Drilling: Change at Point - Jump Hgt

[Roger Martin from CNC Software]

All,

 

I am looking for your esteemed opinions on the following subject:

 

Drilling –> Change at Point –> Jump Hgt.

 

As you may recall, in v9.1 when you tagged a Jump Hgt. change to a drilled point you got a “double point jump”. The first move to this jump height occurred before the selected point and the Z stayed at this level until after the selected point.

In X this double jump is to be eliminated (this is a good thing).

 

This question of the day is this ->

Imagine you have 6 points to drill and you need to clear (jump over) an obstruction between Point #3 and Point #4

 

When you tag a Jump Hgt (using Change at Point) onto a drilled point, should...

 

Choice #1 ->

The move to the Jump Hgt will occur after that point has been drilled.

Means you would make the Jump Hgt. change by selecting Point#3

 

Choice #2 ->

The move to the Jump Hgt will occur before that point has been drilled.

Means you would make the Jump Hgt. change by selecting Point#4

[mayday]

is this the last thing to be decided upon before releasing X

[Roger Peterson]

Looks like you have an easy decision ahead of you Roger...

 

 

I just checked the results and it's all even.

[Keith Graydon]

choice #2 Beacause Im usually looking aheadto the next position (or obstacle)

 

Then make a dropdown for more options

[Roger Martin from CNC Software]

MayDay,

 

I already know the method I consider to be correct!

 

But since others may think differently , I thought it appropriate to ask the forum members to share some of their vast knowledge (and heartfelt opinions) on the subject.

[Jack Mitchell]

Roger,

 

What about making a flyout box available to the programmer that nags the question. I know that it doesn't make much sense at your end or even at my end considering the frequency and the questionable practice.

 

In other words - If the programmer selects a point that varies from the current "Z" level or plane, would it be possible to establish the flyout.

 

Another question back at you is - what exactly are the competitors doing within their software packages that might address this question?

 

Regards, Jack

[Roger Martin from CNC Software]

Jack (and All),

 

This is something that there would not by an “on the fly” choice.

It would work “this way” or “that way”. Now you have a known rule so that the programmer knows what is going to happen.

 

I am a bit suppressed with the slight lead for Choice #2.

Especially since the Choice #1 method was how it worked in Mastercam prior to v9!

 

Seeing Keith’s response I’m wondering if the way I worded that Choices has skewed the results. If you are looking ahead would not you want Choice #1 ?

 

Choice #1 =

I drill Pt#3.

Looking ahead, I know that I need to pull up the drill extra high since an obstruction is coming up. So I tag a Jump Hgt change here (on the Pt#2 location), so the tool jumps up.

Now move on to the following (Pt#4.) position.

[mayday]

I lean to Keiths idea.

i just drilled this hole and I need to clear the clamp going to this (click) hole. in change at point in contour when switching to rapid from 1 point to another it always seems strange to me to select the point at the end of rapid move. this may contradict what I said about jump hieghts, but then, who says Im sane

[Charles Davis]

I think choice #2. As I ponder a drill hole, I am concerned with how I approach the hole, not how I depart it.

 

That is, my mental focus is on hole #4. How do I get there? Do I need to clear any obstacles?

 

On the last hole, I'm not concerned about how I leave the area at all, since I retract to home.

 

Maybe this is just how my mind works, but I think the v9 way is confusing.

 

If the vote is close at all given v9 worked the other way [and people have been conditioned to it think the other way] I think argues that most think as I described above; we must all have a strong intuitive drive to think as I've described.

[J Coulston]

Option 1

Drill point 3

Retract to Jump height

Rapid to point 4

Drill point 4

 

Option 2

Drill point 3

Rapid to point 4 crash thru clamp

Retract to jump height

Drill Point 4

 

Once I am at point 4 the clamp has already been past.

[Camdude®]

option #1,

i want to clear clamp, strap, obstacle etc. before moving to new point. i like placing the jump height on the hole before the move. that way it works like it always (except V9 ) did. legacy users would have an easier time dealing with this if option #1 was considered.

[Charles Davis]

When you drill the very first point, you focus on it, and how the tool got there.

 

I think this sets a pattern for dealing with all the other holes; when you look at the second hole, you consider how the tool got there, etc.

[Tim Johnson]

I would like to see is a choice for a physical jump or use the "G98" (clearance plane) for point #3 and then back to "G99" for point #4. (chosen at point #3)