CNC INTERNAL GRINDER

Transcription

1 CNC INTERNAL GRINDER

2 CNC INTERNAL GRINDER Thermo-Friendly Concept Okuma s Only-One Technology Thermo-Friendly Concept now available in grinders! Combines the latest technology with traditional technology cultivated over many years Internal grinders with greater-than-ever reliability Thermo-Friendly equipped With PFC (compensation for following error during axial travel reversal) Simplified setting of workpiece and diamond (wheel/tool) origins Faster feedrate X, Z: 2 m/min 20 m/min New, flat, machine operation panel Premium Design Photos in this brochure include optional specifications. 2

3 Higher accuracy Thermo-Friendly Concept Thermo-Friendly Concept Traditional Okuma 5-sided hydrostatic guideway The Thermo-Friendly Concept delivers high machining accuracy with a unique machine construction design and thermal deformation control technology. The Thermo-Friendly Concept releases you from bothersome dimension compensation and warming-up, and provides outstanding dimensional stability even during long-time operation or changes in the plant temperature environment. Achieves high thermal stability not only during room temperature change, but also at machine startup and during machining redevelopment. Thanks to stabilized thermal deformation, warming-up time is shortened and the burden of dimensional correction during machining restart is reduced. * Excluding 4WS machines Both cross-slide and table always raised with oil to achieve high follow-up accuracy. Higher rigidity with support on 5 sides from upper and lower portions of slide. Distance between two guideways is wide, and vibration absorption characteristics are improved simultaneously with high speed and high rigidity. With crossed structure holds top and bottom solidly in place, accuracy and guideway durability are improved. The best machines for die/mold contour grinding. Use of PFC Higher machine utilization (compensation for following error during axial travel reversal) work spindle Cross-slide Chuck & workpiece I.D. Wheel spindle Grinding point rigidity 30 kg/µ (,676,400 lb / in) Table General purpose motor Ridges (protrusions) that occur at the R surface peak and elsewhere with the below actions can be reduced. Cross-slide base Bed Bed Diamond Cross slide X axis Table Z axis Grinding wheel Hydrostatic headstock for high precision round machining (Optional) 3-axis simultaneous normal dressing Axial face contour grinding Contour grinding Benefits of numerically controlled oscillating traverse Rotational accuracy 0.04 µm (.6 µin) Spindle speed 0 ~,000 min - infinitely variable NC commands Spindle motor AC brushless motor 2.4 kw (3.2 hp) * Application: High-precision round grinding Higher removal rates, lower cycle times Improved surface roughness compared to conventional traverse grinding Ideal for long workpieces Oscillating / traverse (combined) Wheel spindle ZA-axis table Oscillation speed Max 335 cycles/min [5 mm (0.20 in) stroke] Brushless servo motor Spindle motor Spindle 2 m/min (472 ipm) max traverse Rear radial bearings Front radial thrust bearings 3 4

