Top of Stock MC 2019

[jim1960]

I am trying to drill a spot drill  that will be -.8 from the original top of stock, as I have milled the material down that far.

I set my drill linking parameters  as I have in the past indicating -.8 for top pf stock but MC wants to drill the hole at Z zero not Z -.8. 

Am I confused ?

Thanks

Jim

 

[Colin Gilchrist]

Set your retract to Z-.7 Absolute. That is .100 above your new TOS. Then use Clearance if you need it, to be the point where your TLO is enabled.

[Colin Gilchrist]

The G81 line only contains the final Z depth, and the "return plane" (R value). G98/G99 determines if the drill moves between holes at the Initial Point level (Z depth prior to calling G81), or at the Return Plane level...

[CJep]

18 hours ago, jim1960 said:

I am trying to drill a spot drill  that will be -.8 from the original top of stock, as I have milled the material down that far.

I set my drill linking parameters  as I have in the past indicating -.8 for top pf stock but MC wants to drill the hole at Z zero not Z -.8. 

Am I confused ?

Thanks

Jim

 

If you are working from the settings you have currently in the linking parameters the depth is actually telling the Z axis to move in a positive direction. The TOS is set -0.800 below your Z zero, your depth is set to send the tool to -0.050 below Z zero. To get this to drill another 050 deeper at the -0.800 you would need to either set it to -0.850 absolute or if the geom in Mcam is already located at the -0.800 leave the depth in the tpath set to -0.050 and switch to incremental.

[Mark VIII]

He can leave the retract point at .1" but change it to "incremental". The retract is based upon the "top of stock" position and not the point selected.