SG-20

CUBIC

7-axis Swiss-type CNC Lathe

• Simultaneous front/back machining • Built-in motor rotary guide bushing• 20mm bar capacity• Convertible to chucker mode in minutes• FANUC control

Impact. Delivered.

Impact. Delivered.

Simultaneous front/back machining

Perform highly complex front/back simultaneous machining

with dedicated back tool post and X2, Z2 axis on the back

spindle. In combination with the rapid feed rate, SG-20 has

substantially cut cycle times. No wonder SG-20 is acclaimed by

customers as a highly rigid, reliable and versatile machine.

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T01

T02T03

T04

T05

T06

T11

T12

T13

T14

T15

T16

T17

T41

T31

T21

T32T33

T34

T42T43T44

T03

T04

T05

T06

M23CW

M24CCW

M123 CW

M124 CCW

T31 T32 T33 T34

9 tools for OD4 tools for face ID 8 tools for back ID

SG-20 makes it possible to complete a wide variety of tooling jobs at one time.

t 4-spindle cross tool attachment is standard and with Y-axis can carry out complex operations, such as off-center drilling, off-center tapping, end milling, etc.

t Single or double-headed collet holder can be mounted at ID tool post (20mm bore), available for face, back ID working.

t Spindle speed synchronization is there for cut-off and transfer of workpiece. SG-20 goes further with spindle phase synchronization which allows control of spindle phase angle for features like R cut-off.

t High precision spindle can reach max. speed: 10,000 rpm. Geometric accuracy and surface finish are both much improved and with little noise even at high speed.

t Max. machining length: 6.7” (170 mm) per chucking.

21-tool capacity

Convert to chucker mode in minutes

With the increase in material cost in recent years, it’s great that SG-20

has chucker mode to reduce waste. In chucker mode, the machine

doesn’t require the space between the guide bushing and the collet

so there is less bar remnant. Chucker mode does not require the use

of ground bar stocks, so it is suitable for cold-drawn bar machining.

In addition, the powerful chucking force enables heavy cutting,

minimizes roughness and improves roundness. The user can choose

between guide bushing mode or chucker mode according to the

length of the part to be produced and be able to convert to chucker

mode in minutes.

Higher precision

t The rigidity of horizontally opposed gang tool posts at main

spindle side and the headstock linear guides are increased so

tooling accuracy is not influenced by cutting load variation.

t The main/sub headstocks, and X axes (X1, X2) are arranged in a

thermal symmetric way, reducing the heat-induced deformation

to a minimum. The small thermal displacement of the bed during

long periods of operation promotes high accuracy.

t High rigid cast machine bed, absorbing the vibration caused by

high-speed rotation and rapid traverse.

Reduced tooling idle time

t Rapid traverse: Max. 32 m/min (X1: 24 m/min).

t Tool span is only 28 mm, greatly reducing tool change time.

Direct C-axis indexing

Unlike conventional machines, direct C-axis indexing enables

deceleration to the chosen index position directly, without the need

to home return, reducing spindle indexing time.

Maximum high-speed control, reducing idle time.

t Two-path control. Programs can be specified at main and back

spindle side separately, and they are read and processed at the

same time.

t With X2 axis and independent back tool post, simultaneous

machining at main and back spindle side can be done.

t M and T codes, axis feed can be specified at the same command block.

t High-speed thread cutting function, reducing thread cutting time.

Easy access to tool zone

The operation panel is mounted close to the cutting zone. It

can swivel for easy to monitor tool and part program while

simultaneously viewing the machining process. The lift-to-full open

safety door offers expanded view of cutting zone and is convenient

for tool setup.

t The large capacity chip pan makes cleaning easy and extends the

interval between cleanings.Chips pan is put on coolant circulation

inlet, convenient for cleaning.

t There is chip filter before coolant flows into the tank, which

makes it convenient for cleaning.

Through tool coolant

The high-pressure coolant system can be hooked up for through-

tool coolant, producing great results even for small diameter drills.

Built-in motors are extremely compact and achieve maximum rigidity, a requirement for achieving maximum speeds and exact concentricity.

Built-in motor spindle on front and back spindles

They have high power up to high speed and maintain high precision

and low vibration all in one simple mechanical structure.

Built-in main and back spindle motors increase tooling accuracy.

Built-in motor rotary guide bushing

Servo rotary guide bushing enables high-speed and accurate

machining.

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Tooling Zone

Top ViewChucker Mode

Front ViewTop View

Top view - Chucker mode

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Tooling Zone

Top ViewChucker Mode

Front ViewTop View

Front view - Chucker mode

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Tooling Zone

Top ViewChucker Mode

Front ViewTop View

Top view - with guide bushing

MODEL SG-20

Controller FANUC 0i-TFNo. of controlled axes 7 (X1, Z1, Y1, X2, Z2, C1, C2)Spindles synchronized (speed & phase angle) S1 - S2 (Main spindle -Back spindle)Axes synchronized Z1 - Z2Axis composite control Z1 - Z2Axes simultaneously controlled Max. 4 axes / each pathLeast input increment 0.001mm(X in diameter)Max. programmable dimension ± 8 digitsRapid traverse rate 30/m / min (X1 24 /m/ min)Spindle / Feed rate override 0 ~150%, 10% incrementsAbsolute / incremental command X, Z, Y: Absolute / U, W, V IncrementalTool offset pairs ±6 digits / 64 pairsDisplay unit 10.4” color LCD

