CNC milling is developed a new technology for the mechanical engineers with the highly accuracy.The maximum accuracy of this CNC machine is up to 0.01 mm or 10 microns. The fanuc system is very easy as compare to other controls but i can say that if you will learn the fanuc system,it helps you to very easy as compare to other systems. In this ppt. all the operations and programmings of CnC milling are available. Some programming are very important just like how to make : 1. PcD 2. Ellipse 3.Origin at angle 4.Shift the origin 5.Facing,peck drilling,boring,threading etc.

1. Welcome toWelcome to
MILLING CNCMILLING CNC
(FANUC )(FANUC )

2. Difference Between Lathe & MillingDifference Between Lathe & Milling
Lathe Milling
Two axis Machine extendable to 5-
axis.
Three Axis Machine extendable to 6-
axis.
Generally cylindrical surfaces are
generated.
Generally flat or contoured surfaces
are generated.
Principal Motions:
Longitudinal (Z) & Transverse (X)
travel of Tool
Rotational Motion of Workpiece
about Z-axis.
Principal Motions:
Longitudinal (X), Transverse (Y) and
Vertical (Z) travel of Workpiece
Rotational Motion of Tool generally
about Z-axis.
Single Point Cutting tools are used. Multiple point cutting tools are used.
Consist of a turret to accommodate
number of tools. Upon indexing the
turret the tools are positioned to
work on the w/p clamped to the m/c
spindle.
Consists of a ATC to accommodate
number of tools. The tools are
changed automatically using a
different mechanisms.

3. Compare & Contrast Fanuc & HeidenhainCompare & Contrast Fanuc & Heidenhain
FanucFanuc HeidenhainHeidenhain
Program Logic & Structure for the both the systems are same only theProgram Logic & Structure for the both the systems are same only the
writing format is different.writing format is different.
Both uses G & M Codes for writing the programs.Both uses G & M Codes for writing the programs.
Standard slot milling, pocketStandard slot milling, pocket
milling cycles are not available.milling cycles are not available.
These are available as an standardThese are available as an standard
G-Code cycles.G-Code cycles.
Standard functions forStandard functions for
mirroring, Corner rounding,mirroring, Corner rounding,
corner chamfering etc are notcorner chamfering etc are not
available.available.
Standard functions for mirroring etcStandard functions for mirroring etc
are available.are available.
Program number starts with theProgram number starts with the
letter ‘O’letter ‘O’
Doesn’t.Doesn’t.
Requires block termination orRequires block termination or
end of block ‘ ; ’end of block ‘ ; ’
Doesn’tDoesn’t
Requires ‘.’ in the numericalRequires ‘.’ in the numerical
values such as 20.15 or 28.0values such as 20.15 or 28.0
Doesn’tDoesn’t

4. Contour programming (RECTANGULARContour programming (RECTANGULAR
CORE)CORE)
O0001O0001
G00 G90 G49 G17 G21 G40 G15 G80 G53G00 G90 G49 G17 G21 G40 G15 G80 G53
Z0Z0
T1T1
M03 S1000M03 S1000
G00 G43 H1 Z50G00 G43 H1 Z50
G00 G54 X-45 Y0G00 G54 X-45 Y0
G00 Z-1G00 Z-1
G01 G41 D1 X-25 Y0 F500G01 G41 D1 X-25 Y0 F500
X-25 Y25X-25 Y25
X25 Y25X25 Y25
X25 Y-25X25 Y-25
X-25 Y-25X-25 Y-25
X-25 Y5X-25 Y5
G40 Z5G40 Z5
G00 Z50G00 Z50
M30M30
60
50
0,0
1
60
50

5. Contour programmingContour programming
(RECTANGULAR CORE) Incremental(RECTANGULAR CORE) Incremental
 O0001O0001
 G00 G90 G49 G17 G21 G40 G15 G80 G53 Z0G00 G90 G49 G17 G21 G40 G15 G80 G53 Z0
 T1T1
 M3 S1000M3 S1000
 G0 G43 H1 Z50G0 G43 H1 Z50
 G0 G54 X- 45 Y0G0 G54 X- 45 Y0
 G0 Z-1G0 Z-1
 G01 G41 D1 X-25 Y0 F500G01 G41 D1 X-25 Y0 F500
 G91 X0 Y25G91 X0 Y25
 X50 Y0X50 Y0
 X0 Y-50X0 Y-50
 X-50 Y0X-50 Y0
 X0 Y25X0 Y25
 X-15 Y0X-15 Y0
 G0 G90 G40 Z50G0 G90 G40 Z50
 M30M30
60
50
0,0
1
60
50

