Modernized FRORIEP
A fully modernized FRORIEP floor-type horizontal boring and milling machine, model OFB 160, with a Fanuc 18i MB
Specifications
Description:
Longtravel (X-axis): 10000 mm
Vertical travel (Y-axis): 3150 mm
Ram stroke (Z-axis): 700 mm
Boring spindle stroke (W-axis): 1200 mm
Underslung ram stroke (W2-axis): 1200 mm
Boring spindle diameter: 160 mm
Spindle taper of milling head: ISO 50
Main motor power: 50 kW
Spindle speed range: 1.6 – 1000 rpm
Axis feed rate: 0 – 3 m/min
Axis rapid rates: 4 m/min
Total machine weight: 55 tons
Floor plate area (8 separate floor plates): 10.8 x 5.4 meter
Year of original manufacture: 1973
Year of CNC retrofit: 2019
A right-angled milling head permanently fitted to the underslung ram
A universal milling head to be loaded onto the main ram with a manual attachment changing system.
A (new in 2019) 2-axis rotary table fully integrated as a 6th and 7th axis.
New Fanuc 31i CNC system capable of controlling 7 axes, which two axes control the rotational and linear axes of the 2-axis rotary table.
A set of telescopic covers on the main bed on both sides of the column.
A flood coolant system with new pump and tank.
The original operator platform.
A set of 8 off T-slotted floor plates measuring 10.8 x 5.4 meter in total.
A full-length chip conveyor (new in 2009).
Description:
Load capacity: 20 tons
V-axis stroke: 1200 mm
Table surface: 2500 x 2000 mm
Rotational speed: 0.001 – 0.05 rpm
Linear feed rate: 2.5 – 150 mm/min
Rapid rate of V: 2 m/min
The machine axes are defined as follows:
Axis layout of basic machine | ||
Description of axis | Type of axis | Method of measurement feedback |
1. Long travel of column (X-axis) | Full CNC axis, with digital servo motor driving double pinion on rack through low-backlash drive train. | Motor encoder feedback |
2. Vertical travel of headstock (Y-axis) | Full CNC axis, with digital servo motor driving precision-ground ball screw through low-backlash drive train | Motor encoder feedback |
3. Axial stroke of ram (Z-axis) | Full CNC axis, with digital servomotor driving ballscrew thru low-backlash gearbox. | Motor encoder feedback |
4. Axial stroke of boring spindle (W-axis) | Full CNC axis, with digital servomotor driving ballscrew thru low-backlash gearbox | Motor encoder feedback |
5. Axial stroke of underslung ram (W2-axis) | Full CNC axis, with digital servomotor driving ballscrew thru low-backlash gearbox. | Motor encoder feedback |
6. Main spindle | Spindle motor driving boring spindle through headstock drive train | Rotary encoder feedback, with accurate spindle orientation for rigid tapping and feed/rev. |
7. Underslung ram milling head | Spindle motor driving milling head through ram drive train | Motor feedback only |
Basic axis layout of the machine, as taken from the original machine manual.
