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What is a machine?
A machine is a mechanical member consisting of different mechanisms
linked together .it reduces human effort in performing required tasks.
It requires sufficient amount of power supply and time to time
maintenance for its proper functioning. In general there are two major
types of machines.
Conventional machines
CNC(Computer numerical control ) machines
CONVENTIONAL MACHINES:
These machines are domestic machines which involve human
involvement in performing the operations. These machines provide few
options of machining since the operator has to inspect the work after
every operation .In these machines scope of complex machining is less
and possibility of human errors and difficulty in design modification is
more. Additional devices like jigs and fixtures, clamp and bots, vices,
indexing plates are required for performing further complex operations..
The production rates of these machines are low as they require more
machining time.
Examples are Central lathe, drilling machine, milling machine etc
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CNC MACHINES:
Cnc is a numerical control system that utilizes a dedicated , stored
program computer to perform some or all numerical control functions.
The controller is an interface between the machine components ant the
operator . All the input is fed into the controller and the output is done
by the machine. The general block diagram of a cnc shows its
configuration system where in the machine control unit analysis the
input and passes on to the machine where it is processed and feedback
information is returned back to the MCU.
These machines have improved automation thus eliminating
intervention of the operator . Many cnc machines run unattended
during their entire machining cycle freeing the operator to do other
tasks.
Todays CNC machines have unbelievable accuracy and
repeatability specifications this means that once a program is
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verified more number of work pieces can be machined with
precision and consistency.
In these machines once fed programs can be recalled and it also
has stimulation options for checking the tool path before working.
Since these machines are very easy to setup and run and program
loading is easy, they provide less setup time. This is imperative
with todays just in time production requirements.
The major makers of these machines are Waldrich and Coberg,
GE, Mitusubishi, Hardinge, Yong ju precision technology co
limited, Hindustan machine tools limited Etc. All major countries
like Germany, Japan, India, china, USA, Switzerland etc come
under the makers list.
The machine control units which are widely available are
a. Sinumerick / Hinumerick
b. Fanuc
c. GE
d. Mark++
e. Fagor
f. GE-Fanuc
g. Heidenhann
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All these systems posses their own advantages and disadvantages but the
majorly used ones are Fanuc and Sinumerick.
Cnc Machines have revolutionized todays industrial world, where
production requirements are high and time is less. They have cut down
machining time and increased the production rate thus meeting all the
requirements of the industries and acting as profit generators.
MACHINING CENTRE:
Machining centres are very important types of cnc machine tools and are
multifunctional machines equipped with automatic tool changers and are
capable of carrying out milling, drilling, reaming, tapping, boring etc.
tool changing is accomplished with the help of automatic tool changer
and is accomplished is 4-6 seconds .
A machining centre is characterized by an indexable tool magazine
which can store several tools. The tool magazine may carry 16 to 100
tools depending upon its capacity, an automatic tool changer(ATC) is
provided to pick the programmed tool from the tool magazine and mount
it on the spindle . The removed tool is put back into the magazine and
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ATC picks up the next tool. The ATC is thus ready with the tool for the
next operation and awaits the current operation to be over to replace the
tool.
Machining centre s are often provided with two or more work tables
called pallets .In a 2 pallet machine while the job is on one pallet is
being machined, the operator can set up the work on the next pallet. The
automatic pallet changer also moves the pallet with the finished job from
the working zone and moves the other pallet with the new work piece to
the working zone.
There are two types of machining centres :
I. Vertical Machining Centre
II. Horizontal machining Centre
Vertical Machining Centre (VMC):-
These are bed type machine with single spindle and auto tool
changer and multiple spindle with turret head(turret machining
centres)
It has X axis control for table movement left or right. Y axis
movement for the vertical movement of the spindle and Z axis
control for the horizontal movement of the spindle
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Horizontal Machining Centre:
These are single spindle machines with automatic tool changers,
some exceptions consist of machine with turret type tool magazine,
combination horizontal/vertical.
