Papers by Ľudovít Kolláth
The paper deals with the issue of separation in particular:-restaurant, hotel and kitchen waste,-... more The paper deals with the issue of separation in particular:-restaurant, hotel and kitchen waste,-biodegradable waste in the food industry (packaged and unpackaged, fresh, canned, bottled, chilled and frozen...etc.),-biodegradable waste from shops and wholesalers, including vegetables, fruit, bakery, dairy, smokehouse and other products (packaged and unpackaged in all forms),-biodegradable municipal waste from public spaces and households-mixed municipal waste, etc. A new line for wet (dust-free) mechanical separation of these wastes is also described.
The work describes the kinematic structure of production machinery. I compare the serial and para... more The work describes the kinematic structure of production machinery. I compare the serial and parallel kinematic structures, which are the main carriers of industrial robots and manipulators. I show possibilities, advantages and disadvantages of both structures, the basic distribution and kinematics motion. Parallel mechanisms are characterized by their kinematic structure presented a closed kinematic chain. The end effector mechanism is coupled to the base of more than one arm. This design provides an advantage particularly high rigidity mechanism and other related properties. The disadvantage of such a construction is limited workspace. In terms of positioning and management of this structure because of its complexity rather problematic. It is a structure that allows quick positioning of the tool with three degrees of freedom. Control system with a mechanical part is actually built on the Faculty of Mechanical Engineering. The work focuses on testing the parallel kinematic structur...
The paper deals with machines employing parallel-kinematics structures (PKS). They represent a re... more The paper deals with machines employing parallel-kinematics structures (PKS). They represent a relatively new generation of machine tools. Depending on the number of struts, the machines are referred to as hexapod or tripod machines. Such machines offer several advantages comparing to the conventional machine tools with serial kinematics, such as high flexibility, high stiffness, and high accuracy. It is very suitable for High- Speed-Machining (HSM), light machining and has received a wide interesting in manufacture industry. To achieve a desired positioning accuracy and stability, the static and dynamic properties of the machine must be searched and mathematically described. The calculation of the estimate of positioning deviation, including respective uncertainty and covariances, is much more complicated task comparing to the serial kinematics.
This paper deals with the problem of determining the size of the work area in a parallel kinemati... more This paper deals with the problem of determining the size of the work area in a parallel kinematic structure. This problem was solved for Tricept device created at the Faculty of Mechanical Engineering, Slovak University of Technology. A study which takes into account the parameter of the tricept motion was elaborated. This study deals with the problem of ambiguity of the position of reference point of the movable platform in extreme position and delimitation of the "safe work area", i.e. the area where ambiguity in the position of the reference point is impossible.
The paper deals with machines employing parallel-kinematics structures (PKS). They represent a re... more The paper deals with machines employing parallel-kinematics structures (PKS). They represent a relatively new generation of machine tools. Depending on the number of struts, the machines are referred to as hexapod or tripod machines. Such machines offer several advantages compared to conventional machine tools with serial kinematics, such as high flexibility, high stiffness, and high accuracy. They are very suitable for High Speed-Machining (HSM), light machining and have attracted a wide interest in the manufacturing industry. In order to achieve a desired positioning accuracy and stability, the static and dynamic properties of the machine must be researched and mathematically described. The calculation of the estimate of positioning deviation, including the respective uncertainty and covariances, is a much more complicated task compared to serial kinematics.
Fiatal Műszakiak Tudományos Ülésszaka, 2005
MM Science Journal
The paper deals with design and optimization of an extrusion die which consists of a die body and... more The paper deals with design and optimization of an extrusion die which consists of a die body and a set of replaceable plugs for various extrusion cross-sections. This system is primarily used for producing WPC products on the laboratory extruder EUROTECH EB30. The paper offers several designs of extrusion dies and examines their advantages as well as disadvantages. Based on this analysis, the best design is chosen and then flow simulations through a die and by FEA are done.
Acta Polytechnica
The aim of the research work was focused on a research of manipulators design using suction gripp... more The aim of the research work was focused on a research of manipulators design using suction grippers. The results of the research can be applied in the design of jigs - manipulators for handling thin sheets. The FME analysis was used in the investigation to show the course of elastic deformations and stresses in stressed areas. An experimental observation of the change in the free deflection of the workpiece from the positioning of the suction cups under gravity load by means of a laser 3D scanner was carried out for the FEM deflection detection method.
Fiatal Műszakiak Tudományos Ülésszaka
A cikk felvázolja a fahulladék brikettálására tervezett gépsorok gazdaságossági aspektusait és eg... more A cikk felvázolja a fahulladék brikettálására tervezett gépsorok gazdaságossági aspektusait és egy vázlat segítségével szemlélteti a megoldás lehetőségét. This paper deals of economical aspects of designing of machines for briquetting of waste and with attached scheme represents possibility of solution.
The paper deals with machines employing parallel-kinematics structures (PKS). They represent a re... more The paper deals with machines employing parallel-kinematics structures (PKS). They represent a relatively new generation of machine tools. Depending on the number of struts, the machines are referred to as hexapod or tripod machines. Such machines offer several advantages compared to conventional machine tools with serial kinematics, such as high flexibility, high stiffness, and high accuracy. They are very suitable for High Speed-Machining (HSM), light machining and have attracted a wide interest in the manufacturing industry. In order to achieve a desired positioning accuracy and stability, the static and dynamic properties of the machine must be researched and mathematically described. The calculation of the estimate of positioning deviation, including the respective uncertainty and covariances, is a much more complicated task compared to serial kinematics.
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Papers by Ľudovít Kolláth