2. CAD & CAM’S USE IN INDUSTRIES
CAD & CAM is concerned with application of
computers to various deptts. Starting from
design office to production deptt., To
machine shops & assembly shops, to
inspection & quality control deptts., Right
through to the finished parts store.
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
3. COMPUTER AIDED DESIGNS(CAD)
CAD can be defined as use of computers to aid the
design process.
CAD systems are being used in various stages of
design ,development & manufacturing such as
conceptual design, analysis, rapid prototyping,
documentation and manufacturing.
CAD methods are being used in design of
engineering components, automobiles, aircrafts,
buildings, textiles etc.
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
5. IMPORTANCE & NECESSITY OF CAD
As computers can store & handle large amount of
engg. Data which can be used in various stages of
design, process planning, manufacturing, analysis etc.
Complex geometrical shapes can be visually checked
& inspected using 3D models.
CAD packages can be employed for design analysis
and optimization before actually implementing the
design.
It makes design modeling and simulation an easy
task.
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
6. IMPORTANCE & NECESSITY OF CAD (contd.)
Product design & development cycle can be markedly
reduced which in turn reduces lead time.
Design is an interactive process so various alternative
designs can be easily compared using CAD & the best
one can be implemented.
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
8. COMPUTER AIDED
MANUFACTURING (CAM)
CAM may be defined as any support that can be
provided by computers in manufacturing a given
product.
Computers can be used for operation and control of a
manufacturing process.(Direct Role)
Computers can be used for process planning, NC
part programming, material handling and
storage, inspection, inventory control and quality
control.
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
9. COMPUTER AIDED MANUFACTURING (CAM)
Cam uses NC( numerical controlled) machines and CNC( computer
numerical controlled ) machines with the help of NC programs and
APT programs.
With the help of these programs we can control the motion of
machines such as milling, drilling, cutting etc.
In NC part programming we have to enter a sequence of
instructions and machines work accordingly. For Ex.
M00- PROGRAM STOP
M06- TOOL CHANGE
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
11. COMPUTER AIDED MANUFACTURING (CAM)
In APT we have to give motion statements like
GOTO, FROM,POINT etc.
With the help of CAM, machines work as per
requirement and thus,
1. Increases accuracy and productivity.
2. Reduces cost of production, set up time and
scrap.
3. Reduces direct labour and workpiece.
4. Make design changes and prototypes making
easy
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
12. Industrial robots
Even robots have been designed by using CAD &
CAM methods and controlled by using languages
VAL, ROBEX, AML, HELP etc.
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
13. The Manufacturing Process
The Design Process
Synthesis
Analysis The CAD Process
The CAM Process
Design
needs
Design
definitions,
specifications,
and
requirements
Collecting
relevant design
information and
feasibility study
Design
conceptualization
Design
modeling and
simulation
Design
analysis
Design
optimization
Design
evaluation
Design
documentation
and
communication
Process
planning
Order
materials
Design and
procurement
of new tools
Production
planning
NC, CNC, DNC
programming
Production
Quality
control
Packaging
Marketing
Shipping
Typical Product Life Cycle
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
14. CAD/CAM and the new Environment
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
15. Implementation of a Typical CAD Process on a
CAD/CAM system
Delineation of
geometric model
Definition translator
Geometric model
Design and
Analysis algorithms
Drafting and
detailing
Documentation
To CAM Process
Interface algorithms
Design changes
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
16. AUTOMATION
It deals with application of mechanical, electronic,
computer and information technology based systems
to operate & control production.
CAD & CAM are parts of AUTOMATION.
There are 3 types of AUTOMATION:-
1. Fixed Automation
2.Programmable Automation
3. Flexible Automation
Industries select a type of automation according to its
different batches of production.
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
17. A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
BENEFITS OF CAD/CAM
• To increase productivity of the designer
•To improve quality of the design
•To improve communications
•To create a manufacturing database
•To create and test toolpaths and optimize them
•To help in production scheduling and MRP models
•To have effective shop floor control
18. Advantages of CAD/CAM systems
Greater flexibility.
Reduced lead times.
Reduced inventories.
Increased Productivity.
Improved customer
service.
Improved quality.
Improved
communications with
suppliers.
• Better product
design.
• Greater
manufacturing
control.
• Supported
integration.
• Reduced costs.
• Increased utilization.
• Reduction of
machine tools.
• Less floor space.A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
