CNC1.ppt

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Prepared by

Revanasiddheswara. K

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Motivation and uses

To manufacture complex curved geometries in 2D or 3D

was extremely expensive by mechanical means which

usually would re!uire complex "igs to control the cutter

motions#

$achining components with repeatable accuracy

%nmanned machining operations

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Advantages of CNC

& 'asier to program(

& 'asy storage of existing programs(

& 'asy to change a program

& )voids human errors

& safer to operate

& *omplex geometry is produced as cheaply as simple ones

& %sually generates closer tolerances than manual machines

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+ertical $illing machine architecture

Conventional milling machines

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Types of CNC machines

Based on Motion Type:

Point&to&Point or *ontinuous path

Based on Control Loops:

,pen loop or *losed loop

Based on Power Supply:

'lectric or -ydraulic or Pneumatic

Based on Positioning System

ncremental or )bsolute

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/asic *0* Principles1 %sing a vertical mill

machining center as an

example there are typically

three linear axes of motion.

'ach is given an alphabeticdesignation or address. The

machine table motion side to

side is called the 45 axis.

Table movement in and out

is the 65 axis while headmovement up and down the

column is the 75 axis.

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/asic *0* Principles

*oordinates 8ystem

Absolute Coordinate System Incremental Coordinate Syst

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Basic CNC Principles

All computer controlled machines are able to accurately andrepeatedly control motion in various directions. Each of thesedirections of motion is called an axis. Dependin on themachine type there are commonly t!o to "ve axes.

Additionally# a CNC axis may be either a linear axis in !hich

movement is in a straiht line# or a rotary axis !ith motionfollo!in a circular path.

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Basic CNC Principles

If a rotary table is added to the machine table#then the fourth axis is desinated the $b% axis.

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-ow *0* 9or:s

1 *ontrolled by ; and $ codes.

1 These are number values and co&ordinates.

1 'ach number or code is assigned to aparticular operation.

1 Typed in manually to *)D by machine

operators.1 ;

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=eatures of *0* $achinery

1 The tool or material moves.

1 Tools can operate in >&? axes.

1 @arger machines have a machine control unit$*%# which manages operations.

1 $ovement is controlled by a motors actuators#.

1 =eedbac: is provided by sensors transducers#1 Tool magaAines are used to change tools

automatically.

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Tools

1 $ost are made from

high speed steel -88#

tungsten carbide or ceramics.1 Tools are designed to direct waste away from

the material.

1 8ome tools need coolant such as oil to protectthe tool and wor:.
http://images.google.co.uk/imgres?imgurl=http://www.simplycnc.com/image/wm16.gif&imgrefurl=http://www.simplycnc.com/&h=445&w=343&sz=55&hl=en&start=5&um=1&tbnid=Il_lh_ZafVFP0M:&tbnh=127&tbnw=98&prev=/images%3Fq%3Dcnc%2Bmilling%2Bmachine%2Btools%26svnum%3D10%26um%3D1%26hl%3Den

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Tool Paths *utting

and Plotting $otions1 Tool paths describes the route the cutting tool ta:es.

1 $otion can be described as point to point straight cutting orcontouring.

1 8peeds are the rate at which the tool operates e.g. rpm.

1 =eeds are the rate at which the cutting tool and wor: piecemove in relation to each other.

1 =eeds and speeds are determined by cutting depth material and

!uality of finish needed. e.g. harder materials need slowerfeeds and speeds.

1 Rouging cuts remove larger amounts of material than finishingcuts.

1 Rapid traversing allows the tool or wor: piece to move rapidly

when no machining is ta:ing place.

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Manual NC programming

Part programB ) computer program to specify

& 9hich tool should be loaded on the machine spindle(

& 9hat are the cutting conditions speed feed coolant ,0C,== etc#

& The start point and end point of a motion segment

& how to move the tool with respect to the machine.

