Reply with QuoteOriginally Posted by artracing
Is it me,I have no see on attached .zip ?
Re: CAM allows 1/2 Ball mill to cut .025 radius
see Attached zip
Re: CAM allows 1/2 Ball mill to cut .025 radius
Is it me,I have no see on attached .zip ?
What you dont see it? Oh jr, it's beautiful green meadows and fresh crystal springs with fabulous birds in wonderous blooming trees, and a light so bright that...
Oh wait.... nevermind. I dont see anything either.
Bingo. There it is!
Re: CAM allows 1/2 Ball mill to cut .025 radius
Set a Boundary
That is all the better I would expect it to come out given the tool used
Let me know,I can make a video,if that will help
SBC,he knew
Last edited by jrmach; 04-19-2017 at 11:14 PM.
Re: CAM allows 1/2 Ball mill to cut .025 radius
Took a look at your file. Pretty much exactly like the geometry:
There are a couple things We can discuss. 1 is, in my opinion a major no no in the file (I could be wrong). Some of the others are some minor changes we should make to get your result out. I want to make some geometry for you and do a quick test, then present it for you to look at as "How you are cutting it" and if it works, etc....
BTW: I looked at the "Body Top Shaping" toolpath in machine setup 2...
Give me a few to get back to you...
Re: CAM allows 1/2 Ball mill to cut .025 radius
Burr,in another thread,I believe he stated he had only "4" 3 axis tool paths
Mill Standard is what that would be
That is a factor for sure
Re: CAM allows 1/2 Ball mill to cut .025 radius
I didn't change his standard "planar" toolpath. It would certainly help him if he has the "advanced planar" or others, that would intermediate cut the vertical areas, but that's not his issue here. Next post to start covering some stuff. feel free to chime in!
Re: CAM allows 1/2 Ball mill to cut .025 radius
So I have 5 or so things we should look at. First is the setting at the feature level which is setting "top of feature" at -.1909.... Not sure WHY you did this. There's a lot going on in the file. Machine setups and all. I cant direct too much because I'm not a machinist, but maybe others can look and correct me about why that's correct? I think he has messed with all his rapids and feed planes and has a chance to violate the part, but I didn't crunch all the numbers all the way through.
The next thing is all the surfaces are individual and "unstitched"! This has NO surface edge "connection" info in the file. Although it CAN work and BobCad has got better at it, those individual surfaces remain defined as single entities, which means the toolpath can be calculated "around the edges and move along side them" etc........
The model has just a couple areas to fix, to allow it to be stitched into a solid, and "join" all those surface edges in their underlying definition. Here's a video where I fix the solid:
Also, looking at the toolpath you have made, you can see many areas where the tool "just wont go", because the geometry selection for the feature is just too thin or small. I created a little "extension surface" (Probably a little bigger than needed at .35 It really just needs to be half the tool diameter to allow the tool tip to reach the BOTTOM of all your selected geometry surfaces for a clean cut. Maybe you cant do this, but you should review it. The video shows me merge this surface in. (It's included in the attached zip file, along with the guitar body as a solid)
Here's a quick vid of me toolpathing and simulating the body surface cut. I DID make the change of top of feature for the calc. I included the new surface:
anyway, maybe you want to get into some of these questions?
Last edited by shuwal; 04-25-2017 at 08:03 AM. Reason: Removed attachment per request of BurrMan
Re: CAM allows 1/2 Ball mill to cut .025 radius
Oh yeah.... There's also an "Allowance" set on that feature? I couldn't find a feature that was set as the finish one.... Just sating...
Re: CAM allows 1/2 Ball mill to cut .025 radius
When I set his Boundary I extracted edges,then offset .300
Did not fix the model,but did make it better ?
Your sim looked like it cut pretty good. The boundry essentially doing the same thing by forcing the tool to finish that edge.
But we still have to look at his result, as he posted a pic of violating the actual tip on the cut wood.
Re: CAM allows 1/2 Ball mill to cut .025 radius
Setting a boundry also forces the toolpath "down" into areas of unselected geometry though. I didnt explore using "islands" in the boundry selection as my habit is to not try that. It has not worked in the past. I didnt look at untrimming those holes either...
Re: CAM allows 1/2 Ball mill to cut .025 radius
yeah,,only spent so much time on it
op,does not seem too excited
Give him time to soak it in. I dont think the sim in the original post showed a "gouge" though... i think the gouged wood was from the post processor, or the various odd "tops defined doing a retract or rapid there. What "looks" like the same gouge in his sim is just that half inch ball stoping at the end there...
Re: CAM allows 1/2 Ball mill to cut .025 radius
This is all pretty amazing. I'll need to soak it up. Most of this is over my head.
Thanks so much.
Rob
Re: CAM allows 1/2 Ball mill to cut .025 radius
Ask questions and supply feedback,,,that's what this place is all about
Re: CAM allows 1/2 Ball mill to cut .025 radius
You did a terrific job. The CAD was made by someone else. Don't know who he is. It was written in another program and cam as a solid. I needed to unstitch it. The CAM I did on is, the first time I ever used BoBcad CAM. Except for this issue, it cam out good enough the customer accepted it and didn't have a problem doing some hand work until we could resolve the issue.
Re: CAM allows 1/2 Ball mill to cut .025 radius
Well sir,,I am pretty impressed for your first time out,,,,really
if you are in business and doing this kind of stuff,,you really need to go to Mill Pro,,,more advanced tool paths
Re: CAM allows 1/2 Ball mill to cut .025 radius
I see your did a number of things. Would merging that boundary section resolve most of the issue at the horn?
The block I get is 2.5" tall. I have to cut the backside cutouts first and then flip over so the back of guitar is done. I then select the top surface which is -.19
You commented why I did that. Isn't that correct? Was I supposed to select the top of block?
