1. CNC Machining

2. CNC Overview
Computer Numerical Control machining is a subtractive method
5 axes of control at most, 3 axes of control at the UC, Irvine CNC machine
Tolerance limits are determined by accuracy of x-y tables
CNC has the highest relative tolerances of any manufacturing method

3. Preparing
Produce model of part using SolidWorks or AutoCAD, this is saved as a CAD file
Convert CAD file to CAM file
Put CAM file into CNC machine
Ensure that the x-y table is level and aligned

4. Raw Material For the demonstration: Al - 7”x7”x.25”
Determine dimensions of and mount work piece

5. Calibration
Find x=0 and y=0 coordinates a corner of the work piece using the edge finder
Find relative height of each tool using the dial indicator and input measurement into CNC machine

6. Tool List Select tools and place in collets
Arrange tool in order to be used

7. Machining Run CAM file on the CNC machine Change tools when prompted
Use jets and lubricants were needed to cool work piece

8. Finishing Piece
Perform tertiary operations after removing from CNC machine
Clean off lubricants
Clean up lab