<JAPAN> Precision Internal Grinding Machine IGM Series

Precision Internal Grinding Machine IGM Series OKAMOTO MACHINE TOOL WORKS, LTD. 2993 Gobara, Annaka, Gunma, Japan 379-0135 TEL : +81-27-388-9595 FAX : +81-27-385-1144 URL : www.okamoto.co.jp *Prior to and while using our products you are requested to thoroughly go through the articles on danger, warning and attention for the sake of safety described in operation manual attached to the machine and also in the warning plates mounted on the machine. *When the products fall under the export controlled goods stipulated in “Foreign Exchange and Foreign CAUTION Trade Act”, it requires the license or approval of Government of Japan whebn exporting out of Japan. *Specification subject to change without notice. This printed matter uses environmentally friendly paper and vegetable oil inks Printed in Japan in November 2021 2021101000MT-0

High Precision + High Effi ciency IGM series will meet your demand for high precision internal grinding with a wide versatility. Okamoto Machine Tool Works is known as the leader of grinding CONTENTS machine manufacturing in Japan, and getting praise around the world. We have been providing the high-precision high-quality Contents ………………………………………… 1 - 2 grinding machines since the development of the fi rst surface grind- Lineup & Machine Select …………………… 3 - 4 ing machine in Japan in 1953. IGM15EXⅢ/15NCⅢ…………………………… 5 - 6 We started developing the internal grinding machines in 1954, and ………………………………………… the lineup has expanded from a versatile general-purpose type to IGM2MB 7 - 8 a specialty including automated type with use of robot loaders for IGM2TNCⅢ …………………………………… 9 mass production. IGM1V …………………………………………… 9 IGM series is widely used in a variety of automobile parts, gears, Specifi cations ………………………………… 10 medical equipment, semiconductor manufacturing equipment, and precision machinery industries. The roundness, concentricity and IGM1V Specifi cations, Standard accessories, Optional accessories …… 11 cylindricity of manufactured workpieces are producted and repeat- ……………………… ed. Okamoto holds a high market share of internal grinding ma- Standard accessories 11 chines both in Japan and overseas. Outline drawing………………………………… 12 You can obtain higher level of precision grinding by utilizing the in- Optional accessories ……………………… 13 - 14 IGM Series ternal grinding machine IGM series. 1 2

Lineup & Machine Select IGM15EX /NC IGM15NC -2 IGM15NC -2B Test result of internal mirror fi nish grinding Model IGM15NCⅢ Dimensions IDφ7.41mm, ODφ13.8mm, L: 22.5mm Material Carbide Wheel Diamond wheel Surface roughness Ra0.0053μｍ Roundness 0.156μｍ Accuracy Edge R shape accuracy 0.31187mm Cycle time 40 minutes (from non pre- formed workpiece) Simple data input with automatic measurement Complexity, Effi ciency, Automation Work Effi ciency is increased function of grinding data with 2 spindles by driving 2 spindles independently ■Max. 10 Faces grinding by stan- ■Max. 10 Faces grinding by stan- ■Up to 10-face grinding with the Variety of Applications and models they dard interactive software. dard interactive software. standard software. can be programmed on. ■It specializes for straight grinding ■AC servo motors for wheel ■AC servo motors for wheel and end face grinding. (simple spindle and work spindle are spindle and work spindle are NC: EX ) provided as standard acces- standard to achieve high accu- Straight Multi-step grinding ■Simultaneous 2-axis grinding, sories to achieve high accu- racy. taper grinding, contour form racy. ■Two spindles are driven inde- grinding software with G code ■High-precision model that use pendently, the grinding diame- are available. (full NC: NC , some are optional) a closed-loop system for infeed axis (X-axis). ter is increased and versatility is greatly improved. ■AC servo motors for wheel spindle and work spindle are pro- ■Multi step grinding by 2 spindle system with high accuracy for ■Better Accessibility makes wheel replacement and work set- vided as standard accessories to achieve high accuracy. concentricity & squareness. up easier. ■High-precision model that use a closed-loop system for infeed axis (X-axis). Recommended