Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Hi cnczack.
Be sure that the hydraulic is off when you open the big nut in front otherwise it will be very hard to loosen it.
The taperpins are often bend, it's better to replace them. 2 short and 3 longer pins.
Grts Tom
Replacing them without re-reaming them is a sure way to get the turret out of alignment. If there isn't a master hole that didn't have a taper pin installed it takes even longer.
The taper pins can't bend without some plastic deformation of the holes
......The taper pins can't bend without some plastic deformation of the holes
If pins were in it when crashed it is proper to remove the coupling and stone down the raised metal around the pin hole. Leave out the pins on reassembly. They just add work to the job or re-aligning after the next crash with no benefit regarding machine performance.
Proof of this is that they have ditched pins on the curvic altogether.
I would think it would be like almost every other turning center.
Pull the turret
Pull the taper pins from the curvic coupling
Reinstall turret and align with a soft hammer
Tighten curvic bolts
Reinstall all bolts, sheet metal exc
I have a machine that the curvic bolts come in from the rear of the turret so you have to snug them, install the turret and align it, then remove the turret and carefully tighten the bolts without the curvic moving. Then reinstall the turret and check alignment again.
While I'm sure there are some odd ball machines out there most should be able to have the curvic aligned in an hour or so, maybe less
I want stuff to move in the event of a crash. If it moves maybe nothing will break. That said I never put back taper pins and also pulled the ground shims and side bolts that pull the head against them for tramming the head on one of my mills
This video is for an Okuma, but it's a pretty good example of the combination of mechanical adjustment and software needed:
Okuma lb25 turret alignment - YouTube
I was confused by your intial post, because X axis misalignment would just be a software adjustment. If it's out in Y, you need to rotate the curvic coupling to move the pocket up or down in Y. Because it moves on an arc, this also effects the X alignment...which is adjusted with a software parameter.
Good luck, it mostly just fussy and annoying but satisfying once you get it dialed!
Hahn Rossman
Leave the coupling bolts slightly loose, reassemble the turret to the machine, then indicate a tool pocket by jogging the X axis. The tool slot should indicate 0-0. If not, put a bar in a tool pocket and pry the turret to shift it rotationally on the coupling. Re-indicate the pocket- rinse and repeat. Then remove the turret and tighten the crap out of the coupling bolts and then reassemble things. IT may not seem like much, but the clearance between the bolt bores and the bolts will be enough to shift things around. Hope this clarifies things. Kinda barbaric, but that's how its done. You might need a LONG bar in the tool pocket to shift the turret into position. A few whacks on the bar with a BIG hammer may also be needed depending on how "snug" you tighten the turret/coupling bolts. Not tight enough and you loose alignment when you pull the turret back off- too tight and you can't tweak the turret.
Notice
This website or its third-party tools process personal data (e.g. browsing data or IP addresses) and use cookies or other identifiers, which are necessary for its functioning and required to achieve the purposes illustrated in the cookie policy. To learn more, please refer to the cookie policy. In case of sale of your personal information, you may opt out by sending us an email via our Contact Us page. To find out more about the categories of personal information collected and the purposes for which such information will be used, please refer to our privacy policy. You accept the use of cookies or other identifiers by closing or dismissing this notice, by scrolling this page, by clicking a link or button or by continuing to browse otherwise.