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Lathe Maintenance Ontology (LMO)
By: Keith Fitzsimmons
IE 500 Final Project – Fall 2014
Scope
 Create an ontology which outlines a machines
necessary preventative maintenance based on a
set time period.
2
www.eptam.com
Lathes
 What is a lathe?
3
Preventative Maintenance
 What is preventative maintenance?
4
Maintenance Regimen
5
Maintenance Task
6
Applications
 Outlining the required preventative maintenance necessary
to ensure proper operation lifespan of equipment.
 Original equipment manufacturers can use information to
see required maintenance on a competitors machine similar
to their own.
 Creation of a centralized location for the storage of all
maintenance tasks necessary to complete preventative
maintenance on a specific piece of machinery.
7
Existing Ontologies
 Manufacturing Service Descriptive Language (MSDL)
 Focuses on solely manufacturing process.
 Industrial Maintenance Management Ontology (IMAMO)
 Focuses on what is needed to create a preventative maintenance
program.
8
MSDL
• General overview
of the
manufacturing
process and its
capability.
• Does not include
maintenance
anywhere in the
process.
9
http://ceur-ws.org/Vol-886/paper_1.pdf
IMAMO – CONCEPT TREE
10
Existing Databases
 Computerized Maintenance Management Software(CMMS)
 These programs manage machine maintenance using chart style
databases.
 This style program is normally controlled by a single company,
organization or site where the machinery is used.
 Equipment identifiers may not be unique to a machine in this
database if it is used by a large organization.
11
LMO – Continuants
• The continuants
are the machines,
their preventative
maintenance
schedule and
objects needed to
conduct
maintenance
tasks.
12
LMO- Preventative Maintenance
Schedule
• The preventative maintenance schedule is
recommended by the original equipment
manufacturer.
• Adherence to this impact the warranty on the
machine.
13
LMO - Occurents
• These include the
practiced maintenance
regimen; the
maintenance tasks and
time periods which are
used to create the
maintenance regimen.
14
Maintenance Regimen
• Maintenance to be
•
completed as prescribed by
the preventative
maintenance schedule.
15
Important part of this
ontology as different
machines can have the
same Maintenance Task at a
different time period.
LATHE
CNC
LATHE
OKUMA
LT-10
PM
SCHEDULE
MAINTENANCE
PM
REGIMEN
SCHEDULE
MAINTENANCE
TASK
16
QUESTIONS?
17