model Recommended model General purpose IGM2MB IGM15NC N C N C IGM15EX IGM15NC -2 IGM2MB IGM2TNC IGM1V Wheel forming taper Table-swivel taper grinding grinding Recommended model Recommended model N C IGM15NC N C IGM15NC Option EDELAC Win Option Work spindle NC swiveling Space saving and automation Best-Seller CNC Internal Grinder Precision Internal Grinding for long workpiece with vertical machine Contour grinding Outer peripheral & ■ ■ ■ taper grinding It has user-friendly layout It specializes in internal grind- It is small footprint and good for with operation controllers on ing of long workpieces such as grinding small workpieces with the front of the machine. spindles and cylinders. 840-mm machine width. ■Grinding recipes (36 types) ■It uses the software for text- ■Accuracy is stable even during can be stored for grinding free panel screens. mass production grinding. conditions and table speeds. ■The maximum length of straight ■Fully enclosed model to support ■High-precision ball screw workpieces is 1000 mm. (consult the robot.(optional) and linear guide are used for Okamoto for the angle of work- Recommended model Recommended model the table drive and guideway. pieces) N C IGM15NC IGM15NC -2 ■ N C It is equipped with an end face grinding device (optional), im- ■It is equipped standard with 1 spindle, optional 3 and 4 spin- Option EDELAC Win IGM15NC -2B proving the versatility. dles models are also available with custom modifi cation. 　(consult Okamoto) 3 4

Precision Internal Grinding Machine IGM15EXⅢ/15NCⅢ・15NCⅢ-2・15NCⅢ-2B Interactive software is used in EXⅢ and NCⅢ Interactive software (common to all models) Same operation system as OKAMOTO Just by inputting the wheel abrasive size There are no letters on the screen. Data Storage includes wheels (6) and cylindrical grinding machine OGM (diameter and width) and workpiece size Utilizing the touch and teach functions, workpieces (21) as standard series is used. Grinding dimensions, the optimum grinding con- Touch screen even complicated shapes can be ground. File data auto set ditions and dressing conditions are auto- function matically created. Computed values are input management generated based on our expertise of the grinding theoretical values. [ Main menu ] [ Wheel shape select page ] Program storage page Displaying selected fi le T1: wheel spindle 1, Dressing shape selection T2: wheel spindle 2 Option To setting page of each wheel shape Direct sizing device setting process display Lights ON when the process is selected Abrasive selection Displaying selected wheel shape e.g.) wheel spindle 1 is selected Displaying selected wheel shape e.g.) wheel spindle 2 is selected Displaying selected grinding method To setting page for each grinding method Grinding method selection Main pages EDELAC Win Program - dedicated software for contour grinding option Straight grinding setting page Taper grinding data setting page Mirror finish contour grinding for Optional software that enables com- (standard on all models) (IGM15NC , 15NC -2 option) cold forge dies plex grinding and contour grinding When grinding diffi cult-to-cut materials such as carbide, In the case of a workpiece to be ground along the shape, the rigidity of the spindle itself is required in addition to contour grinding is possible by creating the passage to the rigidity of the machine body. grind along the workpiece based on the workpiece draw- In the carbide grinding, the stock removal often exceeds ings, creating the passage program, and reflecting the φ1 mm, and if there is no rigidity, it will keep sparking due passage program to the interactive software. to the bouncing of the wheel. This software not only allows you to create programs by In addition, it is necessary to accurately synchronize the importing CAD data, but also simulates the passage of contour grinding with the commands of simultaneous the wheel on the screen of your computer, so it is espe- 2-axis control. cially effective for complex internal features where it is Okamoto machines have the advantages of supporting difficult to visually check the interference between the it with the standard model, without having a costly high- wheel and the workpiece. er-precision option. Program fl ow End face grinding setting page Contour grinding page IGM15NC , 15NC -2 Passage drawing Simulation Programming It is uploaded into the (standard on all models) ( option) interactive software Create workpiece and wheel Activate the wheel and sim- If no problem is found, the The created program is reg- passage in the same way as ulate the movement program is created. istered. Set the conditions CAD to start grinding. 5 6

