Lesson 1Spindle: types, speed/torque charts, bearings, thermal growth and runout effectsLooks at spindle build and how it works, covering belt-driven, direct-drive, and built-in motor types, speed-torque graphs, bearing setups, heat expansion, wobble, and their joint effect on precision and cutter lifespan.
Belt-driven vs direct and motor spindlesReading spindle speed and torque chartsSpindle bearing types and preload effectsThermal growth, warm-up, and offsetsRunout checks and impact on tool lifeLesson 2Automatic tool changer (ATC): magazine types, tool clamping systems, change sequence and common failure modesExplains automatic tool changer setup and running, including magazine kinds, tool holders and clamps, swap steps, sensors, and usual mechanical or air faults that hit reliability and safety.
Carousel vs chain and drum magazinesTool holder tapers and pull stud designTool clamp, unclamp, and drawbar checksTool change sequence and interlocksCommon ATC jams and fault diagnosisLesson 3Control systems: FANUC/Siemens/Heidenhain basics, program storage, I/O, alarms, MDI and edit modesIntroduces FANUC, Siemens, and Heidenhain CNC controls, covering screen layout, program saving choices, input/output maps, alarm fixes, and safe MDI/edit mode use for setup, trials, and upkeep.
FANUC, Siemens, Heidenhain interface overviewProgram storage, backup, and recall methodsDigital and analog I/O signals on the CNCAlarm categories, diagnostics, and reset stepsSafe use of MDI, edit, and lock modesLesson 4Selecting a realistic 3-axis machining center model and locating manufacturer datasheetsGuides picking a proper 3-axis machining centre model for training or work, based on size, spindle, tool changer, and power needs, plus finding, reading, and comparing factory catalogues and tech sheets.
Defining part size and accuracy requirementsEvaluating travels, table size, and payloadComparing spindle power, speed, and taperAssessing ATC capacity and tool interfaceFinding and interpreting OEM datasheetsLesson 5Kinematics: X, Y, Z axes, travel limits, ball screws, linear guides, backlash considerationsCovers 3-axis movement, including X, Y, Z ranges, home spots, ball screws, slide rails, and play. Stresses how wear, misalignment, and limits impact position accuracy and repeat runs.
Axis naming, travels, and home positionsSoft limits, hard limits, and overtravelBall screw design, pitch, and supportLinear guideways and lubrication needsBacklash sources, checks, and compensationLesson 6Coolant system: pump types, filtration, coolant selection, concentration and contamination sourcesExplains coolant setup and work, covering pump kinds, tank design, filter ways, coolant picks, mix checks, and dirt sources that cut tool life and finish quality.
Centrifugal and high-pressure pump typesTank layout, return flow, and agitationFilter screens, bags, and separator unitsCoolant selection and concentration testsContamination sources and corrective stepsLesson 7Lubrication system: centralized vs manual, lubricant types, schedules, common failure symptomsCovers central and hand lubrication on 3-axis centres, grease types for slides, screws, spindles, reading lube plans, checking flow, and spotting early fault signs.
Centralized vs manual lubrication layoutsWay, spindle, and ball screw lubricant typesReading OEM lubrication charts and intervalsChecking metering units and lube deliveryCommon lubrication failure symptomsLesson 8Auxiliary systems: chip conveyors, door interlocks, coolant nozzles, coolant nozzles, mist extraction and compressed air requirementsDescribes helper systems for safe CNC work, like chip movers, door locks, coolant/air jets, mist pullers, and air quality, focusing on checks and simple fixes.
Chip conveyor types and maintenanceDoor interlocks and safety switchesCoolant and air nozzle positioningMist extraction and ducting checksCompressed air quality requirements
