1. TO
CAD / CAM

2.  Computer-aided design (CAD) is the use of computer
systems to assist in the creation, modification, analysis,
or optimization of a design.
 Computer-aided manufacturing (CAM) is the use of
computer systems to plan, manage, and control the
operations of a manufacturing plant through direct or
indirect computer interface with plant’s resources.

4. • Developing NC code requires an understanding of:
1. Part geometry
2. Tooling
3. Process plans
4. Tolerances
5. Fixturing
• Most CAD/CAM systems provide access to:
1. Part geometry
2. Tooling

5. •A set of tool paths and positions
can be automatically generated
•These paths can be edited and
modified
•These paths and instructions can
then be “posted” to a specific
machine

6. Before CAD After CAD

8. Computers can store and handle large
amount of engineering data which can be
used in various stages of design, process
planning , manufacturing , analysis etc
Complex geometrical shapes can be
visually inspected and checked using 3D
models .
Product design and development cycle can
be markedly reduced by using CAD which
in turn reduces lead time
Use of CAD tools improve productivity of the
design process.

9.  Modifying and improving models of the
components
 Colour selection of solid models .
 Getting the views of the product or
components from different angles and
different sections .
 Checking interference between mating parts
of an assembly .
 Stress analysis of machine components ,
building and bridges
 Preparing detailed components drawing and
assembly drawing

10.  Modifying and improving models of the
components
 Colour selection of solid models .
 Getting the views of the product or
components from different angles and
different sections .
 Checking interference between mating parts
of an assembly .
 Stress analysis of machine components ,
building and bridges
 Preparing detailed components drawing and
assembly drawing