4 Operability Integrated operations Simplified workpiece and diamond (wheel/tool) zero setting New operation panel (uses flat panel) 2-wheel spindle (2WS) Number of key inputs decreased with workpiece and diagram zero setting using a special zero setting button Flat switch with thickness of 2 mm used. Expanded range of uses for grinding wheel, including cylindrical and internal grinding, roughing, and finishing. ZERO SETTING Max bore grinding diameter Max cylindrical grinding diameter Max grinding length ø300 mm (when using ø00 mm grinding wheel) ø200 mm (when using ø00 mm grinding wheel) ø300 mm (Optional) 200 mm Diamond (wheel/tool) origin set steps: 27 3 Workpiece origin set steps: 9 3 (when mounting and setting a standard workpiece) 4-wheel spindle (4WS) -GAP installed (Optional) Up to 4 high frequency grinding wheel spindle sets can be mounted, enabling greater diversity of integrated grinding operations than with 2WS, and more efficient grinding. Pattern cycle function Fixed cycle programs can be prepared easily by selecting fixed cycle from menu screen and setting data with an interactive format according to the guide map. Menu selection 2 Pattern cycle selection 3 Pattern data input Max bore grinding diameter Max cylindrical grinding diameter Max grinding length ø300 mm (when using ø00 mm grinding wheel) ø200 mm (when using ø00 mm grinding wheel) ø300 mm (Optional) 30 mm When the menu input is selected from the file edit screen, Grinding cycle Dressing cycle can be selected. Select the pattern of the cycle. Grinding cycle plunge multiplunge External face simultaneous plunge tapered multiplunge parallel traverse tapered traverse Dressing cycle Outer face dressing Left/right axial face dressing Data input screen that matches the selected pattern cycle is displayed. This screen displays a guide map and guide messages, and input can be done in an interactive format. When input is completed, a fixed cycle program can be created. Grinding wheel spindle A belt drive system and high frequency drive system are available. The diagram shows a belt drive system. An integral motor/spindle is used with the high frequency drive system. Grinding wheel quil Grinding wheel spindle Belt Pattern cycle selection Pattern data input 5 6

5 Grinding wheel spindle type This is a high speed, high power, high rigidity grinding wheel spindle with a stable bearing life having dn value of.2 million, using an oil air lubrication system. * dn value: d = diameter n = spindle speed Wheel Spindle Type BS sleeve Belt drive system Spindle speed Output 6,000 ~6,000 min - {rpm} (4 types) 5.5 ~ 7.5 kw (7.5 ~0 hp) 2P 3-phase motor Lubrication type Grease Grinding Wheel Spindle Selection Table Wheel Speed min - 00,000 0,000 63,000 50,000 40,000 32,000 25,000 20,000 6,000 3,000 0,000,000 6,000 Wheel Peripheral Speed 2,000 m/min (7,740 ipm) 3,000 m/min (,0 ipm) Wheel Grinding Wheel Grinding Diameter Bore Diameter Bore 6.3 (0.25) (0.3) 0 3 (0.5) 6 (0.63) 22 (0.7) 25 (0.9) 32 (.26) 40 (.57) 50 (.97) 63 (2.4) 0 (3.5) 05 (4.3) (0.3) 0 3 (0.5) 6 (0.63) 20 (0.79) 27 (.06) 32 (.26) 40 (.57) 50 (.97) 63 (2.4) 0 (3.5) 00 (3.94) 200 (7.7) 9 (0.35) 2 (0.47) 5 (0.59) 9 (0.75) 24 (0.94) 32 (.26) 3 (.50) 4 (.9) 60 (2.36) 75 (2.95) 95 (3.74) 20 (4.72) 5 (6.22) 3 (0.5) 6 (0.63) 20 (0.79) 25 (0.9) 32 (.26) 42 (.65) 50 (.97) 63 (2.4) 0 (3.5) 00 (3.94) 30 (5.2) 60 (6.30) 200 (7.7) BK65 32 x 0 (.26 x 3.5) 40 x 00 (.57 x 3.94) 50 x 30 (.97 x 5.2) 63 x 60 (2.4 x 6.30) Grinding wheel spindle cannot be used with both 2WS and 4WS kits Grinding wheel spindle (Quill dia. x max. length) See torque constants on page 7 for high-frequency ID wheel spindle (HK) HK55 HK57 BK50 25 x 63 (0.9 x 2.4) 32 x 0 (.26 x 3.5) 40 x 00 (.57 x 3.94) 4 x 30 (.9 x 5.2) BK40 BK30 BK25 (0.79 x.97) 25 x 63 (0.9 x 2.4) 32 x 0 (.26 x 3.5) 3 x 00 (.50 x 3.94) 6 x 40 (0.63 x.57) (0.79 x.97) 25 x 63 (0.9 x 2.4) 2 x 0 (.0 x 3.5) 3 x 32 (0.5 x.26) 6 x 40 (0.63 