1. What is CAD?
According to the term CAD it stands for Computer Aided Designs and Computer Aided Drafting.
before CAD engineers have to do all the drawings with their hands but after the introduction
of CAD in Mechanical industry everything changed and become easier.
CAD works in three ways
a. What is Drawing
drawing is a rough sketch which gives some message or information about product
b. What is Drafting?
drafting is a language of engineers with exact scaling, measurements , accuracy and with standards like
ANSI: American national standard institute
ISO : international standardization for organization
ASEE: American society for electrical engineers & etc
c. What is Design
design is a complete Prototype with analysis and manufacturing in electrical and electronics designing means simulation or analysis
2. What does mechanical engineer do in CAD?
mechanical engineer do drafting and design and proto type testing ( analysis) operations in CAD.
3. Why to use CAD? & Advantages of CAD over manual drafting.
Easy to draw – we don’t have to use our hand for manual drawing for hours
Less time consumption– obviously that’s why we use it
Accuracy and precision – this is the point where everything changes . A man’s hand can do mistakes not a machine or software that is the main part of CAD for which it is preferred
Quick access – we can store it digitally better than storing hand written drawings and data in a pile of files.
Easier modification – second most important feature of CAD is that if there is a mistake in design found later still you can fix it easily without getting mess in the previous data as compared to hand drawn sheets and over writing and over drawing
Good appearance in output – gives good visual before the actual manufacturing of the designed product
Storage facility – we all know we can store it in any storage devices like Pendrives , hard disk and cloud based storage more secure and space efficient.
Less prone to error – Here CAD software auto detect some of the errors and recommend user to correct it which is very time saving specially when you are working a very big project or design
Easy to share Accurate information – yes we can easily share out CAD designs online but with physical document they have to be couriered.
4. APPLICATIONS OF CAD IN MECHANICAL ENGINEERING
Aerospace and Air craft Industry
Tool and die making Industry
Die manufacturing Industry
Welding and cutting Industry
Jigs and fixture manufacturing Industry and etc
5. CAD Softwares used in Industries