11/10/2020 7:56 AM | |
Posts: 1 Rating:
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Hello friends, We are facing a circularity issues while machining of circle of 1500mm diameter on HBM(JUARISti MS-5 ram machine) with feed rate of 600mm depth of cut of 1mm. Ovality of 2mm has been observed. It is showing variations in quadrant I and 3 (diameter increased) and in quadrant 2 and 4 (diameter decreased). X axis is driven by rack & pinion arrangement and there is no backlash when checked with dial. It's response while moving in hand wheel with 0.01mm feed is slow but gradual and in movement in 0.1mm feed it responds quickly.Y axis is having ball screw mechanism and responds quickly. Both the axis are having hydrostatic lubrication and having a lift of 0.02mm as mentioned by OEM. Can anyone suggest what parameter to alter in the system so as to minimize the errors. We have carried out the ball bar test a year ago and the results are, Reversal spikes 400micron, Servo mismatch -14.34ms Reversal spikes X axis - 289.5micron Scaling mismatch 83.9micron Kindly help me on which parameters to adjust in order to achieve a better results ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 11/10/2020 12:15:51New subject after splitting |
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