3DCS Advanced Analyzer and Optimizer for Tolerance Analysis
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Advanced Analyzer and Optimizer
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Use AAO, Advanced Analyzer and Optimizer, to quickly optimize your designs for maximum quality at the lowest cost. Excellent for quickly testing and changing many tolerances at once, AAO is a great way to speed up modeling, and more importantly, speed up the process of testing and checking new tolerance strategies. As an inexpensive add-on to any of DCS's 3DCS software suites, including the embedded CATIA versions, AAO is a simple way to save time and increase efficiency.
Transcript of 3DCS Advanced Analyzer and Optimizer for Tolerance Analysis
Advanced Analyzer and Optimizer
dcs
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Brief Company Introduction
Demo: Suspension Model
AAO Overview
Optimizers
New Developments & Closing Questions6
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Analyzers
Agenda
QDM
Quality Data Management 3DCS Suite of Products
DCS Product Suite
Company Overview1
Dimensional Control Systems
3DCS Variation Analyst Suites
Multi-CAD CATIA V5 CATIA V6 Mechanical
3DCS Add-On Modules
Advanced Analyzer and Optimizer FEA Compliant Modeler RTT DeltaGen Export Mechanical Modeler GeoFactor
Company Overview1
Why AAO?
It has a lot of important measurements.
AAO Overview2
My model has dozens of tolerances.
dcs
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What feature is my model most sensitive to?
Which tolerances contribute the most?
How can I save money?
How do I know I’m getting the best quality for my money?
AAO
Analysis run. Now what?
dcs
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Analyzers
Where Do I Start?
Most Sensitive Model Features
• Quickly identifies where design is sensitive to variation• Enhanced GeoFactor results• Change individual tolerance ranges for instant results• Show GeoFactor or Percentage Contribution• Global color scaling based on adjustable sliders
Advanced Analyzer Matrix
Tolerances That Contribute the Most
Critical Tolerance Identifier
Measurements
Tolerances
PercentContribution
Critical Tolerance Identifier
• Pp*: spec limits, no mean shift• Ppk*: spec limits, mean shift• Out%: significant out-of-spec
results• Ave%: average % contribution
per measurement
*Process Performance, Process Performance Index
• Sigma: no spec limits, no mean shift
HLM Sensitivity + GeoFactor**
Quantifies the effect of tolerances and assembly variation on the measures
simultaneously and globallyCalculates each measure separately
CTI Results
Identify the greatest contributing tolerance globally
**Geofactor is a 3DCS Add-on often packaged with 3DCS Suites
Tolerance That Contribute the Most
Optimizers
How can I save money?
How do I know I’m getting the best quality for my money?
Maximize Tolerances to Save Money
Tolerance Cost Optimizer
Achieve desired quality at minimum cost
Goal Value (spec lim)
Max, Min, Lock, Cost
Opt Meas
Opt Tol
Total Current Cost, Total Optimized (Minimum) Cost
Input
per Measure
per Tolerance
Optimizer
Output
*Assumption: larger tolerance = less cost
Cost Optimization Assumptions
Measures
• Goal Value: check all spec limits, default is fine
Tolerances
• MaxTol/MinTol– Profile, MinTol = 1.0mm
– Position, MinTol = 0.5mm
• Locking– Tooling (no ability to change)
– Size (low influence on model)
• Cost– Profile tolerance costs 20% of Position tolerance
– All other tolerances equal
With Defaults
With Assumptions
After Max/MinTol Adjustments based on CTI results
Determine Optimized Tolerances
Update Model with Optimized Tols
The Update Model Tolerances button pushes OptTols back to the model
Manually enter tolerances according to results
OR
Increases CostDecreases CostRemains Constant
Achieve Maximum Quality for Cost
Tolerance Quality Optimizer
Achieve best possible quality at a defined cost
Goal Value, Weight
Max, Min, Lock, Cost
Total Available Budget
Opt Meas
Opt Tol
Total Current Cost, Total Optimized (Minimum) Cost, Optimized Quality Value
Input
per Measure
per Tolerance
Optimizer
Output
*Assumption: Weight and Cost are relative values
Quality Optimization Assumptions
Measures
• Goal Value: check all spec limits, default is fine
• Weight: set unimportant measures to zero
Tolerances
• MaxTol/MinTol– Profile, MinTol = 1.0mm
– Position, MinTol = 0.5mm
• Locking– Tooling (no ability to change)
– Size (low influence on model)
• Cost– Profile tolerance costs 20% of Position tolerance
– All other tolerances equal
Other
• Total Available Budget: estimated cost (assume unlimited to see best quality)
With an “unlimited” Budget, best achievable quality is -0.412 @ $8276.25
Assume an Available Budget of $5000, quality is -0.586
After Max/MinTol Adjustments with $5000 Budget, quality is -0.436
Determine Optimized Quality
Update Model with Optimized Tols
The Update Model Tolerances button pushes OptTols back to the model
Manually enter tolerances according to results
OR
Increases CostDecreases CostRemains Constant
Demo: Suspension Model