Standard Part programming languageB R8 2E&D ;erber ;0&code#

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History of CNC

The R82E&D is a wordaddress format

'ach line of program FF > block

'ach bloc: is composed of several instructions or words#

8e!uence and format of wordsB

03 ;2 4G>.E 6G>.E 7G>.E >.E H>.E K>.E =3.2 8E TE $2

se!uence no

preparatory function

destination coordinates dist to center of circle

feed rate spindle speed

tool

,ther function

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Manual Part Programming !ample

Tool siAe F I.2? inch

=eed rate F J inch per minute

*utting speed F 3II rpm

Tool start positionB 2.I 2.I

Programming in inches

E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3pE

p?

$otion of toolB

pIp>p2p3pEp?p>pI

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8pindle **9

E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3pE

p?

"# Set up the programming parameters

0I>I ;I ;LI ;LE ;L $IE

Programming in inches

%se absolute coordinates

8pindle speed in rpm

=eed in ipm

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=lood coolant ,0

E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

$# Set up the machining conditions

0I2I ;> ;? =J.I 83II T>II> $IM

$achine moves in 46&plane

=eed rate

Tool no.

8pindle speed

%se full&circle interpolation

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E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

%# Move tool from p& to p" in straight line

0I3I ;I> 43.M? 63.JLM

@inear interpolation

target coordinates

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E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

'# Cut profile from p" to p$

0IEI ;I> 43.M? 6L.>2?


target coordinates

0IEI ;I> 6L.>2?

4&coordinate does not changeno need to program it

or

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E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

(# Cut profile from p$ to p%

0I?I ;I> 4?.J3E 6L.>2?


target coordinates

>5

p3

.>2?

x y#

J.? L#

y F L G I.>2? F L.>2?

J.? & x#2G I.>2?2F > & I.>2?#2

x F ?.J3E

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coordinates of center of circleE E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

)# Cut along circle from p% to p'

0IJI ;I3 4.3JJ 6L.>2? J.? HL.I

circular interpolation **9 motion

target coordinates

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E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

*# Cut from p' to p(

0II ;I> 4L.3I2

target coordinates 6 is unchanged#


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E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

+# Cut from p( to p"

0IMI ;I> 43.M? 63.JLM

target coordinates see step 3#


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E E#

2 2#

?5

pI

p>

p2

?5

2.?5

>5

E?

p3 pE p?

,# -eturn to home position. stop program

0ILI ;I> 42.I 62.I $3I

end of data

target coordinates see step 3#


0>II $II

program stop

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*0* Programming /asics

1 *0* instructions are called part program commands.

1 9hen running a part program is interpreted one command line

at a time until all lines are completed.

1 *ommands which are also referred to as bloc:s are made upof words which each begin with a letter address and end with a

numerical value.

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*0* Programming /asics

1 'ach letter address relates to a specific machine function. ;5

and $5 letter addresses are two of the most common. ) ;5

letter specifies certain machine preparations such as inch or

metric modes or absolutes versus incremental modes.

1 ) $5 letter specifies miscellaneous machine functions and

wor: li:e onCoff switches for coolant flow tool changing or

spindle rotation. ,ther letter addresses are used to direct awide variety of other machine commands.

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CNC programming

mportant things to :nowB

1 *oordinate 8ystem

1 %nits incremental or absolute positioning

1 *oordinatesB 467 R4R6R7

1 =eed rate and spindle speed

1 *oolant *ontrolB ,nC,ff =lood $ist

1 Tool *ontrolB Tool and tool parameters

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1 Programming consists of a series of instructions in form of letter codes

