Wyniki wyszukiwania - BazTech

1

Digital Shape and Geometric Dimension Analysis of Polymer Fuel Tanks

Józwik J., Dziedzic K.

Advances in Science and Technology. Research Journal

|

2021

|

Vol. 15, no 4

38--48

EN

3D optical scanning method, is employed to digital shape and geometric dimension analysis of fuel tanks. The following paper presents the application possibilities of the optical 3D measurement method for measuring and archiving dimensions of geometrically complex parts, on the example of a passenger car fuel tank in local company. Based on the conducted measurements, for a specific type and size of the population of fuel tanks, proposed model that classifies the geometric accuracy of the tanks produced in the production line. For the analysis and data processing different informatics techniques have been used. The main objective of theirs was to identify the possibility of implementing the system for automation of the measurement to the production line. The measurements were implementation at local company - a manufacturer of polymer tanks in the automotive industry. For most of the measuring points, the mean value of the measuring deviations ranged from -1 mm to +1 mm. The mean values of the standard deviations are presented for a representative deviation of the X dimension of 0.1; 5; 10; 15 and 20 mm were respectively: 0.014; 0.150; 0.172; 0.289; 0.340 mm. The dimensional shape assessment of the manufactured tanks is extremely important from the point of view of the automation of this task in the production line. The optimization of the measurement of tanks carried out in laboratory conditions was implemented on the production line. The main task of optical scanning for the assessment of dimensional conformity has not been used so far in factory. This is due not only to the cost of such systems, but also to certain limitations that have been resolved thanks to laboratory tests. The obtained results of the metrological inspection make it possible to identify significant dimensional and shape deviations of automatically manufactured tanks. The proposed use of artificial neural networks allows the production with a high quality of tanks accuracy with the minimum the number of scanned tanks in the production line. The paper also presents the possibilities of the computer software to analyze the deviations of geometrically very complex parts.

2

Monitoring of the Noise Emitted by Machine Tools in Industrial Conditions

Józwik J., Wac-Włodarczyk A., Michałowska J., Kłoczko M.

Journal of Ecological Engineering

|

2018

|

Vol. 19, nr 1

83--93

EN

The paper presents an analysis of noise emitted by selected machine tools in a production hall (under industrial conditions). Noise monitoring is a fundamental task for maintaining workplaces which are safe and healthy. This paper presents the noise measurements obtained for several machine tools, performed in accordance with the PN ISO 230–5:2002 standard. The identification of noise sources and levels was conducted by means of the UNIT 352 measurement system for DMU 50, BGO-CNC/RV/R, FU 251, FW 801, FWC 25/H. Detection of noise sources in the tested machine tools allows to maintain safety of workers and effective means of noise reduction, which are highly significant from the perspective of minimising noise at various workstations. The method of performing noise measurements at workstations using specific machines is normalised, so that the results of such measurements for different machines could be compared. The test results were presented in the form of diagrams and tables. The results of the tests are concluded by a detailed recommendation for the CNC machine tool operators to use hearing protection when at work. The results showed that the level of noise at the operator’s workstation significantly exceeds the standard at certain machining parameters.

3

Identyfikacja wad powłok napawanych regeneracyjnie z zastosowaniem tomografii rentgenowskiej

Paszeczko M., Józwik J., Dziedzic K., Bereżanśkyj T.

Przegląd Spawalnictwa

|

2017

|

R. 89, nr 12

12--16

4

Odporność warstw metalicznych stosowanych w systemach tekstronicznych na deformacje mechaniczne

Korzeniewska E., Józwik J., Zawiślak R., Krawczyk A., Michałowska J.

Przegląd Elektrotechniczny

|

2017

|

R. 93, nr 12

111--114

PL

W artykule zaprezentowano wyniki badań odporności warstw metalicznych Ag wytworzonych w procesie fizycznego osadzania próżniowego na deformacje mechaniczne. Warstwy wytworzone zostały na podłożu kompozytowym Cordura. Badano oporność warstw przewodzących na cykliczne naprężenia rozciągające, jako jedne z podstawowych odkształceń występujących w trakcie użytkowania tekstyliów z zaimplementowanymi systemami tekstronicznymi. Wyniki pomiarów wskazują na wysoką wytrzymałość mechaniczną takich warstw.

EN

In the article the authors present the results of tests concerning the resistance of Ag metallic layers produced in the process of physical vacuum deposition to mechanical deformation. The layers were made on Cordura composite substrate. Resistance of conductive layers to cyclic tensile stresses was investigated as one of the major deformations which appear during usage of textiles with implemented textronic systems. The results of the measurements indicate the high mechanical strength of such achieved layers.