It has X axis control for the table movement left or right, Y axis
control for the vertical movement of the spindle and Z axis control
for the horizontal movement of the spindle.
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given and calculated data in a standard format, which could be converted
to an acceptable form for a particular machine control unit.
A part program generally comprises of G codes and M codes , where
G-codes = preparatory functions
M-codes= Miscellaneous function
N-code=Sequence number
S-code=Spindle speed
F-code=Feed rate
T-code=Tool numbe
G Codes & M codes:
G-codes:
G00 Positioning
G01 Linear interpolation
G02 Circular interpolation CW
G03 Circular interpolation CCW
G04 Dwell
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G05 High-speed continuous cutting
G07 SINE interpolation
G09 Exact stop check
G10 Offset value setting / work zero offset setting
G17 XY plane selection
G18 ZX plane selection
G19 YZ plane selection
G20 Inch data input
G21 Metric data input
G22 Stored stroke limit on
G23 Stored stroke limit off
G27 Zero return check
G28 Automatic Zero Return
G29 Return from reference point
G30 Return to 2nd/3rd/4th reference point
G31 Skip cutting
G33 Thread cutting
G40 Cutter compensation cancel
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G41 Cutter compensation left side
G42 Cutter compensation right side
G43 Tool length offset (+)
G44 Tool length offset (-)
G45 Tool offset increase
G46 Tool offset decrease
G47 Tool offset double increase
G48 Tool offset double decrease
G49 Tool length offset cancel
G54 Work coordinate system 1
G55 Work coordinate system 2
G56 Work coordinate system 3
G57 Work coordinate system 4
G58 Work coordinate system 5
G59 Work coordinate system 6
G60 Single direction positioning
G61 Exact stop check mode
G62 Automatic corner override effective
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G64 Cutting mode
G65 Custom macro simple call
G66 Custom macro modal call
G67 Custom macro modal call cancel
G73 Peck drilling cycle
G74 Counter tapping cycle
G76 Fine boring cycle
G80 Canned cycle cancel
G81 Drilling cycle
G82 Drilling cycle/counter boring
G83 Peck drilling cycle
G84 Tapping cycle
G85 Boring cycle
G86 Boring cycle
G87 Back boring cycle
G88 Boring cycle
G89 Boring cycle
G90 Absolute programming
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G91 Incremental programming
G92 Programming of absolute zero point
G94 Feed per minute
G95 Feed per revolution
G98 Return to initial point level in canned cycle
G99 Return to R point level in canned cycle
M-codes:
M00 Program Stop
M01 Optional (Planned) Stop
M02 End of Program
M03 Spindle CW
M04 Spindle CCW
M05 Spindle OFF
M06 Tool Change
M07 Coolant No. 2 ON
M08 Coolant No. 1 ON
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M09 Coolant OFF
M10 Clamp
M11 Unclamp
M12 Unassigned
M13 Spindle CW & Coolant ON
M14 Spindle CCW & Coolant ON
M15 Motion +
M16 Motion -
M17 Unassigned
M18 Unassigned
M19 Oriented Spindle Stop
M20-29 Permanently Unassigned
M30 End of Tape
M31 Interlock Bypass
M32-35 Unassigned
M36-39 Permanently Unassigned
M40-45 Gear Changes if Used, Otherwise Unassigned
M46-47 Unassigned
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M48 Cancel M49
M49 Bypass Override
M50-89 Unassigned
M90-99 Reserved for User
All the G codes and M codes mentioned are with reference to the Fanuc
machine control unit. These codes will be stored in the form of
parameters in the control system each code is assigned a unique
parameter.
