lathe programming guide i. steps to make sure your lathe

Lathe Programming Guide

I. Getting Started.

Steps to make sure your lathe is configured properly.

II. Two Axis Lathe Samples

Machines Covered

TM6, TM8, TM10, TM12, TM18

TMX8, TMX10

III. Live Tool Lathe Samples

Machines Covered

TMM8, TMM10

IV. Live Tool Y Axis Lathe Samples

Machines Covered

TMX8MY, TMX8MYS, TMX10MY, TMX10MYS

All live tool lathes that are an “i” series machine will use the same examples.

All examples are done programming in software version 09.02.68

Please read this document until a stop for your machine type is reached.

This document was designed to be used as a work book, do not jump ahead!

This document was developed by Hurco Applications in Indianapolis Indiana by Hurco USA.

THIS DOCUMENT IS STILL IN THE TESTING, THIS DOCUMENT MAY NOT BE EXACT OR COMPLETE AT THIS

TIME, PLEASE CALL HURCO APPLICATIONS FOR ADDITIONAL SUPPORT.

I. Getting Started

Make sure the software version on the machine is on this software or a

more current version than 09.02.68. Check the first two digits to make sure it is larger than 09

Check the second set of digits to make sure it is larger than 02

Check the last set of digits to make sure it is larger than 68

The next step is to make sure the NC setting have been

properly set.

Press the AUX/Menu button on the control.

This button is located next to the Input button on the control. It will be one of the large

oval shaped buttons.

Press the utilities key on the touch screen.

Press the user preferences soft key

Press the NC Setting key

This control should display this screen.

Set all the settings as displayed above. The only setting

that may change is the ISNC G Code Mode. (see next page)

There are Two settings for G code interpertation.

The easiest way to think about these two modes is to imagine they are dialects, some of the

codes will mean different things, however all the functionallity exist in both modes, you may just need

to use a different code.

STOP!

Some codes are only available in certain modes. The mode of ISNC G-code will determine how

to program the machine.

Mode A is an older style of code and may not have all the functionality that Mode B will

contain. Mode A’s purpose is to add flexability. Mode A may allow programs from an older

control that is not a Hurco control to run on a hurco control will little to no modification.

Mode B is the Prefered way to program a Hurco Turning

Center!

ALL EXAMPLES WILL BE IN MODE B!

Most codes will retain the same functionallity.

These codes Containt the same functionality between modes, however may still require different

parameters.

G00, G01, G02, G03, G04, G06, G07, G08, G09, G10, G11, G17, G18, G19, G20, G21, G28, G40, G41, G42, G53, G54-G59, G54.1, G61, G64, G65, G66, G67, G70, G71, G72, G73, G74, G75, G76, G80, G81, G82, G83, G84, G85, G86, G87, G88, G89, G93, G96, G97.

This table will show the main differences

Mode A Mode B

G50 Max RPM G92 Max RPM

G98 Per Min Feed G94 Per Min Feed

G99 Per Rev Feed G95 Per Rev Feed

No Code G98 Return to Initial Level

No Code G99 Return to R point Level

G94 End Face Turning Cycle G79 End Face Turning Cycle

G92 Thread Cutting Cycle G78 Thread Cutting Cycle

No Code X,Y,Z Coordinates Abs G90 Absolute Programming

No Code U,V,W Coordinates Inc G91 Incremental Programming

G90 Outer/Inner Cutting Cycle

G77 Outer/Inner Cutting Cycle

G32 Thread Cutting G33 Thread Cutting

The table above can be used as a reference guide to change

codes to alter an existing program.

II. Two Axis Lathe Programming Guide Tools

1. OD turning tool

2. OD threading tool

3. ½ inch drill

4. ID turning tool

5. 1/8 cutoff/grooving tool

To start a Lathe Program begin with a safe startup line.

% O1234(SAFE STARTUP LINE EXAMPLE) G20 G40 G80 G90 G28 U0. W0. (SENDS TURRET HOME) From This point call up a tool and set the max rpm and turn on the spindle. T0101 (CALL TOOL ONE OFFSET ONE) G92 S1000 (MAX RPM 1000RPM) G97 M3 S500 (TURN THE SPINDLE ON AT 500 RPM) Now we are ready to call up a work offset and command motion G54 G0 G95 Z.25 From this point on we are able to begin programming features

From this point on most likely the next operation would be facing the part. We will leave stock to take off later with a finish cycle.

