Train Wheel Borer
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Task-
Remanufacture and retrofit of a Snyder Wheel Boring Mill. The Vertical Ram and Machine table will be removed for
refurbishment. A new electrical control system will be designed and installed. The machine will then be tested prior
to shipment.
Remanufacture and retrofit of a Snyder Wheel Boring Mill. The Vertical Ram and Machine table will be removed for
refurbishment. A new electrical control system will be designed and installed. The machine will then be tested prior
to shipment.
Solution-
The following areas of the machine were addressed as part of the remanufacture and retrofit:
>Ram Rebuild.
>Table rebuild.
>Control system.
> Boring Bar Upgrade
Ram Rebuild
The ram was rebuilt to bring the ram centerline to its original location. The way surfaces of the ram will be
reworked to obtain parallelism between the way surfaces and the ram housing centerline. The way surfaces were
then plated to obtain the correct center distance. The column way surface was reworked to obtain flatness and
true running. All gibs and guide plates were reworked to obtain correct running clearances.
The following areas of the machine were addressed as part of the remanufacture and retrofit:
>Ram Rebuild.
>Table rebuild.
>Control system.
> Boring Bar Upgrade
Ram Rebuild
The ram was rebuilt to bring the ram centerline to its original location. The way surfaces of the ram will be
reworked to obtain parallelism between the way surfaces and the ram housing centerline. The way surfaces were
then plated to obtain the correct center distance. The column way surface was reworked to obtain flatness and
true running. All gibs and guide plates were reworked to obtain correct running clearances.
Table Rebuild
The table was rebuilt to correct for wear and alignment. The way surfaces of the table were reworked to obtain
parallelism between the way surfaces and the tabletop. Perpendicularity between the table and ram was also
corrected. The way surfaces were lined with “Turcite” to maintain the correct distances and provide a low friction
way surface. The bed way surface will be reworked to obtain flatness and true running. All gibs and guide plates
will be reworked to obtain correct running clearances.
The table was rebuilt to correct for wear and alignment. The way surfaces of the table were reworked to obtain
parallelism between the way surfaces and the tabletop. Perpendicularity between the table and ram was also
corrected. The way surfaces were lined with “Turcite” to maintain the correct distances and provide a low friction
way surface. The bed way surface will be reworked to obtain flatness and true running. All gibs and guide plates
will be reworked to obtain correct running clearances.
Control System
A complete new electrical control system was designed and installed. The new system was be based upon an Allen-
Bradley P.L.C. All machine limit switches, pushbuttons and indicator lamps were replaced along with all machine
wiring. Conduits and cable carriers were replaced as required. A new digital D.C. spindle drive was installed and
integrated to the existing spindle motor, which was refurbished. A new operator panel was provided and
repopulated with new components. The new system was interfaced to the measuring system in the same fashion
as is presently used.
A complete new electrical control system was designed and installed. The new system was be based upon an Allen-
Bradley P.L.C. All machine limit switches, pushbuttons and indicator lamps were replaced along with all machine
wiring. Conduits and cable carriers were replaced as required. A new digital D.C. spindle drive was installed and
integrated to the existing spindle motor, which was refurbished. A new operator panel was provided and
repopulated with new components. The new system was interfaced to the measuring system in the same fashion
as is presently used.
Boring Bar Upgrade
The boring bar system was redesigned utilizing the existing boring bar body. New threaded pinion drives were
designed and manufactured. The threads had a lead of 0.562” to provide the required extra tool stroke with the
same rack stroke. New tool holder blocks were designed and manufactured. They were made from tool steel,
hardened and ground. A replaceable threaded bush was be incorporated in the toolholders. This allowed
replacement when worn without replacing the whole tool holder. The tool holder design also allowed for a
cartridge type insert holder to be utilized. This further reduced the possibility of breaking the tool holder body in
the event of a crash.
The boring bar system was redesigned utilizing the existing boring bar body. New threaded pinion drives were
designed and manufactured. The threads had a lead of 0.562” to provide the required extra tool stroke with the
same rack stroke. New tool holder blocks were designed and manufactured. They were made from tool steel,
hardened and ground. A replaceable threaded bush was be incorporated in the toolholders. This allowed
replacement when worn without replacing the whole tool holder. The tool holder design also allowed for a
cartridge type insert holder to be utilized. This further reduced the possibility of breaking the tool holder body in
the event of a crash.
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Innovative
SYN-APS Corporation
Solutions
| Train Wheel Borer |