6. Sample Program For Drill
O0002
G00 G90 G49 G17 G21 G40 G15 G80 G53 Z0G00 G90 G49 G17 G21 G40 G15 G80 G53 Z0
T1T1
M03 S1000M03 S1000
G00 G43 H1 Z50G00 G43 H1 Z50
G00 G54 X-20 Y-20G00 G54 X-20 Y-20
G01 G98 G83 Z-10 Q1 R2 F50G01 G98 G83 Z-10 Q1 R2 F50
X-20 Y20X-20 Y20
X20 Y20X20 Y20
X20 Y-20X20 Y-20
G00 G40 G80 Z50G00 G40 G80 Z50
M30;M30;
60
0,0
60
40

7. Sample Program For Polar Drill
O0003
G00 G90 G49 G17 G21 G40 G15 G80 G53 Z0G00 G90 G49 G17 G21 G40 G15 G80 G53 Z0
T1T1
M03 S1000M03 S1000
G00 G43 H1 Z50G00 G43 H1 Z50
G00 G54 G16 X20 Y0G00 G54 G16 X20 Y0
G01 G98 G83 Z-10 Q1 R2 F50G01 G98 G83 Z-10 Q1 R2 F50
X20 Y90X20 Y90
X20 Y180X20 Y180
X20 Y270X20 Y270
G00 G40 G80 G15 Z50G00 G40 G80 G15 Z50
M30M30
60
0,0
60
0,0

8. Contour programming withContour programming with
incrementalincremental waywayO0004O0004
G90 G49 G17 G0 G21 G40 G15 G80 G53 Z0G90 G49 G17 G0 G21 G40 G15 G80 G53 Z0
T1T1
M3 S1000M3 S1000
G0 G43 H1 Z50G0 G43 H1 Z50
#1=0#1=0
N10 G00 G54 X-45 Y0N10 G00 G54 X-45 Y0
G00 Z-#1G00 Z-#1
G01 G41 D1 X-25 Y0 F500G01 G41 D1 X-25 Y0 F500
X-25 Y25X-25 Y25
X25 Y25X25 Y25
X25 Y-25X25 Y-25
X-25 Y-25X-25 Y-25
X-25 Y5X-25 Y5
G0 G40 Z5G0 G40 Z5
#1 =#1+0.25#1 =#1+0.25
IF[#1 LT 10.01]GO TO 10IF[#1 LT 10.01]GO TO 10
G00 G40 Z50G00 G40 Z50
M30 ( Note:- # parameter is used for repetition ofM30 ( Note:- # parameter is used for repetition of
cycle)cycle)
60
50
0,0
60
10
30

9.  O0005O0005
 G90 G49 G17 G00 G21 G40 G15 G80 G53 Z0G90 G49 G17 G00 G21 G40 G15 G80 G53 Z0
 T1T1
 M03 S1000M03 S1000
 G00 G43 H1 Z50G00 G43 H1 Z50
 #1=0#1=0
 N10 G00 G54 X-15 Y30N10 G00 G54 X-15 Y30
 G00 Z-#1G00 Z-#1
 G01 G41 D1 X5 Y30 F500G01 G41 D1 X5 Y30 F500
 X5 Y55X5 Y55
 X55 Y55X55 Y55
 X55 Y5X55 Y5
 X5 Y5X5 Y5
 X5 Y35X5 Y35
 G00 G40 Z5G00 G40 Z5
 #1 =#1+0.25#1 =#1+0.25
 IF[#1 LT 10.01]GO TO 10IF[#1 LT 10.01]GO TO 10
 G00 G40 Z50G00 G40 Z50
 M30M30
( Note:- # parameter is used for repetition of cycle)( Note:- # parameter is used for repetition of cycle)
60
50
60
30
0,0
10

10. Contour programming withContour programming with
incrementalincremental way for cavityway for cavity
At the time of machining tool isAt the time of machining tool is
plunged at the center of job & depthplunged at the center of job & depth
is taken at that point as well as theis taken at that point as well as the
direction is changeddirection is changed
Exa. G41 becomes G42 & vice versaExa. G41 becomes G42 & vice versa
depending upon the direction ofdepending upon the direction of
movement of tool.movement of tool.

