Chandru File

8/3/2019 Chandru File

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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






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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36/48

/*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;


46/48

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;


47/48

(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;


48/48

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;

%

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