adv. multiax / moduleworks problem

[Frankieboy]

anybody knows how to make the morph toolpath  , so the pattern is more equal ( like oper 2 )  , so  the tool does like the old "blend " toolpath 

the moduleworks toolpath is better in many occations since it can calculate the correct pos for start - end  , but not good with this geometry 

i have made a test part and attached  , 

anybody ? 

moduleworks question.mcam

[crazy^millman]

No way I can think of. Do you need 6 micron accuracy on the toolpath?

[Frankieboy]

ok ,,, im curious if any other have a solution ?  , its a problem for me often 

for the tol. , it is just this test part  , i normally use 0,01 mm 

 

[crazy^millman]

Covert to 5 Axis if you like the motion of one, but want 5 Axis motion. Works really well.

[Frankieboy]

i want 3axis motion in this occasion 

[huskermcdoogle]

Coons?

[Frankieboy]

could be possible in the example i uploaded  , but often these are multisurfs and not easy to arrange so that its possible to use Coons  

it would be best for me to use moduleworks 

[huskermcdoogle]

Agreed.  Using morph on a radius like that tends not to work well.  It would be a good improvement to that paths functionality if they added an option to optimize for sharp convex surfaces like that.

[Frankieboy]

i totally agree ,,,

i thought maybe  there was a way to fill in extra passes or calculate pattern/passes according to the tool rather than the surface 

[huskermcdoogle]

Sometimes adaptive cuts in the surface quality area or calculate based on tool center in the misc settings will help, but I have found not to help much when there is a big difference in the angle between surfaces that are blended.

[Frankieboy]

have  now tried with Coons surface and then a flowline toolpath ,,,, better but still not good 

and also the Coons toolpath  ,,, the same 

[huskermcdoogle]

What about creating an offset surface at tool centerline then using morph with a very small tool?

[So not a Guru]

What about Triangular mesh-constant cusp?

[Aaron Eberhard]

FrankieBoy - You're right that Morph doesn't currently support constant cusp machining, which is really what you're after.  Blend doesn't provide it either, as you know, because it creates a 2d toolpath and projects it down onto the surface.   I'd like to get that into Morph soon, but that doesn't help you out today.

You can get better contact along the fillet if you were to set it to cut with the tip (center of the tool) on the tool axis control page, but then you'll gouge, so head to the collision control page and turn on retract along surface normal if the tip gouges.

Here's a comparison of the different options.  You can see that Morph is giving you a constant stepover, but not a constant cusp.  Compare that to set to Center, and it looks a bit better.

Cheers,

Aaron

[Frankieboy]

thanks to you all 

i have now done all  the solutions you came up with , see attached mcx file 

nothing really produces a satisfying result  , but im glad that that there will be a solution soon  for the morph/spiral  . 

for the solution Aaron came with the bottom of the toolpath is missing 

surfaces on level 3 

 

 

moduleworks question - 5 toolpaths.mcam

[huskermcdoogle]

Extend Trim - Side Extensions

Also break it up into two operations.  First the Radius, Then the walls.  You will probably like the result.

[Frankieboy]

I know  , but This is a simple testpart , just so its easy to show you , the parts i do HERE on my Factor is more complicated geometry ,, its important that its one oper because of need for optimal surface through the whole port