Introduction to Computer aided Manufacturing (CAM) | Advantages Of CAM

Introduction to Computer aided Manufacturing (CAM)

The computer aided manufacturing implies manufacturing
itself, aided or controlled by computers. In a  wider
sense, it denotes all the activities in  the
manufacturing environment like use of computers in inventory
control, project management, material requirement
planning,data acquisition,testing and quality
control.Improved reliability in  view of  the
better manufacturing methods and controls at the
manufacturing stage,the  products  thus
manufactured as well as of the manufacturing system would be
highly reliable. Since most of the  components of a
 CAM  system would  include integrated
 diagnostics and   monitoring facilities, they
would require less  maintenance compared to the
conventional manufacturing methods. Because of the Computer
Numerical Control (CNC)  machines used in
 production and  the  part programs being
 made by the  stored geometry from the design
stage, the  scrap level  would  be
 reduced to  the minimum possible and  almost
no  rework would  be  necessary.

Fig. CAD Model and CNC Machined

 Since  all the  information and
 controlling functions are  attempted with the
 help  of the computer, a better management control
on the  manufacturing activity is possible. All the
 above  advantages when properly translated, would
 mean a  lower   total cost  and
 consequently, higher  final earnings.Therefore any
manufacturing activity in a production unit (job shop
production or mass scale  manufacture) can  get
 the  benefits of Computer  Aided
 Manufacturing. However, better results can  be
 obtained when the  design and   manufacturing
activities are  properly integrated. Also, when there is
 a  large variety of products or minor changes
required in the existing production programme, CAM can easily
manage the  necessary changes or

Following are  the  main advantages of
using CAM.

1. Greater design freedom
Any changes that are  required in design can  be
incorporated at any  design stage without worrying about
any  delays, since  there would  hardly be any
 in an integrated CAM environment.

2.  Increased productivity
In  view  of the  fact  that the
 total manufacturing activity is completely organized
through the  computer, it would  be  possible
to  increase the  productivity of the  plant.

3.  Greater operating flexibility
CAM enhances the  flexibility in  manufacturing
methods and  changing of product lines.

4. Shorter lead time
Lead  times in  manufacturing would  be
 greatly reduced.

The  integration of CAD and  CAM systems is called
Computer Integrated Manufacturing (CIM)  system. The
 role  of computer in  manufacturing may
 be  in  two  major groups namely
computer monitoring and  control of the
 manufacturing  process and  manufacturing
support applications, which  deal  essentially with
the  preparations for act  of manufacturing and
 post manufacture operations. Computers are  used
in controlling machine tools  and  other material
handling equipment.