Holemaking Basics

Hello guys i’ll discuss spot drilling using the hole making commands we have some customers that are using the spot drilling command and then copying and pasting that assigning a different tool and using it for drilling and while that works the spot drilling and drilling commands are actually not the same there are some additional parameters and options in drilling that are very useful.

Let’s create our first operation and this will be our spot drill i’ll pick up a quarter inch center drill and the first thing we must do the is select the feature geometry.

The top of the blank the this hole is doing something different it’s down deeper in the the material and in fact what NX does and is look at the highest point of the holeand that’s what it calls Z

Zero then how does it get that depth that’s this number right here it’s just soft of a default that the spot drilling command uses with English unints so if i want to change that i can do that right here with predefined depth.

I’ll make a change to 500000 so it’ll be just half the depth it is now and so you can see quickly then that those cones become smaller and where does it get the angle of the cone it’s actually deriving

Perhaps more importantly that that is what is the logic that caused it to begin it’s drilling down here at the top of the hole when we might want to drill from the top of the blank. That is this setting at the very top the in process workpiece it’s currently se to local and i want to change that to use 3d then you see both of those holes pop up to the top of the blank and that’s probably what we would use in this situation.

So that’s the key understanding of how NX thinks about these holes is using either the 3d or the local for the in process workpiece

I’ll click OK and generate and there’s our tool path all