Lesson 1Overview of a CNC milling centre: spindle, axes, table, tool changer, enclosure, and conveyor setupThis part introduces the CNC milling centre as a full system, linking spindle, axes, table, ATC, enclosure, and conveyors. It highlights how parts interact, the workflow, and simple checks during servicing.
Main structural groups and castingsSpindle, axes, and table linksTool changer spot and movement routesEnclosure, doors, and chip holdingConveyor paths and chip removalWalkaround check and starting point testsLesson 2Lubrication and coolant systems: central lubrication pumps, lines, nozzles, coolant filtration, tramp oil and sump handlingThis part explains lubrication and coolant systems, covering pumps, metering gear, lines, nozzles, filtration, and sump care. It connects fluid state to precision, part lifespan, and eco-rules.
Central lube pumps and metering unitsWay lube distribution lines and leaksCoolant nozzles, flow, and chip clearingFiltration, screens, and bag filtersTramp oil removal and strength testsSump cleaning, disposal, and record-keepingLesson 3Conveyor and peripheral setup: automatic part handling, sensors, motorised rollers, timing, and safety barriersThis part looks at conveyors and extra devices for chip and part moving. It includes motors, sensors, timing, barriers, and links to CNC controls for steady, safe, low-upkeep running.
Chip conveyor types and drive choicesPart handling devices and releasesConveyor sensors, jams, and level switchesTiming with CNC cycles and M-codesSafety barriers, locks, and signsRoutine cleaning and wear checksLesson 4Linear motion and axis parts: ball screws, linear guides, encoders, backlash and preload ideasThis part details axis mechanics, including ball screws, linear guides, and encoders. It covers backlash, preload, and alignment ideas, and how they impact precision, strength, and machine dependability over time.
Axis movement chain and load pathsBall screw build and support bearingsLinear guide types, sizing, and lubricationEncoder fitting, detail, and feedbackBacklash measure and fixPreload, strength, and heat growth effectsLesson 5Automatic tool changer (ATC) and magazine mechanics: grippers, selectors, sensors, diagnosticsThis part explains ATC and magazine build, including grippers, carousels, sensors, and drives. It covers alignment, tool info handling, fault-finding, and routine upkeep to stop wrong loads and crashes.
ATC setups: carousel, chain, drum typesGrippers, pots, and tool hold checksMagazine indexing drives and home pointTool presence, position, and angle sensorsATC change order and locksCommon ATC faults and check routinesLesson 6Detailed spindle and drive system parts: bearings, motor types (servo/variable frequency), belts, couplingsThis part focuses on spindle and drive parts, including bearings, motors, belts, and couplings. It explains speed control, shake sources, lubrication needs, and upkeep ways to lengthen spindle life.
Spindle cartridge layout and cooling pathsBearing types, preload, and failure waysServo and induction spindle motor choicesBelts, pulleys, and tension tweaksCouplings, keys, and alignment checksShake, noise, and temp watchingLesson 7Sensors and safety subsystems: limit/home switches, interlocks, E-stops, vibration and temperature sensorsThis part covers sensors and safety subsystems, including limit and home switches, door locks, E-stops, and state sensors. It stresses testing, wiring checks, and records to keep safe running.
Limit and home switch spotsDoor and guard lock rulesEmergency stop circuits and reset testsVibration and temp watching usesSafety relays, circuits, and rulesRoutine safety check stepsLesson 8Electrical and control subsystems: power distribution, drives, servo amplifiers, PLC, CNC controller, HMIs and IO mappingThis part covers electrical power spread, servo drives, amplifiers, PLC, CNC controller, HMI, and I/O mapping. It links drawings to real gear, stressing fault-finding, grounding, and safe measure ways.
Main power spread and protectionServo drives, amplifiers, and motor cablesPLC roles, I/O modules, and field wiringCNC controller build and settingsHMI screens, alarms, and diagnosticsI/O mapping, signal tracing, and testing
