Lesson 1Overview of CNC Milling Center: Spindle, Axes, Table, Tool Changer, Enclosure, and Conveyor SetupThis part introduces the CNC milling center as a full system, showing how spindle, axes, table, automatic tool changer, enclosure, and conveyors connect. It stresses how parts interact, the work flow, and simple checks during upkeep to keep things running well.
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, Coolant Filters, Tramp Oil and Sump CareThis part explains lubrication and coolant systems, covering pumps, measuring devices, lines, nozzles, filters, and sump maintenance. It shows how fluid quality affects precision, part lifespan, and following environmental rules in Gambia.
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 Setup: Automatic Part Moving, Sensors, Motor 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 make sure operations are reliable, safe, and need little 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 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 accuracy, strength, and long-term machine dependability.
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, ChecksThis part explains automatic tool changer and magazine build, including grippers, carousels, sensors, and drives. It covers alignment, tool data management, 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 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 upkeep 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 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 always.
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 and IO MappingThis part covers electrical power sharing, servo drives, amplifiers, PLC, CNC controller, HMI, and I/O mapping. It links diagrams to real hardware, stressing problem-solving, grounding, and safe measuring 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
