We have a job that needs 400+ 3/4-10 and 5/8-11 holes threaded in 0.75” and 1.50” mild steel.
For the 3/4-10 holes I am drilling with a 16.5mm spade insert drill as I have TSC. (Never used a spade insert drill before) Using a spiral flute tap, I don't see an issue tapping the 0.75” plate in one go, but on the 1.50” depth hole I am not sure. Thinking G84 peck tapping to help the tap last. Never tapped holes this large.
For the 5/8-11, .539 carbide drill with TSC, spiral flute tap, straight through the 0.75” but again on the 1.50” material wondering if peck tapping would help the tool last.
I can speed up the retract with the 130 settings, I have done that before. But never used the G84 cycle before. Of course the battle of speed vrs tool life. No idea how long the taps will last, I just don't have the experience with this size tapped holes in mild steel. Sure don't wish to brake off a tap.
Machine:
2022 Haas VF2SS
Any suggestions? Depth is no issue, just run it? Using G84 maybe it causes extra ware since it’s touching the threads 3x or 4x?
I appreciate it.
For the 3/4-10 holes I am drilling with a 16.5mm spade insert drill as I have TSC. (Never used a spade insert drill before) Using a spiral flute tap, I don't see an issue tapping the 0.75” plate in one go, but on the 1.50” depth hole I am not sure. Thinking G84 peck tapping to help the tap last. Never tapped holes this large.
For the 5/8-11, .539 carbide drill with TSC, spiral flute tap, straight through the 0.75” but again on the 1.50” material wondering if peck tapping would help the tool last.
I can speed up the retract with the 130 settings, I have done that before. But never used the G84 cycle before. Of course the battle of speed vrs tool life. No idea how long the taps will last, I just don't have the experience with this size tapped holes in mild steel. Sure don't wish to brake off a tap.
Machine:
2022 Haas VF2SS
Any suggestions? Depth is no issue, just run it? Using G84 maybe it causes extra ware since it’s touching the threads 3x or 4x?
I appreciate it.