Note: you must leave stock with a roughing cycle.

Tip: the position right before a canned cycle should be a safe position or rapid position.

X2.25 G96 G1X2.1 F.004 (CONSTANT SURFACE SPEED)

G72 U.1 R.1 (U is depth of cut R is retract distance) G72 P1 Q2 U0.005 W0.005 F.002 S1000 T0101 N1 G1 X2.0 Z0. X-.04 N2 Z.05 G0 X2.25 Z.25 (RETURN TO SAFE POSITION)

Since the face is now roughed we can come back in with a finish pass

G70 P1 Q2 F.002 S1000 X2.25 Z.25 (RETURN TO SAFE POSITION) In this example the profile was used from the roughing cycle.

Next step is to cut a profile. The profile for this example will be a basic step cylinder.

G71 U.1 R.1 G71 P3 Q4 U.005 W.002 F.005 S1000 N3 G1 Z.05 X.95 Z0. X1.Z-.025 Z-.5 X1.2 X1.25 Z-.55 Z-1. G2 X1.75 Z-1.25 R.25 G1 X1.95 X2. Z-1.3 N4X2.05 X2.25 Z.25 (RETURN TO SAFE POSITION) Now the profile is roughed finishing can be done with one line of code. G70 P3 Q4 F.002 S1000 X2.25 Z.25 (RETURN TO SAFE POSITION) M5 (STOP SPINDLE)

The code above should display an image similar to this in the graphics screen.

Note: G73 can also be used to rough a profile, or to do multiple finish passes to step down a profile.

Tool change Before the turret is indexed to the next tool it should be at the home position.

G28 U0. W0.

Now the turret can index and setup the speed for the next tool and move to position.

T0202 G92 S1000 G97 M3 S500 G54 G0 G95 Z.25 X2.25

From this point an OD thread will be cut.

There are 3 cycles for threading in Mode B.

G33

Long Hand

G33 X___ Z___ P___(Start angle) F___

G76

Multiple Threading Cycle

G76 PXXXXXX Q___ R___

G76 X(U)___ Z(W)___ R___ Q___ F___

G78

Threading Cycle (box cycle)

G78 X___ Z___ R____(taper) F____

For this example G76 will be used

G76 P XX XX XX Q___ R___

The first two XX - number of finish passes 01-99

The second two XX – How many revs for a lead out 00-99

The final two XX – Angle of the tool tip (60 for 60 degree V)

Q- depth of cut

R – Finish Allowance

G76 X(u)___ Z(w)___ R___ P___ Q___ F___

X – Minor Diameter

Z – End position

R – Start radius minus end radius (taper)

P – Thread Height (major – minor)

Q – Depth for first pass

F – Thread lead

G76 P010060 Q.01 R.002 G76 X.875 Z-.25 R0 P.125 Q.015 F.076 X2.25 Z.25 (RETURN TO SAFE POSITION) M5 (STOP SPINDLE)

At this point the part should resemble this in the graphics. Now that the threading has finished the machine is ready to call up another tool. The turret must be sent to the home position. G28 U0. W0. (SENDS TURRET HOME)

The next step is going to be drilling. The drill must be positioned T0303 G92 S1000 G97 M3 S700 G54 G0 G95 Z.25 X0.

There are several drilling cycles

G81 X___ Z___ F___ S___ (standard drill cycle)

G82 X___ Z___ P___ F___ S___ (dwell drill cycle)

G83 X___ Z___ P___ Q___ F___ S___ (peck drill cycle)

G83.1 X___ Z___ P___ Q___ F___ S___ (chip breaker)

X - X position

Z - Depth

F - Feed

S - Speed (RPM)

P - Dwell at the bottom of the hole

Q - Peck depth

G83 X0. Z-1.5 P1. Q.1 F.005 S700 G80 (CANCELS CANNED CYCLE) M5 (STOP SPINDLE)

The drill needs to be sent home.

G28 U0. W0. (SENDS TURRET HOME)

There is also Rigid tapping available. This is not in the sample code, however here is the information for the canned cycle.

