Lesson 1Overview of CNC Milling Center: Spindle, Axes, Table, Tool Changer, Enclosure, and Conveyor LinksThis part presents the CNC milling center as a full setup, linking the spindle, axes, table, automatic tool changer, enclosure, and conveyors. It highlights how parts connect, the work flow, and simple checks needed for maintenance in local settings.
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, Filtration, Tramp Oil, and Sump CareThis part covers lubrication and coolant systems, with pumps, metering tools, lines, nozzles, filters, and sump handling. It shows how fluid quality affects precision, part lifespan, and rules for safe disposal in Eritrea.
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: Auto Part Handling, Sensors, Motor Rollers, Timing, and Safety BarriersThis part looks at conveyors and side tools for managing chips and parts. It includes motors, sensors, timing, barriers, and ties to CNC controls for steady, safe work with little upkeep in industrial sites.
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 Guides, Encoders, Backlash, and Preload IdeasThis part explains axis mechanics with ball screws, linear guides, and encoders. It covers backlash, preload, and alignment, and how they influence precision, strength, and machine dependability 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 and Magazine Mechanics: Grippers, Selectors, Sensors, DiagnosticsThis part describes automatic tool changer and magazine build, with grippers, carousels, sensors, and drives. It includes alignment, tool info handling, checks, and 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 Frequency), Belts, CouplingsThis part centers on spindle and drive parts like bearings, motors, belts, and couplings. It explains speed control, vibration causes, lubrication needs, and upkeep to lengthen spindle life in harsh conditions.
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, E-Stops, Vibration and Temperature SensorsThis part handles sensors and safety parts, including limit and home switches, door interlocks, emergency stops, and condition sensors. It stresses testing, wire checks, and records to keep operations safe.
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 Distribution, Drives, Servo Amplifiers, PLC, CNC Controller, HMIs, IO MappingThis part covers electrical power spread, servo drives, amplifiers, PLC, CNC controller, HMI, and input/output mapping. It connects diagrams to actual hardware, focusing on fixing issues, grounding, and safe checks.
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