5

Structure and construction assessment of the surface layer of hardfaced coating after friction

Dziedzic K., Pashechko M., Barszcz M., Józwik J.

Advances in Science and Technology. Research Journal

|

2017

|

Vol. 11, no 3

253--260

EN

The paper presents an analysis of the surface layer of Fe-Mn-C-B-Si-Ni-Cr alloy coating after friction with C45 steel. The coatings were obtained by arc welding (GMA). Flux-cored wires were used as a welding material. The flux-cored wires had a diameter of 2.4 mm. The tribological assessment was performed with the Amsler tribotester under dry friction conditions at unit pressures 10 MPa. The use of XPS spectroscopy allowed deep profile analysis of the surface layer. Based on the obtained results developed model of the surface layer for friction couple, hardfaced coating obtained from Fe-Mn-C-B-Si-Ni-Cr alloy – C45 steel. It was observed that the operational surface layer (OSL) of hardfaced coatings contained oxides (B2O3, SiO2, NiO, Cr2O3, FeO, Fe3O4, Fe2O3), carbides (Fe3C, Cr7C3) and borides (FeB, Fe2B).

6

Shearing strength test of orthopaedic titanium alloy screw produced in the process of 3D printing technology

Ruszniak P., Józwik J., Ostrowski D., Dziedzic K.

Advances in Science and Technology. Research Journal

|

2017

|

Vol. 11, no 1

128--137

EN

The aim of the present article is the assessment of technical shear resistance (technological shear) of orthopedic screw made of titanium alloy Ti6Al4V, produced using incremental technology in the process of 3D printing process. The first part of the work presents incremental techniques in production engineering. The second part of the present work contains a specification of the 3D printing process of samples as well as the description of the used material. The fundamental part of the article is composed out of endurance tests for orthopaedic screws as well as the analysis of the obtained results and conclusions. The method of incremental production SLM using SLM 280HL metal printer was used during the technological process. The resistance tests were performed using ZWICK/ROELL Z150 machines. Identical endurance trials were performed for monolithic bars made of titanium alloys (of bar core size ) made on a wire electric discharge machine Sodick SL600Q for comparative purposes. The obtained test results enabled comparative assessment of the value of shear resistance Rt in the conditions of technological shear. According to the performed tests, the shear resistance Rt of orthopaedic screws is nearly 33% lower than of monolithic bars of the same core size.

7

Mikrotomograficzna identyfikacja wad powłok napawanych

Józwik J., Dziedzic K., Wierzba W.

Przegląd Spawalnictwa

|

2016

|

R. 88, nr 7

34--37

PL

W artykule przedstawiono wykorzystanie metody tomografii komputerowej CT (ang. Computed Tomography) do oceny powłok napawanych. Do otrzymania napoin wykorzystano metodę napawania elektrodą nietopliwą w osłonie gazowej TIG (ang. tungsten inert gas) z wykorzystaniem stopowych drutów do napawania powłok odpornych na zużycie o nazwach handlowych: EL-500 HB, EL-600 HB, EL-650 HB. Scharakteryzowano typowe wady wykonanych napoin oraz wpływ rodzaju drutu na koncentrację wad. Najmniejszy średni procentowy udział wad w stosunku do powierzchni całkowitej otrzymano dla napoiny EL- 600 HB, który wyniósł 1,5%.

EN

The paper presents the use of Computed Tomography (CT) for the evaluation of padding coatings. The method used to obtain a padding weld is pad welding with tungsten inert gas (TIG) using alloy wires for pad welding of wear resistant layers under the trade names: EL-500 HB, EL-600 HB, EL-650 HB. It characterizes the typical defects of obtained padding welds and the impact of the type of wire on the concentration of defects. The smallest average percentage of defects in relation to the overall surface is observed for the padding weld EL-600 HB, which amounts to 1.5%.

8

The influence of the conditions of emulsion mist formation on the surface roughness of AISI 1045 steel after finish turning

Feldshtein E., Józwik J., Legutko S.

