BNAHigh Perfomance CNC Turning Center

Miyano Innovation Line

BNA-42GTY

BNA- 42GTYConfigured with two spindles, one turret, 2 x Y axes, gang tools and X3 axis to back spindle, the BNA-42GTY can mount up to 45 tools.

• 3 tool simultaneous cutting • high productivity with fast cycle times• renowned Miyano accuracy • versatile tool layout2

3

4

Designed for accuracy and long tool life

Substantial Reduction in Non-cutting Time

Spindle Motors with Increased Output Easy to Use Tooling System

High-rigidity hand scraped sl ideways are used on all axes. T h e s e s l i d e w a y s w i t h f a c e c o n t a c t s have exceptional rigidity and damping c h a r a c t e r i s t i c s , e n a b l e p o w e r f u l cutt ing, and help to prolong cutt ing tool life. The bed where major machine units such as spindles and tool sl ides a r e m o u n t e d h a s a p l a t f o r m - l i k e surface table structure. T h e u n i t m o u n t i n g f a c e s a r e n o t distorted by the effects of heat , and even if the units are subject to thermal expansion they are all displaced in the same direction (perpendicular to their mounting faces) , minimizing relat ive d e v i a t i o n s b e t w e e n t h e w o r k p i e c e and cutting tools.

The unique control system cuts non-cutting time by 27% (compared to earlier equivalent Miyano products).The result is a 13% reduction in cycle time.

The spindle 1 motor has the highest output in the BNA series. This enables powerful cutting.

T h e t u r r e t h a s 8 s t a t i o n s , b u t t h e h a l f - i n d e x i n g mechanism makes it possible to mount tools at up to 16 positions. The use of optional multiple tool holders can further increase the number of tool positions.

100

0.1 10

50

100

200

0.5

1.0

5.0

10.0

500 1000 5000

Spindle speed（min-1）

Output（kW）

1500 2000 4500 7632

1179 1572 3537 6000

Torque（Nm）

89.1 Nm(15min)

45.6 Nm(cont.)

11 kW(15min)

7.5 kW(cont.)

89.1 Nm(15min)

45.6 Nm(cont.)

11 kW(15min)

Motor pulley diameter: φ125mmSpeed-reduction rate: 0.786Spindle pulley diameter:φ159mm

Motor(min-1)

Spindle(min-1)

7.5 kW(cont.)

Cutting time Non-cutting time

Conventional machine

BNA

147sec.

127.5sec.

75.5sec. 71.5sec.

27% reduction (non-cutting time)

13% reduction (total cycle time)

75.5sec. 52sec.

Workpiece

X1

Z1

Y1Y1

X2

Z2

HD1SP1

SP2

Z3

X3

Y2

5

Cycle time shortened by superimposition controlSuperimposition control allows simultaneous cutting with two tools at the main spindle (SP1), or with three tools when the sub spindle (SP2) is included, shortening cycle times.

Examples

■ Independent simultaneous machining of front/ back faces

Simultaneous machining with 2 tools Simultaneous machining with 3 tools

■ Superimposition simultaneous machining 　 of front/ back faces

■ Simultaneous machining of 　 front/ back faces

■ Superimposition simultaneous machining 　 of front/ front/ back faces

TurningM

illing

Superimposition SuperimpositionSuperimposition

Superimposition Superimposition Superimposition

Superimposition

Superimposition

Superimposition

6

Support screens improve operating convenience

External view

T h e p r o g r a m s c r e e n , o r g a n i z e d f o r e a s y r e a d i n g , c a n b e displayed in synchronization with the editing screen. This simplifies the editing of complex programs with a lot of queuing.

A l l y o u h a v e t o d o i s i n p u t t h e m a c h i n i n g l e n g t h , c h u c k i n g l e n g t h a n d s o o n , a n d t h e e s c a p e a n d a p p r o a c h p o s i t i o n s a r e automatically calculated. This is useful for collision prevention and shortening setup times.

HMI (Human Machine Interface) is adoptedG r a p h i c s d i s p l a y e d f o r e a c h i t e m a n d s c r e e n s t h a t d i s p l a y a l l t h e n e c e s s a r y i n f o r m a t i o n i n o n e p l a c e g r e a t l y i m p r o v e o p e r a t i n g convenience.

The coordinate calculation function and calculator function incorporated in the NC unit can be used for complex intersection point calculations.

P r o g r a m s f o r c a n n e d c y c l e s e t c . c a n b e c r e a t e d i n t h e conversational style.

The function displays the list of G and M codes including explanations of the arguments to support programming.

1120

1658

530648

1508

2350 460

2810

58

182

7

Tooling system

Tooling area

31 55

166

238

21.649

390

227

140 Z1-st.110

Z3-st.360

X3-

st.1

9012

14.152.9

Z2-st.235

85 37

85

103.5 44 52.5

37

Y1-

st.2

60

25

5050

5050

50

X1-st.95

45

4040

17.5

17.5

20

20 20

8方 H200X2-st.14044

3535

40

4040

(139.681)

128

(166

.035

)

(209

.426

)

(252

.817

)

(144.525)

(149.37)

