Doosan PUMA MX Service Manual

DOOSAN PUMA MX Series

FANUC Series 31i-Model A5

Programming Examples Manual

[e-mail]

Revision

(0

2012)

2.1

7/17/

- 1 -

DISCLAIMER OF WARRANTY:

This user manual and the accompanying files are sold or supplied "as is" and without warranties as to
performance of merchantability or any other Warranties whether expressed or implied.

While every effort has been made to verify the accuracy of the content provided, it is the responsibility
of those programming and operating Doosan MX Series Multi-Tasking CNC Machining Centers to
abide by standards of safe programming, setup and operation of any CNC Machine Tool.

Because the various machine configurations, programming methods, individual work pieces and
setup/operator skill levels all effect the actual operation of the machine,
NO WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE IS OFFERED.

The user must assume the entire risk of using the information provided in this manual and
accompanying files.

Any typographical errors should be brought to the attention of AmTTech immediately.

South Texas

10010 Houston Oaks Dr.
Houston, TX 77064
[phone]

North Texas

3301 Pleasant Valley Ln.
Arlington, TX 76015
[phone]

Service & Support

Service Support Center: [phone]

- 2 -

TABLE OF CONTENTS

Standard Turning

Pg 3



ANSI/ISO Holder Identification Pg 4



Insert Identification Pg 5



B-Axis Spindle Function – G490 Pg 9



Programming Example #1 - Upper Pg 10



Programming Example #2 - Lower Pg 13

Pinch Turning

Pg 16



Programming Example #3 – Upper & Lower Pg 17

Simultaneous Turning

Pg 20



Programming Example #4 - Upper & Lower w/Part Transfer Pg 20

Advanced Turning

Pg 25



B-Axis Spindle Function – G400 Pg 26



Programming Example #5 - Upper Pg 28



Programming Example #6 - Upper Pg 31

Advanced Drilling

Pg 34



Programming Example #7 - Upper Pg 34



Programming Example #8 - Upper Pg 36



Programming Example #9 - Upper Pg 38



B-Axis Spindle Tilt Function – G368/G369

- Upper Pg 40



Programming Example #10 - Upper Pg 41

Advanced Milling

Pg 43



Programming Example #11 – Upper (C-Axis/Y-Axis) Pg 43



Programming Example #12 – Upper (C-Axis) Pg 46

Advanced 5-Axis Operations

Pg 51



Programming Example #13 – Upper (5-Axis Milling) Pg 51



Doosan TCP Mode for 5-Axis Machining G700/G701

Pg 53



CAM System Post-Processor Information Pg 55



APT Cutter Location File Generated by CAM System

Pg 56



NC Code File Generated by CAM System Post-Processor

Pg 61

Miscellaneous

Pg 66



Servo Driven Tail Stock Pg 66



Macro-B OD Jaw Program Pg 66

- 3 -

DOOSAN PUMA MX Series – Standard Turning

The Doosan Puma MX Series is a powerful Multi-Task Machining Center.
Its core is built upon the concepts a standard CNC Turning Center.
As such, it handles standard CNC Turning quite well.

The basic differences in programming are not in the tool path motion but in the following:



Preparation and positioning before a Turning Operation



Tool Changes and Offsets



End of an Operation/Preparation for the next operation.

By standardizing the NC Code data in these areas, we can come up with a basic skeleton or outline
for all machining operations. This standardization will aid in the creation of a Post-Processor for any
given CAM system that a user may have for generating NC programs.

As ANSI/ISO Stick Tooling is well established for CNC Turning Operations, the first four examples in
this user manual will be using this standard stick tooling along with the proper CAPTO® C6 holder
and adapters for that tooling.

As all Doosan Puma MX Series Multi-Task Machining Center have the common element of the
Nutating B-Axis Head, our first standard turning example will be done using the B-Axis Head for all
operations. We will then progress to using the Lower Turret independently and then integrate it into
synchronized operations using both the Upper B-Axis Head and the Lower Turret.

