Mesin penggiling silinder - universal

KELLENBERGER Kel-Varia UR225-1500 1-2-6-7

Grinding diameter: 450 mm
Grinding length: 1,500 mm
Centre height: 225 mm
Control system: FAGOR

EQUIPMENT
-T1 500 mm grinding wheel diameter
-T2 400 mm grinding wheel diameter
-T6 internal grinding attachment
-T7 internal grinding attachment
-Spindle motor, water-cooled, 9.8 kW
-Marposs tool measurement system
-Active longitudinal positioning
-Kel-Set
-GAP monitoring on T1 and T2 by ELASO, contactless integration into the control interface
-GAP monitoring on T3/T4 via fluid sensor
-Semi-automatic balancing by ELASO, integrated into the control interface for T1/T2
-Tailstock: hydraulic, with fine adjustment +/- 150 µm
-Dressing device on subtable, workpiece spindle side
-Dressing device on subtable, tailstock side
-Dressing device on table top
-New service- and operator-friendly enclosure

SPECIAL FEATURES:
Workpiece spindle head with direct drive
*strongly recommended for non-cylindrical grinding
*Max. workpiece weight (overhung): 75 kg
*Max. workpiece weight (between centers): 150 kg
*water-cooled
*MK5 combined with short taper mounting acc. to DIN 55026
*Oriented spindle stop
*Fixed base
B axis with direct drive, centre height 225 mm
*Extremely torsion-resistant
*High positioning accuracy
*Resolution: °
*Water-cooled

MECHANICAL REFURBISHMENT:
-Complete machine overhauled according to Kellenberger measurement protocol
-New paintwork

Hydraulic unit new:
-Improved temperature control (oil cooler)
-Energy saving: only one pump, also not in continuous operation!
-Pressure monitoring
-Monitoring of water content in the hydrostatic oil (early detection of bellows damage)
Hydrostatic screw drive in X-axis
-Wear-free, as there is no contact in operation
-No loss of accuracy, even in long-term operation at full load at maximum speed
-Friction-free at low speeds
-No reversal jump in frictional force when changing direction
-Transmits the smallest rotational movements
-No stick-slip effect even at low speeds
-No fluctuations in frictional torque due to ball circulation
-Higher axial rigidity compared to ball screw drives
-Significantly better damping, resulting in improved workpiece surface finish and tool service life
-No vibrations due to ball circulation
-Suitable for high speeds and accelerations
-Cost-effective alternative to linear motors with higher accuracy and significantly lower heat generation
-Significantly lower power loss, preventing issues with chips on permanent magnets
-Much lower cooling requirements than linear motors

ELECTRICAL REFURBISHMENT:
-New, modern CNC CYLINDRICAL GRINDER control system with BEMA cylindrical grinding user interface
-Newly built electrical cabinet
-New drive technology
-Replacement of all electrical wiring
Pressure switches, etc.
-New absolute optical scales on X and Z axes
-New absolute rotary encoder (for B-axis)

Control System:

The grinding software consists of a base license and various options, which are available depending on the machine’s configuration.

Software base:
- External and internal oscillating grinding
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- External and internal plunge grinding
- External and internal face oscillating grinding
- External and internal face plunge grinding
- External and internal taper oscillating grinding
- External and internal radius grinding (radius dressed on wheel)
- Semi-automatic oscillating grinding
- Workpiece...

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