11. Circular coreCircular coreO0006O0006
G90 G49 G17 G21 G40 G15 G80 G53 Z0G90 G49 G17 G21 G40 G15 G80 G53 Z0
T1T1
M03 S1000M03 S1000
G00 G43 H1 Z50G00 G43 H1 Z50
#1=0#1=0
N10 G00 G54 X45 Y0N10 G00 G54 X45 Y0
G00 Z-#1G00 Z-#1
G01 G42 D1 X20 Y0 f500G01 G42 D1 X20 Y0 f500
G03 X20 Y0 I-20 J0G03 X20 Y0 I-20 J0
G00 G40 Z5G00 G40 Z5
#1=#1+0.25#1=#1+0.25
IF [#1 LT 10.01] GO TO 10IF [#1 LT 10.01] GO TO 10
G00 G40 Z50G00 G40 Z50
M30M30
60
0,0
60
30
0,0
10
R20

12. Circular cavityCircular cavityO0007O0007
G90 G49 G17 G21 G40 G15 G80 G53 Z0G90 G49 G17 G21 G40 G15 G80 G53 Z0
T1T1
M3 S1000M3 S1000
G00 G43 H1 Z50G00 G43 H1 Z50
#1=0#1=0
N10 G00 G54 X0 Y0N10 G00 G54 X0 Y0
G00 Z2G00 Z2
G01 Z-#1 F100G01 Z-#1 F100
G01 G41 D1 X20 Y0 f500G01 G41 D1 X20 Y0 f500
G03 X20 Y0 I-20 J0G03 X20 Y0 I-20 J0
G00 G40 Z5G00 G40 Z5
#1=#1+0.25#1=#1+0.25
IF[#1 LT 10.01]GO TO 10IF[#1 LT 10.01]GO TO 10
G00 G40 Z50G00 G40 Z50
M30M30
60
0,0
60
30
0,0
10
R20

13. Circular Taper coreCircular Taper core
O0008O0008
G90 G49 G17 G21 G40 G15 G80 G53 Z0G90 G49 G17 G21 G40 G15 G80 G53 Z0
T1T1
M03 S1000M03 S1000
G0 G43 H1 Z50G0 G43 H1 Z50
#1=0#1=0
#2=20#2=20
N10 G0 G54 X45 Y0N10 G0 G54 X45 Y0
G01 Z-#1 F100G01 Z-#1 F100
G01 G42 D1 X#2 Y0 f500G01 G42 D1 X#2 Y0 f500
G03 X#2 Y0 I-#2 J0G03 X#2 Y0 I-#2 J0
G00 G40 Z5G00 G40 Z5
#1=#1+0.25#1=#1+0.25
#2=#2+0.25#2=#2+0.25
IF [#1 LT 10.01] GO TO 10IF [#1 LT 10.01] GO TO 10
G00 G40 Z50G00 G40 Z50
M30M30
60
0,060
30
10
R20

14. 60
0,060
30
10
R25
Circular Taper cavityCircular Taper cavity
45
O0009O0009
G90 G49 G17 G21 G40 G15 G80 G53G90 G49 G17 G21 G40 G15 G80 G53
Z0Z0
T1T1
M3 S1000M3 S1000
G00 G43 H1 Z50G00 G43 H1 Z50
#1=0#1=0
#2=25#2=25
N10 G00 G54 X0 Y0N10 G00 G54 X0 Y0
G00 Z2G00 Z2
G01 Z-#1 F100G01 Z-#1 F100
G01 G41 D1 X#2 Y0 f500G01 G41 D1 X#2 Y0 f500
G03 X#2 Y0 I-#2 J0G03 X#2 Y0 I-#2 J0
G00 G40 Z5G00 G40 Z5
#1=#1+0.25#1=#1+0.25
#2=#2-0.25#2=#2-0.25
IF[#1 LT 10.01]GO TO 10IF[#1 LT 10.01]GO TO 10
G00 G40 Z50G00 G40 Z50

15. I :- Distance of job origin from tool start pointI :- Distance of job origin from tool start point
for the circular profile in X axis.for the circular profile in X axis.
J :- Distance of job origin from tool startJ :- Distance of job origin from tool start
point for the circular profile in Y axis.point for the circular profile in Y axis.