Standard NC Specification

Other NC function SG-20

C axis at main spindle standardC axis at back spindle standardCross tool spindle rigid tapping standardThreading, synchronous cutting standardManual handle feed standardMemory card I/O interface standardRS232C interface standardBackground editings standardRuntime and parts count display standardCustom macro standardConstant surface speed control standardSpindle synchronous control standardAxis synchronous control standardTool geometry/wear offset standardProgrammable data input standardR Chamfering/corner R standardTool nose radius compensation standardHRV control standardMultiple repetitive cycles standardExtended part program editing standardInch / metric conversion standardDirect drawing dimension programming standardCanned cycles for drilling standardRigid tapping (Main/back spindle) standardManual handle retrace standard

t Mirror image function is convenient for programming

for machines with opposed tool slide as SG-20. Also,

“mirror image ON” (G68) is built in the Cubic-made

opposed tool calling software, so without the need

to specify G68 or G69 with the tool called, preventing

tool crash due to mis-programming.

t Custom-made software is provided as a standard

accessory for easier operation such as tool life

management, tool interference check and on-screen

operation of options such as work conveyor, etc.

Machining capacity

Bar stock diameter 0.12~0.80 in. 3~20 mm

Max. work chucking diameter at back spindle side

0.8 in. 20 mm

Max. machining length • 6.70 in. (170 mm) ( Built-in motor guide bushing)

• 9.84 in. (250mm)( Fixed guide bushing)

• 1.77 in. (45mm) Chucker mode

Max. main spindle drilling / tapping diameter

ø 0.39 in. ø 10 mm/M8

Max. back spindle drilling / tapping diameter

ø 0.31 in. ø 8 mm/M6

Max. drilling /tapping dia. of cross toolspindle

ø 0.24 in. ø 6 mm/M5

Max. mountable slitting saw dia.1Nos. at cross toolpost

ø 1.18 in. ø 30 mm x2

Max. drilling / tapping diameter of back tool spindle

ø 0.24 in. ø 6 mm/M5

Main spindle 200~10,000 min-1 (*1)

Back spindle 200~12,000 min-1 (*2)

Cross tool spindle 200~5,000 min·1

Back tool spindle 5,000 min.1

OD turn tool (left) 2

OD turn tool (right) 3

Face fixed ID tool 4

Back fixed ID tool 4 mounted at face / back ID tool post) + 2 mounted at independent back tool post

Cross live tool 4

Back live tool 2

Tool size

OD turn tool shank 0.47x0.47x3.35 in.

12x12x85 mm

Boring tool shank (for face / back, back toolpost)

ø 0.80 in. 20 mm

Chuck for cross livetools ER11 x21 ER 16x 2

Chuck for back livetools ER16x2

Rapid traverse 30m/min (X: 24m/min)

Controlled axes 5(X1 ‘Y1 ‘Z1 ‘X2 ’Z2)

Motors

Main spindle motor 3/5 HP 2.2/3.7 KW

Back spindle motor 2/3 HP 1.5/2.2 KW

Axis motor 0.67 HP .5 KW

Cross tool spindle motor 0.67 HP .5 KW

Back tool spindle motor 0.67 HP .5 KW

Coolant pump motor 1 HP 0.75 KW

Lubrication pump motor 0.000254 HP 0.011 KW

Spindle cooling oil pump motor .25 HP 0.19 KW

Others

Net weight 3748 lbs. 1,700 Kg

Equipment capacity 11 KVA

Power source required ≧ 9 KVA

Air pressure ≧ 0.4 MPa (4Kg / cm2)

Airflow ≧ 1 cfm (30 NL/min)

Cutting coolant tank capacity 30 gallons 115 L

Machine size: LxWxH 65 x 43 x 67 in.

1,640 x 1,080 x 1,700 mm

SPECIFICATIONS

Program Aid

© 2018 Cubic Machinery, Inc. CUBIC, the CUBIC logo are trademarks and/or registered trademarks of Cubic Machinery, Inc. in the United States and other countries. All rights reserved. All company and/or product names are trademarks and/or registered trademarks of their respective manufacturers. Features, pricing, availability, and specifications are subject to change without notice.

CUBIC 13401 Benson Ave., Chino, CA, 91710Office: (909) 590-9995Email: sales@cubicmachinery.comWebsite: www.cubicmachinery.com

Standard Accessories

t Main spindle collet sleeve (for round bar machining)

t Back spindle collet sleeve (for round bar machining)

t Built-in motor rotary guide bushing

t High-pressure coolant system

t 4-spindle cross tool attachment

t Back toolpost (with 2 fixed tools, 2 live tools)

t Spindle cooling unit

t Safety door interlock

t Coolant flow switch

t Work conveyor

t Parts catcher

t Chip conveyor and chips cart

t Standard tools

t Slide fixing blocks (for transit)

t Automatic power shut-off

t Face / back ID toolpost

t Cutting coolant nozzles

t 3-tiered warning lamp set

t LED work light

t Coolant pump (1 HP)

t Bar feeder interface

t RS232 interface

t Ethernet interface

t Software for tool-tip height compensation

t Tool life management

Optional Accessories

t Kit for chucker mode

t Fixed guide bushing

t Oil cooler (for coolant temperature control)

t Oil mist separator

t Tool setting block gauge

t Small bar kit (06-17, 1mm increment)

t ER11 drill collet holder (20mm shank, for face/ back, or back ID

tool post)

t ER16 drill collet holder (20mm shank, for face/ back or back ID

tool post)

t Double-headed ER11 drill collet holder (20mm shank, for face/

back ID tool post)

t Double-headed ER11/ER16 drill collet holder (20mm shank, for

face/back ID tool post)

t Bar feeder