45 Degree Full Radius Undercutting Tool

[info5APCW]

Hi,

I need to create a 45 deg full radius face groove on a lathe part I am making.  I am using a Micro 100 UP-25030-8 Undercutting Full radius tool.  The groove width is larger than the tool width, so I need to go in and rough, then profile finish this groove.

First off, I can't figure out how to create the tool within the Fusion 360 Library.  There are no parameters to allow for a 45 degree tool that I can see.  45 deg profile tools on a lathe are very common, so I may be missing something.

I also can not figure out the correct turning tool path to select.  My feeling is to use an I.D. profile tool path.  If the correct tool is selected I should be able to select the feature.  It is pretty basic, and I can probably hand code it if necessary.  But would be great to have Fusion 360 do it for me.

We have been running these parts on our Mazak programmed in Mazatrol.   Mazak is busy now, so need to use our Doosan with Fanuc controller.

Thanks for any help.

Terry

[info5APCW]

Here is a cross section of the groove to help understand what I'm trying to do.

Thanks again.

[a.laasW8M6T]

Like that?

you can enter the angle in the tool setup tab.

In terms of programming I'm not sure as I don't do any lathe stuff in fusion

[info5APCW]

Thank You.  I never thought to type in 45 deg.  I was clicking on the arrows.  Such a simple thing.

I'll see if I can get it to program properly now that I can create the tool.

Thanks again!

[info5APCW]

Was able to create the tool, though now I am having trouble generating the toolpath.

It makes the most sense to use the I.D. grooving (or even better face grooving if they had that option).   I have also tried doing an internal boring toolpath.

At this point I am just hacking away at the settings.  Everything that I thought made sense is not working and I continue to get 'failed toolpath generation'.

I think my biggest problem is I am not sure how to select the geometry.  I have done many O.D. and I.D. grooves with fusion, and I typically input from the model front the Z start and Z finish of the groove, make sure the groove overlap is set correctly, and all is good.  With the 45 degree orientation of this groove, I input the Z start and Z finish of the groove with no success.   Also tried to input the Z value for deepest part of the groove, and using the model to select the chain of the start of the groove.

I know there could be many other factors here, but fusion is only saying failed toolpath generation with everything I try.

Would be great to profile this groove with the tool I have.  But in the end I may have to plunge 15 or so times to generate the full radius with a minimum scallop.  At least that can be hand coded, but very tedious.

If anyone has any suggestions, I would be happy to try them.   

Thanks!

[info5APCW]

I have the toolpaths generated properly using an i.d. grooving toolpath.  I had to play around with the clearances a bit.

Last thing I need to figure out how to properly specify the tool tip.

When you touch off a 45 degree full radius tool, you touch off the x and the z.  This puts the tool point as shown in the drawing below.  (blue line intersection)

Is there any way to get fusion 360 to recognize a tool tip at this point?  The Tip Tangent, and Tip options do not put the tool tip in the correct spot for this 45 deg tool I have created.

Only thing I can do now is use the 'center' option and once the tool is touched off I offset in the machine the radius of the tool in x and z to put it at the center.  This will work just fine, but trying to see if fusion has an option to put the tool tip correctly on a 45 degree tool.

Thanks,

 

[a.laasW8M6T]

Yea that is odd, I would have though that Tip Tangent would do what you want but it doesn't appear correct in the Diagram, it seems to be exactly the same at Tip(which is also wrong)

I think Center would be the safest option,  but I wonder if the Tip tangent isn't behaving as it should, like a Bug

(it seems it is only behaving incorrectly with the tool tipped at 45°, the same happens with a general turning tool)