please help with roughing

[Rory]

I have a part in which I need to rough a concave radius. The radius measures 2.750" and the length is 7".

I have never gotten to doing this kind of work before.

What is the best method using Mastercam?

Rory

[cadcam]

Well there are a few thouhgts here.

1. what is the matrial?

2. is it open at the ends?

3. Are you using surfaces?

just a thought without seeing a picture or some thing.

[Rory]

quote:

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1. what is the matrial?

2. is it open at the ends?

3. Are you using surfaces?

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1. Hot rolled 1045

2. No, closed.

3. Yes I planned on it.

[Wallace]

Pocket - Constant Overlap Spiral (turn off Finish)

[Rory]

Ok,

here is where I am at.

I can't do Pocket - Constant Overlap Spiral, because we only have level 2.

So I am trying to use Surface, Rough, Parallel.

The part is closed on the ends.

How do I get the tool to ramp into the cut and still stay inside of the Geo.

There is no lead in/lead out option.

Rory

[gstephens]

Use "Direction" and set it to 180deg relative to the cut in XY and put in a plunge distance for Z and that should do it.

[Rory]

Yesterday When I started on this project I couldnt get the Surface rough pocket to work.

Error message said I needed level 3.

Now today I am able to use "rough pocket".

What is going on?

Rory

[mcrae_andrew]

Rory -

If you have level 2 - define the pocket as a single surface (Coons works the best for doing this) and then use the top surface as a check surface. The sUrface Rough Pocket routine should generate a nice path for you. Spiral inside to out with a ramping routine for entry. I like to project the edge of the surface onto a plane and use this as a tool center boundary. Note - I use different colors for features (ie - Surfaces are Blue and Boundries are Red. When selecting use a colour mask and select all colour Blue etc...)

Hope this works, I am stuck using M/C v7.2 L2 and Pro/Manufacturing 2001 - Note M/C has more functionality for this simple type stuff!

Andrew

[Kenneth Potter]

quote:

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Error message said I needed level 3.

Now today I am able to use "rough pocket".

What is going on?

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The Mastercam software you using felt your frustration .So it desided to help you out some.

[Rory]

Thanks for the help!