Reading Assignment
- 26.1 Introduction to Numerical Control
- 26.2 Basic Principles of Numerical Control
- 26.3 Machining Centers and Trends
- 26.4 Ultra-High-Speed Machining Centers (UHSMCs)
- 26.5 Summary
Related link: TECH 4476 – Computer-Aided Manufacturing
Recommended Reading
Outline
Advantages of CNC
- Fast
- Accurate
- Repeatable
- Agile/Adaptable
- How CNC Works
CNC Terms
- Program
- Binary
- Word/Address Format
- Block
- Controller
- Motor
- Open/Closed Loop
Motors
- Stepper Motors
- Servo Motors
Motion Control
- Leadscrew
- Backlash
- Ballscrew
CNC Programming
Coordinate Systems
Rectangular Coordinates
- Linear Axes
- Right Hand Rule
- Other Axes
Linear Moves
Absolute vs. Incremental Coordinates
Coordinate System Offsets
Codes and Addresses to Learn First
•X, Y, Z, A, B, C, U, V, W
•These take a numerical value 2.0
•The decimal point is important
•2.0 does not mean 2
•G00
•G01
•G54-G59
•G90
•G91
•N
