CNC TURNINGMTAB CONTROL PROGRAMMING MANUAL

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CNC TURNING PROGRAMMINGMANUAL

BYMTAB TECHNOLOGY CENTER PVT (LTD)

#133, Developed plots, Electrical & Electronics Industrial Estate, Chennai 96.Ph.: +91-44-43111114, Email id: enquiry@mtabtraining.com

Website: www.mtabtraining.com

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1. PART PROGRAMMING FUNDAMENTALS:

The following are the basic steps which involved in the CNC procedure.

o Process planning

o Part programming

o Part program entry

o Proving part programs

o Program preparation methods

1.1 Process Planning:

The part programmer will often carry out the task of process planning. Process planning is

the procedure of deciding what operation are to be done on the component, in what order

and with what tooling and work holding facilities. Both the process planning and part

programming aspects of manufacturer occur after the detail drawings of a component have

been prepared. The following procedure maybe used as a guide to assist the programmer by

describing each step required in preparing the method of production.

Receive the part drawing from the part drawing information and check the suitability

of part to be machined against the machine capacity.

Determine a method to driving the component (Chuck type, chuck size, type of jaw,

collect size, face driver etc.) and the method of machining.

Determine the tooling required to suit the method of machining and utilize as much

as possible which are permanently in the turret set upon the machine.

Determine the order of machining and tooling stations

Determine the planned stop (Cycle interrupt procedure, incorporating block delete

codes) for checking dimensional sizes where required by operator.

Determine the cutting speed based on i) component material, method of driving,

rigidity of the component. ii) The tooling selected for roughing and finishing tool

holders with carbide drills, HSS drills and ceramics.

Determine the depth of cut and feed rate for roughing operation based on the

horsepower available for cutting and rigidity of the part.

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Determine form surface finish requirements the cutter nose radius most suited for

finishing operations and determine feed rates.

Allocates tool offsets as required

Complete planning sheet

1.2 Part Programming:

After completing the planning sheet, draw the component showing the cutter paths.

Select a component datum and carryout the necessary calculations at slopes and

arcs.

Prepare tooling layout sheet showing tools to be used in the program and indicate

the station number for each tool.

Indicate the ordering code for each tool, grade and type of inserts to be used.

Write the part program according to the sequence of operations.

1.3 Part Program Entry:

The part program is prepared and then feed into the machine control unit (MCU) in order to

prepare a component of interest on machine tool. The input to the system can be done

through two ways.

o Manual Data Input

o Direct Numerical Input

1.3.1 Manual Data Input (MDI)

Complete part programs are entered into CNC control unit via the console keyboard. It is

suited only for relatively simple jobs the most common application for MDI is the editing of

part programs already resident in the controllers memory.

MDI concept is also called as “Conversational Programming” most of the CNC machines are

programmed via a question and answer technique whereby a resident of software program

asks the operator a series of questions. In response to the operators input, and by accessing

a pre-programmed data file in the computer control by

Select numerical values for use within machining calculations

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Perform calculations to optimize machining conditions

Identify standard tools and coordinates

Calculate cutter paths and coordinates

Generate the part program to machine the component

1.3.2 Direct Numerical Control (DNC)

The process of transferring part programs into the memory of a CNC machine tool from a

host computer is called direct numerical control.

1.4 Proving Part Programs

It is a safe practice to check the programmed path for any interference between the tool

and the work before using the part program for production this process is known as proving

part program. This process is done in several ways as follow:

i) Visual Inspection:

It represents the methods of checking visually the program present in the memory of the

CNC machine. In this actual program is run and the program movements in all axes to be

checked along with ensuring the tool offset of cutter compensation features. This method

represents the least form of verification and should not be relied entirely.

ii) Single Step Execution:

Before running the part program it should be executed in a single step mode i.e., block by

block. During execution the spindle speed, feed rate override facilities are used to monitor

the axes movement easily. This operation maybe carried out with or without mounting the

component in the machine.

iii) Dry Run:

A dry run consists of running the part program in auto mode. During this, the component is

not inserted in the machine table and the cutting is done in air. The purpose of dry run is to

verify the programmed path of the tool under continuous operation and to check whether

the adequate clearance exist between clamping arrangement and other projections with the

setup. Feed rate override facilities are used to slow down the speed of program execution.

