Curve 5x help for Newb...

[David Colin]

Hi !

 

I have a prob with curve5x toolpath. I'm (still) new to multiaxis toolpath and need your help.

I put a file on FTP (MC9 directory:Screw_curve5x)

 

This is pretty simple but I can't do it...

 

I want to machine a slot on a cylinder (which is several laps long). It looks like a screw and it's typically a 4-axis toolpath which can be programmed with Rolldie C-hook too, but i would need 5axis toolpath to be able to tilt cutter.

 

How to make this toolpath smooth? Project normal to surface?

 

I'm using MCAM9.1

 

Thanks!

[Hardmill]

quote:

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Project normal to surface?

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If you look at your spline (from the side) it starts past 6 o'clock,

the toolpath starts normal to the start of the spline.

 

 

PEACE

[Storkman]

nobody starts past 6 o'clock dummy. That's happy hour.

[Hardmill]

Thanks blockhead, I starts at 8:00

 

 

PEACE

[David Colin]

quote:

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If you look at your spline (from the side) it starts past 6 o'clock the toolpath starts normal to the start of the spline.

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Can you explain why this is a problem?

This is why i can't project on surface?

How to correct?

[Hardmill]

Its not a problem cause it still is normal to the surface.

If you want to cut the surf you need to put -neg-

stock to leave. You wont be able to put more than

the tool corner radius though.

Or change your geometry.

 

What exactly are you wanting to do ??

 

 

PEACE

[David Colin]

I want:

 

- That the cutter follow the spline from right to left (this is a screw)

- tool tip compensate on the surface

- Keep tool normal to the surface

[cadcam]

David look at your file with Cadcam added to it in the same file seems as simple as that.

 

unless I am missing some thing.

[David Colin]

Hi all!

I just looked at your file (CADCAM) and there is improvement but it still remains some problem.

 

The point is that 3D contour toolpath you made is exactly what I want to do with curve5X. However I need to do it with curve5X because i want to be able to use 5-axis features (to tilt cutter)

 

The problem is that in your file, curve5x toolpath doesn't match 3D contour toolpath. It seems rotated or mirrored. I don't really know what's the problem

 

Anyway, what did you modify (geometry?/parameters?) to make curve5x toolpath to work?

 

EDIT:I looked into it deepier and it seems toolpath is projected at the opposite side of the surface (diameter). I want to project on the side next to spline. Help...

 

Thanks all

[Hardmill]

quote:

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EDIT:I looked into it deepier and it seems toolpath is projected at the opposite side of the surface (diameter). I want to project on the side next to spline. Help...

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David,

Reverse the surface normal

 

 

PEACE