Productivity as Measure of Multiproduct Metal Processing Production Efficiency

Development of Flexible Fixtures with Incomplete Locating: Connecting Rods Machining Case Study

“…For example, parts of the cylinder-piston group cannot be made of composite materials because composites cannot withstand high temperatures without destruction and changes in shape. Secondly, at the enterprises to produce spare parts, much attention is paid to the intensification of production [6,7], which aims to reduce the time of manufacture of the finished part/product and reduce costs. Simultaneously, enterprises are ready to spend money on purchasing advanced metal-cutting machines and other equipment, which allows to reduce the share of manual labor of the worker to a minimum or exclude it altogether.…”

Controlling the Properties of the Surface Layers of Parts by Forming Regular Micro-Reliefs

“…This is due to the processes occurring in the surface layer: stress concentration, microcrack development, burning of alloying elements, softening, wear, redistribution of residual stresses, etc. It is possible to improve the reliability of machines by finishing-hardening treatment, which changes the properties of the surface layer over wide range [1][2][3][4][5][6][7][8]. The quality of the surface layer, i.e.…”

“…The use of some surface plastic deformation methods, i.e. vibration smoothing, diamond smoothing, provides a regular micro-relief on the part surface, reduces roughness, and increases the bearing and supporting capacity of the surface layer [1,2,5,[9][10][11][12][13][14]. For example, the vibrationally smoothed surfaces successfully combine the properties of rough and smooth surfaces: reliable preservation of lubricants in the grooves of the microrelief and increased bonding resistance and low loading of microirregularities, fast conformability in operation and high wear resistance of the surface [10][11][12]15].…”

“…An important reserve of modern technology in increasing the carrying capacity of machine parts can be combined processes based on surface plastic deformation together with other methods: heat treatment, coating, etc. [5,7,12,[15][16][17].…”

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“…This dynamism requires that competitiveness levels and productivity are developed; among the strategies to achieve this are found the reduction in fixed production costs and in prices of final products (Alvarez and Durán, 2009;Kosov et al, 2018). According to Kondakov, productivity is defined as the amount of input that becomes output, as well as companies must manage their processes and resources use to achieve greater efficiency in their operational costs (Kondakov, 2016).…”