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 stresses how parts work together, the production flow, and simple checks during servicing.
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, pipes, nozzles, coolant filters, tramp oil and sump careThis part explains lubrication and coolant setups, covering pumps, metering units, pipes, nozzles, filters, and sump maintenance. It shows how fluid quality affects precision, part lifespan, and meeting 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 side equipment links: automatic part handling, sensors, powered rollers, timing, and safety barriersThis part looks at conveyors and side devices for handling chips and parts. It covers motors, sensors, timing, guards, and how they connect with CNC controls for reliable, safe running with minimal fixing.
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 motion and axis parts: ball screws, linear rails, encoders, backlash and preload ideasThis part details axis mechanics, including ball screws, linear rails, and encoders. It covers backlash, preload, and alignment, and how they impact precision, strength, and machine reliability 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 (ATC) and magazine workings: grippers, selectors, sensors, checksThis part explains ATC and magazine build, including grippers, carousels, sensors, and drives. It covers alignment, tool info handling, fault checks, and routine 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 speed), belts, couplingsThis part focuses on spindle and drive components like bearings, motors, belts, and couplings. It explains speed control, vibration causes, lubrication needs, and servicing tips to prolong 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 systems, including limit and home switches, door interlocks, emergency stops, and condition sensors. It stresses testing, wiring checks, and records for safe operation.
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 systems: power supply, drives, servo amps, PLC, CNC controller, screens and IO linksThis part covers electrical power distribution, servo drives, amplifiers, PLC, CNC controller, screens, and I/O mapping. It connects diagrams to actual hardware, focusing on fault-finding, earthing, and safe testing.
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
