turbine blade

[micknat]

Hello everyone,
I'm reverse engineering a turbine blade. I have the complete external/internal stl available, thanks to coupled optical/tomographic scan. I have a problem with cooling holes. the shovel has an internal serpentine and this is communicated with the external surfaces of the shovel through a myriad of holes to allow the cooling.These are images downloaded from the web, but give an idea of my problem (in the sense that I have many more holes). the holes are presented according to "pattern" arranged almost as the isoparametrics of the external surfaces (and I emphasize almost), their axes have "costant" angles regarding the surfaces and some files have non-cylindrical forms. I look for suggestions for the parametric realization of these holes: Maybe by building the floor surfaces with comfortable patterns to generate and then transfer them to the real surfaces to execute the trim... I wouldn't want to build them one by one... Is there anyone who wants to give me advice?

 

[gianni55]

I never did, but no one answers, and then I try...

if you have the right license, in generative shape design (workbench shape developed) there are the commands develop in floor a surface, and transfer you could then:

01) with the command develops in plan: extract and develop the surface of the shovel attachment edge
02) generate pattern with matrix command on flat surface
03) with the transfer command, transfer the points to the surface to be developed (fold transfers the elements to the surface to be folded)
04) (the matrix points should then be extracted individually to be used)
05) you create a normal axis to the surface and an axis with angle
06) make a power copy (normal point/axis with angle, drilling or whatever you need)
07) apply the power copy to each point
08) or if geometry allows it, create different matrices customized according to a correct angle of drilling and apply drilling with custom matrix

Let me know.

 

[micknat]

ciao @gianni and thanks for the suggestion!
I also had thought of development in plan etc. but... the matrices of points that I have to create are not rectangular, nor polar... so the points I have to create them on 3d surfaces to have precise positions. my shovel is mooolto similar to this (unfortunately I cannot post pictures of my file). is the first-stage rotor blade. as you see the surfaces of the attack edge (and also of the rest of the leaf) are overwhelmed and inflected.... what I wanted to do is to make directly a matrix of the "tubes" of the holes and not a power copy of each hole on each position. . i.e. create a tube by type and then generate in "automatic" the set of tubes distributed on the surfaces. only around the edge of attack I have more than 300 holes to be made.
Since it is a reverse engineering, I still have to generate axes on the 3d of each single hole. I started generating for each hole the passing axis for 2 p.ti one on the inner surface and one on the outside. Then I would make the geometry of the hole (not for everyone is a cylindrical surface) collected in a geometric group. after I will make special copy/paste of the geometric group and finally replace the references to move the hole to the next position (the power copy are not so nice to me).
I will end when we may already have a government.

 

[gianni55]

Hi.

I wrote power copy, but also copy/paste and replace references is fine. . .

but in your case you should create udfs (user slices) with input points (such as the passing axis) and holes geometries, create a list of axes to be used and through a loop automatically generate the holes (by type)
this is matter for alpole!once I tried, but I have little mastery.. .

ps end before you of the government (mattarella does not have the udf)

 

[germano.acciarri]

Hello everyone,
I'm reverse engineering a turbine blade. I have the complete external/internal stl available, thanks to coupled optical/tomographic scan. I have a problem with cooling holes. the shovel has an internal serpentine and this is communicated with the external surfaces of the shovel through a myriad of holes to allow the cooling.View attachment 50027View attachment 50028These are images downloaded from the web, but give an idea of my problem (in the sense that I have many more holes). the holes are presented according to "pattern" arranged almost as the isoparametrics of the external surfaces (and I emphasize almost), their axes have "costant" angles regarding the surfaces and some files have non-cylindrical forms. I look for suggestions for the parametric realization of these holes: Maybe by building the floor surfaces with comfortable patterns to generate and then transfer them to the real surfaces to execute the trim... I wouldn't want to build them one by one... Is there anyone who wants to give me advice?

Hi I would like to try to design a small turbine and I wanted to ask you where it is possible to take the stl.
Thank you. German

 

[dalmott]

Maybe with the custom matrix, I was thinking about something like this.
If I'm not wrong, you can only from r26

 

[micknat]

Hi I would like to try to design a small turbine and I wanted to ask you where it is possible to take the stl.
Thank you. German

Hi.
I can't send you... were "reserved" material of a customer. We can't send them around otherwise you know the causes that come to us. . .

 

[micknat]

Maybe with the custom matrix, I was thinking about something like this.
If I'm not wrong, you can only from r26
View attachment 64413

I did the job with the 19th, I think... or with the 24 (I don't remember)? eventually searching and consulting the user's messages alpole (quoted above) I managed to do a pseudoprogramme that made me punctures almost automatically... Now I don't remember just how I did and if I were to get a problem like this, I would have to be relearned again