Specs_Okuma.pdf

Specifications Okuma LB4000 EXII/1500-MY Series CNC Turning Center

NASA Langley Research Center (LaRC) needs One (1) Okuma LB-4000EX-II/1500-MY(16.03 Standard USA Machine Configuration (STD)) Computer Numerical Controlled (CNC) Turning Center with an OSP P300LA Personal Computer (PC) based control with program simulation graphics and 2 USB port.. The Okuma LB-4000EX-II/1500-MY(16.03 STD) CNC Turning Center shall be delivered Freight on Board (FOB) to NASA Langley Research Center, Hampton Virginia, off loaded and installed in Building 1225, Room 106 within 30 weeks after contract award. The Turning Center will be used in a research environment for the manufacture of highly accurate and unique aerospace hardware including prototype models, flight test articles, developmental instrumentation, and wind tunnel test equipment.

Okuma LB-4000EX-II/1500-MY(16.03 STD) CNC Turning Center

The Okuma LB-4000EX-II/1500-MY(16.03 STD) CNC Turning Center shall be furnished in accordance with the following specifications and requirements:

1. Shall be of new construction of a standard commercial product offered for sale.

2. Shall have an overall machine footprint no longer than 210 inches in length including the chip conveyor and shall be no wider than 150 inches wide including the operator display panel.

3. Shall be capable of machining in the X,Y,Z, and C Axes.

4. Shall be capable of 4-Axis simultaneous machining.

5. Shall have absolute position encoders which require no “zero return” or homing procedure.

6. Mill/Turning Center Capacities

6.1 Shall have over 26” of swing over the bed.

6.2 Shall have over 16.5 inches of max turning diameter.

6.3 Shall have over 62 inches of “Z” axis travel.

6.4 Shall have a spindle bore diameter over 4.25”.

6.5 Shall have a chuck drawtube internal diameter over 3.5”.

7. Main Spindle

7.1 Shall have main spindle power over 40 HP and over 850 lbs-ft of torque.

7.2 Shall have a maximum main spindle speed over 2,750 RPM and a minimum speed less than 30

RPM

7.3 Shall have a 12 Inch diameter 3 jaw hydraulically operated chuck with foot operated actuator.

7.4 Spindle headstock shall be liquid cooled.

8. Main Spindle C-Rotary Axis

8.1 Shall permit 0 to 360 degree rotation full contouring capability coordinated with X,Y, and Z axis

8.2 Shall have a rotation increment of .001” when engaged as C axis.

8.3 Shall have a hydraulic disk brake capable of holding C axis still when heavy milling forces are present.

9. Turret Stations / Milling Spindles

9.1 Shall have a 12 station turret each of which is milling capable (M-Spindle).

9.2 Shall have three (3) static 1 inch qualified square tool holders which are pointed in the axial direction.

9.3 Shall have one (1) static 1 inch qualified square tool holders which are pointed in the radial direction.

9.4 Shall have two (2) static 1.5 inch diameter boring bar holders which are pointed in the axial direction.

9.5 Shall have a maximum M-Spindle speed over 5,000 RPM.

9.6 Shall have a minimum M-Spindle speed under 50 RPM.

9.7 Shall provide for Synchronized tapping on the M-Spindle.

9.8 Live milling tool holders shall hold tools up to an inch in diameter.

9.9 There shall be two (2) axial facing and two (2) radial facing live milling tool holders provided.

10. Linear Y-Axis

10.1 Machine shall have a total “Y” axis travel over 5 inches in length minimum centered on Z axis.

11. Machine Axis Accuracy

11.1 Machines headstock mounting surfaces shall be hand scraped for best surface contact with the base of the lathe

11.2 Machines X axis accuracy shall be .0005” or better over 4” of travel anywhere in the range of movement of X axis

11.3 Machines Z axis accuracy shall be .0008” or better over 12” of travel anywhere in the range of movement of X axis

11.4 Machines X axis repeatability shall be +/- .0002 or better.

11.5 Machines Z axis repeatability shall be +/- .0002 or better.

11.6 Machines C axis Positioning accuracy shall be +/_ .015 of a degree in a 30 degree movement or better.

11.7 Machines C axis repeatability shall be +/- .007 of a degree or better.

11.8 Machine shall be equipped with a thermal growth compensation system to retain accuracy during temperature variance.

12. Tailstock and Live Center

12.1 The machine shall be equipped with a tailstock driven by lead screw and servo motor.

12.2 The live center provided shall be a Morse Taper #5 of the live sleeve/dead center type.

13. Safety

13.1 The machine control must have real time 3D simulation technology of actual machine process.

13.2 Travel limit switches shall be mounted on all linear axis travel ends to provide a positive end of travel limit.

13.3 A programmable soft limit capability shall be provided for all linear axis travel extents.

13.4 Operator access door shall be provided with a safety interlock that prevents automatic operation with the door open.

13.5 There shall be a total enclosure of the mill/turn lathe to shield the operator from coolant and chips.

13.6 There shall be a view port made of laminated safety glass in the access door.

14. Waste Control

14.1 The machine shall have a chip conveyor suitable to remove swarf and chips from machine.

15. CNC Control Specifications

15.1 The machines control shall be Okuma OSP-P300LA THiNC which is PC based with multiple USB ports and touchscreen capability.

15.2 The machines control should allow manual axis manipulation while remaining in the automatic mode, and then resume programmed position and automatic movement without restarting.

15.3 Control shall have ball screw pitch error compensation on X, Y, and Z axis.

16. Axis Travel Speed Performance

16.1 The machines X Axis drive maximum speed shall be at least 975 inches per minute.

16.2 The machines Y Axis drive maximum speed shall be at least 475 inches per minute.

16.3 The machines Z Axis drive maximum speed shall be at least 1100 inches per minute.

16.4 The machines W Axis drive maximum speed shall be at least 300 inches per minute.

17. Programmer/Operator Training

17.1 Vender shall provide 3 days of Programmer/Operator training on-site at the machine.

17.2 Machine shall come with operation and maintenance manuals in book and/or CD format.

18. Additional Specifications

18.1 The machine shall include the Conveyor Side Hinge type LNS 42” Discharge, 1500 Bed

Length

18.2 The machine shall include one (1) Live tooling package, BMT comprised of two (2) end face mill/drill unit ER-40 and two (2) side face mill/drill unit ER-40

18.3 The machine shall include one (1) static Tooling Package for M/MY Machines comprised of three (3) OD-I – 1 inch stick, one (1) OD-II 1 inch stick and two (2) Boring bar holders –

1.5 inch ID

18.4 The machine shall include the Kitagawa BB212 12” Chuck

18.5 The machine shall include the Big Bore Spindle with actuator and drawtube

19. Warranty

19.1 The machine must include a minimum of a two years parts and one year labor warranty.