CAD
Computer Aided
Design is the process of creating, modifying and refining using digital
computers which accepts data in the binary form.
Example:
stress-strain
analysis,
Heat
transfer problems,
Von mises stress.
The person
one who enters command to the system to perform specific operation is called as
programmer.
As the
person enters commands to the system, the CPU calculates required calculations
with the help of automatic logic unit.
After the
calculation it is represented on the screen through CRT. in inorder to perform
CAD operations, it is essential to have some hardware and softwares.
A software
which allows programmer to give command and represent it as an object on the
screen is called as CAD package.
Example: Catia,
AutoCAD, Pro-E, Solidworks, Solid edge, Ansys, Hypermesh.
CAM
Computer Aided
Manufacturing makes use of digital computers to make process planning, production
scheduling, routing, MRP-1, MRP-2, floor control and etc.,
CAM
applications are of 2 types as
follows:
(a) Process
monitoring and
(b) Controlling
In this,
computers are used directly with the manufacturing or production location.
Process monitoring: It is a
single way communication system where information flows takes place from
production location to the monitoring location.
Here, even
though monitoring is done with the computer but controlling actions taken by
the human being.
Process controlling: it is a two
way communication channel where information flows takes place from
manufacturing space to monitoring space. but, one more element is provided to
take control action to the process if any error occurs.
Functions of CAM:
Process
planning,
Production
scheduling,
Bill of
material
Manufacturing
resource planning (MRP-1),
Material
requirement planning (MRP-2),
NC control,
CNC control,
DNC control,
Record file
control,
System aided
applications (SAP),
Routing.