- 4 -

- 5 -

Insert Designation Chart

Shape

(e.g. "CNMG432" / "CCMT32.51")

Code Letter

Description

Diagram

Nose Angle

A

85° parallelogram

85°

B

82° parallelogram

82°

C

80° diamond

80°

D

55° diamond

55°

E

75° diamond

75°

H

hexagon

120°

K

55° parallelogram

55°

L

rectangle

90°

M

86° diamond

86°

N

55° parallelogram

55°

O

octagon

135°

P

pentagon

108°

R

round

full radius

S

square

90°

T

triangle

60°

V

35° diamond

35°

W

trigon

80°

X

sp. parallelogram

85°

Clearance or Relief Angle

(e.g. "CNMG432" / "CCMT32.51")

Code Letter

Angle

Diagram

N

0°

A

3°

B

5°

C

7°

P

11°

D

15°

E

20°

F

25°

G

30°

- 6 -

Tolerance

(e.g. "CNMG432" / "CCMT32.51")

Code

Letter

Cornerpoint
(inches)

Thickness
(inches)

Inscribed
Circle (in)

Cornerpoint
(mm)

Thickness
(mm)

Inscribed
Circle (mm)

A

.0002"

.001"

.001"

.005mm

.025mm

.025mm

C

.0005"

.005"

.001"

.013mm

.025mm

.025mm

E

.001"

.001"

.001"

.025mm

.025mm

.025mm

F

.0002"

.005"

.0005"

.005mm

.025mm

.013mm

G

.001"

.001"

.001"

.025mm

.13mm

.025mm

H

.0005"

.001"

.0005"

.013mm

.025mm

.013mm

J

.002"

.001"

.002-.005"

.005mm

.025mm

.05-.13mm

K

.0005"

.001"

.002-.005"

.013mm

.025mm

.05-.13mm

L

.001"

.001"

.002-.005"

.025mm

.025mm

.05-.13mm

M

.002-.005"

.005"

.002-.005"

.05-.13mm

.13mm

.05-.15mm

U

.005-.012"

.001"

.005-.010"

.06-.25mm

.13mm

.08-.25mm

Hole / Chipbreaker

(e.g. "CNMG432" / "CCMT32.51")

Code Letter

Diagram

Hole

Hole Shape

Chipbreaker Type

A

Yes

Cylindrical

None

B

Yes

70-90° double countersink

None

D

Yes

Cylindrical

None

E

No

None

F

No

Double-sided

G

Yes

Cylindrical

Double-sided

H

Yes

70-90° single countersink

Single-sided

M

Yes

Cylindrical, or dbl countersink

Single-sided

N

No

None

P

Yes

Cylindrical

Hi-double positive

Q

Yes

40-60° double countersink

None

R

No

Single-sided

S

Yes

Cylindrical

Hi-double positive

T

Yes

40-60° double countersink

Single-sided

U

Yes

40-60° double countersink

Double-sided

W

Yes

40-60° double countersink

None

Z

Yes

Cylindrical

Double-sided hi-double positive

- 7 -

Size

(e.g. "CNMG432" / "CCMT32.51")

Inscribed Circle Size

ISO Code No. (metric cutting edge length) by shape code letter of insert

ANSI

Code No.

decimal in.

fractional in.

CDRSTVW

0.5

.0625"

1/16

1.2

.15625"

5/32

1.5

.1875"

3/16

04 (4mm)

5mm

04 (4mm)

04 (4mm)

8mm

8mm

S3

1.8

.21875"

7/32

2

.25"

1/4

06 (6mm)

07 (7mm)

06 (6mm)

06 (6mm)

11 (11mm)

11 (11mm)

04 (4mm)

2.5

.3125"

5/16

08 (8mm)

9mm

07 (7mm)

07 (7mm)

13 (13mm)

13 (13mm)

05 (5mm)

3

.375"

3/8

09 (9mm)

11 (11mm)

09 (9mm)

09 (9mm)

16 (16mm)

16 (16mm)

06 (6mm)

3.5

.4375"

7/16

11mm

13mm

11 (11mm)

11 (11mm)

19 (19mm)

19mm

7mm

4

.5"

1/2

12 (12mm)

15 (15mm)

12 (12mm)

12 (12mm)

22 (22mm)

22 (22mm)

08 (8mm)

4.5

.5625"

9/16

14mm

17mm

14 (14mm)

14 (14mm)

24mm

24mm

9mm

5

.625"

5/8

16 (16mm)

19 (9mm)

15 (15mm)

15 (15mm)

27 (27mm)

27 (27mm)

10 (10mm)

5.5

.6875"

