The UDA 125 N Portal Wheel Lathe is a CNC double-saddle special-purpose lathe designed for reprofiling of wheels and brake discs used in rail vehicles. The machine tool ensures productive machining of solid (monoblock) wheels and wheels with tyres of both used and new wheelsets.
The machine tool is provided with radial or axial wheelsets clamping system.
The wheelsets can be equipped with outboard axle boxes, gears installed between the wheels and brake discs.
The wheelset is rolled onto the built-in wheelset elevator along rails, automatically centred and clamped between the centres and the driving dogs installed on spindle face plates.
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 two AC motors of infinitely variable rotation rates and digitally controlled in master / slave system.
Max. rate of continuously variable rotation of main drive £º
Profile machining
rpm
45
Brake discs facing
rpm
70
Power of each main drive motor
kW
2¡Á40/50
Total power installed (standard execution)
kW
140
Machine tool overall dimensions£º
Length
mm
8400(2)
Width
mm
3825(2)
Height
mm
2840
Workshop floor surface demand
mm
10500¡Á6000
Approximate weight of machine tool
¡Á10kW
46(2)
Machine tool accuracies
Difference in diameters between two wheels of the same wheelset
mm
¡Ü0£¬15
Radial run-out of wheel tread
mm
¡Ü0£¬10
Axial run-out of wheel inner faces
mm
¡Ü0£¬10
Accuracy of profile machining
mm
¡Ü0£¬15
Roughness of wheel profile surface after machining
um
R=5¡Â20
(1) - Another track gauge to be agreed upon. Multi-gauge version available. (2) - For track gauge of 1435 mm and standard execution. (3) - The height of machine tool base is zero reference. (4) - Lifting height of machine tool measuring device at moving zero position.
