Multi-purposed Large sized Bridge Type Machining Center

02

In accordance with enhanced acceleration/deceleration characteristics due

to a rigid machine structure, and high speed machining capabilities,

the BM series provides unrivalled productivity for the production of plate

materials and large parts for general industries.

03

Features

1

Built-in spindle offering high speed and precision ensures optimal productivity and precision in parts machining.

Spindle with high capability and high power effective for high-speed machining and powerful cutting

Stable structure guaranteed by the application of a high-rigidity roller LM full axis and ball screw nut cooling standard.

3 Optimal stabilized structure

Roller LM guide

Guaranteed highest capabilities

The world-leading capability and specifications deliver excellent machining capabilities.

2

2740 mm (107.9 inch)Workpiece passing width largest in equivalent models

Multi-purposed Large sized Bridge Type Machining Center

Large parts for general industries Large vehicle parts

BM 2740 (BT 50) BM 2740P (BT 40)

Large plate material (LCD)

BM 2740 series

Powerful, high torque spindles have been applied to ensure the highest productivity in the entire process

from rough machining to fine machining.

Spindle with a highest speed of 12,000 rpm is optimal for machining large-size

plate materials.

04

BM 2740 series

A Belt or gear excluded built-in motor is equipped for the main shaft, which minimizes vibration and noise during high speed rotation. Moreover, with an optimum combination of precision bearings effective for heat generation control at high speeds with 4-lane, it carries out high quality processing while maintaining a balance of precision for the main axis of which the vibration source is removed. In accordance with maintaining the strength of main shaft with minimizing rotating inertia, it allows great reduction of the time for reaching to the maximum speed of the main shaft, which leads to high productivity.

The spindle taper and nose are finish-ground together to allow simultaneous face and taper location of tooling.

- Simultaneous contact of tools to main shaft section and taper

Enhancing the strength and reducing vibration- Enhancement of processing capability and surface resolution in

severe conditions- Possible to utilize conventional tools (100% compatible)

Built-in Main Spindle

Spindle power- torque diagram

Selection of dual contact connecting spindleTaper contact

Flange contact

Major advantages• Strength enhancement with increment

of standard diameter• Dramatic enhancement of ATC cyclic

precision degree• Prevention of Z-axis displacement at

high speed rotation• Increased durability of tools

Max. spindle speed

10000 r/min

12000 r/min

Spindle motor

25/30 kW(33.5/40.2 Hp)

18.5/22 kW (24.8 / 29.5 Hp)

BM 2740

BM 2740P

BM 2740P

000210053008200215680

15 (11.1)

50 (36.9)60 (44.3)

119 (87.8)

147 (108.5)

204 (150.6) S3 25%

S3 25% S2 15min

S1 Cont.

S1 Cont.

S2 15min

22 (29.5)

18.5 (24.8)

15 (20.1)

Rotational Speed (r/min)

Torque : N·m(ft·lb) Power : kW(Hp)BM 2740

500 (369.0)

400 (295.2)420 (310.0)

300 (221.4)

349.9 (258.2)

200 (147.6)

238.1 (175.7)

100 (73.8)

0

Spindle speed (r/min)

Torque : N·m(ft·lb) Power : kW(Hp)35 (46.9)

30 (40.2)

25 (33.5)

20 (26.8)

15 (20.1)

10 (13.4)

5 (6.7)

00 1000 2000 4500 8500600 10000 500

22

15

104.9

71.5

24

20

114.7

95.1

28.6 23.9

2500

30 MinutesContinuousS3 25%

High Performance SpindleThe heavy duty spindle assembly and face/taper contact spindle nose reduces vibration and improves workpiece surface finish during high speed machining.

05

Tool changing takes place using a highly efficient and reliable CAM type tool change mechanism for high speed and long term reliability.

Rapid Traverse

Tool Magazine

Strong traverse system structure

Roller guide applied Rigid coupling

Ball screw nut coolingThe accuracy of the axis traverse is improved by applying a cooling jacket to the ballscrews which has the effect of reducing thermal transfer.