Here is an example line of code for rigid tapping

M29 G84 X0. Z-.5 P1. Q.25 F.07692 S250

Q is Peck depth.

The next process is boring.

This follows the same principles as OD turning and facing.

T0404 G92 S1000 G97 M3 S500 G54 G0 G95 Z.25 X.5 G96 G71 P5 Q6 U.005 W.002 F.005 S1000 N5 G1 X.85 Z.05 Z0. X.75 Z-.05 Z-1. N6 X.5 G0 Z.25 X.5 G70 P5 Q6 F.002 S1000 G0 Z.25 X.5

M5 (STOP SPINDLE)

Once those operations are completed the tool should be sent home for a tool change. G28 U0. W0. (SENDS TURRET HOME)

Now the grooving tool should be called up in the program, and we can position to a safe position T0505 G92 S1000 G97 M3 S500 G54 G0 G95 Z-.3 X2.25

There is no canned cycle for grooving; everything must be programmed point to point. X1.1 Z-.3 G96 G1 X.865 F.005 G0 X1.1 Z-.25 G1 X1. F.002 Z-.275 G3 X.95 Z-.3 R.025 G1 X.865 G0 X1.1 Z-.35 G1 X1. F.002 Z-.325 G2 X.95 Z-.3 R.025 G1 X.865 G0 X2.25 M5 (STOP SPINDLE) (DO NOT USE THIS LINE IF THE MACHINE IS A 2 AXIS LATHE. A SPINDLE STOP IS ONLY NEEDED IF ANOTHER TOOL WERE TO BE CALLED.)

If the machine has live tool capabilities please skip cutoff block

Live tool operations will be programmed before cutoff.

Cutoff Omit the 4 lines below (green) for two axis example; these 4 lines are only for reference for live tool examples. T0505 G92 S1000 G97 M3 S500 G54 Z-1.75 X2.1 G1 X1.85 F.003 G0 X2.1 Z-1.65 G1 X2. Z-1.7 X1.9 Z-1.75 X-.04 X2.25 M5 (STOP SPINDLE) G28 U0. W0.

Two axis sample program % O1234(TWO AXIS SAMPLE) G20 G40 G80 G90 G28 U0. W0. (SENDS TURRET HOME) T0101 (CALL TOOL ONE OFFSET ONE) G92 S1000 (MAX RPM 1000RPM) G97 M3 S500 (TURN THE SPINDLE ON AT 500 RPM) G54 G0 G95 Z.25 X2.25 G96 G1X2.1 F.004 G72 U.1 R.1 (U IS DEPTH OF CUT R IS RETRACT DISTANCE) G72 P1 Q2 U0.005 W0.005 F.002 S1000 T0101 N1 G1 X2.0 Z0. X-.04 N2 Z.05 G0 X2.25 Z.25 (RETURN TO SAFE POSITION) G70 P1 Q2 F.002 S1000 X2.25 Z.25 (RETURN TO SAFE POSITION) G71 U.1 R.1 G71 P3 Q4 U.005 W.002 F.005 S1000 N3 G1 Z.05 X.95 Z0. X1.Z-.025 Z-.5 X1.2 X1.25 Z-.55 Z-1. G2 X1.75 Z-1.25 R.25 G1 X1.95 X2. Z-1.3 N4X2.05 X2.25 Z.25 (RETURN TO SAFE POSITION) G70 P3 Q4 F.002 S1000 X2.25 Z.25 (RETURN TO SAFE POSITION) M5 (STOP SPINDLE) G28 U0. W0. (SENDS TURRET HOME) T0202 G92 S1000 G97 M3 S500 G54 G0 G95 Z.25

X2.25 G76 P010060 Q.01 R.002 G76 X.875 Z-.25 R0 P.125 Q.015 F.076 X2.25 Z.25 (RETURN TO SAFE POSITION) G28 U0. W0. (SENDS TURRET HOME) M5 (STOP SPINDLE) T0303 G92 S1000 G97 M3 S700 G54 G0 G95 Z.25 X0. G83 X0. Z-1.5 P1. Q.1 F.005 S700 G80 (CANCELS CANNED CYCLE) G28 U0. W0. (SENDS TURRET HOME) M5 (STOP SPINDLE) T0404 G92 S1000 G97 M3 S500 G54 G0 G95 Z.25 X.5 G96 G71 P5 Q6 U.005 W.002 F.005 S1000 N5 G1 X.85 Z.05 Z0. X.75 Z-.05 Z-1. N6 X.5 G0 Z.25 X.5 G70 P5 Q6 F.002 S1000 G0 Z.25 X.5 G28 U0. W0. (SENDS TURRET HOME) M5 (STOP SPINDLE) T0505 G92 S1000 G97 M3 S500 G54 G0 G95 Z-.3 X2.25 X1.1 Z-.3 G96 G1 X.865 F.005 G0 X1.1