1 Preparatory *odesB

1 ; codes& nitial machining setup and establishing operating conditions

1 0 codes& specify program line number to executed by the $*%

1 )xis *odesB 467 & %sed to specify motion of the slide along 4 6 7

direction

1 =eed and 8peed *odesB = and 8& 8pecify feed and spindle speed

1 Tool codesB T N specify tool number

1 $iscellaneous codes N $ codes =or coolant control and other activities

CNC programming

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Programming Key @etters

1 , & Program number %sed for program identification#

1 0 & 8e!uence number %sed for line identification#

1 ; & Preparatory function

1 4 & 4 axis designation



1 R & Radius designation

1 = N =eed rate designation

1 8 & 8pindle speed designation1 - & Tool length offset designation

1 D & Tool radius offset designation

1 T & Tool Designation

1 $ & $iscellaneous function

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'xplanation of commonly used ;

codes1 ;II N Preparatory code to control final position of the tooland not concerned with the path that is followed in arriving at

the final destination.

1 ;I> N Tool is re!uired to move in a straight line connectingcurrent position and final position. %sed for tool movement

without any machining& point to point control. linear

interpolation#

1 ;I2 N Tool path followed is along an arc specified by H andK codes. circular interpolation#

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Table of mportant ; codes

;II Rapid Transverse

;I> @inear nterpolation;I2 *ircular nterpolation *9

;I3 *ircular nterpolation **9

;> 46 Plane;>M 47 Plane;>L 67 Plane

;2IC;I nch units

;2>C;> $etric %nits;EI *utter compensation cancel

;E> *utter compensation left

;E2 *utter compensation right

;E3 Tool length compensation plus#

;E3 Tool length compensation plus#

;EE Tool length compensation minus#

;EL Tool length compensation cancel

;MI *ancel canned cycles

;M> Drilling cycle

;M2 *ounter boring cycle

;M3 Deep hole drilling cycle

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Table of mportant $ codes1 $II Program stop

1 $I> ,ptional program stop

1 $I2 Program end

1 $I3 8pindle on cloc:wise

1 $IE 8pindle on countercloc:wise1 $I? 8pindle stop

1 $IJ Tool change

1 $IM *oolant on

1$IL *oolant off

1 $>I *lamps on

1 $>> *lamps off

1 $3I Program stop reset to start

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&ptimum machine prorammin re'uires consideration ofcertain machine operatin parameters includin() Positionin control) Compensations

) Special machine features

Positionin control is the ability to proram tool and machineslide movement simultaneously alon t!o or more axes.Positionin may be for point*to*point movement or for

contourin movement alon a continuous path. Contourinre'uires tool movement alon multiple axes simultaneously.+his movement is referred to as $Interpolation% !hich is theprocess of calculatin intermediate values bet!een speci"cpoints alon a prorammed path and outputtin those values asa precise motion. Interpolation may be linear havin ,ust a start

and end point alon a straiht line# or circular !hich re'uires an

Proram Command Parameters

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Rules for programming

Block Format

N-/ 01- 2-.1 3-.1 41.-5/ 6/

Sample Block) 7estrictions on CNC bloc8s) Each may contain only one tool move) Each may contain any number of non*tool move 0*codes

) Each may contain only one feed rate) Each may contain only one speci"ed tool or spindlespeed) +he bloc8 numbers should be se'uential) Both the proram start 9a and the proram number

must beindependent of all other commands :on separate lines;

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APT Programming !ampleCylindrical Part

25

22.5

17.5

20

Raw $aterial

=inished Part

70

0

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APT Programming !ample /Cylindrical Part)

&11-

N111/ 0/N11-1 +11N1151 0/< 011 25=.11 41.1 S/11 >1?N111 01- 2*1.51 6-11

N11?1 011 45.1N11/1 2/1.1 4/1.1N11=1 +1?1?N11

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APT Program 0nterpretation

O0013

Program identification number

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1&&"%

N&&&( 2(%

To cancel any previous working 3ero point

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1&&"%

N&&&( 2(%

N&&"& T&%&%

N&&"& Se4uence number

T&%&% Select tool number %&%

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1&&"%

N&&&( 2(%

N&&"& T&'&'

N&&$& 2(* 2&& 5$)#& 6& S(&& M&'

2(* To set the working 3ero point as saved

2&& -apid movement /no cutting75$)#&Xlocation /as a diameter8 "% form 3ero7

6&Zlocation

S(&& Spindle speed is (&& rpm

M&' -otate spindle counterclockwise


!