x.57) (0.79 x.97) 23 x 63 (0.9 x 2.4) HK303 HK307 6 x 40 (0.63 x.57) (0.79 x.97) 23 x 63 (0.9 x 2.4) 32 x 0 (.26 x 3.5) BS x 20 (2.76 x.02) HK503 HK507 0 x 25 (0.39 x 0.9) 3 x 32 (0.5 x.26) 6 x 40 (0.63 x.57) (0.79 x.97) BS x 20 (2.7 x.02) HK02 6 x 6 (0.24 x 0.63) x 20 (0.3 x 0.79) 0 x 25 (0.39 x 0.9) 2 x 32 (0.47 x.26) BS x 270 (.77 x 0.63) HK x 3 (0.20 x 0.52) 6 x 6 (0.24 x 0.63) x 20 (0.3 x 0.79) 0 x 25 (0.39 x 0.9) BS3-6 3 x 270 (.50 x 0.63) BK quill Belt drive system HK quill High frequency drive system High frequency ID spindle torque, output Dn value Max.,600,000 Oil-air lubrication Output Output Characteristics of HK Series High Frequency ID Spindles kw (hp) (0) 6 (.2) 4 (5.4) 2 (2.7) HK57 HK307 (7.5kW(0.2hp)) HK Simultaneous spindle speed (x 0,000 min - ) HK507 (7.5kW(0.2hp)) HK503 (3.7kW(5hp)),000 ~ 40,000 min - {rpm} (5 types) 5.5 ~7.5 kw (7.5 ~0 hp) 2P 3-phase motor 4,500 ~50,000 min - {rpm} (9 types) High frequency power supply 2 kva Oil-air Oil-air Wider bearing dia. improves rigidity Grinding Wheel & Quill Projection Dimensions Applicable Wheel Spindle HK0007 HK02 BK25 HK503 HK507 BK30 HK303 HK307 BK40 HK55 HK57 BK50 BK65 D x max.l 3, 4, 5 x 3 (0.2, 0.6, 0.20 x 0.52) 6 x 6 (0.24 x 0.63) x 20 (0.3 x 0.79) 0 x 25 (0.39 x 0.9) 4, 5, 6 x 6 (0.6, 0.20, 0.24 x 0.63) x 20 (0.3 x 0.79) 0 x 25 (0.39 x 0.9) 2 x 32 (0.47 x.26) 3 x 32 (0.5 x.26) 6 x 40,, 23 x 63 (0.63 x.57, 0.79 x.97, 0.9 x 2.4) 0 x 25 (0.39 x 0.9) 3 x 32 (0.5 x.26) (0.79 x.97) 25 x 63 (0.9 x 2.4) 2 x 0 (.0 x 3.5) (0.79 x.97) 25 x 63 (0.9 x 2.4) 32 x 0 (.26 x 3.5) 3 x 00 (.50 x 3.94) 25 x 63 (0.9 x 2.4) 32 x 0 (.26 x 3.5) 40 x 00 (.57 x 3.94) 4 x 30 (.9 x 5.2) 32 x 0 (.26 x 3.5) 50 x 30 (.97 x 5.2) 63 x 60 (2.4 x 6.30) 5 (0.59).5 (0.73) 23.5 (0.93) 2.5 (.2) 3 (.50) 4 (.9) 63 (2.4) (0.3) 0 2 (0.47) 6 (0.63) 22 (0.7) 2 (.0) 35 (.3) Quill projection identification symbols Q L, mm D, mm Bearing dia, mm Standard L size (mm) 3, 6, 20, 25, 32, 40, 50, 63, 0, 00, 30, 60 D D2 M L L2 L3 B d m 2 M6 M M0 P.25 M2 P.5 M6 P.5 M20 P.5 M26 P.5 ød 6 (0.24) 7 (0.2) (0.3) 9 (0.35) 0 0 (0.43) m ød H ød B ød R (0.3) 2 (0.47) 4 (0.55) (0.7) 24 (0.94) 30 (.) 3 (.50) R2 effective (0.3) 2 (0.47) 4 (0.55) 6 (0.63) 2 (0.3) 25 (0.9) 3 (.22) 3 (0.5) 6.5 (0.65) 2 (0.3) 26 (.02) 36 (.42) 44 (.73) 59 (2.32) 5(0.20) 5(0.20) 6(0.24) 6(0.24) (0.3) 5(0.20) 6(0.24) 0 0 M0 P.25 3(0.5) 3(0.5) 2 (0.47) 2(0.47) M2 P.5 5(0.59) 5(0.59) 6 (0.63) 6(0.63) 20 (0.79) M5 M5 M6 M6 M M5 M6 M0 P..25 M2 P.5 M6 P.5 M6 P.5 M20 P.5 L L L2 L3 (0.3) (0.3) 0 (0.3) 3 (0.5) 5 (0.59) (0.7) (0.7) 2 (0.3) M 7(0.2) 7(0.2) 0 7(0.2) 3 (0.5) 5 (0.59) 9 (0.75) 9(0.75) 23 (0.9) 7

6 Perfect for any grinding pattern ID, OD, simultaneous 2-axis (3-axis) end faces Please select the best specifications for the machining you do. Specifications Applicable workpieces S specifications Center rest With center rest 2WS specifications F or R R-wheel spindle F-wheel spindle 4WS specifications T04 T03 T0 T02 Basic grinding examples Besides conventional straight or taper grinding, this CNC grinding machine has different grinding patterns which in free combinations, can do contour grinding with CNC control of the wheel. Two diamond tools can be used for basic functions to obtain the desired wheel configuration with profiling control. STANDARD ACCESSORIES Specification Grinding system Sizer Bed Workhead Wheelhead Wheel cover Wheel spindle Wheel quill Grinding wheel Workhead crossslide Table ID (OD) End face Spindle Spindle motor Spindle speed Override Swivel system Wheel motor Ways