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两个受压滚子的接触应力可用著名的赫芝公式计算,但是对于两个不等长的滚子其接触应力的分布是不均匀的,在接触线的两端存在着最大的应力,它是失效的根源。凸度滚子将能使应力重新趋于均布。用光学干涉计量术检测凸度滚子的接触印痕可以对凸度值测量,精度达0.295微米。
The contact stress of the two pressed rollers can be calculated using the well-known Hertz formula but the distribution of contact stress is inhomogeneous for two unequal-length rollers with the maximum stress at both ends of the line of contact, which Is the root cause of failure. Convex rollers will tend to re-tend to be uniform. Optical interference metrology to detect crown roller contact impressions can be convexity value measurement accuracy of 0.295 microns.