| 摘要 |
PROBLEM TO BE SOLVED: To provide a shape evaluation method and a steel plate shape correction method, capable of properly correcting a steel plate shape, by properly evaluating the shape by specifying a frequency of shape evaluation.SOLUTION: When evaluating a shape of a shape measurement surface of a shape evaluation object body by using a computer having the arithmetic processing function, a difference in the preset length is applied to the shape measurement surface of the shape evaluation object body, and a clearance is determined by making a band-pass filter act on point group data of a measurement point position on the shape measurement surface of the shape evaluation object body by using the band-pass filter having a frequency response characteristic when measuring the clearance between the difference and the shape measurement surface. Thus, the clearance between the difference and the shape measurement surface can be accurately determined by setting the band-pass filter as a band-pass filter for determining curvature of the shape measurement surface, or by setting the band-pass filter as a band-pass filter for determining a difference between output of a low-pass filter being high in frequency and output of a low-pass filter being low in the frequency. |