BM 2740 BM 2740P

Tool storage capacity 40 ea (60 ea ) 30 ea (40 ea )

Tool change time (T-T-T) 1.5 s 1.5 s

Rapid traverse speed

BM 2740 BM 2740P

X-axis 16 m/min (629.9 ipm) 16 m/min (629.9 ipm)

Y-axis 24 m/min (944.9 ipm) 24 m/min (944.9 ipm)

Z-axis 24 m/min (944.9 ipm) 36 m/min (1417.3 ipm)

BM 2740P

06

Machining CapacityBM series provides high processing performance in various cutting procedures.

Carbon steel (SM45C)

Machining rate

784 cm3/min(308.7 in3/min)

Spindle speed 500 r/min

Feedrate 980 mm/min(38.6 ipm)

Face mill• ø125mm Face mill (8Z)

BM 2740

8.0 mm8.0 mm100 mm100 mm(0.3 inch)

(3.9 inch)

Machining rate

960 cm3/min(378.0 in3/min)

Spindle speed 500 r/min

Feedrate 1200 mm/min(47.2 ipm)

Face mill Gray casting(GC25)

• ø80mm Face mill (6Z)

Tap Carbon steel (SM45C)

3.0 mm3.0 mm64 mm64 mm(0.1 inch)

(2.5 inch)

Machining rate

768 cm3/min (302.4 in3/min)

Spindle speed 1200 r/min

Feedrate 4000 mm/min(157.5 ipm)

Face mill Carbon steel (SM45C)

• ø80mm Face mill (6Z)

BM 2740P

6.0 mm6.0 mm64 mm64 mm(0.2 inch)

(2.5 inch)

Machining rate

2688 cm3/min(1058.3 in3/min)

Spindle speed 1200 r/min

Feedrate 7000 mm/min(275.6 ipm)

• ø80mm Face mill (6Z)

Face mill Aluminum (AL6061)

Machining rate M3 x P0.5Spindle speed 3600 r/min

Feedrate 1800 mm/min(70.9 ipm)

Machining rate M42 x P4.5Spindle speed 180 r/min

Feedrate 810 mm/min(31.9 ipm)

Tap Aluminum (AL6061)

• Since data above is collected in accordance with test standards of our company, it is changeable along with the conditions.

Attainment of High Precision

Surface roughness

· Spindle speed : 12000 r/min

· Feedrate : 1200 mm/min

· Machine : BM2740P

Ra 0.15 μm

8.0 mm8.0 mm(0.3 inch)

(3.9 inch)100 mm100 mm

07

Specification and Performance Optimized for LCD/LED Consumer MarketThis product has been exclusively designed for the production of LCD/LED components and parts made from flat Aluminium sheet, such as Aerospace components. The investment cost has been reduced by using energy-saving and environmental-friendly elements during the product’s development.

Passage Width & Height

The distance from the table surface to the spindle nose has been minimised toallow for shortest possible tools and provide optimum rigidity.

2740 mm (107.9 inch) B

A

Model A BBM 2740 580 mm (22.8 inch) 950 mm (37.4 inch)

BM 2740P 80 mm (3.1 inch) 580 mm (22.8 inch)

Model Distance between columns Table size Loading capacity

BM 2740 2740 mm(107.9 inch)

4000 X 2500 mm(157.5 x 98.4 inch)

10000 kg (22045.9 lb)

BM 2740P 3000 kg (6613.8 lb)

The widest distance between columns & table size in its class

Selection of High Column (Raising Block) specificationOptional high column specification (using raising blocks) can accommodate increased workpiece height.

Model A B C D

BM 2740 150 mm(5.9 inch)

950 mm(37.4 inch)

300/450 mm(11.8/17.7 inch)

1100/1250 mm(43.3/49.2 inch)

BM 2740P 80 mm(3.1 inch)

580 mm(22.8 inch)

230/380 mm(9.1/15.0 inch)

730/880 mm(28.7/34.6 inch)

BA

DC

Standard Optional [150 / 300 mm (5.9 / 11.8 inch) Raising]

08

Major features of machine structure

The BM series has been designed from the beginning using Finite Element Method (FEM), from single elements such as bed, column etc through to the complete assembled structure.This ensures minimum vibration levels during machining the workpiece.