11/16

17mm

21mm

17 (17mm)

17 (17mm)

30mm

30mm

11mm

6

.75"

3/4

19 (19mm)

23 (23mm)

19 (19mm)

19 (19mm)

33 (33mm)

33 (33mm)

13 (13mm)

6.5

.8125"

13/16

7

.875"

7/8

22mm

27mm

22 (22mm)

22 (22mm)

38mm

38mm

15mm

81"1

25 (25mm)

31 (31mm)

25 (25mm)

25 (25mm)

44 (44mm)

44 (44mm)

17 (17mm)

10

1.25"

1-1/4

32 (32mm)

38mm

31 (31mm)

31 (31mm)

54 (54mm)

54 (54mm)

21 (21mm)

1.26"

32 (32mm)

Thickness

(e.g. "CNMG432" / "CCMT3

2.5

1")

ANSI

Code No.

ISO

Code No.

Decimal

Value

Fractional

Value

Millimeter

Value

1010.0625"

1/16

1.59mm

T1

0.078"

5/64

1.98mm

1.5020.094"

3/32

2.38mm

T2

0.109"

7/64

2.78mm

2030.125"

1/8

3.18mm

2.5T30.156"

5/32

3.97mm

3040.187"

3/16

4.76mm

05

0.219"

7/32

5.56mm

4060.25"

1/4

6.35mm

5070.313"

5/16

7.9mm

6090.375"

3/8

9.53mm

8

0.5"

1/2

12.7mm

Radius

(e.g. "CNMG432" / "CCMT32.51")

ANSI

Code No.

ISO

Code No.

Decimal

Value

Fractional

Value

Millimeter

Value

Null

Null

Wiper flat

Wiper flat

Wiper flat

VM0000

0.2000.004"

0.1mm

X

0.004"

0.1mm

0.5

0.008"

0.2mm

0000.008"

0.2mm

Y

0.008"

0.2mm

1040.016"

1/64

0.4mm

05

0.020"

0.5mm

2080.031"

1/32

0.8mm

10

0.040"

1.02mm

3120.047"

3/64

1.2mm

4160.062"

1/16

1.6mm

5200.078"

5/64

2mm

6240.094"

3/32

2.4mm

7290.109"

7/64

2.9mm

8320.125"

1/8

3.2mm

- 8 -

Wiper Lead Angle

(e.g. "SEKN42AFTN")

Code Letter

Angle

A

45°

D

60°

K

60°

E

75°

L

75°

P

0°

Wiper Clearance Angle

(e.g. "SEKN42AFTN")

Code Letter

Angle

C

7°

D

15°

E

20°

F

25-26°

G

30°

N

0°

P

11°

Cutting Edge Preparation

(e.g. "SEKN42AFTN")

Code Letter

Edge Preparation

F

sharp

E

honed

T

T-land

S

honed T-land

X

special chamfer

Cutting Direction

(e.g. "SEKN42AFTN")

Code Letter

Direction

R

right-hand cutting only

L

left-hand cutting only

N

both right-hand and left-hand cutting

- 9 -

B-Axis Spindle Function - G490

Automatic Milling Spindle Orientation

(G490)

The B-Axis Head Spindle contains a curvic-coupling on the front

face.
This allows for the possible indexing of the milling spindle in 30˚ increments.
The Doosan Puma MX series has two functions in commanding for milling spindle

orientation.

The G490 function automatically unclamps the milling spindle and orients to the designated
degree of rotation. After orientation, t h e milling spindle is automatically

clamped.

The other function (M279) is needed to command unclamping (M101) for the milling

spindle

before commanding orientation and to command clamping (M100) after

commanding

orientation. But this is only for maintenance by an authorized Service Engineer

.

Command

Format

G490 S

G490

: automatic milling spindle orientation

command

S

: orientation degree of milling

spindle

S0

→0˚

S300

→30˚

S1800→180

˚

S3600→360

˚

Note:

G490 S0 is automatically invoked during a Tool Change Sequence.
It is not required to command G49 S0 prior to a Tool Change Sequence.
However, all examples using the B-Axis Head will show this commanded explicitly
for clarity.