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iv) Graphical Simulation:

A graphical simulation package emulates the machine tool and using computer graphics,

plots out the machine movement on a visual display unit (VDU) screen. Machine movement

often takes the form of a cutting tool shape moving around the screen according to the

programmed movements. When the tool shape passes over a shaded representation of the

component it erases that part of the finished component and any gross deviations from the

intended tool path can be observed any potential interference can be highlighted.

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2. PART PROGRAMMING GEOMETRY:

2.1 Coordinate System for a CNC Lathe:

Machining of a workpiece by a CNC program requires a coordinate system to be applied to

the machine tool. As all machine tools have more than one slide, it is important that each

slide is identified individually. There are three planes in which movement can take place.

Each place is assigned a letter and is referred as an axis,

o Longitudinal plane (AXIS X)

o Transverse plane (AXIS Z)

The two axis is identified by the upper case X and Z and the direction of movement along

each axis is specified in plus (+) or minus (-) and the Z axis is always parallel to the main

spindle of the machine, as shown in the below figure.

The coordinate system for designating the axes is the conventional ‘Right hand coordinate

system’ as shown in figure. A labeling of the axes is a right hand coordinate system

whenever the fingers of the right hand are aligned with the positive X axis and are then

rotated (through the smaller angle) toward the positive Y axis then the thumb of the right

hand points in the direction of the positive Z axis. Otherwise, the orientation is a ‘Left Hand

coordinate system’.

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The right hand coordinate system is also known as ‘Clockwise rotating coordinate system’.

The reason for this is the sequence of the axis definitions. If the X axis is rotating in the

direction of the Y axis, the movement is the name as if a screw is turned in the Z direction as

shown.

In programming it must be assumed that the workpiece is stationary and the tools move in

the coordinate system. The workpiece is positioned within the coordinate system so that

the Z axis coincides with the turning center line (axis of rotation) and the X and Y

coordinates always have the same values. Therefore Y is not used in turning.

2.2 Zero Point and Reference Point:

The CNC machines, tool traverse are controlled by the coordinating systems. Their accurate

position within the machine tool is established by ‘Zero Point’.

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2.3 Machine Zero Point (M):

Machine zero point (M) is specified by the manufacturer of the machine. This is the zero

point for the coordinate systems and reference points in the machine as shown in below.

The main spindle axis (Center line) represents the Z axis whereas the face determines the X

axis. The directions of the positive X and Z axes point toward the working area when the tool

transverses in the positive direction, it moves away from the workpiece.

2.4 Reference Point (R):

This point serves for calibrating and for controlling the measuring system of the slides and

tool traverses. The position of the reference point is accurately predetermined in every

traverse axis by the trip dogs and limit switches. Therefore, the reference point coordinates

always have the same, precisely known numerical value in relation to the machine zero

point. After initiating the control system, the reference point must always be approached

from all axes to calibrate the traverse measuring system. If current slide and tool position

data should be lost in control system as for example through an electrical failure the

machine must against be positioned to the reference point to re-establish the proper

position valves.

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2.5 Workpiece Zero Point (W):

This point determines the workpiece coordinate system in relation to the machine zero

point. The workpiece zero point is chosen by the programmer and input into the CNC

system when setting up the machine. The workpiece zero point can be freely chosen by the

programmer within the workpiece envelope of the machine. It is however advisable to place

the workpiece zero point in such a manner that the dimensions in the workpiece drawing

can be conveniently converted into coordinate values and orientation when clamping /

chucking, setting up and checking the traverse measuring system can be effected easily.

For turned parts, the workpiece zero point should be placed along the spindle axis (center

line), in line with the right-hand or left-hand end face of the finished contour. Occasionally,

the workpiece zero point is also called the ‘program zero point’.

2.6 Tool Reference Point (T):

When machining a workpiece it is essential to able to control the tool point or the tool

cutting edges in precise relationship to the workpiece along the machining path. Since tools

have different shapes and dimensions, precise tool dimensions have to be established

beforehand and input into the control system.

3P6P5

2

P4P3

1P2

P1(0, 0)

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The tool dimensions are related to a fixed tool setting point during pre-setting. The tool

setting point E is located at a certain point on the tool holder. This setting point permits

measuring of tools away from the CNC machine. The data thus measured such as tool

length, tool point offset or tool radius are input into the tool data storage (memory) of the

control system. The mate of the tool settings point is the socket point N on the tool carrier.

