钢丝钢绳生产工艺参数相生产定额等的计算,是金属制品专业的生产技术、管理、工艺设计人员和有关工人经常遇到的。这些参数用通用计算尺或电子计算机来计算,需要记住大量运算公式,且计算方法繁、步骤多,易于造成计算错误。当然也可用数表形式,事先算好备查。这种方式也曾用过,例如:仅计算捻股机作业率一项,就有6个变数,且变数范围 Steel wire rope production process parameters such as the production of fixed-value calculation, metal products, professional production technology, management, process designers and workers often encountered. These parameters are calculated using a common slide rule or electronic computer, and need to remember a large number of calculation formulas, and the calculation method is complicated and the steps are many, which is easy to cause calculation errors. Of course, the form can also be used digital meter, prepared in advance for future reference. This method has also been used, for example: only calculate the twist of a machine operating rate, there are six variables, and variable range