Crossrail structure

The crossrail is designed with an arch-type structure to reducegeometric errors caused by bend and twist of the cross beam.High accuracy of machining is achieved over long periods.

BM 2740 series

Bed and table structure

The table traverses along three roller guideways and minimises table overhang at both ends. This guarantees the same accuracyand performance across the entire table surface area.

BM 2740P

Special Features of the Machine StructureBased on a very strong structure, it is possible for high speed processing for a long period and actualization of processing precision degree without change in the heavy cutting.

09

Column structure

The column has been designed using structural analysis and has an extra-wide base to optimise stability and reduce column bending during long periods of running.

Column bed connection structure

The column and bed are connected in two planessideand upper face - to provide high level rigidity and accuracy.

Connection structure ofcolumn and bed rear face

Saddle and spindle structureHigh strength Z-axis propping structureIn order to minimise displacement of the spindle and to maximise rigidity, the Z axis assembly is supported by a 3 lane LM guide block structure.

Low spindle overhang distanceThe rigidity of the Z axis is optimised by reducing the distance from the Z axis to the spindle centre of gravity.This allows high acceleration / deceleration rates to be used when drilling and tapping small diameter holes.

B

A

A : 280 mm (11.0 inch) (BM2740)

B : 270 mm (10.6 inch) (BM2740P)

B

A

BM 2740

870 mm

(34.2 inch)

1070 mm (42.1 inch)

BM 2740P

670 mm

(26.3 inch)

1070 mm (42.1 inch)

10

Coolant Gun

The coolant gun allows the operator to quickly clean the working area of the machine and the workpiece

MPG

The MPG makes set up easier for large size workpieces

MPGPosition DisplayMPG (LCD)

Chip Disposal

Operation

The machine includes two screw-type conveyors ot remove chips from the working area intoa lift up chip conveyor positioned at the end of the machine.

Many features are included which makes the machine operation easier for the operator.

Cutting oil device Internal screw conveyer

2-lane screw is adopted.

Scraper type

Drum filter type

Hinge type

Full splash guard in consideration of workplace environment

Full splash guard

Chip conveyor

Indoor lamp (LED)

Cross lower working lamp

Indoor operation foothold

Provision of table front face and left/right indoor foothold

Convenient absolute positioning systemMachine operation is possible without the need to reference return to machine origin when powering on. The machine location is saved by battery backup while in power off condition.

Signal tower

Alarm lamp (indicating abnormal condition of machine)

Processing completion light (Indicating completion of processing)

Processing ongoing light (Indicating ongoing process)

Semi splash guard

Coolant Chiller

Coolant tank

Coolant ChillerThe coolant chiller lowers coolant temperature, helping to cool both the workpiece and tool during the machining operation. When using insoluble cutting oils, a coolant chiller is recommended to cool heated oil and preserve machining precision.

11

Tool Date Registry Table

ATC Recovery Help

Sensor Status Monitor

M-code Help

Table Moving for Setup

G-code Help

Easy Operation Package

Power Saving

These Doosan software packages have been customised to make setup and diagnostic operations easier for the customer.

Tool Load Monitor

A Hot key is separated for display andconveyance of machine, and single buttoninput in jog mode allows conveyance of thewhole shaft to a designated location withcalling tool replacement and arbitrarycommand tools and conveyance to thedesignated location for the structure settingand manual tool length setting.

Power saving functionThis function saves electricity when the

machine is not in use.

Automatic machine light turns offThe operating lamp is automatically

turned off.

Automatic machine sleep

The axis shaft servo AMP power and

PSM power are shutdown.

▶ Chip conveyer motor operation is

stopped.

Operating conditionIn case of no spindle rotation and shaft

conveyance in the condition of

no switch input in control panel, a

function herein is operated.

▶ There is an input button for using the

power saving function.

