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Method for measuring roll profile and apparatus therefor

  • US 4,916,824 A
  • Filed: 08/19/1988
  • Issued: 04/17/1990
  • Est. Priority Date: 09/01/1987
  • Status: Expired due to Term
First Claim
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1. A method of measuring a roll profile with radial deviations along the axis of a work roll of a rolling mill, which comprising the steps of:

  • providing a plurality of profile measuring displacement detector means at locations spaced along an elongated displacement detector mount means adapted to reciprocally move along the axis of said work roll for measuring said roll profile over one of a plurality of divided zones extending along the axis of said work roll;

    providing at least three motion error measuring detector means at intervals La and Lb along said displacement detector mount means for measuring errors in motion of said displacement detector mount means at intervals of La and Lb along the axis of said work roll;

    shifting said displacement detector mount means along the axis of said work roll to locally measure fractional deviations of the work roll existing along the axis thereof with said profile measuring displacement detector means and with said motion error measuring detector means;

    calculating a current error in motion of said displacement detector mount means from the result of measurement from said motion error measuring detector means;

    correcting the measurement of said profile measuring displacement detector means in conjunction with the errors in motion of said displacement detector mount means obtained from said calculation; and

    summing the measured profile deviations after having been corrected in conjunction with the motion errors of said detector mount means to obtain deviations along the entire axis of said work roll.

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