Controlled axis Ways Controlled axis Wheel dresser Wheel dresser attachment base Hydraulic oil tank Oil-air lubricator Air control unit Coolant tank Coolant nozzle Wheel spindle overload protector Tools Jack screws & washers Machine enclosures Lamp Skip dressing Multidressing Chuck surface washer Door interlock 3-jaw scroll chuck Center rests* High frequency drive wheel spindles* Power supply for high frequency wheel spindles Wheel spindle cooler High frequency wheel alignment lever Descriptions () Plunge (oscillation available) (2) Multiplunge (oscillation available) (3) Simultaneous plunge (ID & end face, or OD & end face) (4) Traverse (oscillation available) (5) Taper traverse (6) Profile () Plunge Indirect sizing (w/ program data) Bed washing Front bearing ID, ø00 mm (ø3.94 in) 3.5 kw (4.76 hp) brushless motor 00 ~ 750min - (Infinitely variable S4 code direct command) 50 ~ 200% 0 swivel, dial gauge, (0.0 mm ( in) /division) General purpose inverter motor 5.5 kw (7.47 hp) -2P Air-driven BK 50, oil-air lube, 20,000 min -, pulley, belt ø40 x 0 mm (ø.57 x 3.5 in) (Q50-400) ø60 x 32 mm (ø2.36 x.26 in) WA60K Closed, hydrostatic type XA, brushless motor, 2.9 kw (2.3 hp) Closed, hydrostatic type ZA, brushless motor, 2. kw (3. hp) Swivel type for internal and cylindrical grinding Position adjustment system Separate type, 40 ( gal), variable discharge 0.75 kw ( hp) pump motor For wheel spindles (BK, HK-type), Work spindle Separate type, 0 (4 gal), 0.25 kw (0.3 hp) pump motor Digital setting (Displayed by Ampere) Wrenches, toolbox Manual opening front door (w/ interlock) ON/OFF type; inside machine enclosure shield By NC programming By NC programming 9-inch; adapter, hard jaws ( set), soft jaws ( set) Should be selected from the following spindles:(refer to Optional Specificatious on page for details) HK0007, HK02, HK503, HK507, HK303, HK307, HK57, HK55 2 kva ; 2 units necessary for 2WS; 4 for 4WS, selected for wheel spindle Tank capacity; 70 ( gal) One necessary kit and specifications depending on type of accessory grinding wheel spindle Qty 5 2 Straight ID, OD End face grinding Taper ID and OD Contour grinding Straight ID, OD End face grinding Taper ID and OD Contour grinding + Grinding of long workpieces Traveling workhead (option) Straight ID, OD End face grinding Taper ID and OD Contour grinding + Large, small hole grinding or one chuck grinding of various materials Parallel type wheelheads Required options Required options Straight ID, OD End face grinding Taper ID and OD Contour grinding + Large, small hole grinding or one chuck grinding of various materials Turret type wheelheads Dedicated 4WS swivel type Required options Required options * Optional 7 Wheel profile generation dressing Plunge Deep ID groove, both faces 2 2 Straight ID 3 ID curve 4 ID taper 5 Face 6 OD taper 7 OD, end face OD grooves, both face End face contour grinding Wheel path Start Wheel path Start Contour grinding (ideal for diemold profiling) Wheel width Nose R compensation T0 Start Wheel path T03 9 0

