The subject of the patent application is a hydraulic device for active, high dynamic retaining of a package of laminations of an electromagnetic core in a forging press. Retaining is carried out with a hydraulic system where the parameter is a very high dynamics of the system. The high dynamics of the hydraulic retaining system was enabled by using an appropriate hydraulic high dynamic servo valve and by an appropriate newly developed control algorithm.
F.32 International patent
COBISS.SI-ID: 11303963Spray for targeted application of phytopharmaceutical preparations in permanent crops based on the machine vision to identify the presence, position and density of vegetation. The corresponding high dynamic hydraulic control system controls the position of the robot hand of the sprayer as well as the appropriate amount of volume flow of the phytopharmaceutical preparation. In this way, a drastic reduction in the consumed quantity of the phytopharmaceutical preparation is achieved and hence a pollution of the environment is considerably reduced.
F.32 International patent
COBISS.SI-ID: 4530024Three new approaches and models are developed for improvements related to manufacturing processes. The main focus is on planning in a digital environment before the actual manufacturing process is carried out. The first approach, which will be presented in this paper, is digital manufacturing, which gives us an opportunity for performing an entire manufacturing process in a virtual environment. In this way, engineers virtually define, plan, create, monitor, and control all production processes. The planning phase can be done simultaneously, while other manufacturing processes are already in place. In this way, processes can continue with no interruption. Various product lifecycle management tools have databases of various programs that are used for interfacing and communication with machinery, such as CNC machines and industrial robots. Ideally, after the manufacturing process has been verified in the digital environment, control data can be uploaded to numerically controlled machinery so that the production process can start. Two special models, presented in this study, have been developed for more detailed insight into special types of manufacturing processes. The second approach represents a model for the unique type of production that takes into account all resources as the most important factor in the manufacturing processes. The main variables that were included in this model are the availability and the presence of all required manufacturing resources needed for every single manufacturing operation. The third approach represents a model for large-scale production that includes all significant parameters of a manufacturing process, as well as all required intermediate storages. The last two models, which will be shown in this paper, were developed as parametric, and the users in the training process can easily make tests for different types of input data.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 13713435Smooth operation of power plants is associated with periodic overhauls and maintenance. Inspection of the tubes of heat exchangers and selecting appropriate tubes for sampling is one of the most important operation of maintenance. This work is focused on applying induction heating technology for the purpose of tube sampling. The first part of the paper covers basic theoretical background on induction heating. In the second part the investigation is divided into two parts. Firstly, the application of induction heating for tube separation is experimentally tested. A significant reduction of breakage force is needed when the tube is locally heated over 500°C. Secondly, the application of induction heating for detachment of a tube from supporting wall is studied. The results show, that induction heating technology is appropriate for both case studies and presents a relevant alternative to conventionally used technologies.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 13854235Steel making plants having great diversity of several hundred different rolled profiles, bars and strips in their production program produce also various dimensions of round steel bars. For those bars the roundness is one of the the most difficult attainable geometrical parameter. The process of rolling set-up gets quite complicated and needs to be computer aided. The existing process is based on use of computer program for groove design and calculating rolling parameters, called Wicon, but it gives only rough values needed for rolling mill settings. In order to obtain the proper geometrical and kinematic settings, calibration experts still have to rely on their experiences. In the paper, the procedure of the rolling mill set-up is presented. The technology set-up of the Ø32 mm bar rolled with groove shapes was determined by Wicon. The rolling process was analysed by the FEM programme in order to verify the setting of the groove shapes. Both concepts were compared with rolled bars obtained in real production. Finally, the guidelines for further computer assisted research work were stated in order to improve the bar tolerances and stabilize the rolling process.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 13412891