SAMPLE PROGRAM:
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A(50,50) B(150,50) C(150,150) D(50,150) O(0,0)
T1;
M6;
G0 G28 G91 X0Y0Z0;
B0;
M03 S450;
G0 G90 G54 X0 Y0;
G0 Z50.0 G43 H1;
M03 S400 M07;
G0 Z5;
G01 Z-5 F30;
X50 Y50 G42 D01;
X150;
Y150;
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X50;
Y50;
G0 Z50;
G0 X-20 Y-20 G40;
X0 Y0;
M09 M05;
G0 G28 G91 X0 Y0 Z0;
M30;
VALVE BLOCK:
It is a major component of the surface grinding machine which is
present inside the Saddle and gives sideway motion to the table.
It also fits in cross screw through it for cross feed.
It is a assembly part consisting of three sub parts
1. Main Valve Block
2. Connecting Valve Block
3. Feed Valve Block
All three parts are assembled with the help of four long M8
studs and gaskets are provided between each interface to avoid
overflow.
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Oil which is known to be the best machine lubricant flows
through the internal holes path created inside the block. It flows
from the main valve block through the connecting valve block
and from connecting to the feed valve block. Thus generating ahydraulic setup.
This circulation of oil throughout the block gives longitudinal
motion to the table that lies on the saddle. The position of the oil
determines the direction of the table, it means if the oil flows
towards left then the table translates towards right and vice-
versa.
MAIN VALVE BLOCK:
It is the main head for the oil supply i.e the oil enters through this block.
It has two piston plugs present which help in pumping the lubricant
throughout the block. The oil passes through the internal grooves and
holes making its way to the other blocks. The stop return valve and
reverse return valve are present on the top phase of the block .The stop
return valve is used for emergency stop of the moving bed and reverse
return valve helps in pumping the oil it is because of the reciprocating
motion it provides to the piston.
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CONNECTING VALVE BLOCK:
It acts as a bridge between the feed and the main valve blocks .There are
grooves and thru holes present in this block which traces the oil flow
path. A large thru hole with a greater diameter is present on the front
phase of the block. The hole is used to fit in the cross feed screw.
There are two types of connecting blocks
1HP =It is said to be smaller in size with a capacity of 120 gauge
pressure.
2HP=It is a large block with a greater amount of gauge pressure
ranging up to 450.
FEED VALVE BLOCK:
It provides the outlet of the oil flow. This block has two feed ram which
are placed over a feed crank shank. A feed crank disc is provided at the
end of the shank facing outward, it is used to control the feed of the bed.A feed choke is provided on the top phase of the block which is used to
arrest the feed whenever required. This block enhances the flow of the
oil and provides an out let to oil sump.
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The feed crank disc is connected to the cross feed wheel by a link thus
providing mechanism for automatic feed in both ways .It runs totally
on hydraulic mechanism.
MACHINING OF FVB(Feed Valve Block) :
In order to manufacture any components the foremost thing which
comes to play is Process planning. It is said to be given the foremost
criteria before machining or manufacturing a components under any
environment.
A process plan gives us the total required information and topography of
the work It eases the occurrence of any flaws while manufacturing and
reduces possibilities of misjudgement.
PROCESS PLANNING:
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It starts with an engineering drawing of the component required for
production, before the part is machined several steps are involved they
are as follows:
Study of initial information(drawing and methods)
Material stock(blank) evaluation
Machine tool specifications
Control system features
Sequence of machining operations
Setup of the part
Technological data(speeds, feed rates etc)
Determination of the tool path
Program writing and preparation for transfer to Cnc
Program testing and debugging
The machine under which this block is machined is a hmc capex
machine. The material used is CAST IRON.
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HMC CAPEX MACHINE:
It is a 4axis Cnc machine with a X and Y being the translational
axis, Z being the spindle axis and B being the rotary head. the
maximum limits of the axis are- X=(-250to 250),Y=(-480 to
0)=B=360 deg, Z=0 to -480
This machine has a horizontal machining centre with an automatic
tool changer. The tool magazine has a capacity of accommodating
40 tools
It is controlled by Fanuc controller which also provides an option
to check the stimulation. The control pad also provides a facility tomanually adjust the movement of the bed and spindle axis.
