CNC Turning 4140 Steel Pin
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Uploader Comments (KCNC1)
Top Comments
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Machining porn :)
1 year ago 11
All Comments (77)
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At the very beginning of the video you can see that there's a step in the jaws.
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@KCNC1 that doesnt look like 6-8mm on diameter. id say 2mm on radius
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you should have made some jaws with a step in them for the back of the billet to push against. 2 minutes of machining that would save you heaps of time per part. otherwise very well done
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Are you making a forklift steering axle spindle?
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@KCNC1 Got chuck problems? That is some really frustrating shit! Been there!
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@soundspark 316 and 304 SS REALLY eat the carbide up! Give me any kind of (non SS) steel ANY DAY!
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@KCNC1 i have never seen a part slip in the chuck while using a tailstock, how much pressure did you have on the tail stock? and what are you feeding it at?
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are you starting with TGP??
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@douro20 really? its not uncommon that i end up running jobs that go less than .050" from the jaws or .025" from the tailstock center...keeps you on your toes on the setup part that is for sure :)
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What do you like , working on NC lathe or conventional one ? I really like conventional.
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I've never seen anyone machine that close to the chuck before- from the video it looks like 100-200 thousandths from the jaws.
douro20 1 year ago 4
@douro20 The top of the chamfer actually comes within 0.5mm or 20 thou.
KCNC1 1 year ago 2
why are u ruffing it out with such a slow feed rate
ripgutcanibals 1 year ago
@ripgutcanibals So it doesnt slip in the chuck. And the small batch didnt warrant extensive experimenting.
KCNC1 1 year ago 3
that's quite a dent you've got in your back guard...
Ju5tATh0ught 2 years ago 13
@Ju5tATh0ught - First job I did on the new machine came out the chuck and wrecked the door, made that dent and various other things that made me cry...Was a D200 x 300 piece of steel, the chuck jaw bolts broke.
KCNC1 1 year ago 3