16. Taper cutTaper cut
O0010O0010
G90 G49 G17 G21 G40 G15 G80 G53 Z0G90 G49 G17 G21 G40 G15 G80 G53 Z0
T1T1
M3 S1000M3 S1000
G00 G43 H1 Z50G00 G43 H1 Z50
#1=0 (z)#1=0 (z)
#2=50 (x)#2=50 (x)
N10 G00 G54 X75 Y-10N10 G00 G54 X75 Y-10
G00 Z-#1G00 Z-#1
G01 G42 D1 X#2 Y-10 f500G01 G42 D1 X#2 Y-10 f500
G01 Y70G01 Y70
G00 G40 Z5G00 G40 Z5
#1= #1+0.25#1= #1+0.25
#2=#2+0.25#2=#2+0.25
IF [#1 LT 10.01] GO TO 10IF [#1 LT 10.01] GO TO 10
G00 G40 Z50G00 G40 Z50
M30M30
60
0,0
60
30
1045’

17. All Side Edge ChamferAll Side Edge Chamfer
O0011O0011
G90 G15 G40 G80 G49 G17 G21 G53 Z0G90 G15 G40 G80 G49 G17 G21 G53 Z0
T1T1
M03 S1000M03 S1000
G0 G43 H1 Z50G0 G43 H1 Z50
#1=0#1=0
#2=25#2=25
N10 G0 G54 X45 Y0N10 G0 G54 X45 Y0
G0 Z-#1G0 Z-#1
G01 G42 D1 X#2 Y0G01 G42 D1 X#2 Y0
X#2 Y#2X#2 Y#2
X-#2 Y#2X-#2 Y#2
X-#2 Y-#2X-#2 Y-#2
X#2 Y-#2X#2 Y-#2
X#2 Y5X#2 Y5
G0 G40 Z5G0 G40 Z5
#1=#1+0.25#1=#1+0.25
#2=#2+0.25#2=#2+0.25
IF [#1 LT 5.1] GO TO 10IF [#1 LT 5.1] GO TO 10
G0 G40 Z50G0 G40 Z50
M30M30
60
50
60
0,0
30
10

18. Side FilletSide Fillet
 O0011O0011
 G90 G15 G40 G80 G49 G17 G21 G53G90 G15 G40 G80 G49 G17 G21 G53
Z0Z0
 T1T1
 M03 S1000M03 S1000
 G0 G43 H1 Z50G0 G43 H1 Z50
 #1=0#1=0
 N10 G00 G54 X25 Y-10N10 G00 G54 X25 Y-10
 #2 = SIN [#1]#2 = SIN [#1]
 #3 = COS [#1]#3 = COS [#1]
 #4 = 10 * #2 ……………….[X]#4 = 10 * #2 ……………….[X]
 #5 = 10 * #3#5 = 10 * #3
 #6 = 10 - #5 ……………….[Z]#6 = 10 - #5 ……………….[Z]
 G0 Z-#6G0 Z-#6
 G01 G42 D1 X#4 Y-10G01 G42 D1 X#4 Y-10
 G01 X#4 Y70G01 X#4 Y70
 G0 G40 Z5G0 G40 Z5
 #1=#1+ 1#1=#1+ 1
 IF [#1 LT 90.01] GO TO 10IF [#1 LT 90.01] GO TO 10
 G0 G40 Z50G0 G40 Z50
 M30M30
60
60
30
R10
0,0

19. All Side FilletAll Side Fillet
 O0012O0012
 G90 G15 G40 G80 G49 G17 G21 G53G90 G15 G40 G80 G49 G17 G21 G53
Z0Z0
 T1T1
 M03 S1000M03 S1000
 G0 G43 H1 Z50G0 G43 H1 Z50
 #1=0#1=0
 N10 G00 G54 X45 Y0N10 G00 G54 X45 Y0
 #2 = SIN [#1]#2 = SIN [#1]
 #3 = COS [#1]#3 = COS [#1]
 #4 = 10 * #2 …………………[X]#4 = 10 * #2 …………………[X]
 #5 = 10 * #3#5 = 10 * #3
 #6 = 10 - #5 …………………[Z]#6 = 10 - #5 …………………[Z]
 G00 Z-#6G00 Z-#6
 G01 G42 D1 X#4 Y0 F300G01 G42 D1 X#4 Y0 F300
X#4 Y#4X#4 Y#4
X-#4 Y#4X-#4 Y#4
X-#4 Y-#4X-#4 Y-#4
X#4 Y-#4X#4 Y-#4
X#4 Y5X#4 Y5
60
60
30
R10
0,0

20. G00 G40 Z5G00 G40 Z5
#1=#1+ 1#1=#1+ 1
IF [#1 LT 90.01] GO TO 10IF [#1 LT 90.01] GO TO 10
G00 G40 Z50G00 G40 Z50
M30M30

