The invention discloses a numerical-control underfloor wheel lathe
control system, which comprises a
numerical control system PLC, an NCU unit and a human-
machine interface HMI, and is characterized in that: the NCU unit is a central
control unit of the
numerical control system PLC; the NCU unit is connected with the
numerical control system PLC through an
Ethernet; the human-
machine interface HMI is a login interface, realizes information loading and unloading functions through data communication with the NCU unit, communicates with the
numerical control system PLC by means of the NCU unit and controls
machining of a locomotive wheelset by means of a lathe and equipment diagnosis of the lathe; and the
numerical control system PLC comprises a wheelset measuring module, a cutter compensation adjustment module, an automatic turning repair module and an automatic maintenance module. The invention further discloses an application method of the numerical-control underfloor wheel lathe
control system. The numerical-control underfloor wheel lathe
control system and the application method thereof have the advantages of reasonable design and high practicability, the turning
repair method of the locomotive wheelset is simple and convenient in operation, the problem that the highly-skilled personnel is needed for maintenance is avoided, and a pre-maintenance point and real-time detection are set, thereby realizing regular maintenance of the lathe, and reducing
failure rate of the lathe and the time required for maintenance.