"

II# Gve

Gve

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O0013

N0005 G53

N0010 T0404N0020 G57 G00 X26.00 Z0.0 S500 M04N0030 G01 X-0.20 F100

2&" 9inear interpolation /cutting7

5:$& Move only in ! direction until you pass the center by " mm /facing7

;"&& Set feed rate to "&& mm

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O0013N0005 G53

N0010 T0404

N0020 G57 G00 X26.00 Z0.0 S500 M04N0030 G01 X-0.20 F100N0040 G00 Z2.0

2&& Move rapidly away from work piece /no cutting7

6$#& the movement is $ mm away from the face#


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O0013

N0005 G53

N0010 T0404

N0020 G57 G00 X26.00 Z0.0 S500 M04N0030 G01 X-0.20 F100N0040 G00 Z2.0N0050 X50.0 Z50.0

2o to a safe location away from theworkpiece =! > (& /$( from 3ero7. 3 > (&? to

change the tool#


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O0013

N0005 G53N0010 T0404N0020 G57 G00 X26.00 Z0.0 S500 M04

N0030 G01 X-0.20 F100N0040 G00 Z2.0N0050 X50.0 Z50.0N0060 T0404

T&'&' Select tool number '&'


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O0013N0005 G53

N0010 T0404N0020 G57 G00 X26.00 Z0.0 S500 M04N0030 G01 X-0.20 F100N0040 G00 Z2.0N0050 X50.0 Z50.0N0060 T0404N0070 G57 G00 X22.50 Z2.0 S500

2(* PS&2&& -apid movement /no cutting7

5$$#(&Xlocation /as a diameter8 ""#$( form 3ero7

6$#&Zlocation

S(&& Spindle speed is (&& rpm


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1&&"%

N&&&( 2(%

N&&"& T&'&'

N&&$& 2(* 2&& 5$)#&& 6& S(&& M&'

N&&%& 2&" 5:$& ;"&&

N&&'& 2&& 6$#&

N&&(& 5(& 6(&

N&&)& T&'&'

N&&*& 2(* 2&& 5$(#&& 6$#& S(&& M&'

N&&+& 2&" 6:%& ;"&&

2&" 9inear interpolation /cutting7

6:%& Move only in 3 direction /e!ternal turning7

;"&& Set feed rate to "&& mm

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1&&"%

N&&&( 2(%

N&&"& T&'&'

N&&$& 2(* 2&& 5$)#&& 6& S(&& M&'

N&&%& 2&" 5:$& ;"&&

N&&'& 2&& 6$#&

N&&(& 5(& 6(&

N&&)& T&'&'

N&&*& 2(* 2&& 5$(#&& 6$#& S(&& M&'

N&&+& 2&" 5$$#( 6:*& ;"&&

N&&,& 2&& 5$%#& 6$#& S(&&

2&& Move rapidly away from work piece /no cutting7 to

location !> $%#& /""#(& from 3ero7 and 3 > $#


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1&&"%

N&&&( 2(%N&&"& T&'&'

N&&$& 2(* 2&& 5$)#&& 6& S(&& M&'

N&&%& 2&" 5:$& ;"&&

N&&'& 2&& 6$#&

N&&(& 5(& 6(&

N&&)& T&'&'

N&&*& 2(* 2&& 5$(#&& 6$#& S(&& M&'

N&&+& 2&" 5$$#( 6:*& ;"&&

N&&,& 2&& 5$)#& 6$#& S(&&

N&"&& 2+' 5"*#( 6:$& @&>$&& @$>$&& @%>)(&

2+' Turning cycle for machining the step

5"*#( final diameter

6:$& length of step is $& mm

@&>$&& ;inish allowance in 5 direction /$ mm7@$>$&& ;inish

allowance in 6 direction /$ mm7

@%>)(& @epth of cut in each pass /)( mm7


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1&&"%

N&&&( 2(%

N&&"& T&'&'