- 10 -

EXAMPLE #1 – STANDARD TURNING – UPPER UNIT ONLY

MATERIAL : AISI 4140 ALLOY STEEL - 275 HB
STOCK : 3.5 DIA ROUND BAR X 4.85 LONG
PROJECTION: 2.5 MINIMUM FROM JAW FACE
ADAPTERS : SANDVIK C6-ASHR-38130-16-A (2)
HOLDERS : MCLNR-164D (1), MVJNR-164D (1)
INSERTS : CNMG-432 (1), VNMG-431 (1)
SPINDLE : LEFT MAIN
WORK COORD: G54
ORIGIN : X0.0 = SPINDLE CENTERLINE, Z0.0 = FINISHED FACE
PROCESS : FACE, ROUGH & FINISH TURN HALF OF PART

- 11 -

%

O0001(MX-EXAMPLE #1 – UPPER UNIT ONLY)

(PREPARATION FOR START OF PROGRAM)
(INITIALIZE - RAPID, ZX PLANE, TNR COMP CANCEL, TLO CANCEL, CYCLE CANCEL, UPR FEED)

N1 G00 G18 G40 G49 G80 G99
N2 G00 G28 U0.0 V0.0 (ZERO RETURN X-AXIS & Y-AXIS)
N3 G00 G28 W0.0 (ZERO RETURN Z-AXIS)
N4 G00 G28 B0.0 (ZERO RETURN B-AXIS)
N5 G490 S0 (EXPLICIT B-AXIS SPINDLE ORIENTATION FOR TOOL CHANGE)
N6 G00 B-90.0 (EXPLICIT B-AXIS POSITIONING FOR TOOL CHANGE)
N7 M01

(PREPARATION FOR START OF OPERATION)

N8 G54 (WORK COORDINATE SELECTION)
N9 M06 T01001 (SANDVIK C6-ASHR-38130-16-A - MCLNR-164D - CNMG432)
N10 T02000 (STAGE NEXT TOOL)
N11 G490 S0 (EXPLICIT B-AXIS SPINDLE ORIENTATION FOR TOOL)
N12 G00 G28 W0.0 (ZERO RETURN Z-AXIS)
N13 G00 G28 B0.0 (ZERO RETURN B-AXIS)
N14 M138 (SHOWER BED COOLANT ON)
N15 M126 (COOLANT THROUGH TOOL ON)
N16 M34 (LEFT SPINDLE C-AXIS MODE OFF)
N17 M261 (SPINDLE WINDING LOW - REPLACES M41)
N18 G50 S2500 (MAXIMUM RPM CAP)
N19 G96 S500 M03 P11 (CONSTANT CUTTING SPEED MODE - 500 FPM - LEFT SPINDLE CLOCKWISE)

(FACE = ROUGH & FINISH)

N20 G00 X3.7 Z0.01
N21 G01 X-0.0625 F0.018
N22 G00 Z0.11
N23 X3.7
N24 Z0.0
N25 G01 X-0.0625 F0.01
N26 G00 Z0.1

(OD CANNED ROUGH)

N27 G00 X3.5
N28 G00 Z0.0615
N29 G71 U0.125 R0.03
N30 G71 P31 Q40 U0.02 W0.01 F0.018
N31 G00 X0.8903
N32 G01 X1.1817 Z-0.0842
N33 G03 X1.2 Z-0.1063 R0.0313
N34 G01 Z-1.125
N35 G01 X2.7875
N36 G03 X2.8317 Z-1.1342 R0.0313
N37 G01 X2.9817 Z-1.2092
N38 G03 X3.0 Z-1.2313 R0.0313
N39 G01 Z-2.225
N40 G01 X3.5
N41 G00 Z0.1

(TOOL CHANGE PREPARATION)

N42 G00 G28 U0.0 V0.0 (ZERO RETURN X-AXIS & Y-AXIS)
N43 G00 G28 W0.0 (ZERO RETURN Z-AXIS)
N44 G00 G28 B0.0 (ZERO RETURN B-AXIS)
N45 T01000 (CANCEL OFFSET FOR CURRENT TOOL)
N46 M139 (SHOWER BED COOLANT OFF)
N47 M127 (COOLANT THROUGH TOOL OFF)
N48 M05 P11 (LEFT SPINDLE STOP)
N49 G490 S0 (EXPLICIT B-AXIS SPINDLE ORIENTATION FOR TOOL CHANGE)
N50 G00 B-90.0 (EXPLICIT B-AXIS POSITIONING FOR TOOL CHANGE)
N51 M01