12

10825(426.2)

4013(158.0) (60 TOOL)

2740(107.9) (40 TOOL)2954 (116.3)

5600(220.5)

5031(198.1) 4238(166.9)1132(44.6)487(19.2)

2432(95.7) 2369(93.3)

618

(24.

3)(2

7.9)

(22.

1)(2

0.7)

669(

26.3

)17

50(6

8.9)

4810

(189

.4)

1936

(76.

2)45

5(17

.9)

2970

(116

.9)

5531

(217

.8)

1070

(42.

1)(2

0.6)

(100

.4)

523

2550 41

42(1

63.1

)

562

525

149

(5.9

)70

9

1095(43.1) 2996(118.0)4914(193.5)

525(20.7) (70.0) (32.9) (69.9)

1777 1776836613425

(16.7) (24.1)

958(

37.7

)37

00(1

45.7

) 87

3(34

.4)

External Dimensions

Top View Front View

Side View

250

4000(157.5)

24H8(0.9)

16.6

22.6 22.6

16.1

TAPER GAGE LINE

7/24 TAPER

M16×P2.0

M16×P2.0

10

Ø63

Ø53

Ø23 Ø19

Ø14

Ø17

Ø17

Ø7

HO

LE

Ø44

.45

60˚15˚

30˚L

2

65.4

25 29

23 24

42(1.7)

42 (1.7

)

18 (0.7

)

250125(4.9) (4.9)(9.8) (9.8)

2500

(98.

4)

125

Table

BM 2740

Tool ShankBT50

23.2

7/24

M24 x 3 15

60˚45

13

35.4

40

8

8545

M24x3

MAS403 P50T - I (45˚)

35

30

5

30˚

45˚

5

58 9

35.4

25.7

L

LD35≤10049>100

101.83

ø100

ø25

60˚

ø38

ø23

ø17

ø85

øD

ø69.

85

GAGE LINE

TAPER

TAP

THREAD

Unit : mm (inch)

13

Top View Front View

250

4000(157.5)

24H8(0.9)

16.6

22.6 22.6

16.1

TAPER GAGE LINE

7/24 TAPER

M16×P2.0

M16×P2.0

10

Ø63

Ø53

Ø23 Ø19

Ø14

Ø17

Ø17

Ø7

HO

LE

Ø44

.45

60˚15˚

30˚L

2

65.4

25 29

23 24

42(1.7)

42 (1.7

)

18 (0.7

)

250125(4.9) (4.9)(9.8) (9.8)

2500

(98.

4)

125

Table

BM 2740P

Tool ShankBT40 MAS 403 BT 40

• Pull Stud 15° Replacing the standard required by PS BT40 M16 JIS B or PS - 806 (NIKKEN)

415(16.3)

830

(32.

7)(1

33.9

)(1

6.5)

3400

418

453

1155

2103

(82.

8)

3760

(148

.0)

174

1978

(77.

9)(6

.9)

(45.

5)(1

7.8)

10400(409.4)

4250(167.3)

415(16.3) (197.2) (111.4) (100.8)

5010 2830 2560

718

(28.

3)29

70(1

16.9

)41

4(16

.3)(10

.4)(11

.8)30

053

0(2

0.9)

4648

(183

.0)

2738

(107

.5)

571

(22.

5)

530(20.9) (68.0) (32.9) (70.3)(11.8)

300 1727

5178(203.9)

10815(425.8)5158 966 4276415

(16.3) (203.1) (38.0) (168.3)

836 1785

3308

(130

.2)

246

369 670 1099 658 2997173(6.8) (43.3) (25.9) (118.0)(14.5)(26.4)(7.3)

185

Side View

Unit : mm (inch)

14

Machine Specifications

Description Unit BM 2740 BM 2740P

Travels

Travel distance

X-axis mm (inch) 4000 (157.5) 4000 (157.5)

Y-axis mm (inch) 2700 (106.3) 2700 (106.3)

Z-axis mm (inch) 800 (31.5) 500 (19.7)

Effective width between columns mm (inch) 2740 (107.9) 2740 (107.9)

Table to spindle nose mm (inch) 150~950 (5.9~37.4) 80~580 (3.1~22.8)