N&&$& 2(* 2&& 5$)#&& 6& S(&& M&'

N&&%& 2&" 5:$& ;"&&

N&&'& 2&& 6$#&N&&(& 5(& 6(&

N&&)& T&'&'

N&&*& 2(* 2&& 5$(#&& 6$#& S(&& M&'

N&&+& 2&" 5$$#( 6:*& ;"&&

N&&,& 2&& 5$)#& 6$#& S(&&

N&"&& 2+' 5"*#( 6:$& @&>$&& @$>$&& @%>)(&

N&""& 2&& 6$#&

2&& Move rapidly away from workpiece /no cutting7

6$#& the movement is $ mm away from the face#


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1&&"%N&&&( 2(%

N&&"& T&'&'

N&&$& 2(* 2&& 5$)#&& 6& S(&& M&'

N&&%& 2&" 5:$& ;"&&

N&&'& 2&& 6$#&N&&(& 5(& 6(&

N&&)& T&'&'

N&&*& 2(* 2&& 5$(#&& 6$#& S(&& M&'

N&&+& 2&" 5$$#( 6:*& ;"&&

N&&,& 2&& 5$)#& 6$#& S(&&N&"&& 2+' 5"*#( 6:$& @&>$&& @$>$&& @%>)(&

N&""& 2&& 6$#&

N&"$& 5(& 6(&

5(& 6(& Move to the tool changing location


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1&&"%

N&&&( 2(%

N&&"& T&'&'

N&&$& 2(* 2&& 5$)#&& 6& S(&& M&'

N&&%& 2&" 5:$& ;"&&

N&&'& 2&& 6$#&N&&(& 5(& 6(&

N&&)& T&'&'

N&&*& 2(* 2&& 5$(#&& 6$#& S(&& M&'

N&&+& 2&" 5$$#( 6:*& ;"&&

N&&,& 2&& 5$)#& 6$#& S(&&

N&"&& 2+' 5"*#( 6:$& @&>$&& @$>$&& @%>)(&

N&""& 2&& 6$#&

N&"$& 5(& 6(& T&&

N&"%& M%&

M%& Program nd


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Programming!ample

Raw $aterial =inishedPart

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Programming !ample

2(( 5$&& +&

Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&

N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

N&&* 2&" 5%& )& 6:( 5;eed *(

N&&+ 2&" 5& '& 6:( 5;eed *(

N&&, 2&" 5& & 6:( 5;eed *(

N&"& 2+" -% , N* 6:(

N&"" M&(

N&"$ M&$

!

y

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Programming!ample

Tool Change2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&

N&&+ 2&" 5(& "( 6:"& 6;eed *(N&&, 2&" 5(& "( 6"& 6;eed "(&

N&"& 2&" 5(& '( 6"& 6;eed "(&

N&"" 2&" 5(& '( 6:"& 6;eed *(

N&"$ 2&" 5(& '( 6"& 6;eed "(&

N&"% M&(

N&"' M&$

!

y

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Program 0nterpretation

G55 X200 !0

Setting the datum to the lower left corner of the work piece

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G55 X200 !0"ro#ram 1

Program 0dentification Number

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2(( 5$&& +&

Program "

N&&" M&) T"

N&&" Se4uence Number

M&) Tool Change /nd Mill with

@iameter>"$mm

T" Tool Number

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G55 5$&&!0"ro#ram 1N001 M06 T1N002 M03 rpm 400

Start rotating the spindle clockwise with '&&

rpm

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G55 5$&&!0"ro#ram 1N001 M06 T1

N002 M03 rpm 400N003 G01 X-! 0 Z0 XFee$ 150

2o to Safe Position with feed "(&mm

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2(( 5$&& +&

Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&N&&' 2&" 5:+ & 6:( 6;eed "(&