2.7 CNC Dimensioning:

Dimensioning information in a workpiece drawing is stated in two ways,

o Absolute Dimensioning System

o Incremental Dimensioning System

Absolute dimension system always refers to a fixed reference point in the drawings as

shown in below. This point has the function of a coordinate zero point. The dimension lines

run parallel to the coordinate axes and always start at the reference point. Absolute

dimensions are called as “Reference dimensioning system”

When using incremental dimension system every measurement refers to a previously

dimensioned position. Incremental dimensions are distance between adjacent points. These

distances are converted into incremental coordinates by accepting the last dimension point

as the coordinate origin for the new point. This may be compared to a small coordinate

system, i.e., shifted consequently from point to point (P1… P2… through P6) as shown.

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Incremental dimensions also called as “Relative Dimensioning System” or “Chain

Dimensioning System”.

ABSOLUTE DIMENSIONING

INCREMENIAL DIMENSIONING

POINTS X Z POINTS U W

P1 10 0 P1 10 0

P2 10 -10 P2 0 -10

P3 20 -10 P3 10 0

P4 20 -30 P4 0 -20

P5 30 -30 P5 10 0

P6 30 -60 P6 0 -30

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3. CNC PROGRAM BULID UP:

In a CNC program, the machining steps (operations) for producing a part on the machine

tool are laid down in a form that the control system can understand. A program is composed

of several blocks. A block is a collection of CNC word which address letter and a sequence of

number, refer the given below table.

Address Characters As Per DIN 66025Character Meaning

A Rotation about, X- axisB Rotation about, Y- axisC Rotation about, Z axis

D&E Rotation about additional axesF FeedG Preparatory function, identifying the action to be

executedH UnassignedI Interpolation Parameter / Thread pitch parallel to X-axisJ Interpolation Parameter / Thread pitch parallel to Y-axisK Interpolation Parameter / Thread pitch parallel to Z-axisM Machine function / Auxiliary functionN Block numberO Program Number

P,Q,R Parameters are used in cyclesS Spindle speedT Tool Function

U,V,W Second movement parallel to X, Y, Z axes respectivelyX Movement in X-axisY Movement in Y-axisZ Movement in Z -axis

:

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3.2 Miscellaneous Function (M Codes)

When a 3-digit figure the M-code address is specified, a 3-digit BCD code signal and a strobe

signal are transmitted. This signal is used for ON / OFF control of the machine function such

as tool change, spindle rotation, coolant ON and OFF etc. M code can be specified in one

block for the function of varies machine tool builder

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Miscellaneous Function (M Codes)M Codes Description

M00 Program StopM01 Optional StopM02 Program EndM03 Spindle Rotation ClockwiseM04 Spindle Rotation Counter ClockwiseM05 Spindle StopM06 Tool ChangeM08 Coolant OnM09 Coolant OffM10 Chuck OpenM11 Chuck CloseM30 Program Stop and RewindM62 Output 1 OnM63 Output 2 OnM64 Output 1 OffM65 Output 2 OffM66 Wait input 1 OnM67 Wait input 2 OnM76 Wait input 1 OffM77 Wait input 2 OffM98 Sub-program CallM99 Sub-program Exit

3.3 Preparatory Functions (G Codes):

A 2-digit number following the address G determines the meaning of command used in the

block. G codes are divided into two types,

i) One shot G code: The G code is effective only in the block in which it is specified.

ii) Modal G code: The G code is effective until another G code of the same group is

specified.

Notes:

G codes marked with * are initial G codes when turning program ON, for G20 and

G21, the G code before turning power off remains.

G codes of group 00 are not modal. They are only effective in the block in which they

are specified.

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G CODE Group FunctionG00* 01 Positioning (Rapid traverse)

G0l Linear interpolation (Cutting feed)G02 Circular interpolation (Clockwise)G03 Circular interpolation ( Counter Clockwise)G04 00 Dwell

G17* 02 XY plane selectionG18 ZX plane selectionG19 YZ plane selectionG20 06 Input in inch

G21 Input in mmG28 00 Return to reference point

G40* 07 Tool Nose Radius compensation cancelG41 Tool Nose Radius compensation leftG42 Tool Nose Radius compensation rightG70 04 Finishing CycleG71 Multiple Turning CycleG72

00

Multiple Facing CycleG73 Pattern Repeating CycleG74 Drilling CycleG75 Grooving Cycle

G76 Multiple Threading CycleG90 01 Turning CycleG92 Threading CycleG94 Facing Cycle

G96 02 Constant Surface Speed ControlG97* Constant Surface Speed Control CancelG98 11 Feed Per MinuteG99 Feed Per Revolution

If any G code of group 01 is specified in a canned cycle mode, the canned cycle is

automatically cancelled and the G80 condition is entered. However a G code of

group 01 is not affected by any of the canned cycle G codes.

