ke22 final year project modeling and simulation of milling forces simtech project ryan soon, henry...
TRANSCRIPT
KE22 FINAL YEAR PROJECTModeling and Simulation of Milling ForcesSIMTech Project
Ryan Soon, Henry Woo, Yong BoonApril 9, 2011Confidential – Internal Only
2| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
BACKGROUND AND OBJECTIVE
Singapore Institute of Manufacturing Technology (SIMTech)
Knowledge Engineering
Research
Industry
Students
SIMTech as a company
– Develops high value manufacturing technology and human capital
– Enhance competitiveness of Singapore manufacturing industry
Milling process
– One of the many manufacturing processes research upon
3| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
INTRODUCTION TO MILLING
A common machining process used in material manufacturing
Customized solid material can be designed and created
Consist of a milling machine, workpiece, fixture, and cutter
Can be manually operated, mechanically automated or digitally automated via Computer Numerical Control (CNC)
Scope is limited to CNC type of milling machine and its processes
4| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
CONCEPT MAP
5| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
Problems Encountered During Milling Process
6| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
Current Milling Process
7| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
Target Goal for Milling Company
8| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
An Intelligent Tool Wear and Failure Prognostic System
MILLING PROCESS SETUP
Reduce Downtime
Improved Utilization
Pre-Processing and Feature
Selection
KE Models and Accuracy Evaluation
Knowledge Base
GUI Feedback
Milling Process
Sensor SetupData
AcquisitionTool Wear
MeasurementSensory Data
Store
9| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
PROJECT SCOPE AND OBJECTIVES
No Force Feature AE Features
1 Maximum Force Level Peak to peak
2 Total Amplitude of Cutting Force Skewness
3 Amplitude Ratio Kurtosis
4 Average Force Mean of band power
KE Techniques
Under Investigation
10| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
THE END
Q&A
11| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
BACKUP
12| KE22 FYP, Modeling and Simulation of Milling Forces | April 9, 2011 | Confidential – Internal Only
INITIAL KE TECHNIQUES EVALUATION
Neural Network
– No model required ()
– Hard to extract the rules ()
Fuzzy Logic
– Tolerance imprecision ()
– Membership/Rule defined ()
Genetic Algorithm
– Fitness Functions Unclear ()
Heuristics Search
– Model Required ()
Fuzzy Neural
– No model required ()
– Rule Extraction ()
Case-based Reasoning
– Cases Available ()
– Huge Case-Bases System ()
Data Mining
– Data Available ()
Rule Based
– Domain Rule available ()