- +

Y2-

st.7

0

20

3 110

8

5

110

95

19

115

Ø11

8

3

3.9

Ø10

0.4

3 110

3

Ø42

Φ25

30°

�405

78

20

Φ11

8

55

Reference point

- +Reference point

- +Reference point

-+ R

efer

ence

poi

nt

-+ R

efer

ence

poi

nt

- +Reference point - +Reference point

-+

Ref

eren

ce p

oint

Triple sleeve holderφ25　

Double sleeve holderφ25　8 Station turret

Pull out finger

Drill bush　20Drill holder

Round hole bush

Collet holder

Tapping colletCollet holder

Center drill

Straight drill

Boring tool

Double turning holder□20

Turning holder S□20　

Cut off tool holder□20×12　

Turning tool

Z Double spindle unitER11/AR11

X Spindle unitER16/AR16

Z Spindle unitER16/AR16

Knee tool holder□20

Stopper plate ZS Spindle unitER16/AR16

Chuck collet

Tapping collet

Nut

Tap

Center drill

End mill

Straight shank drill

Tapp collet

Chuck collet

Double turning holder S□20

Turning holder□20　

Stopper plate S

Double sleeve holder Aφ25　

Plain holder & turning□20 φ25

Double sleeve holder Ｄφ25　

Quad sleeve holderφ25　

Double turning toll holder□20

Triple turning tool holder□20

X Double spindle unitER11/AR11

Z Quad spindle unitER11/AR11

Nut

Center drill

Chuck collet

Tapping colletTap

End mill

Straight shank drill

Drill bush　20Drill holder

Round hole bush

Collet holder

Tapping colletCollet holder

Center drill

Center drill

Straight drill

Straight shank drill

Boring tool

Tap

Straight shank reamer

Chuck collet

Turning tool

Chuck collet

Tapping colletNutTap

Center drill

End mill

Straight shank drill

Tapp collet

Turning tool holder□20

Revolving unitER16/AR16(3 positions)

Back tool postØ25

Round shank tool for external

Revolving tool drive unit

Gang tool slide

Center drill

Straight shank drill

Tap

Straight shank raemer

Items BNA-42GTYMachining capacity　Max. machining diameter of bar work SP1 φ 42mm SP2 φ 34mm　Max. machining length 110mm Spindle　Number of spindle 2　Spindle speed range SP1 6,000min-1 SP2 5,000min-1Spindle minimum index angle SP1 0.001° SP2 0.001°Turret　Number of turret 2　Tool for SP1 Turning 3 Drill/ Bore - Revolving tool 3　Tool for SP2 Turning - Drill/ Bore 7 Revolving tool -　Type of turret 8St. Revolving tool 8(Op.)　Max. number of tools 21 〜 45　Shank size of turning tool □ 20mm　Diameter of sleeve holder φ 25mm　Revolving tool chuck AR16( φ 10)　Tool spindle speed range 6,000min-1Slide stroke　Traverse rate/ Feed rate Z1 axis 110mm 30m/min X1 axis 95mm 24m/min Y1 axis 260mm 30m/min Z2 axis 235mm 20m/min X2 axis 140mm 20m/min Y2 axis 70mm 12m/min Z3 axis 360mm 20m/min X3 axis 190mm 12m/minMotors　Spindle drive SP1 11/7.5kw (15min/cont.) SP2 5.5/3.7kw (15min/cont.)　Revolving tool drive Turret 1.0kW Gang tool 1.5kWPower supply　Electrical capacity 28KVA　Air supply 0.5MPa　Coolant tank capacity 165LMachine dimensions　Machine height 1,680mm　Floor space W2,350 × D1,475mm　Machine weight 3,500kgOptionsSpindle air blow, Spindle Brake, High pressure coolant, Inner High pressure coolant & Air blow, Coolant level swich, Signal tower, Coolant mist collector, Automatic power shut-off, Chip conveyor, Chip box, Parts catcher, Parts conveyor, Drill breakage detector, RS-232C, 100V

PRINTED IN JAPAN JAN. 2013

Machine specification

Model device MITSUBISHI M730VSDisplay devise 10.4”color LCDControllable axis command specified axes X1, Z1, Y1, C1-axis X2, Z2, Y2, C2-axis X3, Z3-axis auxiliary axes C3, C4, TI-axisControl axis groups 3 groupsInput code ISOCommand input system Incremental and absoluteFeed command system Per rotation feed and per minuteCutting feed rate and Rapid feed override Max.100%Tool offset data 80 pairsProgram storage capacity 320mStandard function 　On machine program check function　Manual feed function　Manual data input (MDI) function　Operation time display　Product counter display　Cycle time check function　Preparation functions　Start position automatic return　Automatic cut-off machining function　Tool set function　Spindle speed simultaneous command for 3 spindle　3 Sets of M code simultaneous command　Control axis swap function　Control axes superimpose command　Arbitrary superposition function　Function to superimpose 2 pairs of axes　Background editing　Simultaneous program editing two control axis group　Editing support functions　Calculator function　Code list display　Coordinate calculation function　Spindle C-axis function spindle　Constant surface speed control　Cut off confirmation　　Tool nose R compensation function　Arc radius specification　Thread cutting canned cycle　　　Spindle synchronizing control function　Milling interpolationOption 　Helical interpolation, Corner chamferring/ Radius function, 　Spindle synchronous tap function, Revolving tool synchronous tap function, 　Custom macro, Multiple canned cycles for turning, Canned cycles for drilling,　Inch / metric change

NC Specification

All specifications are subject to change without prior notice. This product is an export control item subject to the foreign exchange and foreign trade act. Thus, before exporting this product, or taking it overseas, contact your CITIZEN machine dealer. Please inform your CITIZEN machine dealer in advance of your intention to re-sell, export or relocate this products. For the avoidance of doubt products includes whole or part, replica or copy, technologies and software. In the event of export, proof of approval to export by government or regulatory authority must be evidenced to CITIZEN. You can operate the machines after the confirmation of CITIZEN.CITIZEN is a registered trademark of Citizen Holdings Co., Japan.

JAPAN CITIZEN MACHINERY MIYANO CO.,LTD. TEL.81-267-32-5901 FAX.81-267-32-5908 4107-6 Miyota, Miyota-machi, Kitasaku-gun, Nagano-ken, 389-0206, JAPAN

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