NC reversing tapping heads

[dolphin1]

looking for help/recomendations on dealing with a reversing tapping head.

 

does anyone have a custom drill cycle to add to a post to output the code so i dont have to hand write this. want to use a sub program format.

it needs a fast retract for .150 up from depth tapping to then feeds out at 1:1 from there back to clearence.

 

this is for a Haas mill.

[Josh T™]

There is a parameter in the Haas control for Tap Retract Multiplier - Set it to 1 (which means it will retract at the feeds and speeds it entered) and use a G85.

 

HTH

Josh

[dolphin1]

you need a retract feed of 500. for .150 up from the tapping depth then it returns to the same feed it went in.

 

as for your comment you can also do the same thing by adding a E comment to the g84 line and not changing the settings.

[Superman]

Using a head that automatically reverses means you CANNOT use a standard Mastercam or Machine tapping cycle or a cycle that doesn't utilise a rapid motion with the toll in the part

 

You should use the "Ream" cycle with little or no dwell where the retract is also at feedrate

 

Caution---you should also disable the feedhold button when in this cycle, re-enabling after each cycle

[dolphin1]

actually you can use a boring G85 cycle but its recomended to do a sub routine. that way you can get the fast retrat for the first .150 distance then use the same feed as going in.