Big Steel CNC: Parking Attachment CAM for Abom79 - Widget94B
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- Опубликовано: 30 сен 2024
- CNC machining a large steel part for Adam Booth's K&T Horizontal Mill! Using Fusion 360 for CAD and CAM then the Tormach PCNC 1100 to make the part! Sorry for the audio noise in this video! I realized what caused it! The camera was charging while recording which introduced the electrical hum.
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Music copyrighted by John Saunders 5 Reasons to Use a Fixture Plate on Your CNC Machine: bit.ly/3sNA4uH
John, I do this typ. of milling quit a bit. If I could make a few suggestions. On your 3D milling tool path I think you would have better luck if you change the angle to across the part. Start at the lower end and work up. A ball endmill doesn't like downward plunging cuts that it has to cut to center. It will do it but it may give you trouble. The tool will do much better cutting up hill. Like wise rough out you 20 and 45 degree bore/chamfer and finish mill with the ball mill( Doesn't matter up or down it wont be cutting to the centerline of the tool). I think maybe you roughing tool path on the outside with the long tool might be a little to much for your Tormach machine I think you will need to do it in smaller steps in the Z axis(You will be fighting chatter with the long tools don't try to high a RPM). I, typically on a larger machine would be using a feed mill and taking it all in one pass around but with shallow depth of cut(around .05 to .06) at a very high feed rate say about 200 inches per minute. Actually on that part I would be doing a helical path starting at the top all the way down to depth with the feed mill.
Personal opinion. But I'd make op-1 the other side (what's currently your bottom)
That's the flatter of the two sides. If you cut that side first. The 2 flat levels, outer profile (to full height of the part), two bores, slot, and 45 chamfer. That will leave you with a nearly 5" long flat section you can just throw in a vise, locate with the 751 bore and cut the remaining off.
No fixtures to build and you will have a much more stable area to rest and clamp on for op-2.
I foresee issues with your way trying to hold for op2. It's prone to rock in the vise. You'll be trying to hold up 5" of steel on a small 2" round flat section. Unless you spend the time, money, and energy to build an fixture to support both ends
John, at around 09:50 it looks like there will be a little part left of the step at the upper radius part so to me it looks like the angled flat on the top part might not be exactly like your CAD-model looks like because the ball nose mill can't cut right up to the next part
how do you try to solve the "issue"? manual milling or leaving it as it is?
Would be a nice project on a 5 axis CNC I guess ;-)
+NYC CNC sometimes i use some 4flutes straight endmill with big radius to limit the extra left by ball nose mill. In metric size, mitsubishi T12R1 ou R3 (Ø12 with end radius of 1mm or 3mm). i can check ref at work if needed. for the top, and for the bottom, a smaller ball nose would be great to retake that ;)
Funny, the only G-code I have ever written was line by line: this is the tool, this is where it goes, a tedious process for me for all but the simplest of jobs. I also still think you should mill the hole, not ream it. That is a pretty basic op that I think you should be able to hit within less than .001" unless Tormach's aren't capable of that.
NYC CNC
It is only a 2.5" part. You guys and your little tools. lol You could invest in a www.osgtool.com/Product-List-Detail/HY-PRO-CARB-VGx/VG464/detail/VG464-3751 I am sure you would find more uses for it than just this one job. I would be lost without a bunch of extended length tooling.
Never single blocked? You're right, that is crazy.
If your using a cam generated prg and you have a quality DNS linked too, pre setter there is absolutely no need to single block.Just a waste of time and money.
+NYC CNC
The big red button never prevents anything. All it does is make the bad noises stop 😆
Thanks for the video, just supported you Patreon. Looking forward to the machining!
Are you sponsored by Fusion? There are lot better packages out their.Fusion 360 is very limited and @ best basic but functional.Do you use it as it's cheap.In Europe Fusion has a very good reputation but it's viewed as very limited and the cheap cheerful reputation it has means its main customers are hobby machinists and very small garage like operations .Open Mind /Mastercam/Edgecam/ are probably the most popular for mid to large manufacturing and sub con machine shops.I know from experience Mazak has Edge as it official partners.DMG WFL.Hermle.mikron use Open mind as their preferred partner?
Did you get a new CAMERA? Looks Crisp!!!! it hurts my head it looks so real.
As Always great video.
Many thanks for showing some patience by slowing down and explaining what is going on with this operation - it makes it much easier to understand!
One point you will never have thought about I'm sure is people like myself who are partially colourblind (red/green). It is most helpful to use sharply contrasting colours with explanations like this does.
Really enjoyed the video about Cam. I've been using autocad at work so it kind of makes sense. When does the CNC Mill locate the part?
