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目前,采用单行程工作制度的曲柄压力机的自动和自动化作业线日益得到推广。采用自动作业线时,压力机的行程利用率可达70—85%(在通常的冲压中为30—40%)。这将使压力机开动和停止时工作的部件和机构的载荷增加,首先是使开动与制动离合器的载荷增加。因此,在这种情况下对这些另件必须提出一些补充的要求:使用寿命高,并能按所需的开动次数工作。在现代的压力机制造中,计算摩擦部件寿命的公式是И.С.波别金在“重型机器制造中
At present, automatic and automated operating lines of crank presses using the one-trip working system are increasingly being promoted. With automated lines, the press’s stroke utilization is up to 70-85% (30-40% in normal stamping). This will increase the load on the parts and mechanisms that operate when the press starts and stops, primarily by increasing the load on the start-up and brake clutches. Therefore, some additional requirements must be posed on these parts in this case: high service life and the ability to work at the required number of starts. In modern press manufacturing, the formula for calculating the life of friction components is И.С. 波波金 in ”Heavy Machinery Manufacturing