Application of parametric standardization in the calculation of rows of hydraulic cylinder diameters

Abstract

Currently, the ordering of standardization objects and their properties, optimization of the parameters of standardization objects, normalization of requirements for objects are the most important areas of standardization as a science. In this regard, the issues of choosing parametric series are very relevant. In order to increase the level of interchangeability and reduce the range of products and standard sizes of blanks, overall cutting tools, tooling, productivity, speed, speed, power, etc., used in a particular industry, as well as to create conditions for effective specialization and cooperation of plants, reduce the cost of products, the principle of preference is used in the unification and development of standards. There are two methods for choosing parametric series: the method of technical justification and the method of economic justification. The technical method is easier to use and is used to expand the technologies of unification of standard sizes of parts of homogeneous products. This method was used to calculate a number of diameters of hydraulic cylinders of broaching machines of the same series based on the mathematical dependence between the force developed on the hydraulic cylinder rod, which is formed by the initial parametric series laid down by the designers. As a result of technical optimization of the choice of the parametric series, a number of diameters of hydraulic cylinders R20/2(45-224) mm was installed, fully corresponding to the main functional parameter - a number of forces on the rod of broaching machines R10/2(0.63-16.0) kN.