Lesson 1Overview of CNC milling center: spindle, axes, table, tool changer, enclosure, and conveyor connectionDis part go show you di CNC milling center as one complete system, relating spindle, axes, table, ATC, enclosure, and conveyors. E go stress how di parts dey interact, di work flow, and basic checking during maintenance.
Main structural groups and castingsSpindle, axes, and table connectionsTool changer place and movement pathsEnclosure, doors, and chip holdingConveyor path and chip removalWalkaround check and starting pointsLesson 2Lubrication and coolant systems: central lubrication pumps, lines, nozzles, coolant filtration, tramp oil and sump managementDis part go explain lubrication and coolant systems, including pumps, metering devices, lines, nozzles, filtration, and sump care. E go link fluid condition to accuracy, component life, and 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 peripheral connection: automatic part handling, sensors, motorized rollers, timing, and safety guardsDis part go look at conveyors and peripheral devices for chip and part handling. E go cover motors, sensors, timing, guarding, and connection with CNC logic to make sure reliable, safe, and low-maintenance 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 checkLesson 4Linear motion and axis components: ball screws, linear guides, encoders, backlash and preload ideasDis part go detail axis mechanics, including ball screws, linear guides, and encoders. E go introduce backlash, preload, and alignment ideas, and show how dem affect accuracy, strength, and long-term machine reliability.
Axis kinematic chain and load pathsBall screw building and support bearingsLinear guide types, sizing, and lubricationEncoder mounting, resolution, and feedbackBacklash measurement and compensationPreload, strength, and thermal growth effectsLesson 5Automatic tool changer (ATC) and magazine mechanics: grippers, selectors, sensors, diagnosticsDis part go explain ATC and magazine building, including grippers, carousels, sensors, and drives. E go cover alignment, tool data handling, diagnostics, and preventive maintenance to avoid 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 system components: bearings, motor types (servo/variable frequency), belts, couplingsDis part go focus on spindle and drive components, including bearings, motors, belts, and couplings. E go explain speed control, vibration sources, lubrication needs, and maintenance practices to make spindle last longer.
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 subsystems: limit/home switches, interlocks, E-stops, vibration and temperature sensorsDis part go cover sensors and safety subsystems, including limit and home switches, door interlocks, E-stops, and condition sensors. E go stress testing, wiring checks, and documentation to keep 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 subsystems: power distribution, drives, servo amplifiers, PLC, CNC controller, HMIs and IO mappingDis part go cover electrical power distribution, servo drives, amplifiers, PLC, CNC controller, HMI, and I/O mapping. E go link diagrams to real 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 architecture and parametersHMI screens, alarms, and diagnosticsI/O mapping, signal tracing, and testing