7 Machine Specifications Optional Specifications Item Capacity Work spindle Workhead Cross-slide (XA-axis) Table (ZA-axis) Wheelhead Wheel dresser Motors Tank capacity Machine height Floor space Net weight Grinding bore range OD grinding range Max grinding lengh Chuck jaw grinding dia Swing within chuck cover Work length Work weight x length Spindle nose dia Spindle bore Spindle speed Spindle speed settings (C-axis) Swivel angle X-axis travel Travel / pulse-handle revolution Travel / pulse-handle gradation Auto-infeed rate Positioning rate Z-axis travel Travel / pulse-handle revolution Travel / pulse-handle graduation Auto-infeed rate Table oscillation travel Table oscillation number Positioning rate Swivel angle Travel (left-right) Wheel spindle drive Workhead spindle drive Coolant pump Hydraulic oil / lube pump Cross-slide (XA-axis) Table (ZA-axis) Hydraulic & lube oil tank Coolant tank Unit kg-mm (Ib-in) min - deg mm/min (ipm) mm/min (ipm) mm/min (ipm) osc/min mm/min (ipm) deg kw-p (hp-p) kw (hp) kw-p (hp-p) kw-p (hp-p) kw (hp) kw (hp) (gal) (gal) mm x kg (Ib) CENTER S spec REST 2WS 4WS ø5 ~ 300 (ø0.20 ~.) /ø300 (ø.) wheel Dia ø00 (ø3.94) ø200 (ø7.7) /ø00 (ø3.94) wheel Dia ø300 (ø.) /ø00 (ø3.94) wheel Dia ø00 (ø3.94) (option) ~ 200 (7.7) ~ 300 (.) ~ 200 (7.7) ~ 30 (5.2) ~ 300 (.) + wheel dia ø400 (5.75) ~ 200 (7.7) ~ 400 (5.75) ~ 200 (7.7) ~ 30 (5.2) ( ) ø00 (ø3.94) ø70 (ø2.76) 00 ~ 750 Infinitely variable (by NC programming) ( 50 ~ 50 (.97 ~ 5.9)) ø0., ø.0, ø5.0 (ø0.004, ø0.04, ø0.20) ø0.00, ø0.0, ø0.05 (ø , ø0.0004, ø0.002) ø0.002 ~ ø6,000 (ø ~ ø236.22) ø20,000 (77.40) 500 (9.69) 0.,.0, 5.0 (0.004, 0.04, 0.20) 0.00, 0.0, 0.05 ( , , 0.002) ~ 6,000 ( ~ ) Max 0 (via parameters) 335, 293, 260, 234, 23, 95, 0, 67, 56, 46 (via parameters) 20,000 (77.40) (3.7) Swivel type Swivel type (for 4WS) 5.5 (7.5) (4.76) (brushless motor) 0.25 (0.34) () (3.94) (brushless motor) 2. (3.) (brushless motor) 40 (0.6) 0 (47.6) 2,030 (79.92) 4,200 (9,240) 2,500 2,955 (9.43 x 6.34) 4,500 (9,900) 4,00 (0,560) 2,00 3,396 (0.24 x 33.70) 5,000 (,000) Belt-drive wheel spindle Quill type (oil-air lube) BK25 (MAX40,000 min - ) BK30 (MAX32,000 min - ) BK40 (MAX25,000 min - ) BK50 (MAX20,000 min - ) BK65 (MAX6,000 min - ) High-frequency drive wheel spindle 0.4 kw HK5004 (MAX50,000~00,000 min - ) 0.75 kw HK0007 (MAX00,000~50,000 min - ) 2.2 kw HK02 (MAX0,000~40,000 min - ) 3.7 kw HK503 (MAX50,000~5,000 min - ) HK303 (MAX32,000~5,000 min - ) 7.5 kw HK507 (MAX50,000~5,000 min - ) HK307 (MAX32,000~5,000 min - ) 5.5 kw HK55 (MAX5,000~4,500 min - ) 7.5 kw HK57 (MAX5,000~4,500 min - ) High-frequency wheel spindle power source 2 kva Quill for grinding wheel spindle Grinding wheels Various types available General purpose inverter motors: Chucks Air-type 3-jaw power chuck Diaphragm chuck Finger chuck Diaphragm finger chuck Collet chuck Magnetic chuck Shoe-type centerless chuck Special chuck cover Fixed Adjustable Open/close adjustable Spare belts Wheel spindle ( belt and pulley per wheel spindle unit) (Select Wheel speed from the Grinding Wheel Spindle Selection Table below) Grinding bore ø25 ~ 63 (ø0.9 ~ 2.4) ø32 ~ 0 (ø.26 ~ 3.5) ø40 ~ 00 (ø.57 ~ 3.94) ø50 ~ 30 (ø.97 ~ 5.2) ( set std) ø63 ~ 200 (ø2.4 ~ 7.7) ~ø25 (ø0.9) ø0 ~ 32 (ø0.39 ~.26) ø6 ~ 50 (ø0.63 ~.97) ø25 ~ 0 (ø0.9 ~ 3.5) ø6 ~ 50 (ø0.63 ~.97) ø25 ~ 0 (ø0.9 ~ 3.5) ø50 ~ 300 (ø.97 ~.) 7.5kW-2P Work spindle Auto loader Robot Sizing gauge (control unit 3P) Front fork (TSK) Front fork (Marposs) End sizing gauge NC normal / R dresser Rotary dresser Hydrostatic headstock (headstock changes) Mobile headstock (required with center rest) Auto open/close cover Spindle orientation X axis AbsoScale Coolant tank Magnet sandpaper combined use type Cyclone type 2

