![]() ![]() ![]() To be specific, those are not keeping depth of a thread very well. This is why poor spindles, with high inertia do not perform well on rigid tapping. More important is dynamic (acceleration) behaviour during tap reversal. In fact for rigid tapping constant spindle speed is not so relevant. In the video above (Status TAB) you can see spindle speed variations: 1000rpm commanded, ~1015rpm actual. If so, would you mind sharing how you made that happen, and how you got the actual speed to display next to the commanded speed?Īctual speed is a raw value from Mesa registers. Spindle in positioning mode has LinuxCNC PID, this is used for ATC spindle positioning. However speed is well maintained by servo drive itself (speed loop in servo drive). Spindle in velocity mode has no LinuxCNC PID.
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