FeedratesRapid Traverse Rate

X-axis m/min (ipm) 16 (629.9) 16 (629.9)

Y-axis m/min (ipm) 24 (944.9) 24 (944.9)

Z-axis m/min (ipm) 24 (944.9) 36 (1417.3)

Cutting feedrate m/min (ipm) 8000 (315.0) 8000 (315.0)

TableTable size mm (inch) 4000 × 2500 (157.5 × 98.4) 4000 × 2500 (157.5 × 98.4)

Table loading capacity kg (lb) 10000 (22045.9) 3000 (6613.8)

Spindle

Tool shank - BT50 BT40

Ram size mm (inch) 380 × 380 (15.0 × 15.0) -

Max. Spindle speed r/min 10000 12000

ATC

Tool storage capa. ea 40 {60} 30 {40}

Max. tool diameter mm (inch) 125 / 220 (4.9 / 8.7) 85 / 125 (3.3 / 4.9)

Max. tool length mm (inch) 350 (13.8) 300 (11.8)

Max. tool weight kg (lb) 15 (33.1) 8 (17.6)

Tool selection memory random memory random

Motors Spindle motor power kW (Hp) 25 / 30 (33.5 / 40.2) 18.5 / 22 (24.8 / 29.5)

Power source

Electric power supply(rated capacity)

kVA 56 56

Tank capacity

Coolant tank capacity L (galon) 660 (174.4) 660 (174.4)

Lubrication tank capacity L (galon) 4.3 (1.1) 4.3 (1.1)

Machine Dimensions

Height mm (inch) 4810 (189.4) 3760 (148.0)

Length mm (inch) 4914 (193.5) 4648 (183.0)

Width mm (inch) 10815 (425.8) 10815 (425.8)

weight kg (lb) 45000 (99206.6) 38000 (83774.4)

{ } : option

•Spindle head cooling system

•Coolant gun

•Flood coolant

•Air curtain

•Ball screw nut cooling system

•Coolant tank & Chip pan

•Potable MPG

•Semi splash guard

•Easy operation package

- Renishaw GUI (Screen only)

- Tool management system

- Pattern cycle & Operation rate

• DTMM

(Tool Load Mointoring System)

• DAFT (Apative Feed Control)

•Working step (BM 2740)

Standard Feature•Air gun

•Auto. workpiece measurement

•Spindle thermal compensation

•Full splash guard

•Linear scale

•Lift up chip conveyor & bucket

•MPG (LCD type)

•Side anchoring

•DHC (Doosan Heat Control)

•Auto tool breakage detection

•Air blower

•Coolant chiller

•Working step (BM 2740P)

Optional Feature

• The specifications and information above-mentioned may be changed without prior notice.• For more details, please contact Doosan

15

NC Unit Specifications

AXES CONTROL- Controlled axes 3 (X, Y, Z)- Simultaneous controlled axes

Positioning(G00)/Linear interpolation (G01) : 3 axesCircular interpolation (G02, G03) : 2 axes

- Backlash compensation- Least command increment 0.001mm / 0.0001(inch)- Least input increment 0.001mm / 0.0001(inch)- Machine lock all axes / Z axis- Mirror image Reverse axis movement

(setting screen and M - function)- Stored pitch error compensation

Pitch error offset compensation for each axis- Stored stroke check 1 Overtravel controlled by software

SPINDLE & M-CODE FUNCTION- M- code function M 3 digits- Spindle orientation- Spindle speed command S5 digits- Spindle speed override (10% increments) 10 - 150%- Rigid tapping G84, G74

TOOL FUNCTION- Tool nose radius compensation G40, G41, G42- Number of tool offsets 64 ea- Tool length compensation G43, G44, G49sation- Tool number command T2digits- Tool life management Geometry / Wear and Length / Radius offset- Tool offset memory C memory- Tool length measurement

