Long post: Trying to solve X,Y axis creep. Help!
26 Apr 2022 10:43 #241278
by andypugh
Replied by andypugh on topic Long post: Trying to solve X,Y axis creep. Help!
I can see no plausible reason that changing the pulleys would fix this issue.
There is next to no risk of rounding errors being to blame, steps are accumulated in a 64-bit buffer and all floating point numbers are double-precision.
I am glad it is fixed, but suspect that the 22T pulley was slipping.
There is next to no risk of rounding errors being to blame, steps are accumulated in a 64-bit buffer and all floating point numbers are double-precision.
I am glad it is fixed, but suspect that the 22T pulley was slipping.
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- LinfieldGarage
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26 Apr 2022 10:55 #241280
by LinfieldGarage
Replied by LinfieldGarage on topic Long post: Trying to solve X,Y axis creep. Help!
I’m with you Andy, my experience is that gears are gears….
I verified that there was no slippage on the shaft, but I wonder if those 22T pulleys are the wrong pitch, causing the belt to ride in and out of the dips and essentially slipping. It’s unlikely that 3 gear drives would slip at exactly the same rate, especially 2 motors on the gantry. It always stayed square.
I’ve got the machine updated to 2.9 and running QTplasmac now. The touch-off is working and I’ll be connecting the plasma tonight. If all of the THC signals look good, I’ll be making sparks soon.
I verified that there was no slippage on the shaft, but I wonder if those 22T pulleys are the wrong pitch, causing the belt to ride in and out of the dips and essentially slipping. It’s unlikely that 3 gear drives would slip at exactly the same rate, especially 2 motors on the gantry. It always stayed square.
I’ve got the machine updated to 2.9 and running QTplasmac now. The touch-off is working and I’ll be connecting the plasma tonight. If all of the THC signals look good, I’ll be making sparks soon.
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