The paper deals with the enhancement of the robotic arm calibration using corrections based on local linear neuro-fuzzy models. After the standard calibration of the geometric parameters in the robot's kinematic model, there are still residual errors between the measured positions and the positions predicted by the model. The source of these errors are various non-geometric parameters and nonlinear phen (…)
The study of the combustion of a gas-air mixture using burners opens possibilities for further research, in which it is possible to modify the parameters of existing burners (geometry, method combustion air distribution, ...). Flame length can be influenced by changing some of the burner parameters to achieve the best possible conditions in the combustion chamber. The topic of the article is to study th (…)
In the manuscript the main factors that affect the thermal mass of open and closed types of heat storage devices are shown. Also, the main requirements for adsorption modules are given. The calculation procedure has been refined, which includes the determination of heat load, heat of adsorption, adsorbent mass, as well as integral, structural, and specific thermal mass. The specific thermal masses of ad (…)
Demands for improving machine tool productivity and accuracy can be addressed using alternative material structures with the potential to reduce the mass of moving bodies and decrease machine tool dynamic compliance. A useful option is to apply composite materials because they offer high damping and low density in comparison with steel or cast iron. The key question is how the stiffness and damping of a (…)
The accuracy of machine tools is limited by many factors,such as geometric and thermal errors. Current error reduction approaches include e.g. volumetric compensation. However, if a machine tool has only linear axes, angular errors cannot be compensated since there is no controllable axis that could change the tool or workpiece inclination. Therefore, an actively controlled hydrostatic guideway was deve (…)
This paper focuses on analysis of tool life during milling of nickel alloy Inconel 718. Several modifications of one type of carbide tool with different cutting edge finish adjustments (lapping, drag finishing) were proposed for milling of Inconel 718. These finish adjustments significantly influence cutting edge properties (hardness, radius value, etc.). The toolpath geometry setup has a great influenc (…)
Thermal behaviour is a key factor affecting the operatingstatus of high performance hydrostatic (HS) bearings of rotational axes of machine tools (MT). This paper introduces a novel model developed for transient thermo mechanical analysis of hydrostatic guideways with a surrounding MT structure. In contrast to common approaches to HS bearing design, which only consider the static load carrying capacity, (…)
Cybersecurity of production systems is a very topical issue in response to the dangers associated with the very high number of cyber-attacks in Europe. The current digital transformation of the industry associated with the digitalisation of manufacturing brings both the positives associated with increased flexibility and productivity of production, and the negatives associated with the risk of data loss (…)
Software compensation is state-of-the-art technology used to reduce CNC machine tool thermal errors, and it belongs to a key intelligent functions of modern machine tools. However, a pretrained and nonadaptive model may not be accurate and robust enough for long-term application. This research presents a transfer function based thermal error compensation model updated via on-machine measurement. A mathe (…)
Industrial robots are used in many technical applications from simple pick-and-place tasks to complex machining, welding and assembly applications. The repeatability of the robots is usually high. However, the accuracy is much lower, and it decreases with the robot size selected. Robot calibration represents a possible way to increase accuracy, and two main approaches have been distinguished. Kinematic (…)
Measurements of the nonlinear parameter of a gel-like medium were carried out in an acoustical resonator fixed without slipping between two solid-state boundaries. A sample of thickness L is fixed on an oscillating plate (x = 0). The other plate of finite mass on the free surface of the sample (x = L) moves together with this surface. By changing the mass of the plate (x = L), it is possible to achieve (…)
The prospects for the use of polymer-polymer mixtures based on corn starch as alternative thermoplastic materials to polyolefins are considered. Rheological curves have been obtained, which confirm the possibility of processing such mixtures on standard equipment into products. It is shown that the starch content in polymer-polymer mixtures can reach 90 mass percent. Compared to existing biodegradable p (…)
One of the progressive production technologies through which it is possible to machine complicated shapes in materials characterized by high hardness is electrical discharge machining with a wire electrode. However, as with other progressive technologies, in the case of electrical discharge machining technology, demanding customer requirements for the geometric accuracy of the machined surface are not a (…)
The article's subject is the definition of areas where space is created for targeted workforce management and its successful implementation within the Industry 4.0 concept. In most cases, if we talk about the performance of Industry 4.0 elements, the investments of enterprises are primarily directed to the area of production, information and communication technologies, research and development, not to t (…)
The article deals with issues which occur when using different types of basic print speeds in metal additive manufacturing. It describes their importance, mutual relationships and their influence on the quality of pieces manufactured using this technology. The ability to manage the speed of the additive manufacturing process allows us not only to effectively improve print quality but also, for example, (…)
Natural gas is currently a hotly debated topic both from an environmental point of view due to the production of CO2 and from an economic point of view. The article is focused on the analysis of selected energy factors when burning natural gas with a gradual increase in the hydrogen content in the fuel mixture. In the article, the authors focused on modelling combustion and the influence of hydrogen con (…)
Using digital technologies in its activities, an oil producing enterprise is able to gain a success only when a strategic approach is applied and, establishing a balance between actual and actual capability is equal to capability to beneficial transformations. The oil-extracting businesses digitalization of oil producing enterprises fundamentally alters key technologies throughout the entire life cycle (…)
The present article deals with a technical design of industrial containers for bulk and piece materials. The introductory section of the article introduces several alternatives of the container types and describes their applications. The following section presents the original technical design of an industrial container, based on the theory, followed by a description of a newly developed design of an in (…)
The article is devoted to the description of the validation of the dynamic model of an angular manipulator with three degrees of freedom of movement based on the chosen course of excitation of pneumatic artificial muscles from the manufacturer FESTO. The dynamic model consists of the dynamics of the manipulator arm and the dynamics of the pneumatic part of the experimental system. The motion equations w (…)
Due to the rapid increase and development of new information technologies, it is now possible to collect real data from the production process, thereby creating an image of a real plant in a virtual environment. The concept of a digital twin in the design of production systems consists of creating a digital twin of the entire production plant, which consists of a digital, real and virtual enterprise, wh (…)
The emergency training of industrial process plant operators is one of the most widely used tools to increase the reliability of human factors to handle an emergency situation. However, the preparation and operation of full-fledged simulators and trainers is very expensive and, therefore, virtual environment tools are used. A question that has not yet been answered is: Can virtual reality match the reli (…)
Creating healthy workplaces considering ergonomic risks is becoming a necessary part of preventive approach in design of workplaces. Preventive approach has positive impact including economical, health and safety measures. Corrective approach can be used when e.g. health issues must be improved. Performance analysis is important for employers in competitive domestic or global market. If the analysis is (…)
The submitted paper analyses the check of operational capacity and of economic efficiency of the selected machines in case of the use of different types of oil, determination of mode of friction and of machine wear and specification of interval of oil change. The object of the paper is a machine park in the industrial company comprising of five machine tools. Particularly, it is the case of two grinding (…)
The reconfigurable robotic system SpinBOT Kit represents a new generation of robotic technology designed to solve the automation and robotization of production, non-production processes and service processes, with wide use in various sectors of industrial and non-industrial sectors and in municipal services. This paper presents an analysis of the parameters and characteristics of this reconfigurable rob (…)
The article deals with the issue of experimental assessment of the dynamics of worm gears. The design of the methodology and the material and technical assurance of experimental tests to determine the impact of the use of various structural modifications on the dynamics of the worm gear are described. In the pilot part of the experiment, a gearbox was tested with an original design solution of bearing t (…)
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