8 Compact CNC in pursuit of better price-performance Make your machine utilization rate soar MacMan Standard Far less trouble-shooting downtime As soon as an alarm is indicated, the NC has the printer print out a hard copy of the information needed to trouble-shoot the problem. You can fax the copy right to the service center and spare yourself the usual long and involved phone calls. Reduced setup change time By streamlining the file operation order, input/output of part programs takes far less time. End-users can use a conventional PC to display their own operation procedure up on the NC screen. Provides real-time results information The CNC compiles actual production data as it happens and outputs it to the screen. Operators can use the data make to improvements Accurate up-to-date information at your fingertips The end-user, armed with a PC, can manage things right on the spot in the way he or she wished. OSP-U20G Absolute position feedback Okuma's absolute position feedback system saves your current position when power failures or inadvertent operator errors occur, making zero point recovery restarts unnecessary. That's why Okuma's OSP CNCs have been keeping customers happy for over 30 years. Improved ease of use Flat panel Simplified setting of workpiece and diagram zero points Energy-saving functions Saves energy with power-saving timer Display screen off, mist collector stopped, in-machine lighting off Energy-saving LED lighting in machine Machine & Control mechatronics OSP was originally developed by Okuma. Okuma offers a truly integrated single source mechanical and electrical entity because Okuma totally controls the manufacture from design to inspection. Reliable and variable software Okuma has developed their systems with next-generation flash memory for the most reliable CNCs available. Use our NC controllers for cutting-edge functions and performance. An assistant for key operations Help function Standard When you cannot find specified G code/m code etc. in machining programs, one touch on 'Help' key enables you to see the content of each code on NC display, efficiently assisting you in machining operations. When an alarm is activated, the 'Help' key will display the content of alarm on NC display, assisting the operator in troubleshooting. OSP-U20G Standard Specifications Axis control Machine controles Spindle control Grinding wheel spindle Position feedback No. of control systems Feed drives Unit systems commandable Min input Max input Display/operating Display panel Data setting function Display function Program edit function Programming operations Program selection Work select (index program) Sequence number search Sequence restart Manual interrupt PLC monitor Grinding wheel data calculation command Fixed grinding cycle Fixed dressing cycle mm/rev and mm/min Combination programming Chamfering, corner R Arc radius programming Taper angle programming Simultaneous X and Z axes: 2 axes 2 linear axes axis, BL motor spindle, S 4-digit command, constant speed Spindle rotation override 50~200% axis (Inverter control) Spindle speed (G99 mode) SW 6-digit command, cutting speed (G9 mode) SW 6-digit command Grinding wheel constant speed function (G9) Grinding wheel spindle override 50~20% Max spindle speed limitation (G50), max peripheral speed limitation (G50) OSP type all-range absolute position feedback One system override switch 0~200% 3 steps Rapid traverse during single block off in auto mode is 00% fixed, feedrate other than that on the left is 0~200% 3 steps mm (0. µm), 0.00 mm ( µm), 0.0 mm, mm 0.00, 0.0, mm (0. µm) GI-2N-SP is mm (0.0 µm) 0.00 Decimal digits, ± mm GI-2N-SP is ± mm 0.4 inch VGA TFT color LCD (VGA 640 x 40) Flat panel Zero point offset, grinding wheel data, grinding wheel management data, diagram data, software limit, chuck/tailstock