Lesson 1Spindle: types, speed/torque charts, bearings, thermal growth and runout effectsCovers spindle build and how it works, including belt, direct, and built-in motor types, speed and torque graphs, bearing setups, heat expansion, runout, and how they all affect precision and tool 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 modesLooks at automatic tool changer build 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, covering screen layout, program saving choices, I/O links, alarm fixes, and safe MDI and edit mode use for setup, tests, 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 4Picking a real 3-axis machining centre model and finding maker datasheetsGuides picking a practical 3-axis machining centre model for training or making, based on size, spindle, tool changer, and power needs, and shows how to find, read, and compare 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 considerationsLooks into 3-axis movement, covering X, Y, Z travels, home spots, ball screws, linear rails, and backlash. Stresses how wear, misalignment, and limits affect 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 system parts and running, including pump kinds, tank setup, filter ways, coolant choice, mix control, and common 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: central vs manual, lubricant types, schedules, common failure symptomsCovers central and hand lubrication on 3-axis machining centres, lube types for slides, ball screws, and spindles, reading lube plans, checking flow, and spotting early lube 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 8Extra systems: chip conveyors, door interlocks, coolant nozzles, mist extraction and compressed air needsDescribes extra systems for safe CNC work, like chip conveyors, door locks, coolant and air nozzles, mist removal, 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
