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Welding clamping device for the robot cell
Doležel, Jakub ; Daněk, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
This thesis deals with the construction of the welding clamping device for the robot cell. It is divided into two parts – the theoretical part describes welding of aluminium, MIG and TIG methods, welding robots and manipulators. The goal of the thesis is to design and construct the welding clamping device for the robot cell. In the last part of the thesis the return on investment into production of welding clamping device is evaluated.
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Welding robotized workplaces with emphasis on welding aggregates
Lukšíček, David ; Štěpánek, Vojtěch (referee) ; Knoflíček, Radek (advisor)
The purpose of this bachelor’s thesis is to mention basics and principles utilized in ro-botic welding. Beginning of the thesis is dedicated to introduction of automation androbotization , followed by short definition of welding and it’s development. Main partsof industrial robot are described in following chapters. Crucial stage of the thesis is tolist usual technologies used by robotic welding, to define robotized welding workplace anddescription of it’s essential components. The conclusion of the thesis contains research ofactual welding supplies and wire feeders, including relevant parameters comparison
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Materials change of parts for harvester chain production
Houdek, Radim ; Kubíček, Jaroslav (referee) ; Sigmund, Marian (advisor)
The work is focused on the track element, namely the replacement of the crossbar material from steel 27MnCrB5-2 to steel 30MnB5 from which the other parts of the cell, the cubes, and the bar are made and welded by the GMAW method. Changing the material and omitting the preheating phase would reduce the production time of the cell by approximately half the time. The theoretical preheating temperature calculated according to the relevant standard for both steels exceeded 200 ° C. Test specimens imitating the weld between the crossbar and the cube were welded on which a qualitative evaluation was performed. These were weldments of 30MnB5 steel with preheating (sample 10), 30MnB5 steel without preheating (sample 11) and 27MnCrB5-2 steel with preheating (sample 9). In terms of macrostructure, non-penetrations were found on all samples. Martensitic structure was found in all areas by microstructural observation. When measuring the hardness according to the Vickers method, approximately the same hardness profile was obtained in all weld areas of samples 10 and 11. The highest value reached 450 HV1 and exceeds the maximum hardness recommended by the standard. Due to very similar test results for 30MnB5 steel weldments with and without preheating, it is possible not to perform preheating. However, the results may be skewed by the relatively small size of the test specimens. For a reliable evaluation and final decision, it is necessary to perform tests on a real crossbar after complete production.
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Welding robotized workplaces with emphasis on peripheral devices
Šperl, Vojtěch ; Kočiš, Petr (referee) ; Knoflíček, Radek (advisor)
This bachelor thesis focuses on a robotized department of welding technology. The paper is divided into four parts. The first part deals with classification and the basic division of robots. The second one introduces the current deployment of robots in different industrial branches. The penultimate part is dedicated to the robotic welding. It talks about different sectors of robotic workplaces for welding and describes the peripherals that are being used today. In the conclusion, the thesis analyses the pros and cons of robotized workplaces and also discusses example workplaces and components that are propitious for robotized welding.
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Robotic welding of hliníkových slitin
Pekárek, Mojmír ; Kočiš, Petr (referee) ; Vetiška, Jan (advisor)
This bachelor's thesis investigates robotic welding of aluminium alloys. It is divided into for parts, which are a summary of the findings of this problematic. The first part is focused on the robotics and the main distribution of industrial manipulators. The next part investigates about three possibilities of aluminium alloys welding at which two of them are focused on arch welding and the last one on the laser welding. In the third part is illustratively demonstrated the knowledge from previous parts on three various real cases to which is added also superstructure about process modification possibilities. At the end of the thesis is processed case study, which brings application of theoretic information in practice.
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Design of a Robotic Cell for Weding Application
Rolinc, Lukáš ; Kubela, Tomáš (referee) ; Pochylý, Aleš (advisor)
The diploma thesis deals with the design of a workplace with robots designed for spot welding of wire reinforcement of the car seat. After analyzing and description of the given task, the workplace concept is chosen based on the input parameters. Subsequently, sub-systems of the production cell are designed and selected for this concept. For example the design of clamping fixtures, rotary table, input and output storage magazines or the selection of welding guns and robots are solved. The workplace is designed to ensure operator safety and protection. The production cycle of the designed workplace is simulated in Siemens Process Simulate to verify functionality and required productivity of the production line. Technical and economic evaluation of the proposed solution is also included in this diploma thesis.
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Robotic welding of grinder frame
Doležel, Jakub ; Šknouřilová, Eva (referee) ; Kubíček, Jaroslav (advisor)
This thesis deals with robotic welding of grinder frame. It divided into two parts; the theoretical part described the method of welding MIG/MAG and welding robot and manipulators. The aim of this bachelor thesis is to design robotic workplace and construct welding jig. At the end was evaluated the return on investment in new equipment.
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Manufacturing of Welded Components
Podsedník, Jaroslav ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
This work describes changes related to the transition from manual welding to robot welding selected component within the product range of the company, in which the author works. The aim was to determine the time that you return investments in new technology and what will be savings for the planned production volume. Both points were met.
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Feasibility study of welding for stainless part „ guide rail"
Vaverka, Jiří ; Mrňa, Libor (referee) ; Sigmund, Marian (advisor)
Robotization of industry is very important in these days. It is possible to replace human workers with robots and because of that make manufacturing faster. This master’s thesis includes feasibility study of robotic welding for stainless steel part guide rail. Quality of robotic welding was evaluated on testing pieces. Robotic welding was 88,5 % faster than current welding method. Costs of manufacture of one piece were 40 % cut.
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Welding of aluminum alloys with using SKS welding equipment
Šaloun, Jan ; Slováček, Marek (referee) ; Sigmund, Marian (advisor)
This thesis focuses on robotic MIG welding of aluminum alloys using welding processes from SKS Welding. The main task was to fine-tune the welding process to produce a weldment composed of profiles made of EN AW-6061 T6 alloy with a complicated cross-section connected by two fillet welds. Due to the limited number of profiles reserved for debugging, the welding process behavior was first tested on filled and overlap joints of 3 and 5 mm thick sheets made of EN AW-5754 H22 alloy with similar weldability to the alloy of the profiles. Both alloys could be welded using Argon 4.6 shielding gas and AlMg5 filler wire with a diameter of 1.2 mm. Fine-tuned KF-Pulse DP welding processes of sheets were used to initially set the welding parameters for the profiles. Variables were then gradually adjusted until acceptable visual and internal quality verified by metallographic cuts at the desired locations was achieved. A major challenge was to achieve the necessary penetration in areas where there were ribs. This requirement was achieved through a combination of different welding speeds, current values, and wire feed rates. Pores were reduced using the special Dual Pulse function.
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