Acu-Rite CNC 3500i User Manual

ACU-RITE 3500i

From the Manual Data Input Mode with G-code MDI selected and the 
spindle off, input:



"G153 Tn Dn En" and touch the NC Start button. Where T is the tool 
number, D is roughly the diameter of the special tool (this should be 
larger but not more than 0.100" (2.54 mm) larger), and E is the Z-axis 
move down needed if different then the default 0.100" (2.54mm) so 
that the largest part of the tool diameter comes in contact with the 
edge of the probe stylus. For example, G153 T3 D3.5 E.25 and touch 
the NC Start button.



The Z-axis feeds down with the spindle on, touching the top of the 
probe stylus. Once the top of the probe is found, the Z-axis rapids 
back up above the probe and moves over to one side of the probe 
stylus. The tool then moves down the distance in E or 0.1" (2.54 
mm) if E is not programmed. Then, with the spindle turning in 
reverse, the canned cycle touches the side of the tool to the probe 
stylus twice on opposite sides establishing the tool's diameter. The 
new diameter is then stored in that tool's diameter register and 
clears any value in the diameter wear register. The Z-axis then rapids 
up to machine home.

The Tool Diameter has now been set and you can change to another 
tool and repeat steps 1 through 3.