9ower the end mill to determine the depth of

cut

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2(( 5$&& +&Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&N&&( 2&" 5*& & 6:( 5;eed *(

Move from the lower left corner

of the work piece to the right

lower one cutting withfeed>*(mm

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2(( 5$&& +&

Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&N&&' 2&" 5:+ & 6:( 6;eed "(&

N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

Move from the lower left corner of thework piece to the right lower one

cutting with feed>*(mm

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2(( 5$&& +&

Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

N&&* 2&" 5%& )& 6:( 5;eed *(

Cutting the hori3ontally up to5>%&

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2(( 5$&& +&Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

N&&* 2&" 5%& )& 6:( 5;eed *(

N&&+ 2&" 5& '& 6:( 5;eed *(

Cutting to 5>& B >'&

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2(( 5$&& +&Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

N&&* 2&" 5%& )& 6:( 5;eed *(

N&&+ 2&" 5& '& 6:( 5;eed *(

N&&, 2&" 5& & 6:( 5;eed *(

Complete the countering

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2(( 5$&& +&Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

N&&* 2&" 5%& )& 6:( 5;eed *(

N&&+ 2&" 5& '& 6:( 5;eed *(

N&&, 2&" 5& & 6:( 5;eed *(N&"& 2+" -% , N* 6:(

-epeat * times blocks from N&&% to N&&,

with incremental offset of 6>:(

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2(( 5$&& +&

Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&

N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

N&&* 2&" 5%& )& 6:( 5;eed *(

N&&+ 2&" 5& '& 6:( 5;eed *(N&&, 2&" 5& & 6:( 5;eed *(

N&"& 2+" -% , N* 6:(

N&"" M&(

Spindle 1ff

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2(( 5$&& +&Program "

N&&" M&) T"

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5:+ & 6:( 6;eed "(&N&&( 2&" 5*& & 6:( 5;eed *(

N&&) 2&" 5*& )& 6:( 5;eed *(

N&&* 2&" 5%& )& 6:( 5;eed *(

N&&+ 2&" 5& '& 6:( 5;eed *(

N&&, 2&" 5& & 6:( 5;eed *(

N&"& 2+" -% , N* 6:(

N&"" M&(

N&"$ M&$

nd Program

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Tool Change

Changing the tool

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Tool Change

2(( 5$&& +&

Setting the datum to the lower left corner of the work piece

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Tool Change

2(( 5$&& +&

Program $

Program 0dentification Number

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&" Se4uence Number

M&) Tool Change /@rill with

@iameter>)mm

T$ Tool Number

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$N&&$ M&% rpm '&&

Start rotating the spindle clockwise with '&&

rpm

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&N&&% 2&" 5:+ & 6& 5;eed "(&

2o to Safe Position with feed "(&mm

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&

Stop above the center of the first hole

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(&

6;eed "(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

Start @rill the first hole

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

-etract to a position above the hole

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&

Stop above the center of the second hole

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed

"(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&N&&+ 2&" 5(& "( 6:"& 6;eed *(

@rill the second hole

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Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&

N&&+ 2&" 5(& "( 6:"& 6;eed *(

N&&, 2&" 5(& "( 6"& 6;eed "(&

-etract to a position above the second hole

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Tool Change

2(( 5$&& +&

Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&

N&&+ 2&" 5(& "( 6:"& 6;eed *(N&&, 2&" 5(& "( 6"& 6;eed "(&

N&"& 2&" 5(& '( 6"& 6;eed "(&

Stop above the center of the third hole

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Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&

N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&

N&&+ 2&" 5(& "( 6:"& 6;eed *(

N&&, 2&" 5(& "( 6"& 6;eed "(&N&"& 2&" 5(& '( 6"& 6;eed "(&

N&"" 2&" 5(& '( 6:"& 6;eed *(

@rill the third hole

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Tool %&a'#eG55 X200 !0"ro#ram 2N001 M06 T2N002 M03 rpm 400N003 G01 X-! 0 Z0 XFee$ 150

