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图示的装置可用来测定内、外圓柱表面零件(尤其是大的外形尺寸和复杂形状零件)上具有奇数棱边的棱圆度(例如,柴油机、内燃机和空气压缩机的曲轴轴颈)。该装置是由弓形夹1和测量头2组成。棱圆度的大小等于比值D_H(H-h)∶Bsin180°/n,式中D_H——轴颈的公称直径;H和h——测量头的最大和最小读数;B——弓形夹和轴颈表面接触点之间距离(常数值);n——棱边的棱数(变化值),
The illustrated device can be used to determine the degree of roundness (eg, crankshaft journals of diesel engines, internal combustion engines, and air compressors) with odd-numbered edges on inner and outer cylindrical surface components, particularly large form factors and complex shape components. The device is composed of a bow clamp 1 and a measuring head 2. The degree of edge roundness is equal to the ratio D_H (Hh): Bsin 180 ° / n where D_H - the nominal diameter of the journal; H and h - the maximum and minimum readings of the probe; B - the collet and journal surfaces The distance between contact points (constant value); n - the edge of the edge (change)