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在锻压机械中,机械压力机和剪切机统称为冲剪床,是占比重较多的两大类别设备,广泛应用于各行各业。冲剪床有两种不同的工作状况:一是连续操作,离合器不脱开,主轴(曲轴或偏心轴)连续转动;另一是单动操作,每踩一下操纵离合器的踏板,主轴就转一周。两种操作的“行程次数”的特性不同,因而该参数的计算方法也是不一样的。特别是采用刚性联接离合器的中小型冲剪床,差异较大。单从统计学观测,连续操作的效率是单动操作效率的1.125～1.5倍。
In forging machinery, mechanical presses and shears collectively referred to as red shear bed, is accounted for more than two categories of equipment, are widely used in all walks of life. There are two different types of punching shear working conditions: one is continuous operation, the clutch is not disengaged, the main shaft (crankshaft or eccentric shaft) continuous rotation; the other is a single operation, each step on the clutch pedal, the spindle on the turn . The characteristics of the “trips” of the two operations are different, so the calculation of this parameter is not the same. Especially the use of rigid coupling clutch small and medium-sized red shear bed, the difference is bigger. From a single observation, the efficiency of continuous operation is 1.125 to 1.5 times the efficiency of a single operation.