Lesson 1Spindle: types, speed/torque graphs, bearings, heat expansion and wobble effectsCovers spindle build and performance, including belt-driven, direct-drive, and built-in motor types, speed and torque graphs, bearing setups, heat growth, 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 styles, tool gripping systems, swap sequence and typical breakdownsExplains automatic tool changer setup and function, covering magazine designs, tool holders and grippers, change steps, sensors, and usual mechanical or air-powered faults that impact dependability 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, programme storage, inputs/outputs, alarms, manual data input and edit modesIntroduces basics of FANUC, Siemens, and Heidenhain CNC controls, including screen layout, programme storage choices, input/output maps, alarm management, and safe use of manual data input and edit modes for setup, testing, and upkeep tasks.
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 practical 3-axis machining centre model and finding maker datasheetsGuides you in choosing a sensible 3-axis machining centre model for training or production, based on size, spindle, tool changer, and power requirements, and shows how to find, read, and compare original equipment maker catalogues and technical 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 5Machine movements: X, Y, Z axes, travel limits, ball screws, slide rails, play considerationsLooks at 3-axis machine movements, including X, Y, Z travels, home positions, ball screws, slide rails, and play. Stresses how wear, misalignment, and limit settings influence positioning accuracy and consistency.
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, filtering, coolant choice, mix strength and dirt sourcesExplains coolant system parts and workings, including pump types, tank design, filtering ways, coolant picking, mix checking, and common dirt sources that shorten tool life and worsen surface 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 hand-done, lube types, schedules, common fault signsCovers central and manual lubrication on 3-axis machining centres, lube types for slides, ball screws, and spindles, reading lube timetables, confirming delivery, and spotting early signs of lube problems.
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 locks, coolant nozzles, mist removal and compressed air needsDescribes support systems for safe CNC running, including chip conveyors, door locks, coolant and air nozzles, mist removal, and air quality, focusing on checks and simple fault-finding.
Chip conveyor types and maintenanceDoor interlocks and safety switchesCoolant and air nozzle positioningMist extraction and ducting checksCompressed air quality requirements
