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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Rationalization of production to improve roughness of a selected surface of rectilinear hydraulic motors
 Urban, Jan ; Píška, Miroslav (referee) ; Sliwková, Petra (advisor)
In this paper, the influence of cutting parameters, machining strategies and material properties on the resulting surface roughness of a selected surface of a groove for a seal on the cover of a straight-line hydraulic motor are investigated. Based on the analysis of the results of the initial experiments of the existing production, specific measures are proposed to rationalize the manufacturing process. The effectiveness of the proposed measures is verified by further experiments carried out on real workpieces under industrial production conditions under the same manufacturing conditions. Subsequently, the results of the methods are compared with each other. The inclusion of a time delay between radial and axial feed during the finishing operation of the grooving had a very positive effect on the surface quality. The surface roughness values not only came within the prescribed tolerance but well below it. The economic evaluation shows that the rationalised production process does not have a noticeable effect on the overall cost of production and hence the results of this thesis are recommended for implementation in practice.
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Surface roughness measurement
 KEHLER, Roman
This thesis deals with surface roughness measurement of polyethylene plates before and after plasma discharge application by Hommel-Tester T2000 contact measurement device. The first section describes basic terms, units and definitions, types of devices and tools used for surface roughness measurement. The next section of thesis is focused on practical measurement of given samples and their surfaces structure evaluation.
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