3D cam paths are my life! Some times they feel like a prison. One thing to talk to Karl? At lakeshore carbide about. Is lens type profiles for the ball nose. The rpm of the tip is 0 and depending on what diameter the ball nose is dictates what your cutting edge rpm speed is. The smaller your steep over the more likely you are to rub. Lens profile is simply a larger radius profile. So if you have 6mm bit you can have a 12mm radius. At least this what we have now invested in. Or at least we are waiting for it to be delivered. Some thing to think about though!
Helix the hole. If you had an extended neck reduced shank finish mill you can get within tenths. even with reaming, drill 1/64 undersized and ream half the speed three times the feed. also for doing the outer profile seems like maybe a 1 inch turbo mill, peck it down, leave about .01 on then finish pass it with a long end mill. saves tooling
Most excellent and to be able to follow on two different channels permits a much larger audience see multiple possible solutions and almost live commentary with very little delay. Fantastic collaboration.
Why not use a magnetic chuck for the work pre-finish of the hole reaming? This sacrificial plate and only minimal work on the 'bottom' at the end.
good lord are you going to make this part or talk about it forever, just ad your comment as you build it Adams waiting for it, and if he has it already he can't show it til you make it, its a slippery slope, lololol
The flute length of the WarMill was at my request because HP limitations on these small mills prohibit you from using much more than that with any respectable WOC, and the LOC was based on the depth needed to machine the WarBlock. Hence the "WarMill" name. So why have more flute length if your not going to be able to use it.
The WarBlock needs to be machined down 2.4" and you can't really do that in one depth on a 2HP mill. The next best thing is 2 depths of roughly 1.2" which a 2HP mill can do so we decided make that the approximate flute length.
Plus the necked down portion is much more rigid than if it were not necked down but still fluted like a standard 2" LOC 1/2" rougher. Carl mentioned he might make a 5 flute version, but nothing definite. I hope he does, I would love to compare it to the 4fl version.
You bet buddy!
Will you show any machining or just the drawings? Be nice to see some of the work!
Great video John, how much do you charge to take a cnc class there?
I love the look of the tapered contour toolpath.. it looks sooo sweet.
What machine time is this I'm intrigued to find out!
Fun to watch thanks John. I have gotten in the habit of giving my parallel surfacing toolpaths a 45° angle and clicking "add perpendicular pass". Looks sweet if you don't mind waiting a minute on it.
What types of files you prefer to use when you're not designing part but CAMing it? I'm designing parts (using SolidWorks) and I'd like to know what types of files people prefer to work with. Do you use STEP or anything else?
+NYC CNC so I guess, it's better to use SolidWorks files because STEP can't contain cosmetic threads, MBD and some other SolidWorks features. Thanks for answer.
I think it's going to be exciting to watch this part being made..
Was that a good apple at 10:58 ?
+NYC CNC :)
why dont you deburr and chamfer all the contours right there in the first operation?
If it's just 1 or 2 parts why bother with setting up and dulling another tool and increasing the cycle time?
It's quicker to just pull it off and hit it with a file or deburring wheel.
If it was a higher volume production part (like over 100). Then ya. Putting in a deburring path would make sense. But a couple parts? Grip it, rip it, buff it, ship it.
Love all the illustration!!
Thanks for sharing!
John, not criticizing, just a point. When you do these videos, you are usually talking pretty technical stuff (especially to those of us, not adapt at CNC), and I know you make money off having ads inserted into your videos, but its extremely distracting for some to have these ads pop up in the middle of your conversation or demonstrations! Maybe you could keep them to the beginning or end to help keep peoples attention and focus! Not all of this has to do with the break, as much as it does the ads themselves!! Just a thought!!
Ad insertion is a RUclips thing. He just needs shorter videos 😆
As for technical wording often there is no less technical term to use. Unless he spends the time (which could take days weeks or months) explaining the meaning of every term used.
Most are industry specific terms that don't carry over well. For instance the term "dead nuts" has a completely different meaning to a machinists than it does to a urologist ;)
Download adblockerplus from google-it really works!
thanks
At 9:08 with the 3D adaptive path, the slope, is there a reason why the tool starts at the bottom of the slope rather than the top? I'm thinking it would be easier on the tool to start at the top, not to mention the half second saved while the tool locates on the Z axis.
Adaptive clearing maintains the largest flute engagement (deepest cut) as possible.
It reduces cutter wear since you're maximizing the amount of flue you're using on a tool. If you just took little 1/8" deep steps from top to bottom, you'd wear out the first 1/8" of the tool and waste the other 1"+ of flute above it.
With 3D adaptive clearing you're initial depths of cut should be whatever your tools flute length is.
Makes sense, thanks.
great
Many thanks for the real-life example. It will be interesting to see the finish from the ball end mill.