>no machinists thread up
You guys had one job :/
Anyway how the frick do I machine this feature on a 5 axis cnc mill? I thought I was good at machining but I can’t think of anything that doesn’t fricking suck and neither can anyone at my company fml
>Put in the appropriate end mill
>Don't be a goddamned moron
>???
>PROFIT
Also changes to the part to make it easier to machine are acceptable
I’m so fricking lost bros my customer came back and asked how we can modify the part to make it 60% cheaper and I just am out of ideas I’m literally asking PrepHole for help with my goddamn job as an engineer what the frick
make the key a separate component, either press fit or figure out a way to thread it
two sets of arc interpolations? Pretty fricking small though.
why not machine it as one whole piece then cut in half?
>can’t think of anything that doesn’t fricking suck
What's your sucky approach?
Ok step one is picrel
Step two, then step 3 is the final op to cut the round
Tiny part & tight tolerances, can’t hold a good surface finish
What
Idk how that would help
You can’t press fit a pin on the side like that
>Tiny part & tight tolerances
https://www.the-carbide-end-mill-store.com/20m5/micro-end-mills.html
Idk, my boss says it won’t work. I obviously thought of that first fm
start with the entire piece as a cylinder, machine the component as a whole, then cut it in half in the middle. now you have two finished pieces for your client.
What this anon is trying to communicate, is make the piece out of twice the amount of stock, make the part as you’re making it now EXCEPT mirror imaged onto itself. So instead of your half a pin key type thing you’ll have a slightly out of round circular pin. You then bisect it perfectly centered and you have two of the same part. You not getting it still or what? It definitely sounds easier to machine.
well the way you posted is the only way you're going to get it to go
What's the issue?
Mismatches and tolerances :/ having to finish that cylindrical surface in multiple ops is less than ideal since u gotta blend it
what's the functional purpose of this part?
Can’t say :c
This is a purely theoretical machining question :^)
I’m sorry!!
Like I said, the way you posted is the only way I can see it being done on a 5 axis mill.
Not knowing the functional purpose of the key on the end, there's no way to know how to modify the design to make it cheaper and easier.
Ugh true. It’s just a pin to slot into a key way. Like where u turn it and it locks into place
That's what I figured. Does it have to be that exact size and shape? Just drill a small hole and throw a hardened pin in instead, or thread one in if youre feeling frisky
Exactly where my head went and Im not a machinist, it just makes sense.
How is it hard to round over a piece with a CNC?
Have you got like a Great Value CNC machine?
you turn the main shape on a lathe leaving a ridge of material for the pin on the end then you can cut the shape top down with end mills
>you turn the main shape on a lathe
>leaving a ridge of material for the pin on the end
>cut the shape top down with end mills
Hey OP. What about this idea?
I could do this on a lathe for the initial turning and then a 3 axis mill easily if i can use a rotary table for part of it
I realized its not helpful to just say I could do it so I drew my thoughts down. I'm too tired right now to open CAD
oh wait nevermind they said this is a super tiny part i thought it was like a big part this setup is overkill for a tiny thing
>turn the part down to .375
>turn the middle with a grooving tool to whatever the frick it needs to be
>only have to 5axis the tip
Turn a piece of stock to .375, but leave it longer than needed so you can put it in a collet chuck on the rotary axis. Turn down the smaller diameter, leaving a lip around the entire diameter where that stupid little feature will be. Chuck the extra long .375 portion into a collet chuck on the rotary axis of the mill and the rest is easy using the toolpaths of your choice. Cut off the extra with a saw cutter or turn off in a lathe. Tell them that they can figure out how to cut the price by 60% or frick off.
>Tell them that they can figure out how to cut the price by 60% or frick off
this...charge them for consulting time
Send it to AvE with your desired specs
For the lulz
The only thing AvE ever seems to do is turn perfectly good bar stock into scrap.
Not true
He burned up and broke like $800 worth of end mills turning $2 railroad iron into $3 bookends
Judging by the pic you used for your second operation it sounds like you got it figured out. You need to make custom vise jaws for it that leaves only that top part exposed
>I can’t think of anything that doesn’t fricking suck
Of course because that's a stupid design.
Just millturn it. If you need better finish get a better machine. With modern endmills and hydrostatic ways there's basically no practical limit to surface finish. You could also diamond shape it with a CNC shaper. Like a lathe but only 95% of each revolution. Or do it old school and jig grind it.
Naturally everything you can think of will be harder and a lot more expensive than machining a geometry made for easy machining.
Probably press fit that niglet of a feature for because it's a small piece, or thread. If you need that feature to be flush with the point end, have the pin or threaded pin be ling enough to fit/thread into a small hole, while having a larger half to that threaded or regular pin that is rectangular, and sticks slightly above the point length, which can then be ground down to be flush with the point length.
Hope that makes sense
No clue if this would work for your application but if it needed to be flush to the point as shown in the pic, that's the first way I'd try it.
T. Manual surface grinder
3d print it, idiet
That's dumb. Send it back to the engineer and berate them for not having any practical knowledge of how things are made and wasting company resources because autism.