Z-.25 G1 X1. F.002 Z-.275 G3 X.95 Z-.3 R.025 G1 X.865 G0 X1.1 Z-.35 G1 X1. F.002 Z-.325 G2 X.95 Z-.3 R.025 G1 X.865 G0 X2.25 Z-1.75 X2.1 G1 X1.85 F.003 G0 X2.1 Z-1.65 G1 X2. Z-1.7 X1.9 Z-1.75 X-.04 G0X2.25 M5 (STOP SPINDLE) G28 U0. W0. (SENDS TURRET HOME) M30

STOP! If the machine to be programmed is one of the

following machines all the post information needed is above.

TM6 TM8

TM10 TM12 TM18 TM18L TMX8

TMX10 This includes any machine above with the letter

“i” afterwards

III. Live Tool Examples Tools 6. Live Drill .201 7. End mill .25 8. End mill .25

When dealing with Live Tool machines there must be an understanding of these simple codes and how to utilize them.

First off there are two machine modes, milling and turning.

M130 – Turning mode

M131 – Milling Mode

All these codes establish are what spindle will be turning, as well as which spindle will everything be calculated from; such as Feed Per Revolution. Turning mode is main spindle (or sub on MYS machines). Milling mode is Live tools.

There are also 3 axis Maps that apply to the TMM machines.

G101 – Milling on the face of the part

G102 – Milling on the diameter of the part

G109 – Turning or positional drilling using the c axis

When Using a Milling Map C axis positions cannot be used! Those maps do not contain a C axis, everything is interpolated from X and Y coordinates.

G101 AXIS MAP DIAGRAM

Notice that the axes are the same layout as turning with the addition of the Y axis.

This map will always use the milling mode (M131)

Again there is no C axis in this map!

The intended purpose of this map is to handle all polar interpolation internally from X and Y positions. This map is suitable for all milling and drilling operations on the face of the part, however drilling can be done using C axis positions in the G109 map.


This map will swap the X and Z axis. Notice the Y axis is wrapped around the diameter of the bar to be programmed, and that Z0 is on the diameter of the bar.

This map will need to be used in conjunction with an additional code to establish a working diameter.

G25 Q (whatever the working diameter is)

This map is suitable for all milling and drilling on the outside of the part, however drilling can be done on the diameter of the part using C positions if desired in the G109 map.

No C axis positions are allowed in this map!


This axis map uses standard axes for a lathe and is suitable for all turning operations.

The typical mode for this map is the Turning Mode (M130)

This map also can be used in conjunction with the Milling Mode (M131) for drilling holes with X, Z, and C positions.

Utilizing the G109 map properly for drilling

First call the proper tool and change modes.

T0606 G109 (TURNING MAP) M131 (MILLING MODE) G7 (RADIUS PROGRAMMING) G97 M33 S1500 (TURN SPINDLE ON AT FIXED RPM) G54

Now that the proper tool has been called up in the proper mode an approach can be designated. G0 Z.25 C0. X.75 Z-.75

Now a canned cycle can be executed. G98 G81 X.75 Z-1.625 F.002 S1500 (DRILLING CANNED CYCLES) C45. C90. C135. C180. C225. C270. C315. G80 (CANCEL CANNED CYCLE) G00 X2.25 Z.25 G8 (DIAMETER PROGRAMMING) M130 M35 (STOP LIVE TOOL)

In this mode all canned cycles can be executed and are available.

After the holes are drilled the turret should be positioned to index the turret G28 U0. W0. (SENDS TURRET HOME)

It is important to place a G7 at the beginning of any live tool operation to program in radius mode, if this isn’t done all x number will need to be doubled.

It is equally important to return to G8 after the features are cut that way if a turning process follows milling the turning can be programmed in diameter.

