On Nov 13, 2012, at 2:39 PM, Viesturs Lācis wrote: > 2012/11/13 Peter C. Wallace <p...@mesanet.com>: >> >> You can sense ferror or PID output (on a torque mode drive) >> on a voltage mode drive like the 7I39, ferror (and a slow move >> against a resiliant stop) is probably the best route for >> "switchless" limit sensing > > Thank You! > I better will try to make a mount for torch, where it can slide a > little and attach a small switch to it. > I might use this option, if everything else fails, because moving > rigidly attached torch into material does not sound very encouraging > and I am not sure that client will understand that too :)
Just my 2¢ I think if the axis itself doesn't have any intentional backlash, you could mount the torch with a stiff spring. In normal operation you won't have any backlash from the spring (only if it hits the work piece). My 3D printer table is actually mounted on springs, and in normal operation the springs do not adversely affect the quality. The springs primary function is to allow the table to be leveled by tightening a bolt on each corner, but I have seen the springs allow it to compensate for extra ooze. Without the springs the stepper motors will lose position, with the springs the table just brief lowers to compensate for the extra material. Cheers, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated <http://3DTOPO.com> Phone: 208.462.4171 ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
