Lathe Course

Lesson 1 • Reading Engineering Drawings for Lathe Work

Teaches interpretation of orthographic views, tolerances, and surface finish symbols relevant to turned parts. Connects print reading to machine setup decisions.

Lesson 2 • Shop Safety Rules and PPE

Establishes mandatory safety rules, personal protective equipment requirements, and hazard recognition. Directly prevents injury during all subsequent hands-on work.

Lesson 3 • Types and Components of Lathes

Covers engine, bench, and CNC lathe classifications and their primary components. Establishes vocabulary used throughout the course.

Lesson 4 • Workholding Devices and Setup

Introduces chucks, faceplates, and centers used to secure workpieces. Proper setup prevents part ejection and ensures dimensional accuracy.

Lesson 1 • Indexable Insert Systems

Covers insert shapes, ISO designation codes, and toolholder styles for indexable carbide systems. Students learn to read insert codes and match holders to operations.

Lesson 2 • Tool Height and Alignment Setup

Explains setting tool tip to spindle centerline and aligning tools for specific operations. Misalignment causes taper, poor finish, and premature tool failure.

Lesson 3 • Cutting Tool Materials

Compares high-speed steel, carbide, ceramic, and CBN tool materials by hardness, toughness, and heat resistance. Material choice directly affects cutting speed and tool life.

Lesson 4 • Tool Grinding and Reconditioning

Teaches offhand grinding of HSS tools on bench grinders to correct geometry. Proper grinding extends tool life and maintains cutting performance.

Lesson 1 • Cutting Speed Theory

Defines surface feet per minute and meters per minute and their relationship to tool life. Understanding cutting speed is the basis for all parameter calculations.

Lesson 2 • Parameter Optimization and Troubleshooting

Diagnoses poor surface finish, excessive tool wear, and chatter by adjusting cutting parameters. Connects theory to real-time problem solving at the machine.

Lesson 3 • Feed Rate and Depth of Cut

Covers feed rate selection in inches or millimeters per revolution and depth-of-cut guidelines for roughing and finishing. Balances material removal rate with surface quality.

Lesson 4 • Cutting Fluids and Coolants

Identifies cutting fluid types, application methods, and material compatibility. Proper fluid use reduces heat, extends tool life, and improves surface finish.

Lesson 1 • Parting and Grooving

Uses parting and grooving tools to cut off stock and produce internal and external grooves. Correct feed rate and tool support prevent tool breakage.

Lesson 2 • Straight Turning to Diameter

Covers roughing and finishing passes to reduce stock to a target diameter. Students practice reading the cross-slide dial and measuring with micrometers.

Lesson 3 • Facing the Workpiece

Teaches facing cuts to produce a flat, square end surface as a reference datum. Accurate facing is the first step in every turned part sequence.

Lesson 4 • Knurling Operations

Produces straight and diamond knurl patterns for grip surfaces using knurling tool holders. Proper pressure and speed settings ensure uniform pattern formation.

Lesson 1 • Form Turning and Template Turning

Produces curved and contoured profiles using form tools and tracer attachments. Connects taper skills to complex profile generation for production work.

Lesson 2 • Taper Attachment Method

Uses a taper attachment to guide the cross-slide along a set angle for long, accurate tapers. The attachment allows power feed and maintains consistent taper throughout.

Lesson 3 • Compound Rest Taper Turning

Swivels the compound rest to the half-included angle to cut short, steep tapers manually. Compound rest method is ideal for tool shanks and short internal tapers.

Lesson 4 • Tailstock Offset Taper Turning

Offsets the tailstock to produce long, gradual tapers on work held between centers. Offset calculation and center alignment are critical for accuracy.

Lesson 1 • Internal Grooving and Counterboring

Produces internal grooves, counterbores, and spotfaces using specialized boring tools. Extends hole-making skills to complex internal features required in assemblies.

Lesson 2 • Reaming for Precision Fits

Uses machine reamers to finish bores to close tolerances and smooth surface finish. Correct reaming allowance and speed ensure accurate, consistent hole size.

Lesson 3 • Boring to Size

Enlarges drilled holes to precise diameters using single-point boring bars. Boring corrects hole location and achieves tolerances unreachable by drilling alone.

Lesson 4 • Drilling with the Tailstock

Advances twist drills into rotating workpieces using the tailstock quill for straight holes. Feed rate and peck drilling cycles prevent drill breakage in deep holes.

Lesson 1 • Thread Terminology and Standards

Defines pitch, lead, major and minor diameters, and thread angle for unified and metric systems. Accurate terminology is essential for setup and inspection of threads.

Lesson 2 • Lathe Gearbox Setup for Threading

Configures the quick-change gearbox and lead screw to produce the correct thread pitch. Proper gearbox setup is the foundation of accurate single-point threading.

Lesson 3 • Internal Thread Cutting

Produces internal threads using boring-bar-style threading tools in pre-bored holes. Internal threading requires careful tool clearance and depth control.

Lesson 4 • External Thread Cutting

Cuts external threads using a 60-degree threading tool with compound rest infeed. Students practice multiple passes to reach full thread depth without overcut.

Lesson 1 • Surface Finish Measurement and Control

Measures surface roughness with profilometers and visual comparators and identifies causes of poor finish. Surface finish directly affects part function and fatigue life.

Lesson 2 • Measurement Principles and Instruments

Covers measurement uncertainty, instrument calibration, and selection of tools for given tolerances. Accurate measurement is the foundation of quality control in machining.

Lesson 3 • Thread and Taper Gauging

Applies thread plug and ring gauges, three-wire method, and taper gauges to verify threaded and tapered features. Connects inspection to the thread and taper chapters.

Lesson 4 • Micrometers and Calipers

Teaches reading and using outside, inside, and depth micrometers and vernier and digital calipers. These instruments cover the majority of diameter and length measurements.