replace sketch to an existing function

[Onda]

Good evening to all of you.

today I was changing the model of a fairly complex part, where I had reused a sketch of a previous extrusion in a later function (shared disk). for a change to the model I found myself having to disconnect the two functions between them, that is to make the second function use a sketch different from the first.
Unfortunately the second function (a revolution), is very high in my feature tree and remaking it involves a long job.
I couldn't find the way to replace the sketch of an existing function and had to remake the ex novo function on a new sketch and then change all the later functions that called it into question.
Does anyone know if it is possible to replace the sketch that originates it?
use sw2009
Thank you.
wave

 

[marcof]

Good evening to all of you.

today I was changing the model of a fairly complex part, where I had reused a sketch of a previous extrusion in a later function (shared disk). for a change to the model I found myself having to disconnect the two functions between them, that is to make the second function use a sketch different from the first.
Unfortunately the second function (a revolution), is very high in my feature tree and remaking it involves a long job.
I couldn't find the way to replace the sketch of an existing function and had to remake the ex novo function on a new sketch and then change all the later functions that called it into question.
Does anyone know if it is possible to replace the sketch that originates it?

I do not believe that it is possible, even because the sketch to which the features they share is always the same. If you delete it or change it you do it for all features.
But you can try, if you allow the type of modeling you have done, to pull up the insert bar until the feature (excluding) to which you have to change the sketch.
delete the feature and make it again, obviously creating the new sketch as you need.
carry the insert bar at the end of the story
of course the feature immediately below that rifatta (and maybe even some after) will have some error, probably in the sketch (wins, quotas etc at tops or edges that are no longer there because created by a new feature) that you can quickly correct without need to remake all the features downstream of that with the rifated sketch.

I use shared kinks if I am 100% sure that the various features must be created always give a sketch. identical.
in case of doubt I prefer to use the sketch to the hype of a new projecting its geometry with converts entities. if then the change of the father sketch is to eliminate the constraints "on the edge" unsolved and then the place is all.

 

[Onda]

Hello marcof,

thanks for the answer, the modification that you propose is what I did, but not canceling the offending feature as it would have erased me also the next employee features, but suppressing it, remaking it a new one and then going to change the next to reconnect to the new feature.
I was wondering if there is a faster and more practical system. I thought that as I can change the sketch plan to an existing sketch, I could have changed the sketch to an existing feature. It's obviously not like that.
thanks to the answer
greetings
wave

 

[Mike1967]

Hello marcof,

thanks for the answer, the modification that you propose is what I did, but not canceling the offending feature as it would have erased me also the next employee features, but suppressing it, remaking it a new one and then going to change the next to reconnect to the new feature.
I was wondering if there is a faster and more practical system. I thought that as I can change the sketch plan to an existing sketch, I could have changed the sketch to an existing feature. It's obviously not like that.
thanks to the answer
greetings
wave

to prevent "fathers" from affecting the existence of "children", you must have the shortness to avoid references to sketches or geometries existing in the same part.
it is not easy to implement but you can do it.

 

[Onda]

Thank you, mike.
It's not my goal to work out between one feature and the other.
I was trying to figure out if a sketch was replaceable with another one.
I would undoubtedly say that it is better to project the first sketch on the second rather than to share it, this always allows to change the function rather than having to start from the top
wave.

 

[marcof]

Hello marcof,
thanks for the answer, the modification that you propose is what I did, but not canceling the offending feature as it would have erased me also the next employee features, but suppressing it, remaking it a new one and then going to change the next to reconnect to the new feature.

but not that it does not erase you.. .
you will see the dialog box that asks if you want to delete even feature daughters and sketches absorbed; you put the flag on the option to keep them.
I suspect that you do not see the dialog box because at some time you have flagged the option of not repeating the question again. in case you go to document options on advanced and reactivate it.
you do not need to suppress it, just delete it with these set options.

I thought that as I can change the sketch plan to an existing sketch, I could have changed the sketch to an existing feature. It's obviously not like that.

if you think about changing a sketch means doing it again, which then you would reclaim it by erasing all the geometry and tracing it again or delete it and then make a paste copy from another sketch the substance does not change. if you replace it with an existing one means sharing it, then different features lean on the same geometry and you're from top.

 

[marcof]

I would undoubtedly say that it is better to project the first sketch on the second rather than to share it, this always allows to change the function rather than having to start from the top

it is advisable, especially if the new sketch corresponds to the projected one with addition of new geometry and/or elimination of projected geometry.
if you have to do it again from scratch is not very different from deleting the feature. Maybe it frightens the idea of deleting the feature, but when the feature is without sketch geometry it is like having erased it. let's say that when you delete everything you have to remember the settings of the function (extensions, angles etc) to remake and it's a bit a break.

 

[Onda]

I suspect that you do not see the dialog box because at some time you have flagged the option of not repeating the question again. in case you go to document options on advanced and reactivate it.
you do not need to suppress it, just delete it with these set options.

It can be great. Once you set the option then you don't get back and forget it.

if you think about changing a sketch means doing it again, which then you would reclaim it by erasing all the geometry and tracing it again or delete it and then make a paste copy from another sketch the substance does not change. if you replace it with an existing one means sharing it, then different features lean on the same geometry and you're from top.

I don't really agree. I would have been useful to replace the sketch shared to a function with a new sketch, which at first would recalcate it and then would have left me the willingness to change it slightly. In any case, it is useless to discuss what is not, unless you ask for the next versions.
Thank you.
wave

 

[SolidUser]

What you ask does not exist.
the possibility you have and that you create the new sketch inside what generated the feature and with the command 'select contours', select the new group of entities, excluding the other.
since it does not exist as a function, but mine is just a workaround, you will later have to reconnect what is different.
each edge, face, edge have an internal sw id, so if you pass from n faces to m faces, the difference can lead to errors on later functions.
depends on the complexity of the model, it may also go fat and do not display any error.

 

[Mike1967]

Thank you, mike.
It's not my goal to work out between one feature and the other.
I was trying to figure out if a sketch was replaceable with another one.
I would undoubtedly say that it is better to project the first sketch on the second rather than to share it, this always allows to change the function rather than having to start from the top
wave.

as I have already pointed out, it is not always feasible without paying out, however try to help you with the blocks.