Electronic Indexers – How Is Cumulative Error Avoided?

[John HaineParticipant @johnhaine32865]

Apologies Joe, but your reply seemed to indicate that the tool acceleration had to match the spindle acceleration in the run-up.

[Neil WyattModerator @neilwyatt]

Posted by Andrew Johnston on 02/06/2019 23:38:44:

Posted by SillyOldDuffer on 02/06/2019 11:25:06:

Engineering is all about balancing compromises.

Actually engineering is all about money, in the sense of what will a feature cost and will the market be prepared to pay for it?

Andrew

Isn't that just aspect of the classic engineering compromise: good, cheap or fast? – Pick one.

[sam sokolikParticipant @samsokolik60334]

 

Posted by Joseph Noci 1 on 02/06/2019 21:18:16:

 

Linux CNC 'tries' to implement this same process, but the clan missed the boat.. It has warts and can bite you in the backside if not careful. I did raise the issue with the devs, who said thanks , we will look into it, but the latest but one release still has the issue…It works ok, 99.9% of the time, but you can crash a machine..

 

regards

Joe

 

Edited By Joseph Noci 1 on 02/06/2019 21:24:49

 

I am confused.. What does linuxcnc fail at .1% of the time?

Also – linuxcnc has a robust hardware abstraction layer that allows for some pretty amazing setups. All with a cheap computer… All double-precision floating-point calculations..

Things like hobbing…

https://www.youtube.com/watch?v=ZhICrb0Tbn4

Edited By sam sokolik on 05/07/2019 14:19:34

Edited By sam sokolik on 05/07/2019 14:20:44

[sam sokolikParticipant @samsokolik60334]

BTW – it isn't like things are not getting improved.. This was less than 1 month ago… Related to spindle synced motion..

Code improvements..

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