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Февраль 28, 2017

REPAIR AND RETROFITTING, DEVELOPMENT AND MANUFACTURING OF NEW WHEELSET LATHES

RAILWAY WHEEL LATHE

REPAIR AND RETROFITTING, DEVELOPMENT AND MANUFACTURING OF NEW WHEELSET LATHES

The core business TURNING WHEELSET TREADS of MPP AVIS is repairing and retrofitting machine tools, and the development and manufacture
of new lathes for machining locomotive and railroad car wheelsets. REPAIR AND RETROFITTING, DEVELOPMENT AND MANUFACTURING OF NEW WHEELSET LATHES

The consumers of our products are such enterprises as Illicha MMK in Mariupol, OJSC Turboatom, and Georgian Railways.

WE HAVE THE EXPERTISE AND KNOW WHAT TO OFFER!

To reduce the risk of locomotive derailment and damage of railway tracks, wheelset turning should be performed regularly. Doing this in time increases the wheelset service life. Presently, we have developed and put into quantity production lathe carriages for modernising wheelset lathes
UBB112, UBC125, UBC150, 1836, and other machine tools.

The carriages are installed instead of old hydraulic or mechanical ones. They are equipped with the Sinumerik 840Dsl NC system, linear guideways HIWIN and laser gauges for measuring the wheelset profile.

Retrofitting the machine tools implies the installation of a variable-frequency spindle drive, new electric cabinets and a new hydraulic power unit.

During 2011-2016, AVIS retrofitted six wheelset lathes for the Georgian Railways. Machine tool 1836.10 was also retrofitted for the Luhansk Diesel Locomotive Plant.

We can also offer new lathes for machining wheelsets with roll-out (KS905F3) and with no roll-out for commuter trains and locomotives (KS906F3 and KS909F3).

Lathe KS905F3, as regards its parameters, is close to UBF112N but it is much cheaper. It has two carriages fitted with a Siemens NC system. The wheelset is rotated with grippers that clamp the inner part of wheel treads (the force is applied radially). The grippers are of unique design requiring
no readjustment for the diameter of machined wheelsets. The wheelset is positioned with a hydraulic jack.

MPP AVIS is moving forward, looking for new ways for further development and invites new business partners to cooperate.

RAILWAY WHEEL LATHE КS905F3 – The core business TURNING WHEELSET TREADS

The model KS905F3 machine tool is a special wheel lathe for turning wheelset treads over the range of wheel rolling circles of 840-1120 mm (or 840-1250 mm in a special design version) for a railway track gauge of 1520 (1524) mm.

RAILWAY WHEEL LATHE

The machine tool is equipped with two lathe carriages for simultaneous machining of the left-side and rightside treads of a wheelset. Each carriage is fitted with a mechanism for automatically determining the geometric parameters of the machined surfaces.

A Siemens NC system controls the machine tool. The special features of this system provide for operation of the left-side and right-side carriages simultaneously, though independently in time.

RAILWAY WHEEL LATHE

The treads on both sides are machined using optimal cutting parameters and number of passes. Such an approach reduces overall wheelset machining time. Our unique proprietary software enables determining cutting parameters in a fully automatic mode.

The machine tool operator has the option of adjusting the machining parameters provided by the control system. After such adjustment, the control system checks whether the input data are admissible.

Automatic calculation of the cutting depth for the left-side and right-side carriages allows minimising the thickness of the metal removed for both sides to ensure equality of rolling circles of wheelset treads after machining.

RAILWAY WHEEL LATHE

The operator can adjust the cutting depth to account for defects in the machined surfaces such as flat spots, cracks and others, which are not detected automatically. In so doing, the rolling circles of wheelset treads are machined to equal dimensions.