A hydraulic power pack and a coolant supply is embedded with the
machine units for supply of oil and coolant(cutting oil)
The power supply to the machine is controlled by a servo stabilizer
and a transformer.
It performs all machining operations like drilling, boring, reaming
etc
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The cost per cycle time of the machine ranges from 500 to 600 rs
per hour.
WORK HOLDING DEVICES:
These are devices which are used to hold the work pieces intact to
the bed .these devices may be jigs and fixtures
Jigs may be defined as a device which holds and locates a work
piece and guide and controls one or more cutting tools.
Fixtures may be defined as a device which holds and locates a
work piece during inspection or for manufacturing operation.
Two blanks are placed in the rotary bed with the help of clamps
and bolts as shown in fig :
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DRILLING OPERATION:
Drilling is the operation of producing of a cylindrical hole by removing
metal by the rotating edge of a cutting tool called drill. Before
performing the drilling operation center of the hole is to be located by
using a centre drill.
Drill is a fluted cutting tool used to originate or enlarge a hole in a solid
material. There are different types of drills existing for different
operations. Commonly used ones are:
1) Centre drill
2) Two-lip twist drill
3) Taper shank core drill
CENTRE DRILL: The centre drills are straight shank, two fluted twist
drills used when centre holes are drilled on the ends of the shaft. They
are made in finer sizes.
TWIST DRILLS: It is manufactured by twisting a flat piece of tool steel
longitudinally for several revolutions, then grinding the diameter and the
point.
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TAPER SHANK CORE DRILLS: These drills are intended for enlarging
cored punched or drilled holes. These drills do not originate a hole and
are used where better finished holes are required.
DRILL MATERIAL:
One piece construction: High speed steel or carbon steel
Two piece construction:
Cutting portion: HSS
Shank portion: carbon steel with minimum tensile strength
REAMING OPERATION:
Reaming is an accurate way of sizing and finishing a hole which has
been previously drilled. The tool used for reaming is known as a reamer
which has multiple cutting edges, reamer cannot originate a hole. It
simply follows the path which has been previously drilled and removes a
very small amount of metal.
Commonly used reamers are:
1) Chucking reamer with parallel or taper shank
2) Machine bridge reamer
3) Machine jig reamer
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4) According to direction of rotation
a)Left hand cutting reamer
b) Right hand cutting reamer
Chucking reamer is also known as Machine reamer. The reamer
has short virtually parallel cutting edges ,with bevel head and
Long body recess between shank and cutting edges. It is driven at
slow speed and the entire cutting is done long flutes.
This has parallel cutting edges, with a long lead integral with a
taper shank for holding and driving the reamer. The flutes may be
straight or helical. The diameter varies from 6.4 to 37.
A machine jig reamer has short virtually parallel cutting edges with
a bevel head and a guide between the shank and cutting edges.
The flutes are helical.
A reamer which cuts while rotating in a clock wise direction when
viewed on the entering end of the reamer.
A reamer which cuts while rotating in an anti clockwise direction
when viewed on entering end of the reamer.
BORING OPERATION:
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Boring operation is used to enlarge a hole by means of adjustable
cutting tool with only one cutting edge. This is done where
suitable drill size is not available.
To finish a hole accurately and bring it to required size
To correct out of roundness of the hole.
COUNTERBORING:
Counterboring+ is the operation of enlarging the end of a hole
cylindrically.
This is necessary in some cases to accommodate the heads of the
bolts, studs and pins.