Advances in Science and Technology. Research Journal

|

2016

|

Vol. 10, nr 30

144--149

EN

The processes of machining have vital influence on the operating properties of machine parts because they ensure the formation of the required geometrical structure of the working surfaces and the condition of the top layer. In this paper the influence of emulsion mist parameters on Ra, Rz and RSm surface roughness parameters is described when finishing the turning of C45 carbon steel. It was found that cutting parameters have considerably greater influence on roughness parameters in comparison with emulsion mist conditions. When increasing cutting speed from 100 to 300 m/min Ra and Rz values decrease nearly 2 times, but RSm value does not depend on speed. When increasing feed rate from 0.1 to 0.2 mm/rev Ra, Rz and RSm values increase more than twice. Changes of emulsion mass flow and compressed air flow affect roughness parameters reach 9–15% of maximum. It was shown that Parameter Space Investigation method can be used efficiently for quick analysis of tested parameters and optimization of their values.

9

Research on tribological properties of dental composite materials

Dziedzic K., Zubrzycka-Wróbel J., Józwik J., Barszcz M., Siwak P., Chałas R.

Advances in Science and Technology. Research Journal

|

2016

|

Vol. 10, nr 32

144--149

EN

Dental practice today used a lot of different materials. This paper evaluates tribological and mechanical properties of two dental materials CeramX and I-Light. Tribological analysisad of samples was conducted at temperature 37°C and in the environment of artificial saliva. The wear rate was evaluated with a ball-on-disc tribotester, in accordance to ASTM G-133 norm. The counterbodies were 6-mm-in-diameter Al2 O3 steel balls. The load of 2, 10 and 20 N was applied. The tests were conducted at 0.15 m/s sliding velocity over a sliding stroke of 1000 m. The changes in the value of the following parameters were measured during the trials: friction coefficient, friction force, temperature and wear depth. After completing the tribological tests the surface of samples was carried out.

10

Normative measurements of noise at CNC machines work stations

Mika D., Józwik J.

Advances in Science and Technology. Research Journal

|

2016

|

Vol. 10, nr 30

138--143

EN

Minimisation of noise at a workstation is among fundamental tasks for maintaining safety at work, both in terms of health (the auditory system in particular) as well as work comfort. Thus, it is very important to systematically monitor noise levels by carrying out reliable measurements at a workstation. The method of performing noise measurements at workstations of specific machines is normalised so the results of such measurements for different machines is comparable. This paper presents noise measurements for DMC 635 numerically controlled milling machine, performed in accordance with PN ISO 230-5:2002 norm. The results showed that the level of noise at the operator’s workstation significantly exceeds the norm at certain machining parameters. The results of tests are concluded as detailed recommendation for the CNC machine tool operator to use hearing protection when at work.

11

Industrial robot repeatability testing with high speed camera Phantom v2511

Józwik J., Ostrowski D., Jarosz P., Mika D.

Advances in Science and Technology. Research Journal

|

2016

|

Vol. 10, nr 32

86--93

EN

Apart from accuracy, one of the parameters describing industrial robots is positioning accuracy. The parameter in question, which is the subject of this paper, is often the decisive factor determining whether to apply a given robot to perform certain tasks or not. Articulated robots are predominantly used in such processes as: spot welding, transport of materials and other welding applications, where high positioning repeatability is required. It is therefore essential to recognise the parameter in question and to control it throughout the operation of the robot. This paper presents methodology for robot positioning accuracy measurements based on vision technique. The measurements were conducted with Phantom v2511 high-speed camera and TEMA Motion software, for motion analysis. The object of the measurements was a 6-axis Yaskawa Motoman HP20F industrial robot. The results of measurements obtained in tests provided data for the calculation of positioning accuracy of the robot, which was then juxtaposed against robot specifications. Also analysed was the impact of the direction of displacement on the value of attained pose errors. Test results are given in a graphic form.

12

Identification and monitoring of noise sources of CNC machine tools by acoustic holography methods

Józwik J.

Advances in Science and Technology. Research Journal

|

2016

|

Vol. 10, nr 30

127--137

EN

The paper presents the analysis of sound field emitted by selected CNC machine tools. The identification of noise sources and level was measured by acoustic holography for the 3-axis DMC 635eco machine tool and the 5-axis vertical machining centre DMU 65 monoBlock. The acoustic holography method allows precise identification and measurement of noise sources at different bandwidths of frequency. Detection of noise sources in tested objects allows diagnosis of their technical condition, as well as choice of effective means of noise reduction, which is highly significant from the perspective of minimising noise at the CNC machine operator workstation. Test results were presented as acoustic maps in various frequency ranges. Noise sources of the machine tool itself were identified, as well as the range of noise influence and the most frequent places of reflections and their span. The results of measurements were presented in figures and diagrams.

