- 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 )
Internal Grinding Machine Omicron IGR 250
Internal Grinding Machines
Download 808.92 KB 2138 downloads| 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.