Hybrid Finishing

[cobra95kev]

Apparently this is just an issue with mastercam verify. I ran both toolpaths this morning in vericut and neither of them are actually gouging. I have not ran in to this one before where mastercam verify shows a false gouge, only the other way around.

 

Kevin C.

[Thee Rickster ™]

Sorry Kev, must of missed that.

 

MC (3rd) party verify is in need of an upgrade or MC to create one of their own.

I have seen in the past a gouge in verify but not in the path when I show it.

SO i ran it and all was good, (X3 I believe)

[Thee Rickster ™]

Kevin, are you running the MU1?

 

Your file tells me that 'cad file does not exist' when I try to regen a tool path?

[cobra95kev]

Yeah I should have stated that. X5MU1. Windows 7 64 at home and XP 32 here at work.

[dforsythe]

I gave hydrid a try yesterday and they ran it last night. At first the toolpath looked great, then i saw the part this mornning and was a little shocked. I looked closer at the toolpath and noticed the sharp moves it makes in the exact area of the gouges. not sure why mastercam makes such moves....but it did.

 

is there a way force mastercam to work from the top down instead of top to btm then middle?

 

below you will see the tool path and the finished part.

 

.750 3fl ball em

.012 step down

.012 step over

 

arc filter toll = .0004

finish = best

create arcs

smooth set to random points

 

 

 

 

 

 

[peon]

Damian, can you try that toolpath in a newer and better machine? Out of the 12 machining centers in this shop, only 2 can handle the code of the hybrid toolpath. If I try the hybrid toolpath on the other machines, I get similar results as shown in your photo.

[dforsythe]

Peon,

 

thanks for the imput. we have 14 machines here and they put it on one of the worst. that being said i still dont like the way it makes sharp corners.

 

thanks, Damian

 

 

[MotorCityMinion]

"that being said i still dont like the way it makes sharp corners." That's why I use scallop as a last resort for finishing in most cases. Even with a tight machine, those sharp moves are just bad news.

 

"is there a way force mastercam to work from the top down instead of top to btm then middle? Trim the tool path, then create another one, and so on.

 

I will admit that with a little hocus pocus, I can get a scallop path to give better results than blend or contour in certain situations, by trimming the path, then applying a different type of path to finish when scallop starts spiking like that or changing directions.

[hot_chip]

I get that using a hybrid with the same steep and shallow step over works good with a ball, but what would I have to set the angle to for a bull endmill to work. Kinda like a waterline to a horizontal tool path?