Повышение эффективности использования металлорежущих станков
: магистерская диссертация

Translated title of the thesis: Improving the efficiency of machine tools: Master's thesis

Student thesis: Master's Thesis

Abstract

The paper studies the efficiency of using CNC lathes in modern machine building on the basis of the exploitation analysis for the last 30 years.
For clarity, we used histograms of the parts the distribution by diameter and length for cartridge and cartridge-centering machines, an indicator of the intensity of the use of CNC machines, called the coefficient of the implementation of technological capabilities of the machine.
The paper presents the development of performance indicators of machines based on the complexity theory Yu.S. Sharin and directly the technique, allowing to calculate the return on assets. Its advantage is that it becomes possible to determine the return on assets directly during production, which cannot be done in economic calculations. And in enterprises, the estimation of the return on assets is now being made larger. This is the novelty of the work. The conducted studies showed that the extensive use of the machine tools β ̅ (according to the working time) in the surveyed enterprises averages approximately 54%. And the intensity of using CNC machines is realized most often by 26%, and on average by 34%. Along with the extensiveness and intensity coefficients in machine building, this indicator of the efficiency of machine tools is often used as the integral coefficient δ, which is a function of α and β, its value is δ ̅≈0.182. That is, in the surveyed factories, CNC lathes are used on average only by 18.2%. Based on the data obtained, methods were developed to increase the efficiency of machine tools and their return on capital, based on Lagrange's method of uncertain multipliers.
Date of Award2017
Original languageRussian
Awarding Institution
  • Ural Federal University
SupervisorЯков Львович Либерман (Supervisor)

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