jpf 1.1 CNC Machine Tool Basics
Refer to Figure 2 of this lab.
Machine Work Coordinates
Right Handed Coordinate System
Machinist tells the machine where the origin is located.
For this Project centered at lower left corner of the work piece.
1. Table moves in X and Y dire
2. Tool moves along the Z direction
Absolute vs. Incremental(relative) coordinates
When using absolute coordinates, all coordinates are referenced from the origin of the work coordinate system.
When using incremental coordinates, all coordinates are referenced from the current tool position. These are discussed in detail below.
Figure 2. Milling Machine Work Coordinates.