Major margin chipping, 15 cases due this week, R.I.P.

montgomerylabtech

montgomerylabtech

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Roland DWX-51D
Margin chipping.

No idea what to do after trying everything I did in the past to troubleshoot.

R.I.P.
 

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HygienicBee

HygienicBee

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This may seem obvious to some, but have you checked the burs, spindle chuck, and re-calibrated?
 
sidesh0wb0b

sidesh0wb0b

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try a new tool. back to basics....grab the carbides, brand new tools. calibrate. do a test crown.
if it works, try new diamond tools. looks to me like the 2mm or 1mm is being a bit aggressive. swap em out!
 
cadfan

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try same file in wax same problems ?? if not burs or strategie vs strategie cad config mistake
 
KentPWalton

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What they said, but also clean your collet. You should have a preventative maintenance scheduled for every machine you have. Those collets should be cleaned and re-greased every week.
 
sidesh0wb0b

sidesh0wb0b

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What they said, but also clean your collet. You should have a preventative maintenance scheduled for every machine you have. Those collets should be cleaned and re-greased every week.
every week being subjective to how much milling youre doing. lol
kent is used to these giants churning out 30000 units a month! Laugh
 
KentPWalton

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Haha...nope. Better safe than sorry on a piece of equipment don't you agree? Do you want to have to pay for another machine if the company asks you if you followed their recommended PM schedule? You must be doing better than you're leading on if you can afford that! ;)
 
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Kristjan_DentaLab

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Also might be a faulty tool measuring key
 
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kckendall123

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Did you ever get this issue fixed? Having the same issues with dwx-52dci.
 
Affinity

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Pay for another machine if you dont follow the maintenance schedule? Who warranties mills anyways? I dont know of any company that would send you a new mill if it starts chipping margins...
 
DAL Claxton

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A quick process to run through :
* Tighten the collet - if it's loose, no amount of burr swapping or cleaning will help
* Clean the collet - same as above, just next in line
* Be sure that tool shanks are clean, and the calibration pad is clean as well
* Verify that your tools if not factory set with a collar, that the collar is in the correct "window" of position on the burr. - there should be a "jig" that came with the burrs or maybe from Roland. We had a mill do the same, turns out the operator was willy-nilly tightening the collar, making it not seat properly in the collet.
* After above is checked, calibrate
* Check a crown; if that's no good and the burrs are new, you may need to replace the spindle. Not 100% sure on the life on those, but I know there is a limit. (50k or 500k hours maybe?)

I hope this helps out, and goodluck!
- Josh
 
tehnik

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I am actually surprised that no one has mentioned the rails. Clean and re grease the rails as these play also a major role in milling quality.
 

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