zero piece on crude

[skia51]

hello to all
I write even though I noticed that the last messages on this forum are very old, but I hope someone can help me.
in practice the situation is this, when fixed the origin of the piece on solidcam, this position it considering the finished piece, while the operator on the machine will position the origin on the crude that has larger dimensions, how to overcome this inconvenience? is there a way to place the origin on the rough and not on the finished piece?
Thank you.

 

[Vittorio]

the thing is simple and normal administration for all cams.
the operator in creating the origin on the cnc must consider him the crude and set the origin considering the overmetals.
Usually, to facilitate the task and avoid errors, it is useful to create the cnc origin at the center of the x size and at the center of the y size.
so doing the overmetals are automatically balanced and there is no possibility of error.
As far as zeta is concerned, it should be considered to be possible to overmetal zeta. .
example if the finished piece is high z=50mm and the crude is z=52mm.. If you want to create the zeta origin on the upper floor, the operator must set the z cnc to 1mm under the upper floor.

 

[Vittorio]

the origin on the rough and not on the finished piece?

What you want to do, doesn't make sense.
if you think about it.. how does the tool path consider the crude? if its origin is exactly at an extreme of the same?
It would mean that that side will always be rough.

 

[skia51]

What you want to do, doesn't make sense.
if you think about it.. how does the tool path consider the crude? if its origin is exactly at an extreme of the same?
It would mean that that side will always be rough.

Sorry I'm new to the cam world
but it seems normal to have to fix 0 on a physical point so that the operator, through the tactor, can "direct" to the machine where the piece starts to work, the processing will follow the system of reference created. If the point is to a slightly different coordinate it will be the task of the operator to change them with the risk that makes a mistake.
I will be inexperienced but, again, it seems normal to fix the origin on the crude.

 

[Vittorio]

We specific. .
there are 2 crude
1) virtual rough which is what generates your cam and where you establish the size by increasing them.
2) real crude that is the material you received and will never have the size of what you planned in the virtual

Now :
if you have a finished piece with x100 y100 z50 size..definite your virtual rough x105 y105 z55
but you still don't know how much your real flock will be.. right?
Your rough real may have size x108.7 y 107.5 z60.2
so the cnc operator how will he create the origin on his cnc?
will make considerations on the size of the finished piece and according to the size of the crude real will create its origin on the cnc so that its piece comes out completely at the end of processing.

therefore the origins cam always do on the finished piece. and the operator will make its considerations with overmetals

look on youtube.. There are endless demos on solidcam and what you ask does not exist.

 

[Vittorio]

ps:
If you read my post #4 carefully you realize that the best system to avoid overmetal errors is to create the cam origin in the middle of the piece.
the operator on the cnc will do just as putting its origin in the center of its crude real.so doing there are no errors of considerations.
Since you're new to the cam, if you don't understand the concept. you should talk to the cnc operator or a workshop manager

 

[asblo]

It's like victorious. ideally you must provide the operator with the finished design indicating where you entered the zero of the program. then he must manage the zero piece "touching" with the tool as you said and taking into account how much overmetal he used. the overmetal of the operator is not defined, it can cut pieces by sawn or use already cut roughs for convenience.
said this, the origin of the piece on the cam is editable and you can insert it wherever you want