21. Side FilletSide Fillet
 O0013O0013
 G90 G15 G40 G80 G49 G17 G21 G53G90 G15 G40 G80 G49 G17 G21 G53
Z0Z0
 T1T1
 M03 S1000M03 S1000
 G0 G43 H1 Z50G0 G43 H1 Z50
 #1=0#1=0
 N10 G00 G54 X25 Y-10N10 G00 G54 X25 Y-10
 #2 = SIN [#1]#2 = SIN [#1]
 #3 = COS [#1]#3 = COS [#1]
 #4 = 10 * #2 [Z]#4 = 10 * #2 [Z]
 #5 = 10 * #3#5 = 10 * #3
 #6 = 10 - #5 [X]#6 = 10 - #5 [X]
 G0 Z-#4G0 Z-#4
 G01 G42 D1 X#6 Y-10G01 G42 D1 X#6 Y-10
 G01 X#4 Y70G01 X#4 Y70
 G0 G40 Z5G0 G40 Z5
 #1=#1+ 1#1=#1+ 1
 IF [#1 LT 90.01] GO TO 10IF [#1 LT 90.01] GO TO 10
 G0 G40 Z50G0 G40 Z50
 M30M30
60
60
30
R10
0,0

22. EllipseEllipse
 O0015O0015
 G90 G15 G40 G80 G49 G17 G21 G53G90 G15 G40 G80 G49 G17 G21 G53
Z0Z0
 T1T1
 M03 S1000M03 S1000
 G0 G43 H1 Z50G0 G43 H1 Z50
 #1=0#1=0
 N10 G00 G54 X45 Y0N10 G00 G54 X45 Y0
 Z-#1Z-#1
 #2=0#2=0
 N20 #3 = SIN [#1]N20 #3 = SIN [#1]
 #4 = COS [#1]#4 = COS [#1]
 #5 = 25 * #4 [X]#5 = 25 * #4 [X]
 #6 = 10 * #2 [Y]#6 = 10 * #2 [Y]
 G01 G42 D1 X#5 Y#6 F500G01 G42 D1 X#5 Y#6 F500
 #2=#2+ 1#2=#2+ 1
 IF [#2 LT 360.01] GO TO 20IF [#2 LT 360.01] GO TO 20
 G0 G40 Z5G0 G40 Z5
 #1=#1+ 0.25#1=#1+ 0.25
 IF [#1 LT 5.01] GO TO 10IF [#1 LT 5.01] GO TO 10
 G0 G40 Z50G0 G40 Z50
60
60
R10
0,0
Maj. R 25 & Min. R 10
Depth 5mm

23. HEMI SPHEAREHEMI SPHEARE
G0 G90 G15 G40 G80 G49 G17 G21 G53 Z0G0 G90 G15 G40 G80 G49 G17 G21 G53 Z0
T1T1
M03 S1000M03 S1000
G0 G43 H1 Z50G0 G43 H1 Z50
#1=0 (ANGLE)#1=0 (ANGLE)
N10 G00 G54 X50 Y0N10 G00 G54 X50 Y0
#2=SIN [#1]#2=SIN [#1]
#3=COS [#1]#3=COS [#1]
#4=20*[#2] (X)#4=20*[#2] (X)
#5=20*[#3]#5=20*[#3]
#6=20-#5 (Z)#6=20-#5 (Z)
G0 Z-#6G0 Z-#6
G0 G42 D1 X#4 Y0G0 G42 D1 X#4 Y0
G03 X#4 Y0 I-#4 J0G03 X#4 Y0 I-#4 J0
G0 G40 Z5G0 G40 Z5
#1=#1+1#1=#1+1
IF [#1 LT 90.01] GO TO 10IF [#1 LT 90.01] GO TO 10
G0 G40 Z50G0 G40 Z50
M30M30
60
0,0
60
30
0,0
R20

24. Milling OperationMilling Operation
 Highly versatile machining operationHighly versatile machining operation
 Multitooth tool that produces a number of chips in oneMultitooth tool that produces a number of chips in one
revolutionrevolution
Fig:Some of the basic type milling cutters and milling operations.

25. Slab MillingSlab Milling
 Slab milling also called as peripheral millingSlab milling also called as peripheral milling
 Cutters have straight or helical teeth resulting inCutters have straight or helical teeth resulting in
orthogonal or oblique cutting actionorthogonal or oblique cutting action
Fig : (a) Conventional milling and climb milling (b) Slab milling operation, showing depth of
cut , d, feed per tooth, f, chip depth of cut, tc, and workpiece speed, v. (c) cutter travel
distance lc to reach full depth of cut.

26. G Code
 G15- Polar coordinate cancel
 G17- X Y plane selection
 G21- Input in mm
 G43- Tool length compensation in +ve direction
 G49- Tool length compensation cancel
 G53- Machine coordinate active
 G54- Work offset page
 G80- Canned cycle cancel
 G90- Absolute coordinate
 G40- Tool compensation Cancel

27. THANKING YOU