Precision Internal Grinding Machine IGM2MB Best-selling IGM2M is upgraded General purpose model ■ Main operation panel ■ Sub operation panel Performance, accuracy, and productivity have been further improved. Latest general-purpose internal grinding machine that enables program storage. For the first time, it is equipped with a ● You can enter the table position data digital conversion function that enable to easily with pressing the symbol mark Program register the grinding conditions and table Ease of keys on the bottom of main menu. speed settings set with the select switch. ● Variety of supporting functions are storage (36) Data entered on the LCD control. Setup available such as dimension correction, We have also solved the difficult task of dressing interruption, cycle skip. versatile data input. Grinding accuracy has been improved by ● The max table speed is 15 m/min. By Various func- newly added fine grinding table speed shortening the acceleration/decelera- tions that setting (rough grinding and 2-step setting) Short tion time during reversal, high-speed ■ Table position/ speed setting method and 3 modes of intermittent infeed set- stroke of 500 strokes/min is possible contribute to ting (right, left, both ends) to the standard cycle time even with a short stroke of 2 mm. accuracy functions. ● In addition to the high-speed stroke How to set the positions How to set the speed function, the cycle time is further short- ened with the wheel spindle motor 3.7 You can set the stroke limit, coolant start point, dressing The table speed, dressing speed, tarry position and time kW, retractable dresser of air cylinder position, and intermediate stop position by moving the can be easily set with the volume dial. Ball screws and linear guide are used for drive, increased rapid feed speed for the table drive and guideways. The ma- spindles, and revised movement timing. wheel to the desired position with the table feed control- The setting value is displayed on the main screen so it Improved chine achieves high-precision positioning at ler on the sub operation panel. Then, pressing the symbol can be easily checked and saved as a program. positioning the reversal points with high repeatability. keys at the bottom of the main menu. Quickly and simply. accuracy Since this machine does not use hydrau- Compared to the numeric keypad, the position setting is lics, it allows for temperature stability and quick and accurate. no need for replacing hydraulic oil. Various Auxiliary Functions Surprisingly simple and accurate setting procedure of grinding conditions is a result of the ease of use. 　●1 Dimension correction 　●4 Wheel replacement position After grinding, if the fi nish size of the workpiece is larger than If you enter the minimum specification diameter and set the target size, the correction grinding can be performed [Griding Wheel Replacement Interlock] in the main menu to with only [Correction] switch and the simple operations. [ON] (enable), the replacement lamp and buzzer notify you when the minimum diameter is reached, and the next "cycle 　●2 Cycle skip start" is skipped automatically. When returning to automatic grinding after dimensional cor- 　●5 Infeed Retract During Automatic Cycle rection, if you keep pressing the [Cycle Skip] switch, it will move rapid to just before the fixed size position and stop, If you press the [Starting Position Return] switch, it temporar- and when you release the switch, it will be automatically in- ily reverses the infeed. When the wheel becomes dull during feed to the corrected fi xed size position with the fi ne grinding the grinding of diffi cult-to-cut materials such as carbide, you mode, which minimizes the time loss. don't have to stop the automatic cycle by temporarily re- tracting the wheel. 　●3 Repeat dressing This repeats the stroke at the preset dressing position. *Shown with options [Grinding Head Jog Feed] lever can feed the wheel for dress- ing. This function is used mainly to remove the runout of a wheel after it is replaced with new one. 7 8

