Hi, I have a VMC-15, running Format 1, teaching myself as I go.
I wrote a program to spot drill, pilot drill, tap-drill and then tap a 1/4-20 thru hole, as a self-teaching project.
I do not have rigid tap, running a Lyndex quick change floating holder. (bilz style)
The tap is Tool 5. I have H5 setup to be 0.5" above the part surface as recommended in the manuals.
So I have
E1 X1.0 Y-1.0
(the other operations, then)
G84 Z-1.0 F250. Q0.05 G99
The other operations work perfectly. However when the tap is in the spindle, the result is the tool goes to H5. Spindle never turns on, it rapids to absolute Z=0 then proceeds to go Home.
Earlier, I had H5 at 0.1" above the part. Then I did a G91 G1 Z0.4 F400 with the idea I was setting up the R0 plane (last Z location before cycle). The machine interpreted that as G90 G0 Z0.4 (absolute Z=0.4) before it went Home. So I felt like I was doing double movement plus it did not work, so I took out the G91 G1 and just adjusted the H5 offset up 0.4" in the tool table.
I feel like a muttonhead but can't see what's wrong...hoping one of you experienced gents can help me please. Thanks in advance!
BTW, I should also add I did the "lighting upgrade" to my machine, similar to Scadvice "7 year rebuild" - ran #14 THHN thru the cabinet, the twin 65W fluorescent fixtures are less amperage than the 150W single incandescent I previously had, its cool and BRIGHT in there now Thanks for that tip!