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 the spindle, axes, table, automatic tool changer, enclosure, and conveyors. It highlights how parts work together, the workflow, and basic checks during maintenance.
Main structural groups and castingsSpindle, axes, and table connectionsTool changer position and movement pathsEnclosure, doors, and chip holdingConveyor paths and chip removalWalkaround check and starting point inspectionsLesson 2Lubrication and coolant systems: central lubrication pumps, lines, nozzles, coolant filters, tramp oil and sump careThis part explains lubrication and coolant systems, covering pumps, metering devices, lines, nozzles, filters, and sump maintenance. It connects fluid quality to precision, part lifespan, and following environmental rules.
Central lube pumps and metering unitsWay lube distribution lines and leaksCoolant nozzles, flow, and chip removalFiltration, screens, and bag filtersTramp oil removal and concentration testsSump cleaning, disposal, and recordkeepingLesson 3Conveyor and side equipment setup: automatic part handling, sensors, motorised rollers, timing, and safety barriersThis part looks at conveyors and side devices for handling chips and parts. It covers motors, sensors, timing, barriers, and linking with CNC controls to ensure reliable, safe, and easy-to-maintain operation.
Chip conveyor types and drive choicesPart handling devices and releasesConveyor sensors, jams, and level switchesTiming with CNC cycles and M-codesSafety barriers, locks, and signsRegular cleaning and wear checksLesson 4Linear movement and axis parts: ball screws, linear guides, encoders, backlash and preload ideasThis part details axis mechanics, including ball screws, linear guides, and encoders. It introduces backlash, preload, and alignment ideas, and shows how they impact precision, strength, and long-term machine dependability.
Axis movement chain and load pathsBall screw build and support bearingsLinear guide types, sizes, and lubricationEncoder fitting, detail, and feedbackBacklash measurement and adjustmentPreload, 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 data management, diagnostics, and regular maintenance to prevent wrong loads and crashes.
ATC setups: carousel, chain, drum typesGrippers, pots, and tool holding checksMagazine indexing drives and home positionTool presence, position, and angle sensorsATC change steps and locksCommon ATC problems and diagnostic stepsLesson 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, vibration causes, lubrication needs, and maintenance practices to lengthen spindle life.
Spindle cartridge layout and cooling pathsBearing types, preload, and failure signsServo and induction spindle motor choicesBelts, pulleys, and tension adjustmentsCouplings, keys, and alignment checksVibration, noise, and temperature monitoringLesson 7Sensors and safety parts: limit/home switches, interlocks, E-stops, vibration and temperature sensorsThis part covers sensors and safety parts, including limit and home switches, door interlocks, E-stops, and condition sensors. It stresses testing, wiring checks, and records to keep safe operation going.
Limit and home switch positionsDoor and guard interlock rulesEmergency stop circuits and reset testsVibration and temperature monitoring usesSafety relays, circuits, and standardsRegular safety check proceduresLesson 8Electrical and control parts: power distribution, drives, servo amplifiers, PLC, CNC controller, HMIs and IO mappingThis part covers electrical power distribution, servo drives, amplifiers, PLC, CNC controller, HMI, and I/O mapping. It links diagrams to actual hardware, stressing troubleshooting, grounding, and safe measurement practices.
Main power distribution and protectionServo drives, amplifiers, and motor cablesPLC roles, I/O modules, and field wiringCNC controller structure and settingsHMI screens, alarms, and diagnosticsI/O mapping, signal tracing, and testing
