On 6/12/2014 7:52 AM, Todd Zuercher wrote: > I don't really have a good reason, more exploring options and thinking out > loud, not really wanting to fight with the problems with gantries in > LinuxCNC, the machines only has 3 motors and drives, now and these model > drives, and motors and drives are discontinued so getting a matching one may > be impossible (I know I could swap the Z or X to the 2nd Y). It looks like > the mechanical drawbacks of trying to use 1 motor may be outweighing the > configuration issues in Linuxcnc.
My opinion is the most stable way to do it is with a drive shaft in the middle that has two cogged pullies or sprockets at each end and a matching cogged pulley or sprocket at each end of the long ballscrews. Run two belts or chains at each end, one to each side. If the motor is double shaft it could be put in the center of the drive shaft under the table to further reduce torsional flex. Or if the current setup is using one chain or belt connecting the ballscrews at one end, with the other ends free, just duplicate the connection at the other end. That should help some but not as much as keeping any one piece of the drive system as short as possible. > I am still in the stage of working out plans and strategies to propose to my > superiors. You know they type, "Why do you want to spend a bunch of money > upgrading the machine, its been running that way for the past 10 years", yeah > and I am continually receiving complaints about the carving quality, asking > me if there is anything I can do to improve it. --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com ------------------------------------------------------------------------------ HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing & Easy Data Exploration http://p.sf.net/sfu/hpccsystems _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