All the G codes may not apply to each machine.

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3.4 Program Build Up For CNC Lathe:

CNC Program can be divided into three parts

o Start-up Program

o Profile Program

o End Program

i) Star-Up

Program O1000

G21 G99

G28 U0 W0

T0101

M03 S1500

G00 X32 Z5

ii) Profile Program is based on the given part drawing.

iii) End of the

program G28 U0 W0

M05

M30

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4. PROGRAMMING EXAMPLES:

4.1 Programming for turning operation using linear command:

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O1001;G21 G99; Initial settingsG28 U0 W0; Going to home position T0101; Tool change position No. 01M03 S1200; Spindle clockwise with 1200 RPMG00 X32 Z5; Move tool entry point of X32 Z5 at rapid traverse G01 X31 F0.08; 1st depth of cut of 1 mm at a feedrate of 80 mm/min G01 Z-25; Moving the tool towards Z-25 mmG01 X33; Retract the tool in X axisG00 Z5; Moving the tool to Z5 positionG01 X30 F0.08; 2nd depth of cut of 1 mm at a feedrate of 80 mm/min G01 Z-25; Moving the tool towards Z-25 mmG01 X33; Retract the tool in X axisG00 Z5; Moving the tool to Z5 positionG01 X29 F0.08; 3rd depth of cut of 1 mm at a feed rate of 80 mm/min G01 Z-25; Moving the tool towards Z-25 mmG01 X33; Retract the tool in X axisG00 Z5; Moving the tool to Z5 positionG01 X28 F0.08; 4th depth of cut of 1 mm at a feed rate of 80 mm/min G01 Z-25; Moving the tool towards Z-25 mmG01 X33; Retract the tool in X axisG00 Z5; Moving the tool to Z5 positionG28 U0 W0; Going to home positionM05; Stop the spindleM30; Program stops and rewind

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4.2 Programming for linear and circular interpolation:

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NOTE: This Program is for Simulation only (not for Machining Practice) O1003;G21 G99; Initial settingsG28 U0 W0; Going to home position T0101; Tool change position No. 01M03 S1200; Spindle clockwise with 1200 RPMG00 X32 Z5; Move tool entry point of X32 Z5 at rapid traverse G01 X18 F0.08; First point in X axis at a feed rate of 80 mm/min G01 Z0; Defining Z axisG01 X20 Z-4 F0.08; Moving the tool both X and Z axes G01 Z-16; Moving the tool to Z-16 mm positionG03 X24 Z-18 R4; Tool movement in circular interpolation with CCW G01 Z-30; Tool Movement along Z-30 mmG01 X32 Z-38; Tool movement both X and Z axes G28 U0 W0; Going to home positionM05; Stop the spindleM30; Program Stop & Rewind

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4.3 Programming for facing cycle (G94):

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Facing Cycle (G94): This cycle is used for stock removal in parallel tool path. It is equivalent of

Rapid to Z position Feed to X position Feed to start Z position Rapid to start X position

Format:

X – Diameter to which the movement is being made.Z – Z-axis coordinate to which the movement is being made. F – Feed Rate.O1004;G21 G99; Initial settingsG28 U0 W0; Going to home positionT0101; Tool change position No. 01M03 S1200; Spindle clockwise with 1200 RPMG00 X33 Z5; Move tool entry point of X33 Z5 at rapid traverse G94 X22 Z-0.5 F0.08; Calling G94 Cycle and defining first depth of cut Z-1; Defining Second Depth of cutZ-1.5; Z-2;Z-2.5; Z-3;Z-3.5; Z-4;Z-4.5; Z-5;Z-5.5; Z-6;Z-6.5; Z-7;Z-7.5; Z-8;G00 X33 Z-8;G94 X28 Z-8.5 F0.08; Z-9;Z-9.5; Z-10;Z-10.5; Z-11;Z-11.5; Z-12;Z-12.5; Z-13;Z-13.5; Z-14;G28 U0 W0; M05;M30;

G94 X Z F;

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4.4 Programming for Turning Cycle (G90):

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Turning Cycle (G90): This cycle is used for stock removal in parallel tool path. This cycle performs four distinct moves with one line of information. It is equivalent of

Rapid to X position. Feed to Z position. Feed to start X position. Rapid to start Z position.