IGM Series CNC Precision Internal Grinding Machine IGM2TNCⅢ Specifi cations Item Unit IGM2MB IGM15EX IGM15NC IGM15NC -2 IGM15NC -2B IGM2TNC Grinding hole diameter mm φ6～200 φ6～150 φ6～100 φ6～150 φ30～200 Grinding stroke mm max200 max125 max200 High-precision grinding of the tapered face Swivel on the table mm φ600 φ420 by swiveling the work spindle by 0 to 15° (manual operation) Swivel in the chuck cover mm φ350 φ260 φ350 Height from the bottom of the frame to Interactive software is used. mm 1110 1000 1050 1070 the center of the chuck Horsepower of wheel spindle and work Wheel Main spindle motors are increased from the Maximum travel distance mm 230 170 300 360 230 spindle previous model of IGM2TNC. Grinding feed speed mm/min 0.2～4 0.001～10000 functions infeed It supports straight workpieces up to 1000 (X axis) Rapid feed speed mm/min 500 10000 16000 10000 mm length (consult Okamoto) Table Maximum travel distance mm 500 510 500 longitudinal Grinding feed speed mm/min 0.1～15000 10000 0.001~10000 10000 feed (Z axis) Rapid feed speed mm/min 20000 10000 16000 10000 Interrupt dressing during cycle operation, cycle pause, and infeed-retract are avail- Minimum X axis mm φ0.0001 increment Manual-like able. Z axis mm 0.001 0.0001 operation Work Spindle Revolution Speed min−1 50～1200 100～850 50～400 Work spindle swivel angle deg. －5～30 －5～15 0～15 For main spindle kW 1.5 1.8 3.0 For wheel spindle kW 3.7 4.5 5.5×2 3.7 Motor For X axis kW 0.75 1.2 2.2 1.2 For Z axis kW 3 1.2 2.2 1.2 Power requirement kVA 16 12 18 22 15 (Including optional coolant unit) Small Vertical Internal Grinder Floor space requirement 2450×2249 2525×3292 2500×1940 3655×3242 (width x depth x height) mm 2525×3092×1786 (including optional coolant unit) ×1848 ×1786 ×1600 ×1785 IGM1V Net weight kg 3000 2600 2800 4500 5400 Power requirement, fl oor space requirement, and others are subject to change without notice. Compact and High Performance Required air source (standard specifi cation): 0.4～0.6 MPa, 300～400 L/min We developed compact vertical internal grinding machines suitable for medium-lot mass production, such as automotive parts. High-Level Software (standard on EX and NC ) ■ Correction grinding Interrupt function during cycle operation High productivity provides product cost reduction ■Space-saving with 840-mm width If you want to perform additional grinding after the automatic Interrupt dressing, infeed retract and cycle end are available. ■ grinding is completed, you can quickly approach the air cut position Stable accuracy even during mass production grinding and perform grinding in fine grinding mode, so time loss can be minimized. Wheel spindle load meter, work spindle & 1. Small Footprint wheel spindle inverter, additional components We reviewed the mechanical components in detail on the premise that the width should be within 1 m, and achieved 840-mm width. Automatic dressing on wheel replacement (for mass production) 2. High effi ciency grinding [cycle time improvement] In addition to the initial truing, The vertical feed is equipped with a high-speed approach with a table if you want to repeatedly use speed of 15 m/min and a high-speed function with a table speed of 490 the same specification wheel strokes/min (stroke width of 2 mm), greatly shortening cycle time. Which for mass production, it can contributes to product cost reduction. automatically perform the wheel for 3. Fully enclosed model that supports the truing when you replace the ed robot d. ulat e ic equipp rt is robot usage (robot is optional). wheel. al a ent ertic rem of n 4. Maintenance Parts number display all vm measu on tio S rnal operati ent→ Correc exte inuous m eplace ment→ In consideration of a production environment, all ont C iece r re orkp →Measu maintenance operations can be done from the Truing amount W hing Was front side of the machine. Wheel spindle revolution meter Wheel spindle load meter Work spindle revolution (For 15NCⅢ-2, it is displayed 9 separately on the operation panel.) 10