- 12 -

(PREPARATION FOR START OF OPERATION)

N52 G54 (WORK COORDINATE SELECTION)
N53 M06 T02002 (SANDVIK C6-ASHR-38130-16-A - MVJNR-164D - VNMG431)
N54 T01000 (STAGE NEXT TOOL)
N55 G490 S0 (EXPLICIT B-AXIS SPINDLE ORIENTATION FOR TOOL)
N56 G00 G28 W0.0 (ZERO RETURN Z-AXIS)
N57 G00 G28 B0.0 (ZERO RETURN B-AXIS)
N58 M126 (COOLANT THROUGH TOOL ON)
N59 M34 (LEFT SPINDLE C-AXIS MODE OFF)
N60 M262 (SPINDLE WINDING HIGH- REPLACES M42)
N61 G50 S2500 (MAXIMUM RPM CAP)
N62 G96 S600 M03 P11 (CONSTANT CUTTING SPEED MODE - 600 FPM - LEFT SPINDLE CLOCKWISE)

(OD FINISH)

N63 G00 X3.5 Z0.1
N64 X1.0408 Z0.0661
N65 G01 X0.9701 Z0.0308 F0.006
N66 X1.1908 Z-0.0796
N67 G03 X1.2 Z-0.0906 R0.0156
N68 G01 Z-1.125
N69 X2.8187
N70 G03 X2.8408 Z-1.1296 R0.0156
N71 G01 X2.9908 Z-1.2046
N72 G03 X3.0 Z-1.2156 R0.0156
N73 G01 Z-2.205
N74 X3.0707 Z-2.1697
N75 G00 X3.5 Z0.1

(END PROGRAM/TOOL CHANGE PREPARATION)

N76 G00 G28 U0.0 V0.0 (ZERO RETURN X-AXIS & Y-AXIS)
N77 G00 G28 W0.0 (ZERO RETURN Z-AXIS)
N78 G00 G28 B0.0 (ZERO RETURN B-AXIS)
N79 T02000 (CANCEL OFFSET FOR CURRENT TOOL)
N80 M139 (SHOWER BED COOLANT OFF)
N81 M127 (COOLANT THROUGH TOOL OFF)
N82 M05 P11 (LEFT SPINDLE STOP)
N83 G490 S0 (EXPLICIT SPINDLE ORIENTATION FOR TOOL CHANGE)
N84 G00 B-90.0 (EXPLICIT B-AXIS POSITIONING FOR TOOL CHANGE)
N85 M30

%

- 13 -

EXAMPLE #2 – STANDARD TURNING – LOWER UNIT ONLY

MATERIAL : AISI 4140 ALLOY STEEL - 275 HB
STOCK : 3.5 DIA ROUND BAR X 4.85 LONG
PROJECTION: 2.5 MINIMUM FROM JAW FACE
ADAPTERS : N/A
HOLDERS : MCLNR-164D (1), MVJNR-164D (1)
INSERTS : CNMG-432 (1), VNMG-431 (1)
SPINDLE : LEFT MAIN
WORK COORD: G54
ORIGIN : X0.0 = SPINDLE CENTERLINE, Z0.0 = FINISHED FACE
PROCESS : FACE, ROUGH & FINISH TURN HALF OF PART

- 14 -

%

O0002(MX-EXAMPLE #2 - LOWER)

(PREPARATION FOR START OF PROGRAM)
(INITIALIZE - RAPID, ZX PLANE, TNR COMP CANCEL, CYCLE CANCEL, UPR FEED)

N1 G00 G18 G40 G80 G99
N2 G00 G28 U0.0 (ZERO RETURN X-AXIS)
N3 G00 G28 W0.0 (ZERO RETURN Z-AXIS)

(PREPARATION FOR START OF OPERATION)

N4 G54 (WORK COORDINATE SELECTION)
N5 T01001 (MCLNR-164D - CNMG432)
N6 M138 (SHOWER BED COOLANT ON)
N7 M08 (COOLANT ON)
N8 M34 (LEFT SPINDLE C-AXIS MODE OFF)
N9 M261 (SPINDLE WINDING LOW - REPLACES M41)
N10 G50 S2500 (MAXIMUM RPM CAP)
N11 G96 S500 M03 P11 (CONSTANT CUTTING SPEED MODE - 500 FPM - LEFT SPINDLE CLOCKWISE)

