On 24 October 2013 19:00, Tomaz T. <[email protected]> wrote: > Does anyone here have any experience with chinese motorized rotary stages, > like this one: > http://www.alibaba.com/product-gs/615993083/LSDH_100WS_Worm_gear_motorized_rotary.html
The maximum static torque quoted sounds rather wrong. > I'm a bit worried about actual accuracy and amount of backlash. If it would > be worth of buying it... anyway, is there a way to have actual position > feedback from table, not only from motor (in case of servo motor) ... I mean > retrofitting it with a kind of "encoder"? All things are possible. Simplest might be a magnetic tape scale around the outside. http://www.machine-dro.co.uk/digital-readout-systems/magnetic-linear-encoder-reading-head-25-micron-resolution.html Better would be: http://www.renishaw.com/en/resolute-rotary-angle-absolute-encoder-options--10939 But I suspect if you were in that market you wouldn't be looking at Chinese rotaries. If you don't need the through-hole then you could easily hide an encoder in there. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
