CAD/CAM/CIM Presented by N.N.V. Krishna kanth I MBA ALIET

Cad and cam

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Presented byN.N.V. Krishna kanth


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• Design is the human power to conceive, plan, and realize products that serve human beings in the accomplishment of any individual or collective purpose.

What is Design?

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CAD• An electronic system using computers for

designing new parts or products or for modifying existing ones.

• Computer-aided design (CAD) is the use of computer systems to assist in the creation, modification, analysis, or optimization of a design.

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Introduction of CAD

• CAD consit’s of a powerful desktop computer and graphics software that enables designer to manipulate geometric shapes.

• It replaces the traditional drafting work done by a draftsman on a drafting board.

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Advantages of CAD• Saves time and money.• Eliminates prototype model building to prove the designs.• Allows designers to determine costs and test such variables as

stress, tolerance, product variability, interchangeability and serviceability.

• Low cost of design.• Eliminates manual drafting completely.• Easy to manipulate.• Makes review of numerous options in designs possible before

final commitments are made.• Faster development, better products and accurate flow of

information to other departments.• Product cost can be determined at the design stage itself.

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CAM• 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.

• When CAD information is translated into instructions for CAM the result of these two technologies is referred to as CAD/CAM system.

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Geometric modeling



Automated drafting

NC/CNC machines


Computer aided process planning

Factory management


• NC – Numerical Control• CNC – Computer Numerical control

CAD/CAM System

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Need for 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 tool paths and optimize them • To help in production scheduling and MRP models• To have effective shop floor control

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• Computer Integrated Manufacturing is a system which acts as a bridge or umbrella to integrate product design and engineering, process planning and manufacturing using computer systems.

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Management Information

System (MIS)



Top ManagementComputer Aided

Design (CAD)


Automated Storage and Retrieval System

(ASRS) and Automated Guided Vehicles (AGVs)

Computer Aided Manufacturing


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Tools of CAD/CAM

• AutoCAD (CAD)– Computer Aided Design or Computer Aided Drafting– For 2D and 3D design and drafting, developed and sold

by Autodesk, Inc. in 1982– Earlier primitive entities used such as lines, poly lines,

circles, arcs, and text – But now it has solid modeling and 3D tools– Has supported custom objects through its C++ API– Application Programming Interfaces (APIs) for

customization and automation– Include AutoLISP, Visual LISP, VBA, .NET and ObjectARX

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– Computer Aided Three-dimensional Interactive Application

– By the French company Dassault’s Systems – Created in the late 1970s and early 1980s to

develop Dassault's Mirage fighter jet – Adopted in the aerospace, automotive,

shipbuilding, and other industries

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CATIA• Modules of CATIA– Product Structure– Part Design– Assembly Design– Sketcher– Drafting (Interactive and Generative)– Wireframe and Surface– Freestyle Shaper– Digital Shape Editor– Knowledge ware– Photo Studio – 4D Navigator (including kinematics)– Manufacturing– Finite Element Analysis

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