Format:

X – Diameter to which the movement is being made.Z – Z-axis coordinate to which the movement is being made. F – Feed Rate.

O1006;G21 G99; Initial settingsG28 U0 W0; Going to home position T0101; Tool change position No. 01M03 S1200; Spindle clockwise with 1200 RPMG00 X33 Z5; Move tool entry point of X33 Z5 at rapid traverse G90 X31 Z-26 F0.01; Calling G90 Cycle and defining first depth of cut X30; Defining second depth of cutX29; X28;G90 X27 Z-14 F0.01; X26;X25; X24; X23; X22;G28 U0 W0; M05;M30;

G90 X Z F;

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4.5 Programming for multiple turning cycle (G71):

G71G71

U (Δd)R (e);P (A')Q (B) U (Δu) W(Δw)F;

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Multiple Turning Cycle (G71): Multiple turning cycles is used when the major direction of cut is along the ‘Z’ axis. This cycle requires two blocks are needed to specify all the parameters.

Format:

W – Depth of cut in X axis. R – Relief amount.P – Starting block of the profile. Q – Finishing block of the profile. U – Finishing allowance in X axis. W – Finishing allowance in Z axis. F – Feed Rate.

O1007;G21 G99; Initial settingsG28 U0 W0; Going to home position T0101; Tool change position No. 01M03 S1200; Spindle clockwise with 1200 RPMG00 X32 Z5; Move tool entry point X32 Z5 at rapid traverseG71 U0.5 R1; Calling G71 Cycle and defining Cycle Parameters G71 P1 Q2 U0.1 W0.1 F0.01; Defining Cycle ParametersN1 G01 X18; G01 Z0;G01 X20 Z-4; G01 Z-16;G03 X24 Z-18 R4; G01 Z-30;N2 G01 X32 Z-38; G28 U0 W0;M06 T2; M03 S1500; G00 X32 Z5;G70 P1 Q2 S1500 F0.08; G28 U0 W0;M05; M30;

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4.6 Programming for grooving Cycle (G75):

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G75G75

R (e);X Z PQ F;

Grooving Cycle (G75): This cycle is designated for grooving. This cycle also requires two blocks are needed to specify all the parameters.

Format:

R – Return amount, mm.X – Total depth along X axis, mm. Z – Total width along Z axis, mm.P – Depth of cut in X axis (in Micron, in mm).Q – Stepping distance in Z axis (in Micron, in mm). F – Feed Rate, rev/min.

O1009;G21 G99; Initial SettingsG28 U0 W0; Going to home position T0101; Tool Change Position No. 01M03 S500; Spindle clockwise with 500 RPMG00 X33 Z-18; Move tool entry point X33 Z-18 at rapid TraversG75 R1; Calling G75 Cycle and defining Cycle Parameters G75 X28 Z-20 P0.05 Q0.1 F0.04; Defining Cycle ParametersG28 U0 W0; M05;M30;

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4.7 Programming for multiple threading cycle (G76):

M30

G76G71

P (m) (r) (a)Q (Δd min)R (d);X Z P (k) Q (Δd) F;

Minor Diameter Calculationd= Minor Diameter D= Minor Diameter P= Thread Height d= D – 2 (P)d= 32 – 2 (0.613)d= 32 – 1.226d= 30.774Thread Height, P = 0.613 x Pitch of the Thread= 0.613 x 1P = 0.613

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Multiple Threading Cycles (G76): Thread cutting cycle can be commanded by the G76 command as shown in the figure. This cycle also requires two blocks are needed to specify all the parameters. Format:

m – No. of repeats for finishing operation. r – Chamfering amount.a – Tool angle, degree.Q – Minimum cutting depth, (in Micron, in mm). R – Finishing allowance, (in mm).X – Minor Diameter, m.Z – Thread length, mm.P (k) – Thread height, (in Micron, in mm).Q (Δd) – Depth of cut for first pass (in Micron, in mm). F – Pitch of the thread, mm.