IGM Series Standard accessories Outline drawing Item IGM2MB IGM15EX IGM15NC IGM15NC -2 IGM15NC -2B IGM2TNC IGM2MB IGM15EX 15NC X-axis (infeed axis) closed loop model － ○ ○ ○ ○ － Wheel spindle and X-axis ball screw oil-chilled － － － ○ － － 120 862 950 Holder integrated type wheel spindle 20000 min-1 (oil mist type) ○ ○ ○ － ○ ○ 950 Oil mist lubrication unit (micro oil supply type) & drip-feed verifi er ○ ○ ○ ○ ○ ○ 100 Sleeve type grinding wheel spindle 10000min-1, 20000min-1 － － － － ○ － 26 High frequency spindle 10000min-1, 20000min-1 － － － ○ － － Inverter for high frequency spindle － － － ○ － ○ Wheel spindle AC spindle motor － ○ ○ － ○ ○ Work spindle AC servo motor － ○ ○ ○ ○ ○ Tool nose radius correction － － ○ ○ ○ ○ 10-Face grinding, no keyboard, straight & end face grinding model － ○ － － － － 930 10-Face grinding, with keyboard + G code input － － ○ ○ ○ ○ Dressing coolant, center coolant － ○ ○ ○ ○ ○ IN 555 Table washing nozzle － ○ ○ ○ ○ － Dust collection port － ○ ○ ○ ○ － LED light inside the cover － ○ ○ ○ ○ － Main spindle shift base － ○ ○ ○ ○ － Wheel spindle load meter ○ ○ ○ ○ ○ ○ Work spindle revolution meter ○ ○ ○ ○ ○ ○ IGM15NC -2 IGM15NC -2B Cycle time display / components count display － ○ ○ ○ ○ ○ 912 Small Vertical Internal Grinding Machine IGM1V 950 120 Specifi cations Optional accessories 400 Item Unit IGM1V Item 363 Swivel mm φ200 With magnetic separator, oil skimmer - processing capacity: 40 l/min Grinding inner diameter mm φ6～100 Coolant Cyclone fi lter, coolant temperature automatic regulator Capacity Grinding length mm 100 unit Oil mist collector (with mist suction port stand) OKB-10 Grinding stroke mm 100 High frequency wheel spindle Travel distance mm 200 3288 Wheel spindle 20000 Air drive unit for power chuck -1 (High frequency spindle) min (option:10000～60000) Power chuck X axis (longi- Positioning speed mm/min φ10000 Workpiece mounting check 930 tudinal axis) Minimum increment mm φ0.0001 Workpiece dedicated jaws (parent-child jaws) Travel distance mm 250 Z axis Colet type quill 555 (vertical axis) Positioning speed mm/min 15000 Magnet with dedicated spindle (carbide spindle) Minimum increment mm φ0.0001 Center taper MT MT　NO.6 Work light (LED light) Work head Rotation speed min-1 10～2000 Inner diameter direct sizing device Wheel spindle kW 3.8(option:3.8～4.6) Workpiece delivery device Main spindle kW 3.7(FANUC) Dressing coolant unit Unit: mm Motor Work head feed (for X axis) kW 1.0(FANUC) Table washing nozzle IGM2TNC Depth Depth Work head feed (for Z axis) kW 2.7(FANUC) (machine Air blow for chuck washing Width installation (including Height Coolant unit pump W/P 180/2 width) coolant unit) Auto shut down function Power requirement kVA 20 R Signal tower 3 colors 85 IGM2MB 2450 1361 2050 1848 0 Floor space width x depth x height mm 840x2760 (including coolant requirement unit)x20000 Mounting checker IGM15EX Weight Net weight kg 3800 Rotary dresser 1860 3092 IGM15NC 2525 1786 Automatic open/close door (front, left side) Robot peripherals IGM15NC -2 2010 3292 Standard accessories ① Small vertical articulated robot, double-hand model IGM15NC -2B 2500 1941 3020 1560 External measurement by electric micrometer Item ② ③ Workpiece washing IGM2TNC 3655 2010 3242 1785 Full-enclosed cover ④ Stocker: workpiece number maximum 1000 pcs NC unit FANUC 50 Pieces/pallet x 20 pallets Graphic interactive software High frequency spindle (20000 min-1) Oil mist lubricator Diamond tool (single-point: 2 pcs) Foundation bolts and plates Necessary tools (with tool box) 11 12 1600 1150 1110 1040 800 1060 3118 840 602 800 1108 151 100 1361 45 400 1240 223 1289 498 1744 837 395 2010 887 Ｎ１０ 1600 1040 800 151 222 1139 498 395 1860 837