barrier and more can be set Simple zero setting Actual position, program, block data, check data, alarm display Operation status is indicated with 6 lamps (running; S, T, M; temporary stop; program stop; limit; alarm) Screen editing is done while program is displayed on screen Program copying, name change, deletion, protection, verification Tape read, punch, date input, list display Memory initialization and formatting Program needed for machining is selected from among registered programs of many types Single selection possible by registering program needed to machine workpiece in index program. (a) grinding cycle, (b) wheel trueing cycle (c) wheel straightening cycle Program proceeds to the specified sequence number. Return to specified sequence, auto restart from returned point Manual operation is possible during auto operation. Auto return to interrupt point possible Supports maintenance work after machine shutdown Ladder display, data trace, etc Programming Program format ISO/EIA auto discrimination Inch/millimeter switch Basic interpolation function Linear interpolation, circular interpolation Coordinate system Workpiece coordinates (G X axis, Z axis) / grinding wheel coordinates (G2 U axis, W axis) Tool function Grinding wheel data (wheel offset, wheel size) 0 sets Diagram data (tip coordinates) Max 9 sets 3 4 User task Zero shift Home position function Program capacity Program storage capacity Operation backup capacity MacMan Machining records totals/display Operating results totals/ display Operating history totals/display Trouble information totals/display File output of results information, trouble information Monitoring NC grinding load monitor Auto calculation of wheel size and wheel data update after dressing The following fixed cycles are possible (a) Grinding fixed cycle Inner (outer) face plunge, (b) Grinding fixed cycle Inner (outer) face axial face (tapered) multiplunge, (c) Grinding fixed cycle Axial face plunge, (d) Grinding fixed cycle Inner (outer) axial face simultaneous plunge, (e) Grinding fixed cycle Parallel traverse inner (outer) face, axial face, (f) Grinding fixed cycle Tapered traverse inner (outer) face, axial face, The following profile grinding is possible (a) Copying profile execution, (b) profile generation grinding The following fixed cycles are possible (a) Wheel dressing fixed cycle Inner (outer) grounding wheel outer face, (b) Wheel dressing fixed cycle Inner (outer) grounding wheel left axial face, (c) Wheel dressing fixed cycle Inner (outer) grounding wheel right axial face, (d) Wheel dressing fixed cycle Axial grinding wheel, (e) Wheel dressing fixed cycle Angle grinding wheel, simultaneous on axial and outer faces (angle grinding wheel only) G95, G94 Use feedrate in mm/rev and mm/min: combination of mm/rev and mm/min Circular interpolation by commanding radius L and end point X(U), Z(W). Taper interpolation possible by designating angles from end point and start point of X (U) and Z (W) GOTO statement, IF statement, arithmetic operation Local variables, system variables Common variables 200 sets Calculation and travel of G code zero offset Positioning to HP parameter set position ( sets) 60 m 60 m Totals and displays machining status per selected main program Machine operating times (power ON, cutting, etc) Input of reasons for non-operation Time charts of machine operating status Auto totaling of data required for troubleshooting (alarm history, etc) Machining, operating, operating history, trouble info Grinding