I have run the very simple string below thousands of times on my milltronics and bridgeport with zero problems and somewhere around 150-160 times on the new HAAS but for some reason a few minutes ago the HAAS just decided to skip the tool change from T15 , a center drill to T30 which is a 3/32 drill bit thats aprox 2" longer than the center drill.
Machine didnt change tools and as a result destroyed 10 parts with the tool holder and damaged my fixture. The fixture is repairable and the damaged parts only set me back a little over $500 , my main concern is why would the machine have skipped a tool change ? I want to have confidence that I can leave it to run un attended for long periods . Parts lost today were cheap , but I do on occasion machine injection molding dies that run 40+ hours machine time that I cant so easily afford to scrap.
What might have caused the machine to ignore the tool change ?
G57
(MOVE BACK TO TOP TO DRILL)
(Tool 15 = CENTERDRILL)
N1 T15 M06
M08
M03 S3000
G00 Z1.1 G43 H15
N2 G81 X3.9077 Y-0.331 Z-0.1 R0.1 F12.
N3 X7.1077
N4 X10.3077
N5 X13.5077
N6 X16.7077
G80
N7 G00 Z0.1
N1 T30 M06
M08
M03 S5000
G00 Z1.1 G43 H30
N2 G83 Q0.1 X3.9077 Y-0.331 Z-1.1 R0.1 F18.
N3 X7.1077
N4 X10.3077
N5 X13.5077
N6 X16.7077
G80
N7 G00 Z0.1