computer Integrated manufacturing
Industrial & Manufacturing Enterprise Department
The Wichita State University
What is the Manufacturing Enterprise?
An Enterprise is a complex system
of cultural, process, and technology components ...
... a system engineered to accomplish organizational
The Enterprise is a system that has certain
• Set direction
• Acquire customers
• Develop product
• Fulfill orders
• Support customer
• Acquire resources
• Manage financial
Legacy systems - existing systems (many
times not built for integration)
Ch 3 - The Computing System
The Computing System
Mainframes PCs Minis Portables WS OS Apps Tools
CAD (Computer Aided Design) or Computer Aided Design
& Drafting (CADD) operators use
mainframes/minis/workstations/micro-computer systems to
engineer and design complex parts in today's manufacturing
Prior to the 1980's, draftsmen used drawing boards, T
Squares and a plethora of tools to draw blueprints manually
Now, blueprints, models and complete engineering designs
are created on personal computers, workstations and
networked computer terminals. Thus the need for manual
drawings, pasted-on modifications and such have been
replaced by the superior results achieved by the use of CAD
Multiple Views (example)
CAD multiple views
Solid - BREP
Solid - CSG
functionality for a specific application
must be tailored for the specific application and
Workgroup - PDM
Ch 4 - CAD/CAM Integration Studies
Integration of design and manufacturing
Benefits through local optimums!
Why minimal integration?
Only can do what technology permits!!
Enterprise wide or nothing???
Examples for paper #2
I have a textbook full of other examples
Integration of existing processes
Overview of Design
Assembly Work Cell
Strengths/weaknesses of approach
Simultaneous Engineering (IPD)
% of cost determined at design stage (get quote)
Traditional vs DFM
The Use of Features
DFM - architecture
Shop Floor Integration
read for yourself
Ch 5 - Manufacturing Elements of
to review the mfg and CAM activities
to understand the integration of these
CAM (Computer Aided Manufacturing) systems are used in
all modern manufacturing workplaces to model parts being
constructed in machining operations and design processes,
not only for modeling purposes but for design and quality
assurance purposes as well!
CAM systems are used for determining the accuracy of
design prior to manufacturing.
Models can be checked for diameters, wall thicknesses, stress
analysis, clearances and many other features determined to
be critical before the initial workpiece is ever constructed,
thus eliminating unnecessary production cost as well as
reducing the time it takes to produce the part.
CAM systems are used to generate the CNC toolpath
programs used in machining the actual workpieces. The great
majority of machining done today is done on CNC controlled
machines and involve the end products designed on CAM
CNC ( Computerized Numerical Control) machines
are designed to accurately produce machined parts at
a higher rate of speed than manually machined parts
and with much greater repeatability.
Like CAD and CAM, CNC machines are related
through their use of the Cartesian Coordinate system.
Both milling and turning is nearly all done on
Computerized Numerically Controlled machines
Three aspects of MFG
Automation and Computer Control
Shop Data Collection
Time and Attendance recording
Shipping and receiving recording
Other resources (can read articles on web)