OMICRONSemi AutomaticUNiVERSAL 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 [email protected] www.robbispa.com

Automated and Economic Grinders Automatic and Manual Operations Grinders • Excellent versatility and high quality standards • Extremely fast and precise also when processing complex components • Easy preset of working diameter • Single or small batch production workpieces, with the ability to function both in manual or automaticmode • Automatic compensation of diameter after dressing • In-process measuring gauge and gap control system (on request) Standard Operator Panel

Operator Panel (Optional) Parametric Screens • Wheelhead and table position visualized on operator panel • Possibility to program up to 12 different diameters, on the same grinding cycle • Possibility to update the operator panel, with the correction of each diameter • Semi automatic grinding cycle, with stop of the grinding wheel feed once the programmed diameter has been reached • Automatic grinding wheel dressing cycle with compensation of all the grinding dimensions X Movement of wheel head V V Z Movement of table V V Selection of the electronic handwheel division Working Cycles with...

Complete Closure - Type B Remote HandWheel (Optional)

Grinding length Height of centers over table WORKiNG CAPACiTY .Weighto.n.centeisj Cantilever weight1 Table (Z - Axis) .Automatlctabletraverse. Swivel on either side mi: Wheel Head (X - Axis)_ Width Working Feeds_ Minimum programmable feed Internal Grinding Attachment Electric motor 1150 mm from workhead spindle nose

Essential Repair - C Type

Height of centers over table180 2303mm Internal center taper 4 5 MT Rotation speed (inverter) Lateral Remote Handwheel WoRKiNg Feeds(mm) Minimum programmable feed 0,001 Mi! 7 1150 mm from workhead spindle nose

Essential Repair - C Type Essential Repair - C Type (rear view)

Internal center taper 5 MT Rotation speed (inverter) 600-1250 rpm WoRKiNg Feeds(mm) Minimum programmable feed 0,001 Coolant pump Without Inverter

Externalcenter_taperi Swivei Internal center taper 6 MT Rotation speed (inverter) 600-1250 rpm WoRKiNg Feeds(mm) Minimum programmable feed 0,001 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 controllers...

Automatic table longitudinal movement re-circulating ball screw with preloaded nut ^ Incremental linear encoder to display the position O i- Micrometric device with dial gauge for taper control V Machines with distance between centers of more than 4000 mm, the swivelling is facilitated and v more precise with teh an air cushion system External diamond dresser on the tailstock V i/5 High frequency diamond roll (dressing wheels in CBN or PCD) O Internal diamond dressing device positioned on the table V Internal wheel dresser support, tilting hydraulic O Electrical Plant Cabinet...

Standard EQUiPMENT Coolant equipment complete with pump, electrical equipment, tank, pipes and nozzle Magnetic and paper roll Coolant Filters Paper roll wheel Balancing arbor hexagonal spanners . ... wheel spindle 5 kg guide 5 kg Instruction manual Axis digital readout X wheel head Z table with preloaded nut Z table Wheel head Wheelhead slides by means of a recirculating ball screw with double preloaded nut, on linear motion guide with roller cage. Hydraulic unit for tailstock control Pneumatic unit Centralized lubrication

Encloser Type A - Rounded • Complete Encloser • Elegant • Balanced Style Type B - Square • Complete Encloser • Functional • Essential Tipo C - Standard • Open Top • F

The structure is composed of two 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 brushless motor which moves the screw, may be controlled (on request) with a closed loop by the incremental linear encoder, which guarantees a positioning precision on the complete...

Dead and Live Spindle v 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 degrees...

Machine models PT6 and MT6, are supplied standard with Hydraulic opening / closure and micrometric correction of the cylindricity Machine models RT6 and ET6 are available in three different versions: • manual opening (standard); • hydraulic opening (on request); • hydraulic opening / closure and micrometric correction of the cylindricity (o

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