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Post by faircloth on Feb 21, 2020 1:15:30 GMT
This is getting old. I originally had set 50 IPM and .03 doc with the router maxed rpm but only got about.25" before the bits broke. Now they go about 15min in @20% 12ipm and break. WTF I'm using WD40 Any advice to get through this job? Thanks guys Attachments:
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Post by dadof4 on Feb 21, 2020 2:30:27 GMT
Double check your Z zero setting. If your software has an option to ramp into the passes I would suggest that. No need for WD40.
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Post by activereality on Feb 21, 2020 2:37:45 GMT
Hmm, chip evacuation maybe? At the slower rate, it would make sense the chips are not getting cleared as well. Any galling or 'smearing' visible on the bit or at the site of the breakage on the work piece?
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Post by Derek the Admin on Feb 21, 2020 4:10:18 GMT
6061 would be much better than 5052. 5052 is gummier.
I think you should run it at around 0.015" depth of cut.
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Post by faircloth on Feb 23, 2020 1:19:19 GMT
I used my probe (all 6 times lol) for the Z and am ramping @ 2*
The surface finish on the areas it did cut looks great actually and the chips look decent for the small cutter. also, the bits break 1/4" into the ramp so prob not chip evac.
Bits don't look galled up either.
I cant use 6061 because it needs to bend afterward and the 5052 doesn't crack
I was thinking of going .015 doc too so I'll try that.
I'm thinking = ramp @2* 20000rpm .015 doc 30ipm
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freik
Full Member
"What did you buy the new CNC Router for?" "To make stuff for my CNC Router!"
Posts: 107
Location: Bellevue, WA
Machine: Power Route
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Post by freik on Feb 23, 2020 7:37:55 GMT
Cutting fluid is the only way bits that small survive any length of time. I've used 2mm bits, and without cutting fluid they died quickly. Cutting fluid lets them last a very long time. It's really messy though ☹️
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Post by faircloth on Feb 24, 2020 0:52:47 GMT
I wish I could find one of those drip bottles like on the harbor freight drill presses but they don't sell them separately...
This is an 8hr cut and I'm not going to sit there dripping oil the whole time lol
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Post by Bruce on Feb 25, 2020 3:14:50 GMT
Necessity is the mother of invention...
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Post by faircloth on Feb 26, 2020 1:13:03 GMT
Necessity is the mother of invention... Ive got a few ideas but no time |
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blinsc
New Member
Posts: 32
Machine: Power Route
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Post by blinsc on Feb 27, 2020 15:15:12 GMT
For 5052, if you haven't already, try using a single/o-flute... for 1/16th, I'd stay at 0.001 chip load (or less), and probably have the router maxed out. I use a digital RPM meter to verify RPM. I've cut a lot of 0.080" 5052 on my Power Route, but the smallest end mill I normally use is 1/8th. I use Onsrud 63-6XX and 62-6XX but they are kind of expensive. I have some cheap 1/16th end mills, but I only use those for boring small holes.
Attached picture is some 5052 test piece I cut a long time ago. It was straight off the router so you can still see the tabs.
Edit: forgot to mention, when cutting sheet, work-holding is extremely important. Perfect feeds and speeds won't help if your work piece lifts. If it's a big piece, clamps probably won't hold down the center. What I do is use the blue painters tape + super glue trick. It allows me to use an up-cut end mill on sheet. If you don't want to do that, you can use a down-cut end mill, but you have to be really careful about making sure the chips are cleared, and trying to bore small holes with a down-cut is pretty much a no-no.
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Post by Bruce on Feb 29, 2020 19:56:17 GMT
Necessity is the mother of invention... Ive got a few ideas but no time Understand fully...I feel your pain. |
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Post by faircloth on Mar 4, 2020 23:42:55 GMT
Ive got a few ideas but no time Understand fully...I feel your pain. Dude, the superglue and blue tape trick has been life changing lol especially for heavily nested carbon fiber plate and sheets oops meant to quote the one above |
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