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CAD CAD- computer aided designing

By which we can create model as for the requirement by the help

of cad . Ex-AutoCAD, master CA, !" ,CA#$A

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CACam- computer aided manufacturing

By which we can designing the model and create the program for

machining .Ex- aster CA, CA#$A ,!", %ro-E

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C&-&'D$(A#E )*)#E

$t means we can define theposition of a ob+ect . Co-ordinate

system

Cartesian polar

absolute incremental

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CA'#E)$A(

$n this co-ordinate system all the co-ordinate is calculated from theorigin . ( the origin is not fixed . By the help of x,y n axis .

$t is diided in two parts. Absolute co-ordinate system.

$ncremental co-ordinate system.

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%&A' %olar co-ordinate system uses a distance and a angle with reference

to the preious

point to locate a point ./ow to write polar co-ordinate system

0distance1angle

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AB)&!#E $n this co-ordinate system origin is fixed and we hae to calculate

all the co-ordinates from an origin.

2e hae to put the co-ordinates in the form of 3x4 alue, 3y4 alue.

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$(C'EE(#A $n this co-ordinate system origin is changeable and if we are going

to next point then that preious point is our origin.

/ow to write $ncremental co-ordinate system0 3x4 alue, 3y4 alue

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A!#&CAD A!#&CAD $) A D'A2$(" )&5# 2A'E%AC6A"E

DE7E&%ED B* #/E C&%A(* A!#&DE)6 $( !.).A.$# $)

&(E &5 #/E &)# 2$DE* !)ED )&5# 2A'E 5&'C'EA#$(" D'A2$(" EA)$* A(D 8!$C6* .

C'EA#$&( &5 "E&E#'$C &DE$(" A&(" #/EE("$(EE'$(" A(A*)$) . E7A!A#E #/E DE)$"( A(D%'&D!CE D'A5#$(" 5&' A(5AC#!'$(" 2$#/ #/E /E%

&5 C&%!#E'. $# $) $(7E(#ED $( 9:;