Rotary axis cut

[KenNelson]

I'm trying to generate a simple rotary cut on a cylinder and need help please. The part is

mounted on a full rotary table, rotating about the X axis on a VMC. Part diameter is 11.260",

and I simply need to cut a 2-1/2" square pocket with .281" corner radii, .03" deep, the floor

of which is concentric to the o.d. The geometry I'm using is customer supplied and is a

surface/wireframe model, so I would not use projected geometry. Z-zero is the center of the

part is. I have tried surface/finish/parallel/rotary axis (all three positioning types) with varying

degrees of success. I have also tried Multiaxis/Curve5ax/4axis output. ARRRRGGGGHHH!

I cannot make Mastercam output good code. This seems like it should be a straightforward

cut, and hopefully some of you are able to help.

 

Any help is appreciated.

 

Ken Nelson

[cadcam]

Have you tryed unrolling it and doing it as a 2D pocket.

this will roll it back to the od.

 

Can you share the file,By what you are saying it is.

I should be able do it fast.

[Mick]

Ken,

 

I understand how you feel. 4 axis machining seems to be a real black art in Mastercam, requiring a lot of voodoo

[Ken Nelson]

Cadcam-

 

No, I have not tried unrolling it. If this is the correct method to use, great - though I feel I should be able to generate this cut without modifying the geometry. I am able to share the file; should I try to upload it to FTP or mail it to your address? I really appreciate your offer of help.

By the way, do you know if there have been any additions to Blackbird Airpark recently (anything new besides the two a/c and the D21)? I may be passing through the eighborhood in April on the way to Phoenix and would love to show my son the park.

 

Thanks again

 

Ken Nelson (pebkac specialist)

[cadcam]

hi ken,

As for the unroll of the file this does not mean change the file.

Please put on the FTP or mail up to you sir.

 

As for the park .I have not looked in a while I will look this week and let you know.

 

And I forgot I should take mine over there.

[Ken Nelson]

Hi Jay

 

I'm curious - do you mean you should take your SR71, D21 or son to the park? Inquiring minds want to know.

 

Thanks again

 

Ken Nelson, pebkac specialist

[cadcam]

Sorry ken I meant my SON.

 

Hey weres that file?

 

[ 03-10-2002, 10:45 AM: Message edited by: cadcam ]

[Charles Davis]

I've been working with the 4-axis stuff in V9 and it seems exceptionally good.

[Ken Nelson]

Hi Charles -

 

Our dealer has yet to deliver V9 to our shop. That reminds me - I'll give him a call today.

 

Thanks

 

Ken Nelson

[KenNelson]

Hi Jay:

 

Thank you very much for the file - that's what I was looking for. I thought, however, that I would be able to program some sort of surface cut to achieve this. I'm a believer in using any method that works though. I'm about to order the 4 and 5 axis machining book from this site; is that a good resource for this type of situation?

 

Thanks again Jay

 

Ken Nelson

[cadcam]

Ken, the book is good.

And for that extra kick come right here.

 

did you get how I did that cut or you just going to use mine?