IGM Series Optional accessories Wheel Spindle Type and Grinding Hole Diameter Item IGM2MB IGM15EXⅢ IGM15NCⅢ IGM15NCⅢ-2 IGM15NCⅢ-2B IGM2TNCⅢ Sleeve type wheel spindle Peripheral speed:1885m/min(maximum wheel diameter) 　 1．Coolant unit Wheel Rotation Standar d wheel Standa rd quill Approximate grinding spindle speed (min-1) dimension diameter ×length whole diameter 　 1） with magnetic separator B-7B-A 10,000 φ45×20 φ27×58 φ60～φ80 　 2） with magnetic separator and paper fi lter 13,000 φ25×15 φ16×40 φ42×60 with magnetic separator, paper fi lter and coolant B-23M 16,000 φ25×15 φ16×40 φ28×42 　 3） temperature automatic regulator 20,000 φ25×15 φ16×40 φ20×28 with magnetic separator, paper and cartridge fi lter, and 3. Sleeve type wheel spindle B-32M 30,000 φ20×15 φ14×32 φ14～φ20 7.1 Three-jaw scroll chuck 7.2 Four-jaw independent chuck 　 4） GS-5 40,000 φ8.5×8 ） ） φ5×25 φ8～φ17 coolant temperature automatic regulator 60,000 φ6.5×8 φ5×25 φ6～φ11 2．Sleeve type wheel spindle (high frequency spindle, mist lubrication type) Holder integrated type wheel spindle (mist lubrication type) 　 1） OH-10MB（10000min−1） Standard Peripheral speed:1885m/min(maximum wheel diameter) 　 　 Wheel Rotation Standard wheel Standa rd quill Approximate grinding 　 2） OH-20MB（20000min−1） Standard spindle speed (min-1) dimension diameter ×length whole diameter −1 OH-06M 6,000 φ100×40 φ40×100 φ80～φ120 　 3） OH-30MB（30000min ） OH-10M 10,000 φ60×30 φ27×80 φ60～φ80 　 4） OH-40MB（40000min−1） OH-15M 15,000 φ40×25 φ22×70 φ35～φ60 　 5） OH-50MB（50000min−1） OH-20M 20,000 φ30×25 φ16×50 φ20～φ35 OH-30M 30,000 φ20×15 φ14×40 φ14～φ20 　 6） OH-60MB（60000min−1） 7.4）Diaphragm chuck 7.5）Collet chuck OH-40M 40,000 φ15×10 φ10×25 φ8 ～φ17 3．Sleeve type wheel spindle (mist lubrication type) OH-60M 60,000 φ10 × 8 φ6×20 φ6 ～φ11 　 1） GS-5 （60000min−1、40000min−1） Holder integrated type wheel spindle (grease lubrication type) 4,5. Holder integrated type Peripheral speed:1885m/min(maximum wheel diameter) 　 　 2） B-32M（30000min−1） wheel spindle 　 Wheel Rotation Standard wheel Standa rd quill Approximate grinding spindle speed (min-1) dimen sion diameter ×length whole diameter 3 B-23M 　 ） −1 −1 −1 OH-10G 10,000 φ60×30 φ27×80 φ60～φ80 （20000min ,16000min ,13000min ） OH-15G 15,000 φ40×25 φ22×70 φ35～φ60 　 4） R-7B-A（10000min−1） OH-20G 20,000 φ30×25 φ16×50 φ20～φ35 4．Holder integrated type wheel spindle (grease lubrication type) OH-30G 30,000 φ20×15 φ14×40 φ14～φ20 OH-40G 40,000 φ15×10 φ10×25 φ8～φ17 　 1） OH-10G（10000min−1） 7.6）Finger chuck 7.7）Diaphragm fi nger chuck OH-50G 50,000 φ10× 8 φ6×20 φ6～φ11 　 2） OH-15G（15000min−1） High frequency wheel spindle 　 3） OH-20G（20000min−1） Peripheral speed: Used at 2000 m/min or less 　 Wheel Rotation Standard wheel Standa rd quill Approximate grinding 　 4） OH-30G（30000min−1） spindle speed (min-1) dimen sion diameter ×length whole diameter −1 OH-10MB 10,000 φ60×30 φ27×80 φ40～φ120 　 5） OH-40G（40000min ） OH-20MB 20,000 φ40×25 φ22×70 φ20～φ80 　 6） OH-50G（50000min−1） OH-30MB 30,000 φ30×25 φ16×50 φ14～φ35 5．Holder integrated type wheel spindle (mist lubrication type) OH-40MB 40,000 φ20×15 φ14×40 φ8～φ20 OH-60MB 60,000 φ15×10 φ10×25 φ6～φ17 　 1） OH-10M（10000min−1） 7.8）Gear chuck 8. End face grinding device 　 2） OH-20M（20000min−1） Standard Standard Standard Standard IGM15NC -2 　 3） OH-30M 30000min−1 Autoloader supporting model (optional) （ ） 　 4） OH-40M（40000min−1） 　 5） OH-60M（60000min−1） 6．Sleeve type wheel spindle holder 7．Various chucks *specifi cations shall be selected depending on the workpiece. 　 1） Three-jaw scroll chuck 　 2） Four-jaw independent chuck 　 3） Microcentric chuck 　 4） Diaphragm chuck 　 5） Collet chuck 　 6） Finger chuck 9. Steady rest (IGM2TNCⅢ) 16. Automatic programming software EDELAC Win 　 7） Diaphragm fi nger chuck 　 8） Gear chuck 　 9） Various power chucks 　 10） Air drive unit for power chuck 8. End face grinding device 9. Steady rest 10. Dresser coolant system Standard Standard Standard Standard 11. Work spindle nc swiveling, minimum increment: 0.00001° 12. Graphic interactive software for setting the work spindle nc swivel angle 13．Work spindle rotation constant control 14．Simultaneous 2-axis taper and contour grinding software 15．Wheel form grinding software (taper, free shape) 16．Automatic programming software EDELAC Win 17．Automatic shut down system 18．Direct sizing device 19．Rotary dresser 20．Signal light tower 21. Work light Standard Standard Standard Standard *Some of the above optional accessories need to be discussed before installation. 18. Direct sizing device 19. Rotary dresser 13 14