5 Blade Fan,

[CharlieM]

There must be an easier way!!!!!!


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M30

[gar]

080213-0824 EST USA

I do not want to reverse engineer your code to figure out what you are doing.

A drawing or picture of the part and a verbal description of how you are currently doing this would help.

Not nearly enough code to be doing 3D surfacing.

.

[CharlieM]

This is not a 3D surface. I cut this little 5 blade fan from a piece of sheet metal and then bent the blades to catch the air.

My real question is, is there a way to write the program for 1 blade and then "pattern" the other 4 ?

I have already done this and it took me nearly 2 hours to write this code!

[CharlieM]

Let's see if I can post a picture.

[CharlieM]

ALLRIGHT, I did it !!!!

See the little fan? I cut that one out manually, about 10 years ago. I was running the engine fast one day and the little fan came apart!!!

So, I cut a 5 blade fan out last weekend. This one was made from stainless steel and of a stronger design.

[Mike Stevenson]

CharlieM,

Your program is very short. Why do you need to condense it any more?

There is a way to rotate and repeat the one blade but you would need some sort of programming system for that.

Or you could take out your calculator and use the cartesian to polar coordinate conversion function to manually calculate the rotated numbers.

[CharlieM]

The engine has a little fan to cool the head.

(Or you could take out your calculator and use the cartesian to polar coordinate conversion function to manually calculate the rotated numbers.)

This is what I am talking about, I just don't know how.

[gar]

080213-0859 EST USA

CharlieM:

Does your CNC have a rotation option?

If so create the path for for one blade, and put this in a subroutine (not absolutely necessary to be in a sub, but conceptually it is easier). I prefer to write in absolute. Put your origin for the subroutine code at the center of the fan.

The main body of your code will

call the sub
rotate 360/5 = 72 deg
call the sub
rotate to 144 deg
call the sub
etc.

This can also be done in a loop.

.

[CharlieM]

My CNC is a "Home Built" desk top design. I run the stepper drivers with a program called "Master 5", all I know is; "Master 5" can read G-Code.

I had to hunt and cordinate every single destany in the above program! My question is how can I do it once and "pattern" the blade 4 more times?

[gar]

080213-1005 EST USA

Is rotation one of your G-code functions?

See the HAAS manual, G68.
http://www.haascnc.com/customer_serv...mc/96-8000.pdf
This is a 13 megabyte file. Save it for future reference.

.

[Andre' B]

Near as I can tell Master 5 is the original version of the Mach control software. Unlikly it knows what a G68 is.

http://www.machsupport.com/artsoft/p...s/products.htm

I tryed plotting the above code and got arc errors and nothing that looked like a fan.

Upload a DXF of the outline and ask nice and maybe someone will make a quick toolpath for you.

[CharlieM]

Thank you Andre'B, I have already cut this little fan out.

I wrote 2 programs to do it,

1. from the center of a disk, I drilled 5 .125 holes.

2. manually changed to a 1/16" end mill and used the above program to cut out the 5 blades.

"Master 5" did it for me, no problem.

I tried to use Kelly ware ~ KCam but the program would only show 3 blades !!!!???

You could up-load KCam and see what the fan looks like, except it will be missing 2 blades!!

I am just trying to learn something here,