The tool used for counter boring is called counter bore. Counter bores
are made with straight or tapered shank to fit in the drill spindle. The
cutting edges may have straight or spiral teeth
FACES AND COORDINATES REQUIRED FOR MACHINING:
G54
Hole no. X y drill depth
1 79.735
40.4813
23.8125
47.65
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2 95.775
58.9 c.d 2
3 62.44 58.9 c.d 2
G55
Holeno.
x y drill depth
4 -8.731 8.733 8.73 57.155 -68.26 8.33 5.95 9.5256 -96.04 8.731 8.73 57.157 -11.11 20.638 5.954 57.15
8 -34.9 22.225 20.638 69.859 -34.92 58.738 20.638 69.85
10 -61.11 22.225 8.73 38.1011 -77.78 20.638 8.73 57.1512 -93.6 33.338 8.73 57.15
14 -61.11 58.738 8.73 17.462515 -79.37 60.325 14.288 Thru
16 -16.66 80.17 8.73 57.1517 -46.038 80.17 5.95 9.52518 -61.119 76.2 8.73 57.1519 -79.375 77.788 8.73 57.1520 96.04 80.169 8.73 57.15
G56
Hole no. x y drill
depth
21 -52.38
36.57 7.93
44.45
22 -93.34 33.33 8.7 31.75
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5 046 -76.2 61.118 8.73 57.1
545 -77.79 79.375 8.73 57.1
5
29 -23.82 77.7825
8.73 57.15
33 -80.168 96.0438
8.73 57.15
26 -8.7313 96.0438
8.73 57.15
47 -27.79 57.15 6.74 15.87
48 -53.79
57.15 6.74 15.87
G59
Holeno.
x y drill depth
36 -93.662 77.79 8.84 36.512
539 -52.39 73.819
c.d 2
37 -52.39 61.119
12.303
64.294
38 -34.131 61.119
8.84 61.913
40 -52.39 48.41
9
c.d 2
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LIST OF TOOLS USED IN THE PROGRAM:
Tool no. Tool drillT1 Centre drillT7 12DT10 19DT9 24UDT11 25 S/F BORET16 COMBINED REAMER
T6 14DT20 20 DRILLT28 26 BORET25 28 s/f boreT26 28.575 inboreT27 21.5 s/f T4 22.225 fine boreT31 11/32d
T32 15/64dT39 9/16dT40 7.93dT14 5.5dT3 6.75dT18 15d
OFFSET VALUES:
G54
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X -143.0000
Y -327.4100
Z -572.8600
G55
X 51.8600
Y -327.4100
Z -483.3600
G56
X 141.6800
Y -327.4100
Z -572.7600
G57
X 36.9000
Y -327.4100
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Z -581.8600
G58
X 44.5820
Y -327.4100
Z -482.9600
G59
X -38.2680
Y -327.4100
Z -580.3600
G-CODES &M-CODES USED:
G-CODES M-CODES
G00-POSITIONING M6-TOOL CHANGE
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G90-ABSOLUTE COMMAND M3-SPINDLE CLOCKWISE
ROTATION
M4-SPINDLE COUNTER
CLOCKWISE ROTATION.
G98-RETURNED TO INITIAL
POSITION IN CANNED CYCLE
M5-SPINDLE STOP
G81-DRILLING CYCLE M100
G16-POLAR CORDINATES ON. M30-PROGRAM END.
G54,55,56,57,58,59-OFFSETS
G15- POLAR CORDINATES
OFF.
