Curious on how these stations, AB BB surfaces work to creating a blade
sketch points with coordinates given, make a spline using point, make a 3-point arc using end sketch points. then make it a block, set an insertion point. insert block onto each plane of the blade. explode block, change values of sketch points, rinse and repeat for the other 2 sections. then use the loft boss, make sure to select the same point in each sketch to make it look ok.
Message was edited by: Michael McKee
i work at an industrial air movement company with many many different fan blade designs. we had actually submitted one of our old autocad drawings and even some hand drawings to 3DS to get some input as to how to go about modeling it. as far as i know we have yet to come up with an answer. i believe its the "rolled axis" that throws a wrench in the modeling process. sorry no useful input, just curious to see what ideas come up.
Well thanks for replaying it makes me feel alot better like im not loosing my mind because these old drawings are 20 years old & i have no idea of how to model these.
I would try using the Curve Through XYZ Points function to create the separate profiles, and then Loft through the profiles.
we have a couple modeled up, but their accuracy is greatly questioned...lol
we went and grabed an actual blade from our foundry after being poured, and physically cut it at the dimensions locating each section view in your drawing.
then used offset planes and sketches on each plane (shown below) to ultimately use the "lofted boss" tool.
Thats wha i did its jus looks wierd because each station of the blade has slight differences but i kno i didnt do this all the way properly
This pic here is a picture of the fan, im not good a lookin a section views im not sure it looks like its almost a hollow parth but it has alot of dimension in the side view lil confused? pointers??
that drawing look legit. i'm not sure what youre asking here
thanks whats a block? and im not sure how to plot the coordinates, never used negative values ?
you can look in the help on how to make a block. here is how you plot the sketch points..
thanks so much, your a life saver
You should also be able to just copy and paste your sketch from the first plane on to the others without making a block. You will get a question about whether or not you want to let dimensions dangle or delete them. I usually check dangle, then if reconnecting isn't feasible I can delete them.
Also, for your splines use as few points as possible. Too many points can actually make it harder to control the curve.
when there is a chart with specific X-Y coordinates, you need to lay them out as such.
ThAnk, now when you click on one pont you have an x&y value in parameters, how do you set the parameters for boths dots in a spline, like if they parallel, would they both have the same parameters?
do you jus make both splines equal?
each dot represents one point in the chart you posted for the blade sections. you have to set the X-Y values for each point, according to the values in your chart. once all values are set, you can set the points to "FIXED" in the relations.
Thansk so much michael this definitely was a gr8 help, i have a better understandng of how the coordinate system on solids, cause these drawings that i have are old so most of them have thos x,y plots. In another drawing im working on it only has coordinates for 1 surface (Side) not both, how would i approach that? thanks again for all the help
i would have to see it...
ok i jus attached a picture
make your spline using the X-Y dimensions, then offset the spline the thickness of your material.
Have you looked at using the Curve Through XYZ Points function?
that would work as well. but the number of curves that may be needed could become quite alot....just sayin'
??? There are 8 curves (2 surfaces for each of the 4 stations). Rather than input each point separately, all the co-ords for each surface just need to be typed into a text file and then be selected in the XYZ tool.
i will give it a try thanks kelvin
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