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In this article the test results of roller burnishing and polishing influence on surface roughness some characteristics and corrosion resistance made of 15H steel specimen are presented. In result of the tests it was obtained that roller burnishing cannot be recommended as finishing of machine parts working in corroding medium.
Complex optimization of rotation cutting with layer partial melting of a coated coverage, was performed. The results are presented as mathematical models and allow to recommend conditions of machining.
The results of experimental investigation of critical states of thin-walled open structures with different stiffeners, subjected to constrained torsion are presented in the paper. The tests were executed on the special steel models which complied with assumptions relative to stiffeners and boundary conditions. The purpose of the investigation was in order to obtain an information about buckling form...
In the paper presented the possibilities of turbocompresor rotor runout decrease by non-conventional methods of finishing measurement rotor burnishing journal tracks. In results of the test strong decrease possibilities vere stated.
The choice of aggregate-modular (AM) industrial robots (IR) in this sense is the same as handling task contently. This task is considering as a result of comparison between necessary set of orienting movements (SOM) in-accordance with requests of technology and possible SOM AM IR that have been working. Kinds of SOM given above are determined in accordance with proposed method. Regularities of change...
Technological problems, design solution of pistons, measurement tools and devices used in the production process of the piston are presented in this paper.
This paper present the investigation results of clearance and tool wear influence on the size and shape plastic deformation area, as well as the shape of blanked part contour in the blanking process of the EP 530-50A generator sheet. Shape and size of plastic deformation area in vicinity of cutting was determined indirectly by measurement of sheet material microhardness.
The paper presents experimental and numerical analysis of stress field in neighbourhood crack front for different configuration of crack in tension plate. Photo - elastic method and numerical analysis were used for specimens made by epoxy resin material.
Magnesium MgAl8MnZn alloy specimens have been finished with bearing ball peening. Its influence on specimen surface layer and their basic properties have been investigated. Some examples of industrial applications of magnesium alloys have been described too.
For current constructions of face milling cutters equipped by super firm materials are used standard cutting schemes, which limits their usage only for finishing technological processes. The authors worked out constructions of face milling cutters witll stepped distribution of depth of cut, which lets to remove allowances of about 6-8 mm. A force analysis of processes of cutting blade's strengthening...
The original position of the computer-controlled system of a job rating teachers on its basic varieties- with usage of mathematically professing average expert estimations presented as quasimatrix are the explained. The system has a capability of self-advancing is the idle time and promotes improvement of the quality work achair.
The method of application compilation quasimatrixs of an estimation separate partitions of attended operation by the teacher of a higher school is explained. The columns describe such matrix a subsection of operation and the line-differentiate on accepted varieties. The complex matrix is instituted summation of lover case matrix partitions operation. All indispensable calculations are executed on...
Driving unit in robots serves, through the change of input energy, programmed precise movement of mechanical movement system. At the same time, the requirements on its optimization lead to the concept of its design with transformer block (transmission), ar without this block. One of the solutions without the transformer block is the usage of the principle of bio-drives (artificial muscle). The paper...
A study of susceptibility to stress corrosion cracking (SCC) of welded joints of the Ti-6AI-1,5V-6Zr alloy in sea water was made. Ways of increasing the SCC resistant properties of weldments were found. A mechanism of corrosion crack initiating has been described. The relationship between local elemental composition of weldments and SCC susceptibility is shown.
The paper discusses the problem of the significance of the design parameters of a machine tool spindle unit. A computational method has been developed that enables the significance of the design parameters of any arbitrary variant of a machine tool spindle unit to be determined. For the separation of the design parameters, statistical methods were employed, which are used in experimental studies....
The article concerns thermal resistance, strength and wear resistance improvement of a novel microcrystalline diamond composite. Investigations of properties of the material produced in Superhard Materiais Institute in Kiev are realized in the cooperation with Rzeszów University of Technology and this work contains the preliminary results of the experiments.
The contact linear displacement sensor with loop of synchronisation pllases (PLL) was worked out and examined. Correctness of working and convergence, in the range of few millimetres, between theoretical characteristic of processing and empirical one was determined. Empirical characteristic of processing is non-linear one and, in practice, only part of the characteristic with assumed uncertainty of...
The paper presents possibilities of using AutoCAD program to make virtual model on base of points get from scanning surface of parts. The received model was used to make parts with taking advantage of CAD/CAM systems and numerically controlled machine.
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