Rafamet UFD 140 cnc Portal Wheel Lathe

Rafamet UFD 140  cnc Portal Wheel Lathe

ROLL THROUGH FRICTION ROLLER DRIVE
BASIC SPECIFICATIONS
Range of wheel tread diameters
Maximum wheelset weight
Available multi track gauge version
PURPOSE

The UFD 140 N Portal Wheel Lathe is a CNC double saddle special purpose lathe designed for reprofiling of wheels used in rail vehicles. Thanks to optimised design features and high power of main drive the machine tool ensures productive machining of solid monoblock wheels and wheels with tyres of both used and new wheelsets. The friction roller drive allows to avoid notches on wheel surface which may expand to the fatigue damages of the wheels. The wheelsets can be provided with outboard axle boxes, gears installed between the wheels, or brake discs. The wheelset is rolled onto the built in wheelset elevator along rails and automatically centred and clamped between the centres and the friction drive rollers three rollers are attached to each wheel. The machine tool main structure is made in the form of a portal enabling wheelsets unloading to its rear side in roll through flow. It is also possible to unload the wheelsets to the machine front side. The main drive is powered by four AC motors of continuously variable rotation rates and digitally controlled in master slave system.
The UFD 140 N Portal Wheel Lathe is capable of performing the following operations
Turning of wheel profile according to technological program
Wheel rim inner facing
Turning of tyre in order to remove retaining ring
Wheel rim outer facing
Turning of limit machining groove
Turning of wheel centre

Wheel mounted brake disc facing
Axle mounted brake disc facing fixed between the wheels
MAIN FEATURES
Major body elements made as extremely rigid, heavily ribbed box type high grade iron castings in the form of portal guaranteeing the best dumping of vibrations produced during cutting process and excellent chip evacuation
Main drive from four friction rollers individually powered by AC motors of infinitely variable rotation rates and digitally controlled in master slave system
Automatic and reliable profile wear measurement using touch type measuring heads laser based measurement as option
Productive machining of narrowed economical wheel profiles
Operation in roll though or roll in roll out system
Versatile equipment and wide programming capabilities facilitate easy machining of unusual wheel profiles.
STANDARD EXECUTION
Portal, two tailstocks each with 60 90 deg. centre and three drives with friction rollers
Saddles and quick change compound cutter for wheel profile machining with cassettes and cutting plates
Touch type wheel wear measuring heads
Wheelset elevator and centring device
Four 4 AC motors of infinitely variable rotation rates with digital controllers for main drive
Four 4 AC motors of infinitely variable rotation rates with digital controllers for feed drives
Latest SIEMENS SINUMERIK 840D is computer numerical control system with PLC
Anti slip system for friction drive
Control panel
Remote diagnostics system, fault diagnostics with text messages in users language and Help function
Program for machining of one type of basic or economical wheel profile
Profile gauge and master gauge for one type of basic wheel profile
HMI screen pages operator guidance during machining process
Electrical equipment and control cabinet
Hydraulic power system and lubrication system
Chip covers, chip chute and chip conveyor
Full enclosure of machine tool
Lighting of working zone
Stack light and buzzer indicating machine tool working condition
Spanners for machine tool operation and installation
Equipment for setting and fixing the machine tool on foundation
Calibration wheelset for machine tool measuring system
Operation and Maintenance Manuals
CE mark and EC declaration of conformity
ADDITIONAL EQUIPMENT
Special centres
Device holding outboard axle boxes
Device holding wheelset axle mounted gearbox
Cutters for wheel rim outer facing
Device and cutters for axle mounted and wheel mounted brake disc facing
Device for wheel centre machuning
Touch screen for main control panel
Additional programs for machining of basic and economical profiles
Wheelset database
Laser measuring heads for scanning of wheel profile
Equipment for tool retraction in case of power failure
Equipment for monitoring of profile cutters wear condition
Equipment for calibration of cutting tools
Mechanical chip crusher and chip bin
Dust and fume extraction system
system for monitoring of machining process
Wheelset turn table
Other upon request Wheelset geometry
Track gauge mm
Mіn. wheel tread diameter after machining mm
Max. wheel tread diameter before machining mm
Max. width of wheel rim 
Min. Max. length of wheelset axle
Max. weight of wheelset 
Machine tool parameters
Max. chip cross section for each saddle
Max. working feed rate mm min
Max. travel rate of saddles mm min
Number of main drive motors pcs 4
Total power of main drive motors
Total power installed standard execution
Machine tool overall dimensions and weight
Machine tool overall dimensions
Workshop floor surface demand 
Machine tool weight
Machining accuracies
Difference in diameters between two wheels of the same wheelset  
Radial run out of wheel tread mm
Axial run out of wheel inner faces mm 
Accuracy of profile machining mm 
Roughness of wheel profile surface after machining
Roughness of brake disc surface after machining
Another track gauge to be agreed upon. Available double track gauge version. Other lenqth of wheelset akles to be agreed upon. Wheel material steel Hardness