The crushing equipment is characterized by a significant energy-consuming system during the crushing workflow. The current trend in the development of such processes puts forward requirements for the development of new or improvement of existing energy-saving equipment. The essence of the solution to the problem in this work is determined by using resonant modes, which are inherently the most effective. The practical implementation of the resonance mode has been achieved taking into account the conditions for the interaction of the resonant vibration crusher with the material at the stages of its destruction. The degree of the stress-strain state of the material is taken into account, which was a prerequisite for identifying the potential for the development of a vibration load. Composed equations of motion based on a substantiated discrete-continuous model of a vibration crusher and processing material. An approach is applied to determine the stepwise destruction of the material with the determination of the required degree of energy. This methodological approach made it possible to reveal the nature of the process of material destruction, where energy costs at the stages of crack formation, their development and final destruction are taken into account. It was revealed that the greatest energy consumption during the operation of crushers goes into the kinetic energy of the crushing plates and the potential energy of deformation of the springs. The proposed model is common for any design of a vibration machine and its operating modes. The stable resonance mode has made it possible to significantly reduce the energy consumption for the course of the technological process of material grinding. The results obtained are used to improve the calculation methods for vibratory jaw and cone crushers that implement the corresponding energy-saving stable zones of the working process.

In the research, we proved that the optimum level of energy is the basis for an effective treatment of materials using ultrasonic cavitation. The key energy parameters are the pressure at the contact zone of the cavitator and material, and the speed of the contact zone movement. The main objectives of our work were to investigate the changes in the pressure components and determine their values considering the rheological parameters and the parameters of the dynamic material and cavitator. To achieve the objectives, we researched the elastic and dissipative components of rheological properties and determined their functions depending on the parameters of ultrasonic vibrations. The research methodology was based on the use of the fundamentals of the classical theory of acoustics. The mathematical description of the process was done using a model system including an acoustic apparatus and environment; this model was made by the authors. We calculated dissipation with the equations for environment motion considering two different laws of dissipation-factor changes; this was the requirement of the new model system. We proposed a new mathematical model; the researched system of the acoustic apparatus and the environment was considered as a whole. So, the elastic and dissipative parameters of the system were regulated among themselves. The selected mechanism of the regulation parameters was a system in resonance, achieved with a high-quality process of cavitation with a minimum energy consumption. We found the analytical dependence for determining the dynamic pressure on the environment with the acoustic apparatus. These dependencies provided the basis for assessing the influence of rheological properties on the treatment process using ultrasonic cavitation. Keywords: material, rheological properties, ultrasonic cavitation, energy, pressure V pri~ujo~i raziskavi so avtorji dokazali, da je optimalni energijski nivo osnova za u~inkovito obdelavo materialov z ultrazvo~no kavitacijo. Klju~na energijska parametra sta tlak v kontaktni coni kavitatorja in materiala, ter hitrost gibanja kontaktne cone. Glavni cilj raziskave je bil dolo~iti njune vrednosti ob spreminjanju tla~nih komponent, z upo{tevanjem reolo{kih parametrov in parametrov dinamike materiala in kavitatorja. Da bi dosegli cilje raziskave, so avtorji raziskovali elasti~ne in disipacijske (izgubne) komponente reolo{kih lastnosti in dolo~ili njihove funkcijsko odvisne parametre ultrazvo~nih vibracij. Raziskovalna metodologija je temeljila na uporabi temeljev klasi~ne teorije akustike. Za matemati~ni opis procesa so avtorji uporabili lastni modelni sistem akusti~ni aparat -okolje. Izra~unali so disipacijo v ena~bah za gibanje okolja z dvema razli~nima zakonoma sprememb faktorjev disipacije; to je bila zahteva novega modelnega sistema. Avtorji so predlagali nov matemati~ni model; raziskovani sistem akusti~ni aparat -okolje, ki so ga obravnavali kot celoto. Tako elasti~ni kot disipacijski parametri sistema so med seboj samoregulirani. Izbrani mehanizem parametrov reg...

Розроблена нова схема збудження коливань робочих органiв блокiв вiбрацiйної установки на основi змiни фазових кутiв дебалансiв мiж собою. Реалiзацiя такої iдеї дозволяє за один оберт дебалансiв здiйснити ту кiлькiсть вiбродiй на технологiчне середовище, скiльки вiброблокiв має установка. Таким чином реалiзовано спектр частот, що значно пiдвищує ефективнiсть технологiчного процесу. Запропонована схема придатна для реалiзацiї рiзних процесiв iз зменшенням енерговитрат у порiвняннi з iснуючими конструкцiями вiбрацiйних машин. Розроблена конструктивна схема вiбрацiйної установки iз чотирма вiбрацiйними блоками. Вибрана математична модель на основi представлення параметрiв машини дискретними, а оброблювальне середовищеконтинуальними. Моделювання робочого процесу вiбрацiйної установки виконано на основi використання методу скiнченних елементiв. Скiнченно-елементна модель складена шляхом апроксимацiї всiх несучих елементiв, в тому числi i формо утворюючої поверхнi, двовимiрними скiнченними елементами. Вiброiзоляцiйнi опори та пружнi елементи моделi прийнятi тривимiрними, так як процеси, що протiкають в таких елементах конструкцiї, є бiльш складними з точки зору розсiяння енергiї. Дослiджений робочий процес енергоощадної вiбрацiйної установки, що реалiзує полiфазнi коливання. Складенi рiвняння руху такої системи та визначенi амплiтуди та частоти коливань, що визначають цей рух. Здiйснена оцiнка розподiлу амплiтуд коливань по периметру рами, закрiпленої на вiбрацiйних блоках вiброустановки. Визначено можливiсть ефективного використання полiфазного спектру коливань при виконаннi процесiв сортування та ущiльнення матерiалiв на основi реалiзацiї зсувних та нормальних напружень. Запропонована схема енергоощадної вiбрацiйної установки та визначенi параметри вiдкривають реальну можливiсть для використання в рiзних галузях. Отриманi результати використанi при проектуваннi енергозберiгаючої конструкцiї вiброустановки iз врахуванням фазових кутiв для ущiльнення технологiчних середовищ Ключовi слова: вiбрацiйна установка, вiброблок, дебаланс, модель, фазовi кути, амплiтуди, частоти i форми коливань

Performance characteristics of the products made of metallic materials such as wear resistance, fatigue strength, stability of gaps and strain between the connections, corrosion resistance, etc., depend to a large extent by the quality of their surfaces roughness. An interactive control of the manufacturing parameters which influence the surface roughness is particularly crucial in the construction of many mechanical components. The present paper devises a new method for statistical pattern recognition on samples produced by the process of robot laser hardening using network theory and describes its application to the determination of surface roughness. The method is based on the analysis of SEM images. Indeed the data characterizing the state of surface irregularities detected as extremely small segments contain indicators of surface roughness. Different methods of machine learning techniques designed to predict the surface roughness of robot laser hardened material are discussed.

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