When programming a lathe it is also important to program in Feed Per Rev if possible. The advantage to this is the spindle will give feedback as to what the RPM is and calculate the IPM from there. The biggest advantage to this is if a spindle were to stall, the machine will recognize that the spindle has slowed or stopped and adjust the feed accordingly. On milling tools this is not acceptable because they normally have multiple flutes, however for all drilling, tapping, and turning all feed rates should be in Feed Per Rev.

The next step will be to mill to flats on the side of the part using cutter comp.

The next tool will be loaded and used to mill in the G101 map.

The G109 mode will be used to execute an approach. Programming in the way allows the C axis to be positioned without forcing the tool to travel through the center of the part.

T0707 G109 M131 G97 M33 S1500 G54 G0 Z.25 C0. X2.5

Now that the approach move has been programed cutting motion with the proper map can be executed.

G101 G7 G94 X-.5 Y1.25 Z-1.625 G1 G41 Y.95 F10. X.5 G40 Y1.25 G0 Z.25 G109 X2.5 C180. G101 X.5 Y-1.25 Z-1.625 G1 G41 Y-.95 F10. X-.5 G40 Y-1.25 G0 Z.25 G109

M130 G95 G8 M35 (STOP LIVE TOOL)

At this point your part should resemble the picture above. Now the turret should be indexed so that the radial tool can cut on the surface of the bar. G28 U0. W0. (SENDS TURRET HOME)

The next and final step for programming a live tool lathe will be to program machining on the diameter of the part. The tool will need to be indexed to and positioned.

T0808 G102 G7 G25 Q2. M131 G97 M33 S1500 G54 G94 G0 X-1.25 Z.25

The diameter established is a 2 inch diameter; this is established with the G25 Q2. line. If we multiply the diameter by 3.1415 we get 6.2831. That means 0.000 will be at 0 degrees, and 6.2831 will be 360 degrees. A CAD/CAM system will generate the proper values; in this example the values are given. This axis map must have a Q value greater than .1, Q0. Is not acceptable.

This example is done with point to point data

Y-.3927 G01 Z-.125 F10. Y.3927 G0 Z.25 Y2.7488 G1 Z-.125 F10. Y3.5342 G0 Z.25

From here all that is needed is to restore the settings so that we could return to a turning mode.

G109

M130 G95 G8 (DIAMETER PROGRAMMING) M35 (STOP LIVE TOOL)

At this point the part should look like this

After every live tool operation, before a tool change the map and mode will need to be switch back to Turning

G109 M130

% O1234(SAFE STARTUP LINE EXAMPLE) G20 G40 G80 G90 G28 U0. W0. (SENDS TURRET HOME) T0101 (CALL TOOL ONE OFFSET ONE) G92 S1000 (MAX RPM 1000RPM) G97 M3 S500 (TURN THE SPINDLE ON AT 500 RPM) G54 G0 G95 Z.25 X2.25 G96 G1X2.1 F.004 G72 U.1 R.1 (U IS DEPTH OF CUT R IS RETRACT DISTANCE) G72 P1 Q2 U0.005 W0.005 F.002 S1000 T0101 N1 G1 X2.0 Z0. X-.04 N2 Z.05 G0 X2.25 Z.25 (RETURN TO SAFE POSITION) G70 P1 Q2 F.002 S1000 X2.25 Z.25 (RETURN TO SAFE POSITION) G71 U.1 R.1 G71 P3 Q4 U.005 W.002 F.005 S1000 N3 G1 Z.05 X.95 Z0. X1.Z-.025 Z-.5 X1.2 X1.25 Z-.55 Z-1. G2 X1.75 Z-1.25 R.25 G1 X1.95 X2. Z-1.3 N4X2.05 X2.25 Z.25 (RETURN TO SAFE POSITION) G70 P3 Q4 F.002 S1000 X2.25 Z.25 (RETURN TO SAFE POSITION) M5 (STOP SPINDLE) G28 U0. W0. T0202 G92 S1000 G97 M3 S500 G54 G0 G95 Z.25

