Hi!
I've converted a micro lathe (SIEG C1) to CNC. Originally I had two 6mm micro ballscrews on Z and X.
Recently I adapted a 10mm (2mm pitch) ball screw with double nut (back to back) on the Z axis.
But my X axis, is stilll the single nut 6mm (1mm pitch) ball screw. I plan to use the nut from the old 6mm Z ballscrew into the X to make it double nut also.
But I'm experiencing a vertical line pattern, close to 2 - 2.5mm each vertical line when turning a part in aluminum which is what I use most. The cnc works ok, but I don't remember having this pattern in the past.
I Adjusted the Z and X gibs the most I could to get the most rigidity possible without making the axis' too hard to move.
Would this be a problem in the x axis or in the Z axis?
I suspect it's something in the X axis ball nut.. . If I keep hand pressing the QTCP forward (in the X- direction) the lines seem to disappear....
Could this be related to this single 6mm ball nut ... allows some axial movement? If I use the remaining 6mm ball nut from the old Z screw, in a back to back way, could this be fixed?
Thanks for reading, regards, Rodrigo