On Wed, 26 Jan 2011 22:03:33 -0600, you wrote: >Eric, the friction on my linear axes is not anywhere close to the friction >in the rotary table. IIRC, it takes less than an amp to move my X axis, and >over 3 amps to move the rotary table. It has a tight worm drive. > >I will indeed look at lubing it. > >I did take apart a rotary table once (not this one). It was educational. I >will probably look at it too. > >I do not believe that any of the table locks that this table has, are >engaged at the moment. But I will double check that also.
What make of rotary axis is it? A pukka CNC, or a manual conversion? I've CNC'd several manual tables, all needed some work other than just strapping a stepper or servo on. There are a plethora of Indian, Taiwanese and Chinese tables out there and quality and design varies greatly. Shoba, Soba & Vertex spring to mind. Some have bearings, some not, but all needed at least the worm running in with light grinding and/or polishing paste to remove tight spots and get them smooth and as backlash free as possible throughout the full rotation both CW & CCW. Most need thrust bearings on the worm side to remove end float, and some also need radial bearing there too. (Had some where the shaft seizes at higher speeds)! Steve Blackmore -- ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
