Acu-Rite CNC 3500i user manual 213

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.

7.3 Probing Cycles

ACU-RITE 3500i 213