N004 G01 X20 15 Z10 XFee$ 150 ZFee$ 150N005 G01 X20 15 Z-10 ZFee$ 75N006 G01 X20 15 Z10 ZFee$ 150N007 G01 X50 15 Z10 ZFee$ 150N00! G01 X50 15 Z-10 ZFee$ 75

N00( G01 X50 15 Z10 ZFee$ 150N010 G01 X50 45 Z10 ZFee$ 150N011 G01 X50 45 Z-10 ZFee$ 75N012 G01 X50 45 Z10 ZFee$ 150

-etract to a position above the third hole

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Tool %&a'#e

G55 X200 !0"ro#ram 2N001 M06 T2N002 M03 rpm 400N003 G01 X-! 0 Z0 XFee$ 150

N004 G01 X20 15 Z10 XFee$ 150 ZFee$ 150N005 G01 X20 15 Z-10 ZFee$ 75N006 G01 X20 15 Z10 ZFee$ 150N007 G01 X50 15 Z10 ZFee$ 150N00! G01 X50 15 Z-10 ZFee$ 75

N00( G01 X50 15 Z10 ZFee$ 150N010 G01 X50 45 Z10 ZFee$ 150N011 G01 X50 45 Z-10 ZFee$ 75N012 G01 X50 45 Z10 ZFee$ 150N013 M05

Spindle off

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Tool Change

2(( 5$&& +&Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&

N&&+ 2&" 5(& "( 6:"& 6;eed *(

N&&, 2&" 5(& "( 6"& 6;eed "(&

N&"& 2&" 5(& '( 6"& 6;eed "(&

N&"" 2&" 5(& '( 6:"& 6;eed *(

N&"$ 2&" 5(& '( 6"& 6;eed "(&

N&"% M&(

N&"' M&$

nd Program

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Tool Change

2(( 5$&& +&Program $

N&&" M&) T$

N&&$ M&% rpm '&&

N&&% 2&" 5:+ & 6& 5;eed "(&

N&&' 2&" 5$& "( 6"& 5;eed "(& 6;eed "(&N&&( 2&" 5$& "( 6:"& 6;eed *(

N&&) 2&" 5$& "( 6"& 6;eed "(&

N&&* 2&" 5(& "( 6"& 6;eed "(&

N&&+ 2&" 5(& "( 6:"& 6;eed *(

N&&, 2&" 5(& "( 6"& 6;eed "(&

N&"& 2&" 5(& '( 6"& 6;eed "(&

N&"" 2&" 5(& '( 6:"& 6;eed *(

N&"$ 2&" 5(& '( 6"& 6;eed "(&

N&"% M&(

N&"' M&$

nd Program

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Two computer&based systems which impact the use of *0* technology arecomputer aided design and computer aided manufacturing.

) computer aided design or *)D system uses computers to graphically create

product designs and models. These designs can be reviewed revised and

refined for optimum end use and application. ,nce finaliAed the *)D design

is then exported to a computer aided manufacturing or *)$ system.*)$ systems assist in all phases of manufacturing a product including

process planning production planning machining scheduling management

and !uality control.

CADCA>

Automatic Part Programming

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g g

8oftware programs can automatic generation of *0* data

$a:e 3D model

Define Tool

*0* data

8imulate

cutting

Automatic part programming and @NC

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+ery complex part shapesvery large 0* program

0* controller memory may not handle -%;' part program

computer feeds few bloc:s of

0* program to controller

9hen almost all bloc:s executed

controller re!uests more bloc:s

Summary

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*0* machines allow precise and repeatable control in machining

*0* lathes $illing machines etc. are all controlled by 0* programs

0* programs can be generated manually automatically

)dditional referencesB R82ED code descriptions

Date post:	21-Feb-2018
Category:	Documents
Upload:	revana-kadur
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