(FACE = ROUGH & FINISH)

N12 G00 X3.7 Z0.01
N13 G01 X-0.0625 F0.018
N14 G00 Z0.11
N15 X3.7
N16 Z0.
N17 G01 X-0.0625 F0.01
N18 G00 Z0.1

(OD CANNED ROUGH)

N19 G00 X3.5
N20 G00 Z0.0615
N21 G71 U0.125 R0.03
N22 G71 P23 Q32 U0.02 W0.01 F0.018
N23 G00 X0.8903
N24 G01 X1.1817 Z-0.0842
N25 G03 X1.2 Z-0.1063 R0.0313
N26 G01 Z-1.125
N27 G01 X2.7875
N28 G03 X2.8317 Z-1.1342 R0.0313
N29 G01 X2.9817 Z-1.2092
N30 G03 X3.0 Z-1.2313 R0.0313
N31 G01 Z-2.225
N32 G01 X3.5
N33 G00 Z0.1

(TOOL CHANGE PREPARATION)

N34 G00 G28 U0.0 (ZERO RETURN X-AXIS)
N35 G00 G28 W0.0 (ZERO RETURN Z-AXIS)
N36 T01000 (CANCEL OFFSET FOR CURRENT TOOL)
N37 M139 (SHOWER BED COOLANT OFF)
N38 M09 (COOLANT THROUGH TOOL OFF)
N39 M05 P11 (LEFT SPINDLE STOP)
N40 M01

(PREPARATION FOR START OF OPERATION)

N41 G54 (WORK COORDINATE SELECTION)
N42 T02002 (MVJNR-164D - VNMG431)
N43 M08 (COOLANT ON)
N44 M34 (LEFT SPINDLE C-AXIS MODE OFF)
N45 M262 (SPINDLE WINDING HIGH- REPLACES M42)
N46 G50 S2500 (MAXIMUM RPM CAP)
N47 G96 S600 M03 P11 (CONSTANT CUTTING SPEED MODE - 600 FPM - LEFT SPINDLE CLOCKWISE)

- 15 -

(OD FINISH)

N48 G00 X3.5 Z0.1
N49 X1.0408 Z0.0661
N50 G01 X0.9701 Z0.0308 F0.006
N51 X1.1908 Z-0.0796
N52 G03 X1.2 Z-0.0906 R0.0156
N53 G01 Z-1.125
N54 X2.8187
N55 G03 X2.8408 Z-1.1296 R0.0156
N56 G01 X2.9908 Z-1.2046
N57 G03 X3.0 Z-1.2156 R0.0156
N58 G01 Z-2.205
N59 X3.0707 Z-2.1697
N60 G00 X3.5 Z0.1

(END PROGRAM/TOOL CHANGE PREPARATION)

N61 G00 G28 U0.0 (ZERO RETURN X-AXIS)
N62 G00 G28 W0.0 (ZERO RETURN Z-AXIS)
N63 T02000 (CANCEL OFFSET FOR CURRENT TOOL)
N64 M139 (SHOWER BED COOLANT OFF)
N65 M09 (COOLANT THROUGH TOOL OFF)
N66 M05 P11 (LEFT SPINDLE STOP)
N67 T12000 (INDEX TO EMPTY TOOL FOR LOWER TURRET CHUCK CLEARANCE)
N68 G00 G54 Z0.0 (POSITION LOWER TURRET FOR WORKING ENVELOPE CLEARANCE)
N69 M30

%

- 16 -

PINCH TURNING – SYNCHRONIZED UPPER & LOWER

Pinch Turning

is a way to employ 2 independent and opposing tools on a CNC lathe in order to cut
more quickly. When Pinch Turning, one tool follows 180° of spindle rotation behind the other.
Each opposing tool is only engaged in the cut for 180° of spindle rotation.
The Doosan Puma MX Series T & ST configurations fully support Pinch Turning.

The feed rate that is calculated for each tool is doubled.
The tools cut at the same time but are 180° out of phase so that the amount of time needed for the
Pinch Turned Operation is 50% less than a standard turning operation.

The tools used in Pinch Turning must be identical in configuration.
The opposing tools should both share the same orientation (Right or Left Handed), clearance and
relief angles, and most importantly, the inserts used must be identical.

