Acu-Rite CNC 3500i user manual Tool Length and Diameter Offset Preset, 201

The Z-axis then does a guarded Z move down 0.1" (2.54 mm) or whatever amount was placed in the E cycle parameter and then moves over toward the probe stylus 0.3" (7.62 mm) or until it touches the probe stylus. If contact is not made with the probe or if contact is made during a guarded move, then an alarm is generated and the canned cycle terminates.

After the probe stylus is touched on the first side, the machine then rapids up and over the stylus, then down on the opposite side, then over to the other two sides until it has touched the probe stylus on all four quadrants. This establishes the center of the probe stylus.

The spindle then turns off and the machine touches off on two sides of the probe with the spindle off finding the effective probe stylus diameter. Then, rapids up above the probe stylus and over to the center.

Remove the calibration standard. You are now ready to start running the G151 to set your tool-length offsets or tool diameter registers.

Tool Length and Diameter Offset Preset

Updates length and diameter tool registers.

If the tool has a hole on the bottom so that the probe would fall between the tool teeth, do not use this cycle. Damage to the probe could result. In this case, use G152 for manual length preset or G153 for manual diameter preset.

Each tool must have the length set once before trying to set the diameter. Call this cycle up the first time using Q2 because it automatically sets the length first then the diameter.

Calibrate the tool probe at least once before trying to automatically preset a tool. This is done initially, but if the stylus is ever changed or the probe is moved, then you must again calibrate the tool probe

This tool preset (G151) can be run from within a program or from the Manual Data Input Mode with G-code MDI selected.

7.3 Probing Cycles

ACU-RITE 3500i 201