Lesson 1Spindle: kinds, speed/power graphs, bearings, heat stretch and wobble effectsLooks at spindle build and how it works, covering belt-driven, direct-drive, and built-in motor types, speed and power lines, bearing setups, heat growth, wobble, and how they all hit on preciseness and cutter lasting.
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 2Auto tool changer (ATC): holder types, tool grip systems, swap steps and usual breakdown spotsGoes over auto tool changer build and running, with holder styles, tool grips and locks, swap order, sensors, and common mechanical or air faults that mess with steadiness 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 setups: FANUC/Siemens/Heidenhain starters, program saving, inputs/outputs, alerts, manual data and edit waysStarts with FANUC, Siemens, and Heidenhain CNC basics, screen layouts, program save choices, input/output maps, alert fixes, and safe manual data entry and edit for setup, trials, 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 proper 3-axis machining centre model and finding maker spec sheetsHelps pick a real 3-axis machining centre model for training or making, based on size, spindle, tool changer, and power wants, and shows finding, reading, and matching maker books 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 5Movement setup: X, Y, Z paths, travel ends, ball screws, straight rails, play checksChecks out 3-axis movement, X, Y, Z paths, home spots, ball screws, straight rails, and play. Stresses how wear, off-line, and end settings hit spot-on 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 setup: pump kinds, filtering, coolant picks, mix strength and dirt comes-fromCovers coolant setup parts and work, pump kinds, tank design, filter ways, coolant choices, mix watch, and usual dirt sources that cut cutter 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 7Oiling setup: central vs hand-done, oil kinds, times, usual fault signsCovers central and hand oiling on 3-axis machining centres, oil types for slides, ball screws, spindles, reading oil times, checking flow, and spotting early oil fail 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 setups: chip movers, door locks, coolant tips, mist pullers and pressed air needsDescribes extra setups for safe CNC work, chip movers, door locks, coolant and air tips, mist removal, pressed air quality, with 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