load display Grinding overload detection function (ampere display) Gap elimination function (ampere display) Chuck barrier Set up grinding wheel off-limit area depending on chuck shape Tailstock spindle barrier Set up grinding wheel off-limit area depending on tailstock quill shape External I/O, communication functions RS232C Interface RS232C interface (cable not included) High-speed / high-accuracy functions Hi-G control Positioning acceleration/deceleration conforming to motor s speed/torque characteristics Droop control Other functions Energy-saving functions When cycle start does not occur within set time, machine goes into energy-saving mode Mist collector stop, screen display off OSP-U20G Optional Specifications Item Interactive capacities I-GAP One Touch IGF G Programming Inch/metric switchable User task 2 Common variables Standard 200 sets Program capacity Tape storage capacity Standard: 60 m program capacity Standard: 60m Monitoring 3-step status indicator lamp Operation end lamp Alarm lamp NC operation monitor Work counter Kit Specifications Sub programs Calculation function operations With I/O terminals,000 sets (no backup at 20 and after) 320 m 640 m,20 m 2,560 m 320 m 640 m Type B Type C Yellow revolving light Red revolving light 6-digit resetting -digit resetting or not Hour meters Power ON, resettable Spindle ON, resettable or not Auto operation ON, resettable or not Displays wheel change indication Displays wheel change warning Contact detection with acoustic Detection of grinding wheel and workpiece emission sensor contact using AE sensor Measuring Post-process work gauging Locator Post process gauging 5-step, 7-step systems Post process gauging BCD system Wheelhead mounted Marpos T25G Table mounted Marpos UNIMAR + E3µ External input/output communication RS232C interface FD adaptor for USB memory USB memory input/output.44 MB DNC-A DNC-A Additional channels DNC-T DNC-T3 Automated functions Oriented spindle stop Auto power shutoff Warm-up External workpiece selection External command BCD 4-digit Okuma robot, loader I/F (built-in) Okuma robot, loader I/F (independent) Other manufacturers Okuma standard / B standard robot, loader I/F Okuma standard / C standard User designation Dressing during loading Cycle time reduction Other functions Spare M code Electric Proximity SW Machining completion, alarm Above + external command Rotary switch types Digital switch 99 types External command BCD 2-digit 2 sets 4 sets Chuck/tailstock quill can be operated during program stop Auto grinding wheel straightening Video simulation Emergency return (not applicable in internal grinding) Requires pulse handle overlap setter, touch probe * NML: normal, ANM: animation, E: economy, D: deluxe NML ANM I-GAP E D E D E D

9 GI-20N Dimensional and Installation Drawings (2WS standard machine) CNC INTERNAL GRINDER 2,955 (6.34) 2,500 (9.43) When using Okuma products, always read the safety precautions mentioned in the instruction manual and attached to the product.,750 (6.90) 600 (23.62),50 (45.2) 50 (.97) (2.65) (5.9) This product is subject to the Japanese government Foreign Exchange and Foreign Trade Control Act with regard to security controlled items; whereby Okuma Corporation should be notified prior to its shipment to another country. 2,030 (79.92) The specifications, illustrations, and descriptions in this brochure vary in different markets and are subject to change without notice. Pub.No.GI-20NII-E-(a)-400 (Nov 202), OGUCHI-CHO, NIWA-GUN, AICHI , JAPAN TEL (057) FAX (057)