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Use of High-pressure Cooling System for Long-turn Machines
Kinc, Jiří ; Kouřil, Karel (referee) ; Sedlák, Josef (advisor)
The thesis describe high-pressure cooling system and present experiment, when is using this cooling technology for turning cylindrical workpiece to long-turn machines. Workpiece manufactured using high-pressure cooling system is compares with Workpiece manufactured using low-pressure cooling system. Results are analyzed, evaluated and plotted in a single graphical relationships. The thesis is completed the analysis, discussion and recommendations regarding the using of high-pressure cooling.
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Resistance of Sintered Carbides against Thermal Crack Spreading
Smrž, Peter ; Plíšek, Jiří (referee) ; Kouřil, Karel (advisor)
This thesis aims to compare the relationship of physical-mechanical properties of tool materials made of WC-Co sintered carbides with their resistance to initiation and propagation of thermal cracks. The paper presents the results of testing the basic physical-mechanical properties of the three samples sintered carbides with different percentage of Co binder. Next, this thesis describes the progress and results of quench experiment and cutting tests using, which was described resistance of the tested samples to thermal and mechanical shock, depending on the values of physical-mechanical properties.
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Integrity surface at reaming with modern reaming head MT3
Havlík, Luboš ; Plíšek, Jiří (referee) ; Kouřil, Karel (advisor)
The Masters thesis is focused on surface integrity at reaming with high productive reaming head MT3 made by HAM-FINAL. Theoretical part of thesis aims at analyse of the most frequently evalueted surface integrity parametrs and its possible influence on functional performance of machined components. Next theoretical parts are aimed at reaming process, reaming tools characteristics, detailed reaming head MT3 characteristics and its aplication in company Sauer Danfoss. The aim of experimetal part of thesis is surface integrity of holes reamed MT3 during its tool life evalation.
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Effect of size impact on surface integrity while reaming with modern reaming head MT3
Rybařík, Jaroslav ; Kouřil, Karel (referee) ; Slaný, Martin (advisor)
The aim of this thesis is to design, implement and evaluate an experiment that verifies the influence the size effect on selected parameters of the surface integrity. For the experiment were used highly productive reaming head MT3 made by HAM-FINAL. Evaluation of the surface integrity was done in terms of the characteristics of the surface roughness, geometric tolerances and changes in microstructure. Furthermore, the influence of the depth of chips evaluated for changes in the feed force, cutting torque and changes in specific cutting energy. The theoretical part deals with the description of the size effect, characteristic reaming, surface integrity, preparation of material and identification of highly productive MT3 reaming head.
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A new production of the shaped shaft "Hohlwelle".
Kundrát, Vladimír ; Kouřil, Karel (referee) ; Píška, Miroslav (advisor)
Diplomová práca je zameraná na riešenie aktuálneho a akutného problému výroby tvarovej hriadele “Hohlwelle” vo firme Vekastool. Tri návrhy riešenia boli sústredené na dokončovaciu operáciu diery 30 H7, z ktorých dva boli priamo odtestované vo firme. Jedna z nich bola návrh a realizácia nového vyvrtávacieho nástroja firmou Ham-Final , ktorá priniesla zníženie nákladov o dve tretiny.
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The Study of Productions Operation Management
Petřek, Martin ; Kouřil, Karel (referee) ; Jurová, Marie (advisor)
The thesis dwells about methodics of processing an order in the company: Hardening shop Frydrych s.r.o. while respecting all the demands on the technological process of thermal and thermo-chemical manipulation as annealing, tempering and cementing. On the bases of the analyse and documental procedures the thesis is unraveling a concept for elimination of absences in the sphere of processing the order also as booking, invoicing and evaluating.
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Reamers with cermet cutting edge and PVD coating
Technik, Radim ; Humár, Anton (referee) ; Kouřil, Karel (advisor)
The Master’s thesis is focused on reaming technology using PVD coated reamers with cermet cutting edge. This work point out a historical evolution of reaming technology as well as recent requirements to the quality of produced surfaces. Reamers characteristic, splitting, mechanical designs, cutting tool geometry as well as the assumption of a reamer potential evolution are presented. Application of cermet tool material and PVD coatings to reaming tools is considered. The work contains a review of present statement at reamer market including cermet reamers and provided single cells (elements) of the Tool Management. The experimental part of the work is focused on product manufacture qualities verification of the changeable PVD coated reamer head made by HAM-FINAL ltd. Economic analysis in case of investment to the reamer purchase is demonstrated on the example of the practical application of the reamer.
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