.

First claim

1 . A manufacturing management system comprising a manufacturing management device that manages manufacturing of an article, and at least one machine control device that controls a manufacturing machine in response to an instruction from the manufacturing management device, wherein
the machine control device includes: an abnormality detection unit that is configured to acquire an internal state quantity of the manufacturing machine, detect an abnormality of the manufacturing machine based on the internal state quantity and a predetermined abnormality detection condition stored in the machine control device, and change the predetermined abnormality detection condition in response to an instruction from the manufacturing management device; a command creation unit that creates a command for either a manufacturing operation or a preparation running operation of the manufacturing machine in accordance with an instruction from the manufacturing management device; and a control unit that is configured to control the manufacturing machine in accordance with a command of the command creation unit, and transmit operating information indicating whether the manufacturing machine has been manufacturing or not to the manufacturing management device, and wherein the manufacturing management device includes: a manufacturing start time storage unit that stores a manufacturing start time of the manufacturing machine in advance; a manufacturing period-of-time information storage unit that acquires and stores, based on the operating information of the manufacturing machine transmitted from the control unit, manufacturing period-of-time information relating to a period of time for which the manufacturing machine has been manufacturing; an operation instruction unit that determines which of the manufacturing operation and the preparation running operation is to be started based on the manufacturing start time of the manufacturing machine and the manufacturing period-of-time information of the manufacturing machine, and instructs the command creation unit for an operation as a result of the determination; and an abnormality detection condition change instruction unit that determines whether or not to change the predetermined abnormality detection condition based on the manufacturing start time of the manufacturing machine and the manufacturing period-of-time information of the manufacturing machine, and instructs the abnormality detection unit for a result of the determination.

2 . The manufacturing management system according to claim 1 , wherein the operation instruction unit is configured to instruct the control unit for the preparation running operation of the manufacturing machine earlier than the manufacturing start time.

3 . The manufacturing management system according to claim 1 , further comprising a temperature acquisition unit that acquires a temperature of the manufacturing machine, wherein
the operation instruction unit is configured to determine which of the manufacturing operation and the preparation running is to be started based on the manufacturing start time of the manufacturing machine, the manufacturing period-of-time information of the manufacturing machine, and temperature information of the manufacturing machine, and instruct the command creation unit for an operation as a result of the determination, and the abnormality detection condition change instruction unit is configured to determine whether or not to change the predetermined abnormality detection condition based on the manufacturing start time of the manufacturing machine and the manufacturing period-of-time information of the manufacturing machine, or based on the temperature information of the manufacturing machine, and instruct the abnormality detection unit for a result of the determination.

4 . The manufacturing management system according to claim 1 , wherein, when the operation instruction unit and the abnormality detection condition change instruction unit determine that a period of time for which the manufacturing machine has not operated before the manufacturing start time exceeds a predetermined period of time after which hardening of grease may occur, the operation instruction unit is configured to instruct the command creation unit for the preparation running operation of the manufacturing machine, and the abnormality detection condition change instruction unit is configured to instruct the abnormality detection unit to change the predetermined abnormality detection condition.

5 . The manufacturing management system according to claim 1 , wherein the machine control device is configured to limit an operation speed of the manufacturing machine while the predetermined abnormality detection condition is changed.

6 . The manufacturing management system according to claim 1 , wherein the manufacturing machine includes a display unit that displays that the predetermined abnormality detection condition in the abnormality detection unit is changed.

Assignees

• Fanuc Corp

Inventors

• Morimoto Kenjirou

Classifications

• G05B19/4062 Primary

  Monitoring servoloop, e.g. overload of servomotor, loss of feedback or reference · CPC title

• G05B19/4065 Primary

  Monitoring tool breakage, life or condition · CPC title

• B25J9/1674

  characterised by safety, monitoring, diagnostic · CPC title

• G05B19/4083

  Adapting program, configuration · CPC title

• G05B19/4185 Primary

  characterised by the network communication · CPC title