Re: [Emc-users] jerk control

2021-08-27 Thread Chris Albertson
The software in the link below is very widely used in industry. It is used inside MoveIt which in turn is driving many complex machines. https://moveit.ros.org On Fri, Aug 27, 2021 at 11:52 AM Curtis Dutton wrote: > That thread leads to this. https://githubhelp.com/pantor/ruckig > -- Chris A

Re: [Emc-users] New zero backlash gearbox

2021-08-27 Thread Eric Keller
On Fri, Aug 27, 2021 at 3:12 PM Mark Johnsen wrote: > The galaxie's are really expensive. The average LCNC'er would freak out at > the price and not go w/ it. > How much? I have bought stuff from Schunk for work, so I doubt the price would surprise me much. I'm not buying a new harmonic drive

Re: [Emc-users] New zero backlash gearbox

2021-08-27 Thread Mark Johnsen
I've seen both harmonic gearboxes and that Galaxie put into robotic applications. The Galaxie is super strong, high torque, and has very good stiffness from input to output, which is critical in some (medical) robotic applications. The max output speed is probably lower than the harmonic drive, b

Re: [Emc-users] jerk control

2021-08-27 Thread Curtis Dutton
That thread leads to this. https://githubhelp.com/pantor/ruckig Pretty interdasting! On Fri, Aug 27, 2021 at 12:36 PM Andy Pugh wrote: > > >> It will require jerk limiting to really get the value out of the > machine. > > There is a jerk-limiting component in the forum > > > https://forum.linux

Re: [Emc-users] jerk control

2021-08-27 Thread Andy Pugh
>> It will require jerk limiting to really get the value out of the machine. There is a jerk-limiting component in the forum https://forum.linuxcnc.org/47-hal-examples/43401-hal-s-curve-component-for-download-loadrt-dofs-x It sacrifices path accuracy for jerk limitation (or so I assume) but wo

Re: [Emc-users] New zero backlash gearbox

2021-08-27 Thread John Dammeyer
Perhaps these are over designed for a lot of projects? >From what I understand robots and even the Canadarm on the ISS use the >harmonic drives for the joints. Suppose I wanted to build a duplicate of this with slightly longer arms. https://en.wikipedia.org/wiki/Armatron I have one of these

Re: [Emc-users] New zero backlash gearbox

2021-08-27 Thread andy pugh
On Fri, 27 Aug 2021 at 00:42, Leonardo Marsaglia wrote: > > Really nice. Looks similar to a harmonic drive but more complicated. It > would be awesome to see what are the advantages of these over harmonic > drives. It looks a lot stronger. -- atp "A motorcycle is a bicycle with a pandemonium at