![]() ![]() ![]() Speed is determined by the alignment and friction.Įach part of your machine is at a different temperature depending on what it is currently doing, this directly influences your accuracy in movement caused by deformation of the components. When critical speed is reached vibrations increase, accuracy drops and performance decreases. Quality of the guide rails is critical on linear motion and is influenced by alignment, surface texture and temperature. Travel accuracy measures pitch (up and down), yawing (side to side) and rolling (around axis). Watch Your Speeds, Temperature & Vibration *Bonus did you know: A great contributor to “chatter” can be caused by your spindle. This chatters results in slight rotations in the nut causing it to loosen up. If you’ve ever had screws in your dining room or kitchen chairs you’ll notice that every month you have to re-tighten them, this is caused by vibration which is causing micro chatter between the nut and the thread. This means no humming, vibrations or low friction. #Cnc usb controller jerky movements softwareThe software simply subtracts out the backlash depending on which side of the threads are currently making contact.įor electronically compensated backlash to work, the software must know the amount of backlash and both your carriage and nut must be stable. The control knows when to add in this additional movement by the direction it is commanding the machine to move. Software backlash compensation works by entering the given or measured backlash of the machine into the control system. An anti-backlash nut is a “preloaded”, self-adjusting nut and applies force or squeezes the difference in a thread’s spacing, maintaining a constant contact with the surfaces of the screw. This is a split nut that pulls in both directions on the thread, reducing the slop. ○ Temperature is a big part of backlash, make sure to have a temperature controlled environment or you will be endlessly tracking down your backlash.Īnother way to decrease backlash is with an anti-backlash nut. ○ Spindle vibration causing undesirable movement in carriage. Symptom: Drawing significant % of current while idle. ![]() Symptom: Hunting for correct position, slop in axis.○ Servo gain issue (How aggressively the drive response to commanded position and actual position). Symptom: Vibration occurs when axis is in motion, low humming noise.If you are experiencing excessive vibrations, chattering or rumbling simply adjusting backlash is not a solution and further investigation of the problem will be needed. Backlash compensation will improve positioning accuracy but will not alleviate vibration or mechanical performance. ![]()
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