CAD学习课件Chapter1

Process Planning Production Process Schedule Material Running and Control Quality Control
1.1
The Basic Ideas
1.1.3 CAM Techniques Computer Aided Manufacturing Narrow sense:
Engineering Design System Production Management System Collaboration Architecture of Work Application Environment (PMS)
•Data Management •Material Management •Planning Management •Manufacturing Resource Management
THE CAM PROCESS
Marketing
THE MANUFACTURING PROCESS
Typical product cycle
1.1
The Basic Ideas
1.1.1 CAD Techniques Computer Aided Design
Design conceptualization Design modeling and simulation Design analysis Design optimization Design evaluation Design communication and documentation
The use of the computer to create an individual process plan from scratch, automatically and without human assistance.1.1源自The Basic Ideas
1.1.3 CAM Computer Aided Manufacturing Broad sense: All Activity From a Workblank to a Product
1.3 Enabling Technologies 1.4 Development and Application
THE DESIGN PROCESS
Design need Design definitions, specifications, and requirements
Synthesis
Collecting relevant Design information and feasibility study
CAD refers to the design and technical drawing of various engineering applications on computers. Make changes easily. Validate design against design rules. Simulate design without building a physical prototype.
CAD/CAM System
1.2.1 Composition of CAD/CAM System
HARDWQRE
SOFTWQRE
COMPUTER
PERIPHERAL
APPLICATION
SUPPORTING
SYSTEM
1.2
Hardware and Software
1.2.2 Hardware of CAD/CAM System Basic Requirement
SCANER
DISK
COMPUTER
NC DEVICE
GRAPHIC INPUT TABLET
BACKGROUND CONTROL
GRAPHIC DISPLAY
1.2
Hardware and Software
1.2.2 Hardware of CAD/CAM System
Host Storage Facility Input Device Output Device
CAD Tools Required to Support the Design Process
Design Conceptualization Design modeling and simulation Design analysis Design optimization Design evaluation Design communication and documentation Geometric modeling techniques; Graphics aids, manipulations, and visualization Same as above; animation; assemblies; special modeling packages Analysis packages; customized programs and packages Customized applications; structural optimization Dimensioning; tolerances; bill of materials; NC Drafting and detailing; shaded images
(EDS)
Computer
Network Database Quality Management System (QMS)
•Production Information Manufacturing System(PIS) •Production Schedule Simulation(PSS) •Production Schedule Control(PSC) •Production Detect and Diagnose(PDD)
Analysis
Design Communication and documentation Design evaluation Design optimization Design analysis
THE CAD PROCESS
Design modeling and simulation Design conceptualization
•Project Management •Computer Aided Design(CAD/DFX) •Computer Aided Process Planning(CAPP) •Computer Aided Fixture Design(CAFD) •Computer Aided Manufacturing(CAM)
Automation System
•Quality Information Management(QIM) •Quality Analysis System(QAS) •Quality Plan System(QPS) •Quality Inspection System(QIS)
1.2
Hardware and Software
Process planning
Process planning is concerned with determining the sequence of individual manufacturing operations needed to produce a given part or product. The resulting operation sequence route sheet
N
Acceptable? Y
Documentation and Drawings
To CAM process
1.1
The Basic Ideas
1.1.2 CAPP Techniques Computer Aided Process Planning
Design Workblank Machine Selection Design Operation Sequence Routing Schedule Working-hours Calculation
Associated Machine tools
The computer’s job in CAPP
Input translation; Arithmetic calculations; Cutter offset computation; Postprocessor.
1.1
The Basic Ideas
Strong Graphic Aids Large Storage Volume Convenient Interactive Interface Easy Communication and Network
1.2
Hardware and Software
PTINTER/PLOTTER TAPE
1.2.2 Hardware of CAD/CAM System
1.2.2
1.1.2 CAPP Approaches
Variant Approach also called Retrieval-type ～ Generative Approach Hybrid Approach Parts classification and coding
and group technology as a foundation
Process planning
Production planning Design and procurement of new tools Order material NC,CNC,DNC programming
Production
Quality control
Packaging
Shipping
CAD/CAM