Check also any bearings and thrust bearings for wear, sometimes the turret will not lift parallel, hence they stick
Sent from BlueMail On 24 Nov 2016, 19:35, at 19:35, Leonardo Marsaglia <leonardomarsagli...@gmail.com> wrote: >Hello to all. > >I have a little problem (I hope it's a little one) with the claping on >the >turret of the Mazak QT20. > >The clamping works with a hydropneumatic system and by looking at it, >it >has some amplificators of force on the back of the charriot. > >The problem is, the turret won't unclamp sometimes, and if it does it >takes >a little while. Then when it clamps again sometimes I can see it's not >a >soft and natural clamping. We checked and replaced the o-rings on the >turrent side, and I checked the electrovalves on the back. The valves >seemed to be a little sticky on the return stroke but I cleaned and >lubricate them and by hand the worked ok. I don't know if that could >cause >the erratic problem. > >Another thing that happens when the turret doesn't want to unclamp, is >that >the air relief on the electrovalve keeps blowing until I turn off the >machine or until I press the clamp button again. (When this happens the >turret doesn't even want to unclamp). > >I can't find any docs about the circuit, and I don't have schematics >about >the hydropneumatic circuit on the manuals I have. So I came to the only >place I know I will have the best answers :) > >Thank as always! > > >-- >*Leonardo Marsaglia*. >------------------------------------------------------------------------------ >_______________________________________________ >Emc-users mailing list >Emc-users@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
