Good day. Just want to check with you guys on how can i dimension (on the drawing) the arc of a blade? Your response is greatly appreciated.
Please see attachment.
Well, there are a couple of different ways:
1) If it is a spline (which I suspect that it is), then you might have to fit an arc over it in your drawing and then dimension to that.
2) If that is not accurate enough, and the manufacturer has the capability to read 3D data (like a CNC programmer), then you might want to use a note like:
"Use 3d Math data to manufacture this item", then give it a profile tolerance.
I have done that before when the geometry is highly complex.
Just make sure that you are dimensioning critical surfaces.
3) Another way is to use multiple section views of the blade, then create a graph for the X points at different Y points. Basically, you would be generating a list of X,Y points in a particular section view at regular intervals (say .25" apart or closer if you need more accuracy).
Create a 3D sketch of the edges you require...
can you then dimension that 3D spline??
Thak you on your response. Still cant do the dimensioning using 3D sketch.
It can only dimension the individual plane but not the 2 or 3 plane drawing.
The sketch were created as an arc. After extrusion, I have used the Flex feature, so I'm having more than 2 plane, so I cant put any dimension on the geometry after the flex.
Edward Gines wrote: Hi DanThe sketch were created as an arc. After extrusion, I have used the Flex feature, so I'm having more than 2 plane, so I cant put any dimension on the geometry after the flex.
Edward Gines wrote:
Yes, I understand that, which means that it is coming in as a spline in the drawing.
So, for #1 above, in the drawing, fit an arc over it and dimension that....basically you will be creating a sketch object at the drawing level and putting a dimension on it. I don't really like the option, but it is an option.
For # 3 above, I was talking about something like this (see attached PDF file). (disclaimer, this was done quickly to show the example....it is not what I would call a finished product. LOL).
Great, I think creating new arcwould be the best option.
If it's true arc, then you can simply add radius dim; otherwise, use profile GDT for any spline curve
Thank you so much gurus. Great input indeed. Will apply your advice.
Does any response answer your question?
will try all later once I reach office. Cheers!!
I created 3d arc, but its quite difficult to trace the twisted arc.
Is there any chance of having the reference dimension linked to the length of an arc. I mean once I have twisted of used flex feature, the reference dimension will automatically changed?
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