| Author |
Message |
Gil Alsberg
Guest
|
 Posted:
Tue Nov 29, 2005 5:10 pm Post subject:
extrenal references - please help me understand |
|
|
In my continuous mission to explore far galaxies, I stumbled on the top-down
assembly construction method explanation on the sw2006 help documentation.
so please correct me if I'm wrong:
"external references on parts can be created only in the top-down modeling
technique by referencing a new feature or sketch in a new part to an
old/already-existing one which is open simultaneously on the same assembly
(part modeling within assembly modeling)."
is this statement true or false?
please help me remove the dust in front of my eyes!
thanks,
Gil
|
|
| Back to top |
|
 |
Gil Alsberg
Guest
|
| Posted:
Tue Nov 29, 2005 5:10 pm Post subject:
Re: extrenal references - please help me understand |
|
|
sorry, but I still don't understand:
is it possible to reference a part in an assembly externally using regular
assembling by entering existing parts? (traditional bottom-up assembling)
or is it only possible when creating a new part inside an assembly which
already has at least one part? (top-down assembling)
"That70sTick" <rol4@liquidschwarz.com> wrote in message
news:1133276472.455388.222530@o13g2000cwo.googlegroups.com...
| Quote: | Forget what they wrote and say to yourself, "Well, duh, how else would
one do it?!".
If one part has entities that are constrained to another part, where
would these constraints be made? In an assembly, of course. You can
not convert (another part's) edges in a sketch or extrude to (another
part's) surface or plane unless the two parts are residing in the same
assembly.
As far as the new part-old part thing, basically SW is trying to tell
you that if part "A" references part "B", then you shouldn't also have
part "B" reference part "A".
|
|
|
| Back to top |
|
|
That70sTick
Guest
|
| Posted:
Tue Nov 29, 2005 5:10 pm Post subject:
Re: extrenal references - please help me understand |
|
|
Forget what they wrote and say to yourself, "Well, duh, how else would
one do it?!".
If one part has entities that are constrained to another part, where
would these constraints be made? In an assembly, of course. You can
not convert (another part's) edges in a sketch or extrude to (another
part's) surface or plane unless the two parts are residing in the same
assembly.
As far as the new part-old part thing, basically SW is trying to tell
you that if part "A" references part "B", then you shouldn't also have
part "B" reference part "A".
|
|
| Back to top |
|
|
Gil Alsberg
Guest
|
| Posted:
Tue Nov 29, 2005 9:10 pm Post subject:
Re: extrenal references - please help me understand |
|
|
Jeb, thank you for your reply. it helps me get a better picture on this
subject which I'm awfully unfamiliar with.
"JEB Davis" <Jon_Beland@hotmail.com> wrote in message
news:1133286140.349038.30740@f14g2000cwb.googlegroups.com...
| Quote: | Of course, after placing the previously made parts in the assy, you can
then make external references to them from other parts in the assy.
|
|
|
| Back to top |
|
|
TOP
Guest
|
| Posted:
Tue Nov 29, 2005 9:10 pm Post subject:
Re: extrenal references - please help me understand |
|
|
The statement is false, but contains some truth. It is false insofar as
external references on parts can be created through splitting a part,
deriving a part or mirroring a part as well as through an assembly. If
the context of the statement was within assemblies then it is true.
Thinking back to the days of tracing paper, an external reference is
like making a drawing of a part by placing tracing paper over the
layout and getting key features through the tracing paper. The part
getting external references can be an existing part or a new part. See
the post a day or so ago about removing external references. |
|
| Back to top |
|
|
That70sTick
Guest
|
| Posted:
Tue Nov 29, 2005 9:10 pm Post subject:
Re: extrenal references - please help me understand |
|
|
Forget "top-donw" and "bottom-up". An external reference is simply
when a feature or sketch in one part is dependent on an entity in
another part. In nearly all cases, this dependence happens in an
assembly, with one component referencing another. |
|
| Back to top |
|
|
JEB Davis
Guest
|
| Posted:
Tue Nov 29, 2005 9:10 pm Post subject:
Re: extrenal references - please help me understand |
|
|
Of course, after placing the previously made parts in the assy, you can
then make external references to them from other parts in the assy. |
|
| Back to top |
|
|
Gil Alsberg
Guest
|
| Posted:
Tue Nov 29, 2005 9:10 pm Post subject:
Re: extrenal references - please help me understand |
|
|
thanks, TOP, that clarifies allot. good point on part splitting/mirroring.
"TOP" <kellnerp@cbd.net> wrote in message
news:1133286859.936253.100090@g14g2000cwa.googlegroups.com...
| Quote: | The statement is false, but contains some truth. It is false insofar as
external references on parts can be created through splitting a part,
deriving a part or mirroring a part as well as through an assembly. If
the context of the statement was within assemblies then it is true.
Thinking back to the days of tracing paper, an external reference is
like making a drawing of a part by placing tracing paper over the
layout and getting key features through the tracing paper. The part
getting external references can be an existing part or a new part. See
the post a day or so ago about removing external references.
|
|
|
| Back to top |
|
|
Gil Alsberg
Guest
|
| Posted:
Wed Nov 30, 2005 1:10 am Post subject:
Re: extrenal references - please help me understand |
|
|
let me rephrase:
how do one create external references within bottom-up assembly? (I know how
to do it on top-down but not on bottom-up)
thanks,
Gil
"That70sTick" <rol4@liquidschwarz.com> wrote in message
news:1133290321.537497.194450@f14g2000cwb.googlegroups.com...
| Quote: | Forget "top-donw" and "bottom-up". An external reference is simply
when a feature or sketch in one part is dependent on an entity in
another part. In nearly all cases, this dependence happens in an
assembly, with one component referencing another.
|
|
|
| Back to top |
|
|
JJ
Guest
|
| Posted:
Wed Nov 30, 2005 9:10 am Post subject:
Re: extrenal references - please help me understand |
|
|
Please check the SW help file under.
Searching for Referenced Documents
This helped me a lot.
Kind regards,
Jan Jurjen
TOP schreef:
| Quote: | Any part mated in an assembly can have external references created WRT
other parts in the assembly. In fact when a part is created in an
assembly a special inplace mate is created to hold it still while
references are made. So for example, when doing bottom up modeling,
mate a piece of "precut" sheet metal into an assembly. Locate some
matching holes and cut them while editing the part in the assembly.
Then open the part outside the assembly and remove references and
create dimensions automagically. |
|
|
| Back to top |
|
|
TOP
Guest
|
| Posted:
Wed Nov 30, 2005 9:10 am Post subject:
Re: extrenal references - please help me understand |
|
|
Any part mated in an assembly can have external references created WRT
other parts in the assembly. In fact when a part is created in an
assembly a special inplace mate is created to hold it still while
references are made. So for example, when doing bottom up modeling,
mate a piece of "precut" sheet metal into an assembly. Locate some
matching holes and cut them while editing the part in the assembly.
Then open the part outside the assembly and remove references and
create dimensions automagically. |
|
| Back to top |
|
|
|
|
|
|
FAQ
Memberlist
Register
Profile
Log in to check your private messages
Log in