1. Milling with the Lab-Volt 5600
02/27/08

2. Agenda Introduction to g-code
Create a design for a 2”x2” piece of milling stock
Graph on paper
Create the g-code for the paper design

3. Vocabulary
CNC - a computer that reads G-code instructions and drives a milling machine in order to milling a part
End mill - a cutting to similar to a drill bit in appearance with cutting edges on its circumference
PRZ - programmed reference zero

4. What’s g-code? A type of Industrial Standard Operation (ISO) codes.
We will use their conversational equivalents.

5. G-CODE DEMO

6. Coordinate System

7. Coordinate System (x,y,z) where
x axis parallels the front of the cnc mill
Y axis parallels the side of the cnc mill
Z axis parallels the height of the cnc mill
(x,y,z) = (0,0,0) or the Programmed Reference Zero is set before cutting to be a position at the top of the mill stock at its left front corner.
This means that to cut the material, the end mill’s z coordinate will need to be negative.

8. PRZ

9. ALWAYS Emulate Before Milling!!

10. Straight Lines FEED 5 SPEED 1500 MOVE X.125 Y.125 Z0.1 RAPID Z-.125
END

11. In class assignment
Using the graph paper provided draw a maze to be milled with an 1/8” end mill.
Write the g-code to mill it.
Run the simulations in four views.