Pinch Turning is also referred to as Balanced Turning.
It can be used for either roughing or finishing.
With Pinch Turning, both the opposing tools use the same programmed path.
However, each program is independent and is a separate control system.

These different control systems are typical classified as Upper & Lower and are synchronized during
automatic operation. This synchronization is achieved by the use of Wait Codes (M900-M999) that
are placed strategically within the NC code. A Wait Code is included on a line of NC Code where we
wish to begin the synchronization. The same wait code is placed at the corresponding point in the NC
Code for the opposing tool. When the Upper and Lower Control Systems reach the same point, both
Upper and Lower Tools will begin their motion at the same time.
If either Control System reaches a Wait Code before the other Control System, that Control System
will wait for the other system to “catch up” before beginning synchronized operations.

- 17 -

EXAMPLE #3 – STANDARD TURNING – SYNCHRONIZED UPPER & LOWER

MATERIAL : AISI 4140 ALLOY STEEL - 275 HB
STOCK : 3.5 DIA ROUND BAR X 4.85 LONG
PROJECTION: 2.5 MINIMUM FROM JAW FACE
ADAPTERS : SANDVIK C6-ASHR-38130-16-A (2)
HOLDERS : MCLNR-164D (2), MVJNR-164D (2)
INSERTS : CNMG-432 (2), VNMG-431 (2)
SPINDLE : LEFT MAIN
WORK COORD: G54
ORIGIN : X0.0 = SPINDLE CENTERLINE, Z0.0 = FINISHED FACE
PROCESS : FACE WITH UPPER, PINCH TURN ROUGH & FINISH TURN HALF OF PART

- 18 -

%

O0003(MX-EXAMPLE #3 - UPPER)

(PINCH TURN SYNCHRONIZED WITH LOWER TURRET)

N1 G00 G18 G40 G49 G80 G99
N2 G00 G28 U0.0 V0.0
N3 G00 G28 W0.0
N4 G00 G28 B0.0
N5 G490 S0
N6 G00 B-90.0
N7 M01
N8 G54

N9 M06 T01001
N10 T02000
N11 G490 S0
N12 G00 G28 W0.0
N13 G00 G28 B0.0
N14 M138
N15 M126
N16 M34
N17 M261
N18 G50 S2500
N19 G96 S500 M03 P11

(FACE = ROUGH & FINISH)

N20 G00 X3.7 Z0.01
N21 G01 X-0.0625 F0.018
N22 G00 Z0.11
N23 X3.7
N24 Z0.
N25 G01 X-0.0625 F0.01

(OD CANNED ROUGH)

N28 G00 Z0.0615
N29 G71 U0.125 R0.03
N30 G71 P31 Q40 U0.02 W0.01 F0.036
N31 G00 X0.8903
N32 G01 X1.1817 Z-0.0842
N33 G03 X1.2 Z-0.1063 R0.0313
N34 G01 Z-1.125
N35 G01 X2.7875
N36 G03 X2.8317 Z-1.1342 R0.0313
N37 G01 X2.9817 Z-1.2092
N38 G03 X3.0 Z-1.2313 R0.0313
N39 G01 Z-2.225
N40 G01 X3.5
N41 G00 Z0.1

N42 G00 G28 U0.0 V0.0
N43 G00 G28 W0.0
N44 G00 G28 B0.0
N45 T01000
N46 M139
N47 M127
N48 M05 P11
N49 G490 S0
N50 G00 B-90.0
N51 M01

%

O0003(MX-EXAMPLE #3 - LOWER)

(PINCH TURN SYNCHRONIZED WITH B-AXIS HEAD)

N1 G00 G18 G40 G80 G99
N2 G00 G28 U0.0
N3 G00 G28 W0.0

N4 G54
N5 T01001
N6 M138
N7 M08
N8 M34
N9 M261
N10 G50 S2500
N11 G96 S500 M03 P11

(OD CANNED ROUGH)

N13 G00 Z0.0615
N14 G71 U0.125 R0.03
N15 G71 P16 Q25 U0.02 W0.01 F0.036
N16 G00 X0.8903
N17 G01 X1.1817 Z-0.0842
N18 G03 X1.2 Z-0.1063 R0.0313
N19 G01 Z-1.125
N20 G01 X2.7875
N21 G03 X2.8317 Z-1.1342 R0.0313
N22 G01 X2.9817 Z-1.2092
N23 G03 X3.0 Z-1.2313 R0.0313
N24 G01 Z-2.225
N25 G01 X3.5
N26 G00 Z0.1

