Entropy minimization in sheet material shearing technologies as an indicator of reducing waste formation in the source of origin

Abstract

The work attempts to create a technology of blank cutting, in which all the components obtained during the process had their own commodity value. In other words, a methodical attempt has been made to implement the principle of thermodynamic bi-unity in the technological process. It has been shown that most cutting technologies under any conditions produce more than 30% of residual material waste, which is to be recycled. The silhouette of the residual pattern, obtained on the original canvas after cutting the washers of the required size and quantity serves as the basis. The condition for the functioning of such a canvas is the light transmission through the numerous holes remaining in the canvas after cutting, as the main technology. A model for ensuring the range of initially required products has been developed and the main sources of energy to ensure it have been identified. The boundary conditions for light transmission through the canvas with the holes of the required size after cutting washers and overlaying the holes on the matrix fragment of the residual canvas have been presented. The indicators that determine the boundary conditions for the order of the washers and the residual canvas as a work of art have been formulated and the results of such a calculation have been presented. An algorithm has been compiled and a computer program has been developed that ensures the creation of an artwork on the cutting canvas in real production conditions. The block diagram of the software product design technology and the manufacture of metal washers based on the imageToCirclesConverter make it easy to program the design of such a technology. The result of the implementation of this technology is the nomenclature of the main commercial products, namely, the given number of washers of the required size (several sizes, depending on the main order) and an applied artwork in the form of a matrix with a picture of tones and halftones depicted on it, visible in this matrice breaks. The number of holes and washers of different diameters reduced to the area of the canvas corresponds to the density of light transmitted through a unit of this canvas area. This ensures complete absence of technological waste and ensures maximum production efficiency. The model makes it possible to adjust the quality of the picture on the residual canvas, its clarity, perception. An example of the implementation of such a technology, its advantages and applications has been presented. In full accordance with the provisions as to the thermodynamic disequilibrium of the technological process, the parameters of such a disequilibrium for the «cloth-washer» system are presented. The calculated values of negentropy, as the effectively spent movement energy with traditional washer production technologies, have made it possible to prove that even additional energy-consuming mechanisms resulting from moving the tool when cutting washers can minimize the overall entropy of the system