Acu-Rite CNC 3500i user manual 210

7.3 Probing Cycles

Large tools can result in probe damage if the touch feedrate is set too fast. For this reason, the cycle parameters: M, S, and R have been added to enable the programmer/operator to override the values in the machine setup parameters for the specific tool being checked or set.

You must have the tool positioned over the probe stylus so the tooth that sticks down the furthest is directly over the center of the probe stylus and above the stylus less than 0.100" (2.0 mm).

If the spindle is locked, you may have to unlock it to manually orient the tool tooth over the probe stylus.

To measure the tool length:

Jog the tool to the top of the probe stylus so that the tooth that sticks down the furthest is directly over the center of the probe stylus.

From the Manual Data Input Mode with G-code MDI selected, type G152 Tn Dd and touch the Start button. Where T is the tool number and D is roughly the diameter of the special tool. For example, G152 T3 D3.5.

The spindle turns on in reverse and the Z-axis should go down and touch the top of the probe stylus keeping the X and Y position the same, then rapid up 0.02" (0.508 mm) and then retouch using the slow feedrate programmed in the machine setup parameter. The cycle then updates the tool-length offset register clearing any value in the length wear register, turn the spindle off and return the tool to the Z height where it started.

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

210 7 Programming: Canned Cycles, sub-programs