Aaron, > The gantry weighs about 70Kg and I have 16mm lead screws with > 4mm pitch. Could some one tell me what specs I need so i can look out for > stuff on ebay UK. >
I have 6.4 Nm (~ 900 oz inch) motors, my gantry weighs about 80-90 Kg and 16mm lead screws with 5mm pitch. The motors are way too strong but my microstepper drivers are not able to get the motors running faster than 400 revs/min. Motor type is 34SM095-064-8W-SB12-6.4 and the drivers MSD-50-5.6 connected to a 42 V powersupply, both from www.stappenmotor.nl. Force applied on the gantry goes up to 4000 N - this is big, too big. 2.5 Nm should be big enough, even for such a heavy machine. I am going to buy an extra 2.5 Nm motor for the A-axis, hoping that this motor (as promissed) will give a higher speed. If you can, buy a combination that is specified with the wanted max. speed you want. For motor drivers: use only current controlled types with as high as a voltage as you dare. The higher the max. output voltage, the more speed you'll reach. Select a driver with (at least) a 40 volt supply voltage for good results. Rob ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
