| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for measuring the length of a roll for plate processing and a taper shaft hole which are measured, so that various sizes of rolls for plate processing are handled in a full-automatic plate-making factory, at the time when the roll for plate processing is handles first time and registered in database, to be utilized later when the roll for is handles. SOLUTION: A conical measurement corn T, being away by distance H1, is lowered to be engaged with the taper shaft hole on the upper end surface of a roll R for plate processing R, and at the same time, a detection rod K which is higher by distance H2 than a peak P is lowered together with the conical measurement corn T, to be contacted early to the upper end surface of the roll, for rising relatively. Falling stroke S1 of the conical measurement corn T and relative rising stroke S2 of the detection rod K are measured, length L of roll R for plate processing R is calculated from an expression L=H1+H 2-S1+S2, and, diameter D at the end surface of taper shaft hole of the roll R for plate processing is calculated from an expression d=2×(H1+S2)×tan(αdeg.C×1/2) (αdeg. in this expression is the conical angle of the conical measurement corn T).
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