CNC Machine Operator Course

Lesson 1 • Shop Safety and Hazard Control

Addresses personal protective equipment, machine guarding, and emergency procedures. Safety compliance underpins every hands-on activity in the course.

Lesson 2 • Measurement and Inspection Tools

Introduces precision hand tools including micrometers, calipers, and gauges. Accurate measurement is foundational to producing parts within specification.

Lesson 3 • Introduction to Machine Technology

Covers the scope, history, and industrial role of machine technology. Establishes context for all subsequent technical content in the course.

Lesson 4 • Reading Engineering Drawings

Teaches orthographic projection, dimensioning standards, and tolerance notation. Drawing literacy is required for all subsequent machining operations.

Lesson 1 • Tool Inspection and Reconditioning

Teaches visual inspection, insert indexing, and HSS tool grinding. Timely tool maintenance prevents scrap and unplanned downtime.

Lesson 2 • Cutting Fluids and Lubrication

Examines coolant types, application methods, and maintenance practices. Correct fluid use extends tool life and improves surface finish.

Lesson 3 • Toolholding and Workholding Devices

Covers lathe tool posts, milling arbors, collets, and chucks. Rigid, accurate toolholding is essential for dimensional accuracy and operator safety.

Lesson 4 • Cutting Tool Geometry Fundamentals

Explains rake angles, relief angles, and cutting edge geometry. Geometry directly controls chip formation, tool life, and surface finish quality.

Lesson 1 • Lathe Components and Controls

Identifies headstock, carriage, tailstock, and feed mechanisms. Understanding machine anatomy enables safe setup and efficient operation.

Lesson 2 • Workpiece Setup and Alignment

Covers chuck mounting, between-centres setup, and runout correction. Proper alignment is prerequisite to achieving dimensional tolerances.

Lesson 3 • Drilling and Boring on the Lathe

Teaches centre drilling, twist drilling, and single-point boring for internal features. Boring corrects hole location and achieves tight tolerances.

Lesson 4 • Thread Cutting on the Lathe

Covers external and internal thread cutting using the compound rest and threading dial. Thread accuracy is verified with gauges and thread wires.

Lesson 1 • Milling Machine Types and Controls

Distinguishes vertical, horizontal, and universal mills and their control systems. Machine familiarity enables safe, efficient setup and operation.

Lesson 2 • Workholding and Part Setup

Covers vise alignment, strap clamping, and rotary table use. Secure, accurate workholding prevents movement and ensures positional accuracy.

Lesson 3 • Drilling and Boring on the Mill

Covers spot drilling, peck drilling, and boring head use for precise hole location. Mill drilling complements lathe operations for prismatic parts.

Lesson 4 • Slot, Keyway, and Pocket Milling

Develops skill in cutting slots, keyways, and closed pockets with end mills. Accurate slot width and depth are critical for mating part fit.

Lesson 1 • Surface Grinding Techniques

Teaches magnetic chuck setup, wheel dressing, and cross-feed grinding passes. Surface grinding produces flat reference surfaces and close thickness tolerances.

Lesson 2 • Tool and Cutter Grinding

Covers offhand grinding and fixture-guided sharpening of drills, end mills, and lathe tools. Sharp, correctly ground tools are essential for quality and efficiency.

Lesson 3 • Honing, Lapping, and Superfinishing

Introduces abrasive finishing processes that improve bore geometry and surface texture beyond grinding capability. Process selection depends on tolerance and finish requirements.

Lesson 4 • Grinding Wheel Selection and Safety

Covers abrasive type, grit, grade, and bond selection for various materials. Wheel inspection and ring testing are mandatory safety steps before mounting.

Lesson 1 • CNC Milling Operations

Programmes contour milling, pocket cycles, and hole patterns on a CNC machining centre. Cutter compensation ensures dimensional accuracy despite tool wear.

Lesson 2 • CNC Machine Architecture and Controls

Explains axes, servo drives, spindle motors, and the machine control unit. Understanding hardware enables effective troubleshooting and safe operation.

Lesson 3 • G-Code and M-Code Programming Basics

Introduces preparatory and miscellaneous codes for motion, spindle, and coolant control. Manual programming builds understanding that supports CAM-generated code review.

Lesson 4 • Coordinate Systems and Work Offsets

Covers absolute vs. incremental positioning, machine zero, and work coordinate offsets. Correct offset entry is critical for part location accuracy.

Lesson 1 • Statistical Process Control

Introduces control charts, process capability indices, and sampling plans. SPC enables proactive process adjustment before defects occur.

Lesson 2 • Geometric Dimensioning and Tolerancing

Interprets GD&T symbols for form, orientation, location, and runout on engineering drawings. GD&T provides unambiguous functional requirements for inspection.

Lesson 3 • Non-Destructive Testing Methods

Surveys dye penetrant, magnetic particle, and ultrasonic testing for surface and subsurface defects. NDT verifies part integrity without destroying the workpiece.

Lesson 4 • Advanced Measurement Instruments

Covers optical comparators, height gauges, and coordinate measuring machines for complex feature inspection. Instrument selection matches feature geometry and tolerance class.

Lesson 1 • Cost Estimation and Lean Principles

Covers cycle time calculation, setup cost allocation, and waste reduction in machining cells. Lean thinking improves throughput without sacrificing quality.

Lesson 2 • Cutting Parameter Optimisation

Applies speed, feed, and depth-of-cut relationships to maximise material removal rate while controlling tool life. Data-driven optimisation reduces cost per part.

Lesson 3 • Multi-Axis Machining Concepts

Introduces 4-axis and 5-axis machining strategies for complex contoured surfaces. Multi-axis capability reduces setups and improves geometric accuracy.

Lesson 4 • Fixture Design Principles

Covers 3-2-1 locating, clamping force direction, and modular fixture components. Well-designed fixtures ensure repeatability across production runs.