G43-TOOL LENGTH
COMPENSATION
G83-PECK DRILLING CYCLE
G98-RETURN TO REFERENCE
G91-INCREMENTAL
PROGRAMMING
PROGRAM FOR FEED VALVE BL0CK:
M100;
B270;
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T1;
N100 M6;
GO G90 G54 X79.375 Y40.471;
GO Z100 G43 H1;
(C DRILL);
M3 S1000;
T 7;
G98 G81 R5.0 Z-6.5 F50;
M5;
M100
N20 M6;
G0 G90 G54 X79.375 Y40.481;
G0 Z1000G43 H7;
(12D);
M3 S450;
T10;
G 98 G83 R5.0 Z -113.0 Q 10.0 F40;
M5;
M100;
N 30 M6;
GO G90 G54 X 79.375 Y50.481;
G0 Z100.0 G43 H10;
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/*G 55*
B180;
G0 G90 G55 X -96.044 Y 8.736;
G0 Z100 G43 H1;
M3 S1000;
T6;
G98 G81 R 5 Z-6.5 F50;
X-68.263 Y8.733;
X-8.731 Y8.733;
X-77.78 Y20.838;
X-11.113 Y22.225;
X-34.925 Y22.225;
X-93.863 Y60.325;
X-61.119 Y58.738;
X-34.925 Y58.130;
X-61.119 Y76.112;
X-46.032 Y 80.17;
X-16.669
X-96.044
M5;
M100;
N80 M6;
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G0 G90 G55 X-34.925 Y 22.225;G0 Z100 G43 H6;
(14D);
M3 S450;
T20;
G90 G83 R50 Z-112 Q10.0 F40;
X-39.924 Y58.738;
M5;
M100;
N90 M6;
G0 G90 G43 H20;
M3 S300;
(20 D);
G98 G81 R 5.0 Z-108.0 F40;
X-34.925 Y58.738 Z-112;
M5;
M100;
N100 M6;
G0 G90 G55 X-34.925 Y22.225;
G0 Z100 G43 H28;
(27.5 BORE)
M3 S400;
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T25;
G0 G98 G81 R5.0 Z-69.85 F12;
X-34.925 Y58.728;
M5;
M100;
N110 M6;
G0 G90 G55 Z-34.925 Y23.111;
G0 Z100 G43 H25;
M3 S500;
(28.575 FIN BORE)
G98 G81 R5.0 Z-69.85 F12;
X-34.925 Y-58.738;
M5;
M100;
N130 M6;
G0 G90 G55 X-34.925 Y22.275;
G0 Z100.0 G43 H23;
M3 S300;
T27;
(21.5 S/F);
G98 G81 R-64.0 Z-112.0 F25;X-34.925 Y58.738;
M5;
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M100;
N140 M6;
GO G90 G55 X-34.925 Y22.221;
G0 Z100.0 G43 H27;
(22.225 FSNB)
T4;
G98 G81 R-6.5 Z-105,0 ;
X-34.925 Y58.738 Z-107.0;
M5;
M100;
N150 M6;
G0 G90 G55 X-96.043 Y8.371;
G0 Z100.0 G43 H4;
(11/32D);
M3 S500;
T31;
G98 G83 R5 Z57.15 Q10.0 F40;
X-8.7313 Y8.733;
X-77.788 Y20.638;
X-93.633 Y33.338;
X-16.669 Y80.10;
X-61.119 Y76.2;
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X-79.375 Y77.778;
X-96.04 Y 80.169;
X-61.119 Y 22.225 Z-38.1;
X-61.119 Y58.738 Z-17.462;
M5;
M100;
N160 M6;
G0 G90 G55 X-68.263 Y8.733;
G0 Z100.0 G43 H31;
M3 S650;
T6;
(15/64D);
G0 G98 G81 R5 Z-9.53 F30;
X-46.038 Y80.17;
G98 G83 X-11.113 Y20.638 R5.0 Z-57.15 Q10.0 F30;
M5;
M100;
N170 M6;
G0 G90 G55 X-79.38 Y 60.325;
G0 Z100.0 G43 H6;
(9/16 =14.288D);
M3 S480;
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T1;
G98 G83 R5 Z-112.0 Q10.0 F40;
M5;
M100;
N180 M6;
/*G 56*
B90;
G0 G90 G56 X-93.345 Y33.338;
G0 Z100 G43 H1;
M3 S1000;
T4;
