| Re: Perhaps I was wrong....40HP? For you Tony! |
Subject: Re: Perhaps I was wrong....40HP? For you Tony! by BeachBum on 2008/12/23 15:15:57 Quote:
The hack & guess method ? How do you think a manufacturer got the original CAD file ? Then, after they get the CAD file, they will massage the tool path via a good cad/cam program.... Ie, the cam part being necessary unless you just want a useless cad file. (you could print it, but you can't machine it) Specifically, they are typically rounding the massive series of linear points they have to create a smooth path, this can be done in a variety of ways such as NURBS or simple G-code commands that instruct the CNC to automatically corner round each axes command transition. They can also shift it and massage the path, thus raising or lowering the roof for example or shifting the port enough to allow for a water jacket. But, I think I previously mentioned they massage the port design to get a casting. All aftermarket cnc porting programs are created as I specified.... they have to be. The original manufacturers will take that original cad file and create different castings even for different cylinder head models in some cases, but for that performance CNC port ? Spintron ??? Spintron is most commonly utilized for valvetrain issues.... when did they become involved in "creating" a tool path file for a cylinder head?.... thats new to me. I don't have any clue how that would work, can you elborate on how Spintron (the high speed cameras) would create a tool path ? btw, with a wetflow tested port, what happens to it after a porter modifies with his own cnc program from a wetflow perspective? |