O1010;G21 G99; Initial settingsG28 U0 W0; Going to home position T0101; Tool change position No. 01M03 S500; Spindle clockwise with 500 RPMG00 X32.5 Z5; Move to tool entry X32.5 Z5 at rapid traverse G76 P030060 Q0.05 R0.02; Calling G76 Cycle and defining cycle parameters G76 X30.774 Z-14 P0.613 Q0.1 F1;G28 U0 W0; M05;M30;

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4.8 Programming for drilling cycle (G74):

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Drilling Cycle (G74): This cycle is designed for deep hole drilling, the drill entering the workpiece by a predetermined amount then backing off by another set amount to provide breaking and allowing swarf to clear the drill flutes. This cycle is commanded by two distinct lines of parameters. Format:

G74 R (e);G74 X Z Q(Δk) F;

R (e) – Return amount, mm. X – Always zero, mm.Z – Drilling depth, mm.Q – Depth of cut in Z axis (in Micron). F – Feed Rate,mm.

O1011;G21 G99; - Initial settingsG28 U0 W0; - Going to home positionT0101; - Tool change position no. 01M03 S500; - Spindle clockwise with 500 rpmG00 X0 Z5; - Moving to tool entry point of X0 Z5 at rapid traverse G74 R1; - Calling G74 cycle and defining parametersG74 X0 Z-5 Q0.5 F0.1; G28 U0 W0;T0202; - Tool change position no. 02 M03 S500;G00 X0 Z5;G74 R1; - Calling G74 cycle and defining parameters G74 X0 Z-24 Q0.5 F0.08;G28 U0 W0;T0303; - Tool change position no. 03 M03 S500;G00 X0 Z5;G74 R1; - Calling G74 cycle and defining parameters G74 X0 Z-24 Q0.5 F0.06;G28 U0 W0; M05;M30;

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4.9 Programming for boring operation:

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O1012;G21 G99; - Initial settingsG28 U0 W0; - Going to home positionT0101; - Tool change position no. 01M03 S500; - Spindle clockwise with 500 rpmG00 X0 Z5; - Moving to tool entry point of X0 Z5 at rapid traverse G74 R1; - Calling G74 cycle and defining parametersG74 X0 Z-5 Q0.5 F0.1; G28 U0 W0;T0202; - Tool change position no. 02 M03 S1000;G00 X0 Z5;G74 R1; - Calling G74 cycle and defining parameters G74 X0 Z-24 Q0.5 F0.08;G28 U0 W0;T0303; - Tool change position no.03 M03 S1000;G00 X0 Z5;G74 R1; - Calling G74 cycle and defining parameters G74 X0 Z-24 Q0.5 F0.06;G28 U0 W0;T0404; - Tool change position no. 04 M03 S1000;G00 X12 Z5;G71 U0.5 R1; - Calling G71 cycle and defining parameters G71 P1 Q2 U-0.1 W0.1 F0.08; -“U” inner finishing allowanceN1 G01 X26; G01 Z0;G02 X22 Z-2 R4; G01 Z-14;G01 X16 Z-20; N2 G01 X12;G70 P1 Q2 S1200 F0.06; G28 U0 W0;M05; M30;

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4.10 Programming for internal threading operation:

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O1013;G21 G99; Initial SettingsG28 U0 W0; Going to home positionT0101; Tool change position no. 01M03 S1200; Spindle clockwise with S1200 rpmG00 X0 Z5; Moving to tool entry point of X0 Z5 at rapid traverse G74 R1; Calling G74 Cycle and defining parametersG74 Z-5 Q0.5 F0.1; G28 U0 W0;T0202; Tool change position no. 02 M03 S1200;G00 X0 Z5;G74 R1; Calling G74 cycle and defining parameters G74 Z-30 Q0.5 F0.08;G28 U0 W0;T0303; Tool change position no. 03 M03 S1200;G00 X0 Z5;G74 R1; Calling G74 cycle and defining parameters G74 Z-30 Q0.5 F0.06;G28 U0 W0;T0404; Tool change position no. 04 M03 S1200;G00 X12 Z5;G90 X13 Z-24 F0.08; Calling G90 cycle and defining parameters X14;X15; X16;X17 Z-18; X18; X19; X20; X21; X22; X23; X24; X24.162;G28 U0 W0; T0505;M03 S500;G76 P030060 Q0.05 R0.03;G76 X26 Z-14 P0.919 Q0.1 F1.5; G28 U0 W0;M05; M30;

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