Robbi OMICRON IGR 600

INTERNAL GRINDING MACHINE IGR 600

  • Excellent versatility
  • High quality standards
  • Small batch production workpieces – and even one off workpieces – in manual or semi automatic modes.
  • Workpiece presetting is done only once, on machine set-up.
  • Extremely fast and precise even when processing complex components ( otion equipped with measurement devices or contact probes )
TECHNICAL SPECIFICATIONS IGR 250
Maximum internal grinding diameter capacity mm 250
Height of centres over table mm 180/230 ()
Max cantilever weight (150 mm from workhead spindle nose) kg 80
Maximum distance between headstock plate and grinding spindle attachment mm 1200
Maximum diameter of internal grinding spindle mm 120
Maximum table swivel deg +8°-4°
Table speed mm /min 0-4000
MOTORS IGR 250
Grinding wheel kW 4
Workhead kW 4
Hydraulic unit kW 0,75
WORKHEAD IGR 250
Rotation speed rpm 0-400
Internal centre taper MT 5
Self centering chuck diameter* mm 250
FACE GRINDING DEVICE IGR 250
Maximum grinding diameter mm 355
Grinding wheel diameter mm 125
Maximum swivel deg 10°
Grinding wheel motor kW 1,1
  • Control panel SIEMENS TP 700 for easy programming of grinding cycles
  • Wheelhead and table position visualized on operator panel
  • Programmable grinding cycles: plunge and pass
  • Program up to 12 different diameters, in a single grinding cycle
  • Possibility to update the operative panel, with the correction of each diameter
  • Manual 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
  • In-process measuring gauge and gap control systems (Option)

CNC & Semi Automatic versions availables

Versione PLC

Versione CNC

IN PROCESS MEASURING AND GAP CONTROL SYSTEM ( On Request)

  • Movement of the wheel head (axis X) in both automatic and manual
  • Movement of the table (axis Z) in both automatic and manual
  • Automatic wheel diameter compensation after dressing
  • Selection of the electronic handwheel division

AUTOMATIC GRINDING CYCLES, PLUNGE AND PLUNGE AND PASS WITH PARAMETERS:

  • Stock removal – rough and finish
  • Automatic increments – rough and finish, for pass grinding cycles
  • Automatic feeds – rough and finish, for plunge grinding cycles
  • Dwell – table inversion
  • Sparkout time
  • Sparkout pass

STANDARD EQUIPMENT

  • Coolant equipment complete, electrical equipment pump, coolant tank and nozzles
  • Controlled hydraulic dressing unit (diamond optional), assembled on the table
  • Set of levelling screws and plates
  • Cloth bellows for protection of table guides
  • Sliding doors
  • Set of service spanners
  • Set of hexagonal spanners
  • 5 Kg oil for guide lubricating
  • Instruction manual

EQUIPMENT

  • Facing device, hydraulically operated
  • Incremental linear encoder for micro positioning of wheelhead
  • Wheelhead and table automatic electronic feeds controlled by brushless motors
  • Re-circulating ball screw with preloaded nut for wheelhead and table movements
  • Prime SIEMENS TP 700 touch screen control panel
  • Anti-friction material on wheelhead guides
  • Table manual swivel system for taper grinding complete with dial gauge
  • Electric installation, in separate cabinet
  • Pneumatic unit
  • Centralised lubrication

PRECISION DEGREE
ROBBI grinding machines are built in accordance to the international precision Standards ISO 2433.
The table movement linearity is guaranteed  within   a maximum deviation of 0,002 mm/m.
Surface finish degree: 0,2 Ra µ (**).
The obtainable grinding roundness is ( with live spindle) 0,4 µ (**)

(**)  For a test workpiece ground in our factory during machine testing.