N27 G00 G28 U0.0
N28 G00 G28 W0.0
N29 T01000
N30 M139
N31 M09
N32 M05 P11
N33 M01

N26 G00 Z0.1

N27 G00 X3.5 M900 (SYNC POINT)

N12 G00 X3.5

00 (SYNC POINT)

Z0.1 M9

- 19 -

N52 G54
N53 M06 T02002
N54 T01000
N55 G490 S0
N56 G00 G28 W0.0
N57 G00 G28 B0.0
N58 M126
N59 M34
N60 M262
N61 G50 S2500
N62 G96 S600 M03 P11

(OD FINISH)

N63 G00 X3.5 Z0.1 M901 (SYNC POINT)
N64 X1.0408 Z0.0661
N65 G01 X0.9701 Z0.0308 F0.012
N66 X1.1908 Z-0.0796
N67 G03 X1.2 Z-0.0906 R0.0156
N68 G01 Z-1.125
N69 X2.8187
N70 G03 X2.8408 Z-1.1296 R0.0156
N71 G01 X2.9908 Z-1.2046
N72 G03 X3.0 Z-1.2156 R0.0156
N73 G01 Z-2.205
N74 X3.0707 Z-2.1697
N75 G00 X3.5 Z0.1

N76 G00 G28 U0.0 V0.0
N77 G00 G28 W0.0
N78 G00 G28 B0.0
N79 T02000
N80 M139
N81 M127
N82 M05 P11
N83 G490 S0
N84 G00 B-90.0
N85 M30

%

N34 G54
N35 T02002
N36 M08
N37 M34
N38 M262
N39 G50 S2500
N40 G96 S600 M03 P11

(OD FINISH)

N41 G00 X3.5 Z0.1 M901 (SYNC POINT)
N42 X1.0408 Z0.0661
N43 G01 X0.9701 Z0.0308 F0.012
N44 X1.1908 Z-0.0796
N45 G03 X1.2 Z-0.0906 R0.0156
N46 G01 Z-1.125
N47 X2.8187
N48 G03 X2.8408 Z-1.1296 R0.0156
N49 G01 X2.9908 Z-1.2046
N50 G03 X3.0 Z-1.2156 R0.0156
N51 G01 Z-2.205
N52 X3.0707 Z-2.1697
N53 G00 X3.5 Z0.1

N54 G00 G28 U0.0
N55 G00 G28 W0.0
N56 T02000
N57 M139
N58 M09
N59 M05 P11
N60 T12000
N61 G00 G54 Z0.0
N62 M30

%

- 20 -

EXAMPLE #4 – STANDARD TURNING

SIMULTANEOUS UPPER & LOWER OPERATION
USING LEFT & RIGHT SPINDLES WITH PART TRANSFER

MATERIAL : AISI 4140 ALLOY STEEL - 275 HB
STOCK : 3.5 DIA ROUND BAR X 4.85 LONG
PROJECTION: 2.5 MINIMUM FROM JAW FACE
ADAPTERS : SANDVIK C6-ASHR-38130-16-A (2)
HOLDERS : MCLNR-164D (2), MVJNR-164D (2)
INSERTS : CNMG-432 (2), VNMG-431 (2)
SPINDLES : LEFT MAIN W/UPPER, RIGHT MAIN W/LOWER
WORK COORD: G54=LEFT MAIN W/UPPER, G55=RIGHT MAIN W/LOWER
ORIGIN : X0.0 = SPINDLE CENTERLINE, Z0.0 = FINISHED FACE
PROCESS : FACE, ROUGH & FINISH TURN 1ST HALF OF PART – LEFT MAIN w/UPPER

: FACE, ROUGH & FINISH TURN 2ND HALF OF PART – RIGHT MAIN w/LOWER
: STOP, REMOVE FINISHED PART FROM RIGHT SPINDLE
: TRANSFER PART FROM LEFT SPINDLE TO RIGHT SPINDLE
: LOAD NEW STOCK AND CONTINUE SIMULTANEOUS OPERATION