Cell control apparatus which predicts failure of manufacturing machines and production system

Patent metadata

Field	Value
Publication number	US-10274931-B2
Application number	US-201615363214-A
Country	US
Kind code	B2
Filing date	Nov 29, 2016
Priority date	Nov 30, 2015
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A cell control apparatus comprises an operation information acquisition unit which acquires operation information of manufacturing machine, a failure prediction unit which predicts a failure time of the manufacturing machine based on the operation information of the manufacturing machine, and a replacement time acquisition unit which acquires a replacement time of the component from a component management apparatus. When the failure time is earlier than the replacement time, the cell control apparatus performs a control for reducing an operation load of the manufacturing machine on which a failure of the component is predicted so that the failure time is later than the replacement time.

First claim

The invention claimed is:

1. A cell control apparatus which controls a manufacturing cell including a plurality of manufacturing machines, the cell control apparatus comprising:
an operation information acquisition unit which acquires respective operation information of each of the manufacturing machines;
a failure prediction unit which predicts a failure time of a component of at least one of the manufacturing machines based on the respective operation information of the at least one of the manufacturing machines and transmits information on the component predicted to fail to a component management apparatus which performs management of a component of the at least one of the manufacturing machines;
a replacement time acquisition unit which acquires a replacement time which is a time at which the component can be replaced from the component management apparatus; and
a work adjustment unit which judges whether or not the failure time is earlier than the replacement time, and performs a control for reducing and continuing an operation in the at least one of the manufacturing machines on which a failure of the component is predicted so that the failure time is later than the replacement time and a control for performing the operation as reduced in at least one other of the manufacturing machines when the failure time is earlier than the replacement time.

2. The cell control apparatus according to claim 1 , wherein the work adjustment unit creates an operation program of the at least one of the manufacturing machines on which the failure of the component is predicted and an operation program of the at least one other of the manufacturing machines and transmits the operation programs to machine control apparatuses of the manufacturing machines.

3. A production system comprising:
a manufacturing cell including a plurality of manufacturing machines; and
a component management apparatus which performs management of components of the manufacturing machines;
a cell control apparatus which controls the manufacturing cell including the plurality of manufacturing machines, the cell control apparatus comprising:
an operation information acquisition unit which acquires respective operation information of each of the manufacturing machines;
a failure prediction unit which predicts a failure time of a component of at least one of the manufacturing machines based on the respective operation information of the at least one of the manufacturing machines and transmits information on the component predicted to fail to the component management apparatus;
a replacement time acquisition unit which acquires a replacement time which is a time at which the component can be replaced from the component management apparatus; and
a work adjustment unit which judges whether or not the failure time is earlier than the replacement time, and performs a control for reducing and continuing an operation in the at least one of the manufacturing machines on which a failure of the component is predicted so that the failure time is later than the replacement time and a control for performing the operation as reduced in at least one other of the manufacturing machines when the failure time is earlier than the replacement time,

wherein the cell control apparatus transmits information on the component predicted to fail to the component management apparatus through a network and acquires the replacement time from the component management apparatus.

Assignees

• Fanuc Corp

Inventors

• Yamamoto Tomoyuki
• Takahashi Hiromitsu

Classifications

• G05B19/4184

  characterised by fault tolerance, reliability of production system · CPC title

• G05B2219/32371

  Predict failure time by analysing history fault logs of same machines in databases · CPC title

• B25J9/1674 Primary

  characterised by safety, monitoring, diagnostic · CPC title

• G05B19/41815

  characterised by the cooperation between machine tools, manipulators and conveyor or other workpiece supply system, workcell · CPC title

• G05B19/4065

  Monitoring tool breakage, life or condition · CPC title