X2.25 G76 P010060 Q.01 R.002 G76 X.875 Z-.25 R0 P.125 Q.015 F.076 X2.25 Z.25 (RETURN TO SAFE POSITION) G28 U0. W0. M5 (STOP SPINDLE) T0303 G92 S1000 G97 M3 S700 G54 G0 G95 Z.25 X0. G83 X0. Z-1.5 P1. Q.1 F.005 S700 G80 (CANCELS CANNED CYCLE) G28 U0. W0. M5 (STOP SPINDLE) T0404 G92 S1000 G97 M3 S500 G54 G0 G95 Z.25 X.5 G96 G71 P5 Q6 U.005 W.002 F.005 S1000 N5 G1 X.85 Z.05 Z0. X.75 Z-.05 Z-1. N6 X.5 G0 Z.25 X.5 G70 P5 Q6 F.002 S1000 G0 Z.25 X.5 G28 U0. W0. M5 (STOP SPINDLE) T0505 G92 S1000 G97 M3 S500 G54 G0 G95 Z-.3 X2.25 X1.1 Z-.3 G96 G1 X.865 F.005 G0 X1.1

Z-.25 G1 X1. F.002 Z-.275 G3 X.95 Z-.3 R.025 G1 X.865 G0 X1.1 Z-.35 G1 X1. F.002 Z-.325 G2 X.95 Z-.3 R.025 G1 X.865 G0 X2.25 M5 (STOP SPINDLE) G28 U0. W0. T0606 G109 (TURNING MAP) M131 (MILLING MODE) G7 (RADIUS PROGRAMMING) G97 M33 S1500 (TURN SPINDLE ON AT FIXED RPM) G54 G0 Z.25 C0. X.75 Z-.75 G98 G81 X.75 Z-1.625 F.002 S1500 C45. C90. C135. C180. C225. C270. C315. G80 G00 X2.25 Z.25 G8 (DIAMETER PROGRAMMING) M130 M35 (STOP LIVE TOOL) G28 U0. W0. T0707 G109 M131 G97 M33 S1500 G54 G0 Z.25 C0. X2.5

G101 G7 G94 X-.5 Y1.25 Z-1.625 G1 G42 Y.95 F10. X.5 G40 Y1.25 G0 Z.25 G109 X2.5 C180. G101 X.5 Y-1.25 Z-1.625 G1 G42 Y-.95 F10. X-.5 G40 Y-1.25 G0 Z.25 G109 M130 G95 G8 M35 (STOP LIVE TOOL) G28 U0. W0. T0808 G102 G7 G25 Q2. M131 G97 M33 S1500 G54 G94 G0 X-1.25 Z.25 Y-.3927 G01 Z-.125 F10. Y.3927 G0 Z.25 Y2.7488 G1 Z-.125 F10. Y3.5342 G0 Z.25 G109

M130 G95 G8 (DIAMETER PROGRAMMING) M35 (STOP LIVE TOOL) G28 U0. W0. T0505 G92 S1000 G97 M3 S500 G54 Z-1.75 X2.1 G1 X1.85 F.003 G0 X2.1 Z-1.65 G1 X2. Z-1.7 X1.9 Z-1.75 X-.04 X2.25 M5 (STOP SPINDLE) G28 U0. W0.



Please refer to the 2 axis section for cutoff

example.

TMM8 TMM10

This includes any machine above with the letter “i” afterward

IV. Live tool Y axis No additional tools will need to be setup

There are two additional axis map codes used for milling on the main spindle utilizing the Y axis.

G103 - Milling on the face of the part with Y axis

G104 - Milling on the diameter of the part with Y axis

Everything is programmed very similar to the G101 map code. The only differences are

C axis can be used to position the material.

No polar interpolation in this map.

Y axis is used instead of polar interpolation.


Why use a Y axis?

On the face of the part there isn’t any reason to use the Y axis in theory. The machine with a G101 map could very easily hit every angle, and cut every feature. However Angular accuracy is decreased as the machine gets further away from the center of rotation.

The Y axis is a True linear move, and will cut a true flat and will help eliminate angular inaccuracies.

The C axis with the G101 map will cut a flat surface, however it is polar interpolation and may not be as flat as a surface cut with the linear Y axis in the G103 map. The inaccuracy from the G101 map will be very small and in some instances very difficult to measure.

If the work is small, smaller than 2 inches, and the tool will be traveling close to center it may be best to use the G103 map so the C axis isn’t rotating around as much. This really is personal preference.

