CNC Lathe Programmer Course

Lesson 1 • Shop Safety and Hazard Control

Addresses PPE requirements, chip hazards, coolant handling, and emergency stop procedures. Safety compliance is mandatory before any machine operation begins.

Lesson 2 • Coordinate Systems and Machine Axes

Introduces the Cartesian coordinate system as applied to lathe axes X and Z. Correct axis orientation is essential for writing accurate tool motion commands.

Lesson 3 • CNC Lathe Machine Anatomy

Covers headstock, tailstock, carriage, turret, and control panel components. Establishes the physical reference framework needed for all subsequent programming tasks.

Lesson 1 • Carbide Insert Geometry and Grades

Explains ISO insert shape codes, rake angles, nose radius, and coating grades. Insert selection directly determines surface finish and tool life.

Lesson 2 • Cutting Speeds and Feed Rates

Applies surface footage and chip load formulas to calculate spindle RPM and feed rate. Correct parameters extend tool life and maintain dimensional accuracy.

Lesson 3 • Tool Holders and Turret Setup

Covers OD turning, boring bar, parting, and threading holders mounted in the turret. Correct holder orientation prevents tool interference and crash risk.

Lesson 4 • Tool Offset Measurement and Entry

Teaches manual and touch-off methods for measuring tool length and radius offsets. Accurate offset entry is the link between physical tooling and programmed coordinates.

Lesson 1 • Program Structure and Block Format

Explains program number, sequence numbers, word address format, and end-of-block characters. A well-structured program is readable, editable, and error-resistant.

Lesson 2 • Coolant and Miscellaneous M-Codes

Introduces M08, M09 coolant codes and other auxiliary functions such as chuck and tailstock control. Auxiliary codes complete the machine's operational cycle.

Lesson 3 • Tool Call and Offset Activation

Explains T-word tool selection and H/D offset number activation within a program. Correct tool calls ensure the controller applies the right geometry compensation.

Lesson 4 • Spindle and Feed Control Codes

Covers M03, M04, M05 spindle commands and F-word feed rate assignment. These codes control the two primary cutting variables in every turning operation.

Lesson 1 • Facing Cycle Programming

Programs a flat face on the part end using G01 moves with correct depth and feed. Facing establishes the Z-axis datum for all subsequent operations.

Lesson 2 • Straight OD Turning

Programs single-pass and multi-pass OD turning to achieve target diameter and length. Roughing and finishing passes are planned to balance material removal and accuracy.

Lesson 3 • Chamfer and Radius Programming

Adds chamfers and corner radii using comma-address shortcuts or G01/G02 blocks. Edge breaks improve part function and meet drawing callout requirements.

Lesson 4 • Taper Turning with G01

Programs angular taper cuts by specifying simultaneous X and Z motion in a single G01 block. Taper programming introduces compound-axis tool path planning.

Lesson 1 • G70 Finish Turning Cycle

Applies G70 to execute a single finishing pass over the profile defined for G71 or G72. G70 reuses the profile definition, ensuring consistency between rough and finish passes.

Lesson 2 • G71 Stock Removal Roughing Cycle

Programs the G71 multiple-pass roughing cycle referencing a finish profile definition. G71 automates depth-of-cut stepping and dramatically reduces program length.

Lesson 3 • G90 and G92 Fixed Turning Cycles

Programs the G90 OD/ID turning cycle and G92 threading cycle for repetitive single-pass cuts. Fixed cycles simplify repetitive operations with minimal block count.

Lesson 4 • G74 and G75 Grooving Cycles

Programs G74 axial peck drilling and G75 OD/ID grooving cycles for repetitive groove patterns. These cycles handle chip breaking and retract automatically.

Lesson 1 • Thread Geometry and Terminology

Defines pitch, lead, thread depth, major and minor diameters, and thread form angles. Accurate geometry knowledge is prerequisite to calculating threading parameters.

Lesson 2 • G32 Single-Block Threading

Programs G32 for manual single-pass threading with explicit infeed and retract blocks. G32 provides maximum programmer control over each threading pass.

Lesson 3 • G76 Threading Canned Cycle

Programs the G76 two-block threading cycle for automatic multi-pass infeed and spring passes. G76 reduces programming effort while maintaining thread quality.

Lesson 4 • Internal Threading and Tapping

Adapts threading cycles for ID threads and programs rigid tapping cycles for tapped holes. Internal thread programming requires careful bore diameter and clearance planning.

Lesson 1 • Groove Geometry and Tool Selection

Defines groove types including OD, ID, face, and undercut grooves and matches insert width to groove width. Tool selection determines achievable groove geometry and surface quality.

Lesson 2 • Parting and Cutoff Operations

Programs parting blade cutoff with correct feed, speed, and coolant to prevent blade breakage. Parting is the highest-risk turning operation and demands precise parameter control.

Lesson 3 • Single-Pass and Multi-Pass Grooving

Programs narrow single-pass grooves and wide multi-pass grooves with step-over logic. Multi-pass grooving prevents tool deflection and maintains groove wall straightness.

Lesson 4 • Undercut and Relief Groove Programming

Programs thread relief, snap ring, and O-ring grooves with precise width and corner geometry. Relief grooves are functionally critical and require tight dimensional control.

Lesson 1 • Offset Adjustment and Error Correction

Calculates and applies wear and geometry offset corrections based on measured deviations. Systematic offset adjustment is the primary in-process quality control method.

Lesson 2 • Program Optimization for Cycle Time

Reduces cycle time by optimizing rapid moves, depth of cut, feed rates, and tool change positions. Cycle time reduction directly improves machine productivity and part cost.

Lesson 3 • Statistical Process Control Basics

Introduces control charts and Cpk to monitor dimensional variation during production runs. SPC data enables proactive offset adjustment before parts go out of tolerance.

Lesson 4 • First Article Inspection

Measures the first completed part against all drawing dimensions using appropriate gauging. First article results drive offset corrections before production quantities begin.