Conventional Grinding Machines
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OMICRONConventionalUNiVERSAL Cylindrical GRiNDiNG Machines Precision Since 1936Made In Italy Robbi Group srl Via deN'Industna 7 37040 Veronella - VR Italia 39 0442 47700 39 0442 47966 robbi@robbispa.com www.robbispa.com

I Manufactured respecting The Traditional Italian Precision Mechanics • High standards of precision • Flexibility • Fast set-up • Ideal for processing components with very tight tolerances • Sturdiness and Stability: • Machine bed in normalised cast iron • Grinding wheel spindle mounted on solid bronze bushes The Most Appreciated by Professional Rebuiders The range of Conventional Universal Cylindrical Grinding is composed of : Model R - Light Version Model E - Suitable for heavier work

Conventionals Traditional Mechanics Assisted by Incremental Linear and Display Units The following parameters are set on the touch screen panle encoder: • workhead and wheelhead speeds • automatic cycle parameters , for example: • dwell time at reverse • number of spark-out passes. Manual Handwheel for Table and Workhead Feeds Division on diameter (mm) Main handwheel 0,01 Micrometric handwheel 0,001 Automatic Zero

Swivel on either side Automatic traverse min._ Manual feed for handwheel revolution Internal center taper 4 MT Rotation speed (inverter) WoRKiNg Feeds Automatic feed at each reversal Rh table Wheel feed for handwheel revolution Handwheel division values Internal GRiNDiNg Attachment 1150 mm from workhead spindle nose

Grinding length max. 630 1030 1530 mm Manual feed for handwheel revolution 13 mm Internal center taper 4 MT Rotation speed (inverter) Standard Equipment WoRKiNg Feeds_ Automatic feed at each reversal Rh table Wheel feed for handwheel revolution Handwheel division values 1150 mm from workhead spindle nose Without Inverter

Base Structure in normalised and stabilised cast iron with large ground guides. On all the lower part of the perimeter are situated the recesses for machine levelling. Table The table is manufactured in two parts, both are in normalised and stabilised cast iron. Lubrication is assured by a constant oil flow distributed over the complete length of the table. The upper part of the table is swivelable in the two directions making it suitable for grinding tapered workpieces. EQUiPMENT AND ELECTRiCAL PLANT The cabinet houses all the electrical / electronic components, PCL control, axis motor...

Automatic table longitudinal movement hydraulic cylinder V Large ground guides, accurately hand scrapped to permit a better sliding V Incremental linear encoder to display the position V Micrometric device with dial gauge for taper control V w External diamond dresser on the tailstock V LU Internal diamond dressing device positioned on the table V Electrical Plant Cabinet q The internal temperature of the cabinet is controlled by an air-conditioning_ unit. tabel and wheelhead movement V tailstock O Oil-Air Heat Exchanger V Automatic opening and closing...

Coolant equipment complete with pump, electrical equipment, tank, pipes and nozzle V Magnetic and paper roll O Coolant Filters Paper roll O Magnetic O One Grindind Wheel V Flange V Balancing arbor V Extractor V Set of levelling screws and plates O 2 cloth bellows for table guide protection V service spanners V hexagonal spanners V Oil for guide lubrication 5 kg O Instruction manual V Axis digital readout X wheel head Z table Table manual swivelling system for taper grinding with dial gauge Wheel head Wheelhead slides by means of a...

^ Positioning Precision The structure is composed of 2 carriages in normalised cast iron. The upper carriage, where the hydrodynamic spindle is located, has a manual stroke positioning to optimise the use of the grinding wheel An air flow facilitates the positioning The lower carriage slides by means of a recirculating ball screw with double preloaded nut, on linear motion guide with roller cage. The greasing of the guides is timed. The lower carriage has two movements: • fast approach by means of an hydraulic cylinder • working feed by means of a steel screw and bronze preloaded nut The...

Dead and Live Spindle , Positioning Facilitated by an Air Flow The structure in normalised, stabilised and well ribbed cast iron, supports the workpiece weight and the force generated by the grinding operation. Equipped with dead and live spindle. The spindle rotates: • on high precision ball bearings, guaranteeing restricted tolerance and maximum rigidity in the working; • by means of a AC motor and the rpm adjustments are programmable on the operator panel; • may be intermittently manual or automatic. The workhead positioning on the table is facilitated by an air flow. Workhead rotates 90...

Internal Grinding The machine ( on request ) may be equipped with Internal Grinding Attachment, which may be mounted in two versions: • drop down over wheel head • on rear side of wheel head. Internal Grinding Spindle mounted on Rear Side of Wheel Head Robbi Group offers a large range of internal grinding spindles that can be : • belt driven spindles up to 42,000 RPM • electric spindles up to 120,000 RPM Large Range of Quills and Attachments are Available Internal Grinding Spindle Mounted Drop Down over Wheel Hea

Customizable According l to the Process Required_ A well dressed grinding wheel is crucial to obtain a high-performance and high-quality grinding process The wheel dresser for external grinding wheels can be mounted on the: • table • tailstock The wheel dresser support can be: • fixed • tilting hydraulic

At Your Service Since 1936 Robbi has operated in the machine tool market since 1936 and specialise in the manufacture of machines tailored to meet the more demanding needs of the customer’s complexed and more specialised demands. Whilst maintaining competitive prices, Robbi have ensured their machines have stability and precision. Robbi grinding machines, use the best technology and the most robust and reliable components available on the market in their build programme. Robbi have a commitment to assist and help, proactively, its customers to ensure they maximise the efficiency of the...