Givi Misure VISION 700, Инструкция по эксплуатации

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10/06/2008 M042.E GQ
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F 31 NON-LINEAR CORRECTION (10 POINTS)
The machining errors which can be originated by geometrical defects of the machine-tool
due to wear or to a lack of linearity of the guides, coupling clearances between the
Carriage and the guide, badly distributed weights and so on may even be considerable.
If the errors are of the linear type, but proportional only for some spaces to the value of
the displacement carried out, they can be offset by means of the non-linear correction
function. The different correction factors
CF needed are automatically calculated on the
basis of the positions which define the different segments ( up to 10 segments ), set by the
operator.
Let us suppose that we have checked the positions on the X axis movement (X axis
display reading) and we have found a positive error if the machining operations are
carried out between position 500 mm and 900 mm and a negative error if the machining
operations are carried out between position 950 mm to 1350 mm. That means our
machine has a defect on two segments, as it is shown below:
segment
1) mm 400.20 with an error of 200 µ m
segment 3) mm 399.88 with an error of 120 µ m
in segment 1 we have 400.20 : 400.00 = 1.0005 (CF)
in segment 3 we have 399.88 : 400.00 = 0.9997 (CF)
in segments 0, 2, 4 we have (CF) = 1.0000