G98 G81 R5.0 Z-6.5 F40;
X-52.388 Y36.573;
X-38.1 Y60.325;
X-52.385Y 60.325;
X-66.16 Y60.325;
M5;
M100;
N190 M6;
G0 G90 G56 X-93.345 Y 33.338;
G0 Z100 G43 H4;
(11/32=8.73);
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M3 S480;
T39;
G98 G83 R5.0 Z-31.75 Q10.0 F40;
M5;
M100;
N200 M6;
G0 G98 G56 X-52.388 Y36.573;
G0 Z100 G43 H39;
(7.93D);
M3 S480;
T40;
G98 G83 R5 Z-44.45 Q10 F40;
X-38.1 Y60.325 Z-47.625;
Z-52.388 Y60.325;
M5;
M100;
N210 M6;
G0 G90 G56 X-66.16 Y60.325;
G0 Z100.0 G43 H40;
(8.5D);
M3 S500;
T1;
-
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G98 G83 R5.0 Z-47.625Q10.0 F40;
M5;
M100;
N220 M6;
/*G57*
B270;
G0 G90 G57 X12.7 Y61.118;
G0 Z100 G43 H1;
M3 S1000;
T39;
G98 G81 R5.0 Z-6.5 F50 ;
X23.815 Y79.375;
X66.55 Y61.118;
X80.96 Y79.375;
M5;
M100;
N230 M6;
G0 G90 G57 X12.7 Y61.118;
G0 Z100 G43 H39;
(2.93= 5/16D);
M3 S500;
T1;
-
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G98 G81 R5 Z-34.925 F40;
X23.815 Y79.375 Z-26.908;
X80.96 Y79.375;
X66.675 Y61.118 Z-31.75;
M5;
M100;
N240 M6;
/*G 58*
B0;
G0 G90 G58 Z-8.731 Y8.731;
G0 Z100.0 G43 H1
M3 S1000;
T4;
G98 G81 R5 Z-6.5 F40;
X-20.638 Y77.786;
X-20.638 Y11.113;
X-80.169 Y16.669;
X-80.169 Y40.038;
X-8.731 Y 52.388;
X-76.2 Y61.119;
X-77.788 Y79.375;
X-80.169 Y96.643;
-
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X-8.731 Y96.043;
X-27.7813 Y57.15;
X-53.1813 Y57.15;
M5;
M100;
N250 M6;
G0 G90 G58 X-8.731 Y8.731;
G0 Z100.0 G43 H4;
(11/32=8.73);
M3 S500;
T14;
G98 G83 R5.0 Z-57.15 Q10.0 F40;
X-20.638 Y 77.778;
X-80.169 Y16.669;
X-76.2 Y61.119;
X-77.998 Y79.375;
X-80.169 Y96.043;
X-8.731 Y96.043;
M5;
M100;
N260 M6;
G0 G90 G58 X-8.731 Y52.388;
-
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G0 Z100.0 G43 H14;
(5.5D);
M3 S600;
T3;
G98 G81 R5.0 Z-12 .7 F30;
X-80.169 Y46,038 ;
M5;
M100;
N270 M6;
G0 G90 G58 Z-20.638 Y11.123;
G0 Z100.0 G43 H3;
M3 S500;
(6.75D);
T40;
G90 G81 R5.0 Z-57.15 F50;
X-27.781 Y57.15 Z-15.875;
X-53.181 Y59.15;
M5;
M100;
N280 M6;
G0 G90 G58 X-20.638 Y77.788;
G0 Z100.0 G43 H40;
-
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(8.5D)
M3 S500;
T1;
G98 G81 Z-47.625 F40;
M5;
M100;
N290 M6;
*G59*
B90;
G0 G90 G59 X-52.388 Y48.419;
G0 Z100.0 G43 H1;
M3 S1000;
T4;
G90 G81 R5.0 Z-2.9 F50;
X-52.388 Y61.119 Z6.5;
X-34.131 Y61.119;
X-93.662 Y77.788;
X-52.388 Y73.818 Z-2.0;
M5;
M100;
N300 M6;
G0 G90 G59 X-34.131 Y67.179;
-
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G0 Z100.0 G43 H4;
M3 S480;
T7;
G98 G83 R5,0 Z-61.913 A10.0 F40;
X-93,662 Y77,780 Z-36,513;
M5;
M100;
N310 M6;
G0 Z100.0 G43 H7;
M3 S480;
G98 G83 R5.0 Z-64.294 Q10.0 F40;
M5;
M100;
M6;
M30;
%