est. times in backplot

[billet programmer]

i'm using version x mr1. when tapping the est. times in backplot are way off. i assume that this is due to feed per rev. is it possible to get a better estimate without converting everything to ipm?

[Allan Brown]

You should get your post to use n_tap_thds$ from the tap def for feed/rev output:

 

code:

---

if met_tool$, pitch = n_tap_thds$  # Tap pitch (mm  per thread)

else, pitch = 1/n_tap_thds$ # Tap pitch (inches per thread)

---

Then just let the feed calc in Mastercam from the tap info and spindle speed, and leave it alone. Cycle time estimates will improve.

[billet programmer]

sounds good, thanks

[Allan Brown]

right - then use "*pitch, !feed" in ptap rather than "*feed"

 

that way pitch outputs, feed updates (!), all is good in Tapland.