Time calculation in backplot

[JPensack Acker Drill]

Does anyone use the backplot feature to estimate machining times for quoting? I am tring to make a prototype and get a quote before its even machined, but my times seem too fast. It also does not have times for certain operations. When I look at my min/max feed at the bottom for the ops with no time it is just .0000000000 but in my toolpath parameters they are all right. If anyone has any experience it would be appreciated.

[EZ3PUTT]

I have seen drill routines greatly increase backplot times compared to actual cycle times. Not sure why. I used to use it often in the past to determine cycle times but found that if I backplot everything but drill routines it was more accurate.

[Ocean Lacky™]

I don't think backplot can calculate a Canned Cycle drill program. If you want closer to accurate drill cycle times it needs to be coded long hand if memory serves.

[Matthew Hajicek - Singularity]

I use the run time estimation feature of NCPlot.

[Guest CNC Apps Guy 1]

Some things Backplot can't comp for is Acc/Dec, Control Block Processing Time and pecking in drill cycles.

[Jammer™]

+1 James.

I do a lot of 4 axis work. I can backplot the whole job minus the rotary axis chamfering and get a pretty close time. Whenever the rotary axis chamfering ops are included I always get around a 5 min cycle time.

[Toby-Axis]

I second the use of NCPLOT. I use it with BOBSCRAP v21, v22 along with Predator Virtual CNC for fairly accurate cycle times. Granted BOBSCRAP/CRAP is extreme LOW END CRAP WEAR, my seat of PVCNC is why I never requested a refund.

 

As a note PVCNC calculates cycle time for Canned Canned Cycles, even peck drilling cycles G73 and G83.