Milling with the Linear Y G103 Axis Map

First step is to call the tool

On all Y axis lathes the tool change block will be different from the two axis and live tool machine.

Since we are adding another axis an offset for the axis must be able to be applied in case live tools are shifted, or gang tool holders are used.

G103 (ALLOWS THE Y AXIS TO BE USED) T0707 (CALLS UP THE TOOL AND APPLIES OFFSET) Y0. (SHIFTS THE TOOL SO THAT THE TIP IS AT THE CENTER OF ROTATIONS) G109 (RETURNS TO TURNING AXIS MAP)

Now the tool has been correctly positioned we are ready to turn the live tool spindle on and start an approach.

G103 G7 M131 G97 M33 S1500 G54 G94 G0 C0. Z.25 X.625

From here a square profile will be milled with the y axis Y.625 G01 Z-.875 F50. Y-.625 F10. X-.625 Y.625 X.625 G0 Z.25

Next we will return everything back to turning settings and call up the next tool. G109 M130 G95 G8 M35 G28 U0. W0.

From this point the final axis map code for the main spindle will be covered.


This axis map is defined similar to the G102 however the Y axis is not wrapped around the part, in this map it is linear up and

down.

This map can use a G25 Q0. If programming around the center is desired, or programmed where Z0. is the diameter of the bar.

To begin a tool must be called and positioned

G103 (ALLOWS THE Y AXIS TO BE USED) T0606 (CALLS UP THE TOOL AND APPLIES OFFSET) Y0. (SHIFTS THE TOOL SO THAT THE TIP IS AT THE CENTER OF ROTATIONS) G109 (RETURNS TO TURNING AXIS MAP) G104 G7 G25 Q0. M131 G97 M33 S1500 G54 G94 G0 C0. X-.75 Z1.25

From here a pocket can be programmed Y.5 G01 Z.5 Y-.5 G0 Z1.25 G109 M130 G95 G8 M35 G28 U0. W0.



Please refer to the 2 axis section for cutoff

example.

TMX8MY TMX10MY

This includes any machine above with the letter “i” afterward

The following will apply to sub spindle machines.

Part Transfer

The first step is recognizing that the work will be transferred and positioned inside the machine so we will need to setup a new work offset.

On the input screen press part setup.

At the point the screen will look similar to this.

The G54 value will most likely not be 10 inches, this is only here as an example.

On this page there needs to be an offset with the sub spindle check box selected.

This will allow the sub spindle to rotate instead of the mail spindle.

From here an offset for the “W” axis can be set on the main spindle offset and sub spindle

The offset should be set with the sub spindle on the face of the part. This will allow the “W” axis to be positioned to the face of the part, and then feed onto the part an exact distance.

On the last screen press additional offsets, this page with the “W” axis will become available.

The check box for the “W” offset will need to be selected, and then the machine can jog to the front of the part and the position can be stored.

The spindle can then be jogged to a safe position and an offset can be stored for the position of the “W” offset relative to the second offset. This position is normally around 2 inches in front of the limit.

When the machine is setup this way it is very easy to program the transfer because any move positive will be in front of the part, and any move negative will be onto the part.

The part transfer should be programmed as follows

G109 (TURNING MAP)

M130 (TURNING MODE)

G0 G54 (CALLS MAIN SPINDLE OFFSET)

M203:0 (COMMANDS SPINDLE SYNC AT 0 DEGREES)

G97 M3 S500 (TURNS THE MAIN SPINDLE ON AT A FIXED RPM)

M241 (ALLOWS THE SUB SPINDLE TO OPEN WHILE ROTATING)

M114 (SUB-SPINDLE OPEN)

G94 (INCHES PER MINUTE)

G152 G0 W1. (G152 COMMANDS THAT THE W AXIS IS TO MOVE)

M186 (ACTIVATE W AXIS TORQUE MONITORING)

G152 G1 G6 W-.5 F50. (COMMANDS THE W AXIS TO MOVE WITH TORQUE MONITORING ON)

M187 (STOP TORQUE MONITORING)

M115 (CLOSE SUB SPINDLE CHUCK)

M231 (ALLOWS MAIN SPINDLE TO OPEN WHILE CHUCK IS ROTATING)

M69 (OPEN THE MAIN CHUCK)

G55 G152 G0 W0. (MOVE W AXIS TO THE SECOND PART OFFSET)

M68 (CLOSE MAIN SPINDLE)

M5 (STOP SPINDLE)

M205 (CLEAR SPINDLE SYNC)

This code is acceptable to transfer the part, however if bar stock is going to be used the sub spindle will need to pull the stock out to the next position and a cutoff will need to be programmed.

