Lesson 1Overview of CNC Milling Centre: Spindle, Axes, Table, Tool Changer, Enclosure, and Conveyor SetupThis part introduces the CNC milling centre as a full system, linking the spindle, axes, table, automatic tool changer, enclosure, and conveyors. It highlights how parts interact, the workflow, and simple checks for maintenance.
Major structural groups and castingsSpindle, axes, and table relationshipsTool changer location and motion pathsEnclosure, doors, and chip containmentConveyor routing and chip dischargeWalkaround inspection and baseline checksLesson 2Lubrication and Coolant Systems: Central Pumps, Lines, Nozzles, Filtration, Tramp Oil, and Sump CareThis part describes lubrication and coolant systems, covering pumps, metering tools, lines, nozzles, filtration, and sump maintenance. It connects fluid quality to precision, part longevity, and following environmental rules.
Central lube pumps and metering unitsWay lube distribution lines and leaksCoolant nozzles, flow, and chip evacuationFiltration, screens, and bag filtersTramp oil removal and concentration testsSump cleaning, disposal, and recordkeepingLesson 3Conveyor and Outer Device Links: Auto Part Moving, Sensors, Motor Rollers, Timing, and Safety BarriersThis part looks at conveyors and outer devices for handling chips and parts. It includes motors, sensors, timing, barriers, and links to CNC controls for dependable, safe, and easy-to-maintain work.
Chip conveyor types and drive optionsPart handling devices and escapementsConveyor sensors, jams, and level switchesTiming with CNC cycles and M-codesSafety guards, interlocks, and signagePreventive cleaning and wear inspectionLesson 4Linear Movement and Axis Parts: Ball Screws, Linear Rails, Encoders, Backlash, and Preload IdeasThis part explains axis mechanics, including ball screws, linear rails, and encoders. It covers backlash, preload, and alignment ideas, and how they influence precision, strength, and machine dependability over time.
Axis kinematic chain and load pathsBall screw construction and support bearingsLinear guide types, sizing, and lubricationEncoder mounting, resolution, and feedbackBacklash measurement and compensationPreload, rigidity, and thermal growth effectsLesson 5Automatic Tool Changer and Magazine Mechanics: Grippers, Selectors, Sensors, DiagnosticsThis part explains the build of automatic tool changers and magazines, including grippers, carousels, sensors, and drives. It covers alignment, tool info handling, diagnostics, and upkeep to prevent wrong loads and crashes.
ATC layouts: carousel, chain, drum typesGrippers, pots, and tool retention checksMagazine indexing drives and home referenceTool presence, position, and orientation sensorsATC change sequence and interlocksCommon ATC faults and diagnostic routinesLesson 6Detailed Spindle and Drive Parts: Bearings, Motor Types (Servo/Variable Frequency), Belts, CouplingsThis part centres on spindle and drive parts, including bearings, motors, belts, and couplings. It explains speed control, vibration causes, lubrication needs, and upkeep methods to lengthen spindle life.
Spindle cartridge layout and cooling pathsBearing types, preload, and failure modesServo and induction spindle motor optionsBelts, pulleys, and tension adjustmentCouplings, keys, and alignment checksVibration, noise, and temperature monitoringLesson 7Sensors and Safety Parts: Limit/Home Switches, Interlocks, Emergency Stops, Vibration and Temperature SensorsThis part covers sensors and safety parts, including limit and home switches, door interlocks, emergency stops, and condition sensors. It stresses testing, wiring checks, and records to keep operations safe.
Limit and home switch placementDoor and guard interlock principlesEmergency stop circuits and reset testsVibration and temperature monitoring usesSafety relays, circuits, and standardsPeriodic safety inspection proceduresLesson 8Electrical and Control Parts: Power Sharing, Drives, Servo Amplifiers, PLC, CNC Controller, HMIs, IO MappingThis part covers electrical power sharing, servo drives, amplifiers, PLC, CNC controller, HMI, and I/O mapping. It connects diagrams to actual hardware, focusing on fixing issues, grounding, and safe measuring.
Main power distribution and protectionServo drives, amplifiers, and motor cablesPLC roles, I/O modules, and field wiringCNC controller architecture and parametersHMI screens, alarms, and diagnosticsI/O mapping, signal tracing, and testing