INTERPOLATION & FEED FUNCTION- 2nd reference point return G30- Circular interpolation G02, G03- Exact stop check G09, G61(mode)- Feed per minute mm / min- Feedrate override (10% increments) 0 - 200%- Jog override (10% increments) 0 - 200%- Manual handle feed (1 unit)- Manual handle feedrate 0.1/0.01/0.001mm- Override cancel M48 / M49- Rapid traverse override F0 (fine feed), 25 / 50 / 100 %- Reference point return G27, G28, G29- Skip function G31- Helical interpolation- AICC I 30 block preview- Machine condition selection function- Thread cutting, synchronous cutting- Program restart- Automatic corner deceleration- Feedrate clamp by circular radius- Linear ACC/DEC before interpolation (Specify AI Contour control I)- Control axis detach- Rapid traverse bell-shaped acceleration/deceleration- Smooth backlash compensation

OTHERS FUNCTIONS (Operation, Setting & Display, etc)- Alarm display- Alarm history display- Dry run- Ethernet function- Graphic display Tool path drawing- Help function- Memory card interface- MDI / DISPLAY unit 10.4" color LCD, Keyboard for data input, soft-keys- Operation functions Tape / Memory / MDI / Manual- Operation history display- Program restart- Run hour and part number display- Search function Sequence NO. / Program NO.- Self - diagnostic function- Single block- Multi language display

OPTIONAL SPECIFICATIONS- 3D coordinate conversion- 3D tool compensation- Addition of tool pairs for tool life management 1024pairs- AICC II 80 block preview- Data server with1GB PCMCIA card- Automatic corner override G62- Additional work coordinate system G54.1 P1 - 300 (300 pairs)- Dynamic graphic display Machining profile drawing=> When the EZ Guide i is used, the Dynamic graphic display cannot application- Exponential interpolation- Interpolation type pitch error compensation- EZ Guide i (Doosan infracore Conversational Programming Solution) with 10.4" Color TFT=> When the EZ Guide i is used, the Dynamic graphic display cannot application- High speed skip function- Involute interpolation G02.2, G03.2- No. of Registered programs 1000 ea- Number of tool offsets 99 / 200 / 400 ea- Optional block skip addition 9 blocks- Part program storage 512K / 1M/ 2M byte- Polar coordinate command G15 / G16- Polar coordinate interpolation G12.1 / G13.1- Programmable mirror image G50.1 / G51.1- Single direction positioning G60- Tool load monitoring function(doosan)- Tool position offset G45 - G48

PROGRAMMING & EDITING FUNCTION- Absolute / Incremental programming G90 / G91- Auto. Coordinate system setting- Background editing- Canned cycle G73, G74, G76, G80 - G89, G99- Circular interpolation by radius programming- Custom macro B- Inch / metric conversion G20 / G21- Label skip- Local / Machine coordinate system G52 / G53- No. of Registered programs 500 ea- Optional stop M01- Part program storage 640m (2,100ft)[256k]byte- Program number O4-digits- Sub program Up to 4 nesting- Tape code ISO / EIA Automatic discrimination- Work coordinate system G54 - G59- Additional work coordinate system (48 Pair) G54.1 P1 - 48 pairs- Coordinate system rotation G68, G69- Optional angle chamfering / corner R- Macro executor

Fanuc 32i

Head OfficeDoosan Tower 20th FL., 18-12, Euljiro-6Ga, Jung-Gu, Seoul, Korea 100-730 Tel : ++82-2-3398-8693 / 8671 / 8680 Fax : ++82-2-3398-8699

Doosan Infracore America Corp.19A Chapin Rd. Pine Brook, NJ 07058, U.S.A. Tel : ++1-973-618-2500 Fax : ++1-973-618-2501

Doosan Infracore Germany GmbHEmdener Strasse 24 D-41540 Dormagen Germany Tel : ++49-2133-5067-100 Fax : ++49-2133-5067-001

Doosan Infracore Yantai Co., LTD13 Building, 140 Tianlin Road, Xuhui District, Shanghai, China (200233) Tel : ++86-21-6440-3384 (808, 805) Fax : ++86-21-6440-3389

- The specifications and information above-mentioned may be changed without prior notice.- For more details, please contact Doosan.

EN 140829SU

http://www.doosaninfracore.com/machinetools/