Lesson 1Spindle: types, speed/torque charts, bearings, thermal growth and runout effectsLooks at spindle build and how it works, covering belt, direct, and built-in motor types, speed and torque graphs, bearing setups, heat expansion, wobble, and how they all affect precision and tool lifespan together.
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 modesGoes over automatic tool changer setup and running, including magazine kinds, tool holders and clamps, change 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 basics, like screen layout, program saving choices, I/O links, handling alarms, and safe MDI and edit modes for setup, testing, and upkeep jobs.
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 datasheetsHelps pick a proper 3-axis machining centre model for training or work, based on size, spindle, tool changer, and power needs, and shows finding, reading, and comparing maker 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, with X, Y, Z travels, home spots, ball screws, slide guides, and play. Stresses how wear, bad alignment, 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, like 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 extra systems for safe CNC work, like chip movers, door locks, coolant and 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
