Manufacturing Information Solutions

[franke]

If you have a CNC tilting table on your mill you have probably overloaded it and caused it to move off location. This macro uses your spindle mounted probe to verify/set the table to 90 degrees. This macro verifies that the current G55 X, Y and Z values are appropriate before probing. This is done to prevent damage to the probe if the coordinate system is set wrong. You will need to modify the values in the macro to fit your machine's configuration but the effort is worth it if it prevents one crash of the probe.

For example:
IF[ABS[#5241+32.984]GT.2]GOTO997 checks to see if G55 X is within .2 of 32.984 which is the X center of the tilting table. If the coordinate system has been changed by more than .2, the macro will jump to an error message. Change 32.984 to match the table on your machine. T30 is the tool number of the probe, modify it to fit your application.

This table has a rotary and a tilt axis and the tilt axis is programmed as the B or 5th axis. The macro uses #5245=#5245-.5 to force a .5 degree error in the table's tilting axis. This is so that I'm not doing trig on very small values. Most machine control's recommend against using trig functions on very small values. In this example, Z zero is the center of rotation of the table and the probe uses Z values that are 2" apart. This program typically sets the table to within a couple tenths in 2 inches.