Abstract: The paper presents a methodology developed by the author for reconstructing surfaces of shaping the punch which is an element of the stamping die. It describes the entire process of the punch reconstruction i.e. 3D scanning, modeling, FEM analysis and processing. This process was implemented by the stamping press cooperating with the authors. Conclusions have been formulated.
Abstract: The aim of the research was to define an appropriate design of the nozzle which could be used to cavitate microbubbles and direct the cavitating water flow on the cleaning metal surface. Three different nozzles were evaluated. SolidWorks 2011 Flow Simulation software was used for calculations. Volume of vacuum bubbles in the flowing part of the nozzle was established. The water pressure at the inlet was varied from 4 to 10 MPa. Calculations show that in all nozzle structures amount of bubbles change slightly while pressure is varied from 4 to 10 MPa, so the optimal pressure of the water flow can be considered as 4 MPa.
Abstract: The paper presents the results of numerical simulations of the alternate indirect extrusion and multiaxial compression process, performed using commercial software designed for the thermomechanical analysis of plastic working processes, Forge 2009. The paper presents selected results on the distribution of deformation in the process of alternating extrusion and multiaxial compression. Examples of modifications to the shape of the die and punch, and their effect on the kinetics of the material flow as well as the likelihood of defects of materials are provided. The results confirm that suitable modifying the shape of the die and punch enables to obtain a material with no internal defects. Iterative process, alternating squeezing and multiaxial compressive strain allows the accumulation of which results in fragmentation of the microstructure.
Abstract: The paper presents a low-speed hydraulic pump which is used in a hydraulic load unit for testing mechanical devices. The control system of the unit reduces an impact of any other hydraulic and mechanical parameters, including temperature and rotational speed, on the torque. The hydraulic load unit with the low-speed pump was used in the tests of the cycloid gearbox.
Abstract: The new generation of the tractors with the front and rear linking systems makes more perfect combined aggregates, when some of them are mounted on the front of the tractor and others on the rear of the tractor. Thus the soils can be significantly compacted by the wheels of the tractors.Gantry agriculture has great influence on the soil structure. The possibilities to minimize the interaction between the chassis and the soil compression of different types circular and shuttle gantry modules were theoretically investigated. The influence of the unevenness fields on curvature of chassis ways and to selection of the chassis types were investigated.
Abstract: The article analyses the possibilities of and demand for a combination of non-formal and formal education systems for the students studying mechatronics engineering and improving practical skills and synergistic abilities. The paper surveys the sector of Lithuanian engineering industry as well as its competitiveness and non-formal education of young specialists relevant to the sector. The publication also reviews the results of profit and demand for non-formal education projects concerning the students studying mechatronics engineering. The piece of writing provides a model and its logical scheme for improving the theoretical knowledge and practical skills of young mechatronics specialists through non-formal education.
Abstract: The paper deals with an educational model of line following robot LINA 2010. The model of the robot has been designed at the Faculty of Mechanical Engineering, Technical University of Kosice and is currently used in the educational process. The students also attend competition for the best designed algorithm for the robot, which helps with broadening skills and experience in this field of study.
Abstract: The authors of the article carried out the analysis of the teaching need for the subject of engineering change at Vilnius Gediminas Technical University. The conducted investigation was based on evaluating the situation of the engineering change process and on innovative knowledge in the field. The examination of literature sources and the results of expert evaluation pointed out a number of activities to support the engineering change process. The activities must be provided with relevant innovative knowledge. Recent engineering changes are related to product and process innovations when the new functions and purposes of product development can be, in many cases, achieved through designing mechatronic systems and introducing new materials to improve the product. Engineering change management is important for designing and producing products. For this reason, the modules of study programmes in this particular field give more knowledge and abilities for the students.
Abstract: The current situation in the growing European market, facing global competition and the world economic crisis and the pressure for minimum cost are forcing the Small and Medium Enterprises to act in order to increase their competitiveness. One possibility challenge this is to enhance the quality of the production process. This allows the production of high-quality products while keeping production costs at a reasonable and competitive level. This shall allow the companies to not only maintain the demanding market, but also contribute to their development and to build lasting relationships with customers.This article presents the results of the Q4SME project which aim was the preparation of the training courses tailored especially to meet the specific needs of production SMEs in terms to increase their competitiveness and to improve the production process quality.
Abstract: The paper describes the concept of an Advanced Virtual Laboratory for Automation and Robotics using stereoscopic 3D video transmission augmented with computer generated virtual reality elements supporting students in understanding and constructing their personal conceptual knowledge of designing and controlling robotised and automated facilities. The article presents the assumptions and analysis of a modern virtual laboratory for robotics improving the process of education and responding to the needs of a modern market.