The part cutoff with bar pull should be programmed as

follows

G103 (CALLS MAP WITH Y AXIS AVAILABLE)

T0505 (CALLS TOOL AND APPLIES OFFSETS) Y0. (SHIFTS THE TOOL TO Y 0.) G109 (TURNING MAP) G92 S1000 (SETS MAX RPM AT 1000RPM) G97 M3 S500 (TURNS THE SPINDLE ON AT 500RPM) G54 (CALLS MAIN SPINDLE OFFSET) Z.05 (MOVES THE CUTOFF TOOL INFRONT OF PART) G109 (TURNING MAP)

M130 (TURNING MODE)

G0 G54 (CALLS MAIN SPINDLE OFFSET)

M203:0 (COMMANDS SPINDLE SYNC AT 0 DEGREES)

M241 (ALLOWS THE SUB SPINDLE TO OPEN WHILE ROTATING)

M114 (SUB-SPINDLE OPEN)

G94 (INCHES PER MINUTE)

G152 G0 W1. (G152 COMMANDS THAT THE W AXIS IS TO MOVE)

M186 (ACTIVATE W AXIS TORQUE MONITORING)

G152 G1 G6 W-.875 F50. (COMMANDS THE W AXIS TO MOVE WITH TORQUE MONITORING ON)

M187 (STOP TORQUE MONITORING)

M115 (CLOSE SUB SPINDLE CHUCK)

M231 (ALLOWS MAIN SPINDLE TO OPEN WHILE CHUCK IS ROTATING)

M69 (OPEN THE MAIN CHUCK)

G152 G0 W.975 (MOVE W AXIS TO CUTOFF POSITION)

(Part length – Feed distance onto the part + cutoff tool width + stock to face off for next part +

stock for sub spindle to face)

(1.625 - .875 + .125 + .05 + .05 = .975)

M68 (CLOSE MAIN SPINDLE)

G95

G0 X2.1 G1 X1.85 F.003 G0 X2.1 Z.15 G1 X2. Z.1 X1.9 Z.05 X-.04

X2.25 M5 (STOP SPINDLE)

M205 (CLEAR SPINDLE SYNC)

G55 G152 W0. (POSITION SUB SPINDLE FOR SECOND WORK OFFSET)

G28 U0. (POSITION TOOL AT HOME IN X POSITION FOR TOOL CHANGE)

G28 W0. (POSITION TOOL AT HOME IN Z POSITION FOR TOOL CHANGE)

The main spindle graphics do not show the part being pulled.

A Hurco MYS machine (equipped with a sub spindle) can turn between spindles. The example above should be used up until the move to position the part for the cutoff, at that point you could insert turning, milling, drilling, or any operation desired instead of cutting the part off.

The machine will need to perform the spindle sync and the positioning of the bar inside of the program, so all features will need to be programmed and ran at that time.

The final examples will show how to program on the sub spindle.

Tools

9. Sub Spindle Turning Tool

Turning on the sub spindle is identical to the main with one difference, all moves will be positive instead of negative.

G103 T0909 Y0. G109 G92 S1500 G97 M3 S500 G0 G95 Z-.25 X2.25 G96 G1 X2.1 F.004 (CONSTANT SURFACE SPEED) G72 U.1 R.1 (U is depth of cut R is retract distance) G72 P5 Q6 U0.005 W0.005 F.002 S1000 T0101 N5 G1 X2.0 Z0. X-.04 N6 Z-.05 G0 X2.25 Z-.25 (RETURN TO SAFE POSITION) G70 P5 Q6 F.002 S1000 G0 X2.25 Z-.25 (RETURN TO SAFE POSITION) M5 (STOP SPINDLE) G28 U0. G28 W0.

When machining on the sub spindle the X should be sent home first and then the Z.

lathe programming guide i. steps to make sure your lathe

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