3-D Model Based Manufacturing and
Inspection
Brian Pippenger
August 2, 2012
© 2012 Rolls-Royce Corporation The information in this document is the property of Rolls-Royce Corporation and may not be copied or
communicated to a third party, or used for any purpose other than that for which it is supplied without the express written consent of RollsRoyce Corporation. This information is given in good faith based upon the latest information available to Rolls-Royce Corporation, no
warranty or representation is given concerning such information, which must not be taken as establishing any contractual or other
commitment binding upon Rolls-Royce Corporation or any of its subsidiary or associated companies.
Overview
 Why MBD ?
 Risk
 Benefits
 Future of MBD-”Smart Models”
 Quality Information Framework-QIF
 Summary and conclusion
 Questions\Comments
Why model based definition ?
 Move away from 2-D paper drawings
 Smart 3-D Models
PMI
 GD&T

 Aerospace, military, automotive
 NIST developing QIF with DMSC,
manufactures and software vendors
Risks to MBD implementation
 Culture of organization

Documentation
 FAA rules and regulations

Advisory circular No: 21-48
- Used to describe electronic modeling
system
- If used must be in its entirety
 Adequate replacement for 2-D paper
prints
Concerns when developing an MBD
environment
 Data accessibility
 Data content
 Data presentation to standards
 Data management
 Data security
 Data retention
Many benefits to MBD
 Viewed in a common platform

PDF viewer
 Keep cost down for OEM suppliers and
vendors
 Fully annotated model
 Defining a common methodology for
CAD techniques across internal and
external supply chain
Levels of annotation
 As model develops definition becomes
rich with data
 Will become the standard
 2-D paper prints no longer needed

Can be made for convenience during
transition
 Annotations to models added in steps
Level 1-minimal annotation
 Envelope dimensions (overall boundary
dimensions of the part)
 “Block” or profile tolerance as applied to
the entire part
 Material and finish
requirements
 Title block information
Level 2-partial annotation
 Envelope dimensions
 “Block” or profile tolerance
 Material and finish requirements
 Title block information
 Non-standard dimensions
 Site map
 Critical notes
Level 3-full annotation
 Envelope dimensions
 “Block” or profile tolerance
 Material and finish requirements
 Title block information
 Full dimensions
 Site map
 Full notes
 Auxiliary views
MBD working environment
 Large amount of engineering knowledge
captured in model
 Complete annotated model avoids
ambiguities
 Reverse engineering of legacy products
 Manufacturing\Inspection programming
saving will show significant benefits
Smart models
 All inclusive data set of product
 Programming speed increased
 Interoperability standards being
developed
 Associativity of all entities
Quality Information Framework-QIF
 DMSC & NIST helping to develop
standard
 Holistic and integrated set of information
models
 QIF development of standards
Quality Measurement Plans-QMPlans
 Quality Measurement Rules-QMRules
 Quality Measurement Results-QMResults

QIF development
 Ensure interoperability
 Any information for manufacture or
inspection
 Semantic connections
 Provide a platform that is easy for
everyone to access and understand
Summary
 Many transitioning to MBD
 Collaboration between operations,
engineering, and supply chain
 Reduces labor costs, quality losses
 Enterprise agility
 Lower product costs
 Culture changes top down
 Model is final normative of part definition
Conclusion
 Best practices developed and followed
 All in supply chain need to be on board
 Communication of intent is vital
No surprises
 Every effort to help all involved

 Correct path for future business
 Reliable and accessible data for supply
chain
Question\Comments
Thank You