■ The overall dimensions of the lathe allow installing it in the working space of machines models KZh1836, UBB112, and others.
■ Creating any set of profiles by agreement with the Customer.
■ Automatic measurement of the geometric parameters of wheel profiles and of their actual diameter.
■ Machining mode – automatic and semiautomatic.
■ Siemens NC machine tool control system.
■ Standard cutting tools – by agreement:
— Double-cartridge tool holder С1866-281112.287 (L and R)
or
— Double-cartridge tool holder R/L175.32-5055M made by SANDVIK Coromant.
■ The wheelset is rotated with grippers that clamp the inner part of the treads (the force is applied radially).
■ Machining is carried out simultaneously with two carriages.
■ The grippers are of unique design requiring no readjustment for the diameter of machined wheelsets.
■ A unique mechanism for lifting automatically the wheelset to the centre line is used. It does not extend beyond the frame parts.

UNDERFLOOR WHEEL LATHE KS950F3 FOR TURNING LOCOMOTIVE WHEELSETS WITH NO ROLL-OUT FROM UNDER A LOCOMOTIVE

Machine tool model KS950F3 is a special-purpose underfloor wheel lathe intended for turning locomotive wheelsets with no roll-out from under a locomotive. The range of diameters of wheel rolling circles is unlimited, with the rail track width of 1520 (1524) mm.

UNDERFLOOR WHEEL LATHE

The overall dimensions of lathe KS950F3 allow installing it in the underfloor space of machine tool model KZh20 made by other manufacturers. The wheelset is rotated in the lathe by electric motors with the help of friction rollers.

The model is equipped with two lathe carriages for machining simultaneously the left-side and right-side wheelset treads. Each carriage is fitted with a mechanism for automatically determining the geometric parameters of the machined surfaces.

UNDERFLOOR WHEEL LATHE

A Siemens NC system controls the machine tool. The special features of this system provide for operation of the left-side and right-side carriages simultaneously, though independently in time. The treads on both sides are machined using optimal cutting parameters and number
of passes. Such an approach reduces overall wheelset machining time.

Our unique proprietary software enables determining cutting parameters in a fully automatic mode. The machine tool operator has the option of adjusting the machining parameters provided by the control system. After such adjustment, the control system checks whether the input data are admissible. Another option is the delivery of software for maintaining machining logs. The log contains information about the locomotive, the number of the machined axle, the date and time of machining, and the geometry of the rolling circle profile after machining.

UNDERFLOOR WHEEL LATHE

Automatic calculation of the cutting depth for the left-side and right-side carriages allows minimising the thickness of the metal removed for both sides to ensure equality of rolling circles of wheelset treads after machining. The operator can adjust the cutting depth to account for defects in the machined surfaces, which are not detected automatically, and for the difference in the rolling circles for axles of one boogie or locomotive. This
ensures equality of rolling circles of wheelset treads and their admissible deviation for a boogie and locomotive after machining.

■ The overall dimensions of the lathe allow installing it in the underfloor space of machine tool model KZh20 made by other manufacturers.
■ Creating any set of profiles by agreement with the Customer.
■ Automatic measurement of the geometric parameters of wheel profiles and of their actual diameter.
■ Machining mode – automatic and semiautomatic.
■ Siemens NC machine tool control system.
■ Standard cutting tools – double-cartridge tool holder С1866-281112.287.
■ The wheelset is rotated with four friction rollers fitted with individual variable-frequency electric drives.
■ Machining is performed with two carriages simultaneously.
■ A unique design for clamping friction rollers to the machined wheels is used.
■ A system of auxiliary conveying is used for machining wheelsets of light-weight locomotives.
■ The lathe is equipped with a removable chip transporter.

MPP AVIS is moving forward, looking for new ways for further development and invites new business partners to cooperate

Call us to find out detailed technical specifications of our products.
Contacts: +38 (06264) 5-57-61, +38 050 0319008
e-mail: office@avis.in.ua
www.avis.in.ua
14-A Vosmikvartirnaya ul., Kramatorsk, Ukraine, 84313

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