13

Synergia nauki i przemysłu 2015 w PWSZ w Chełmie

Józwik J.

Świat Obrabiarek i Narzędzi

|

2015

|

R. 10, nr 10-12

3--9

14

Laboratorium Badań Środowiskowych - najnowocześniejsze laboratorium w Centrum Studiów Inżynierskich Państwowej Wyższej Szkoły Zawodowej w Chełmie

Mika D., Józwik J.

Świat Obrabiarek i Narzędzi

|

2015

|

R. 10, nr 1-2

28--34

15

Parametryzacja technologicznych programów obróbkowych w systemie HEIDENHAIN TNC620

Semotiuk L., Józwik J., Kuric I., Leleń M.

Mechanik

|

2015

|

R. 88, nr 3CD

178--186

PL

Niniejszy artykuł prezentuje sposoby parametryzacji programów obróbkowych w systemie HEIDENHAIN TNC620. Pokazuje 3 przypadku parametryzacji. Parametryzację programu sterującego w oparciu o geometrię przedmiotu obrabianego, parametryzację podczas obróbki przedmiotów o budowie segmentowej oraz parametryzację wykorzystującą funkcje warunkowe oraz zależności matematyczne.

EN

This article presents methods for parameterization of machining programs in the HEIDENHAIN TNC620 system. In the paper three methods parametrisation are present: parameterization of geometric features, parameterization of the modular objects and parameterization using mathematical and conditional function.

16

Linear positioning errors of 3-axis machine tool

Józwik J., Mazurek P., Wieczorek M., Czwarnowski M

Applied Computer Science

|

2015

|

Vol. 11, no 2

86--94

EN

This paper presents results of 3-axis CNC machine tool diagnostics performed with XL-80 laser interferometer and XC-80 environmental compensation unit, including pressure, humidity and temperature sensors. Furthermore, the paper includes the methodology and results of conducted measurements of linear positioning errors, which supplied data for further analysis. The conclusion section presents important results of conducted experiments. Measurement results were presented in figures, charts and tables.

17

Diagnostics of workpiece surface condition based on cutting tool vibrations during machining

Józwik J., Mika D.

Advances in Science and Technology. Research Journal

|

2015

|

Vol. 9, nr 26

57--65

EN

The paper presents functional relationships between surface geometry parameters, feedrate and vibrations level in the radial direction of the workpiece. Time characteristics of the acceleration of cutting tool vibration registered during C45 steel and stainless steel machining for separate axes (X, Y, Z) were presented as a function of feedrate f. During the tests surface geometric accuracy assessment was performed and 3D surface roughness parameters were determined. The Sz parameter was selected for the analysis, which was then collated with RMS vibration acceleration and feedrate f. The Sz parameter indirectly provides information on peak to valley height and is characterised by high generalising potential i.e. it is highly correlated to other surface and volume parameters of surface roughness. Test results presented in this paper may constitute a valuable source of information considering the influence of vibrations on geometric accuracy of elements for engineers designing technological processes.

18

Diagnostic of CNC lathe with QC 20 ballbar system

Józwik J., Semotiuk L., Kuric I.

Advances in Science and Technology. Research Journal

|

2015

|

Vol. 9, nr 28

96--102

EN

This paper presents the evaluation of the influence of the feedmotion speed on the value of selected geometric errors of CNC lathe CTX 310 eco by DMG, indentified by QC 20 Ballbar system. Diagnostically evaluated were: the deviation of the axis squareness, reversal spike, and backlash. These errors determine the forming of the dimensional and shape accuracy of a machine tool. The article discusses the process of the CNC diagnostic test, the diagnostic evaluation and formulates guidelines on further CNC operation. The results of measurements were presented in tables and diagrams.

19

Angular positioning accuracy of rotary table and repeatability of five-axis machining centre dmu 65 monoblock

Józwik J., Czwarnowski M

Advances in Science and Technology. Research Journal

|

2015

|

Vol. 9, nr 28

89--95

EN

The study aims to evaluate angular positioning accuracy and repeatability of DMU 65 monoBLOCK numerically controlled machine tool. The measurements were carried out with XL-80 Laser Interferometer with XR20-W attachment. The measurements were conducted according to the standard PN-ISO230-2. Test methodology and measurement results analysis are presented in a form of figures and tables. The final part presents conclusions from the analysis.

20

Analysis of the surface profile and its material share during the grinding inconel 718 alloy

Novák M., Náprstková N, Józwik J.

Advances in Science and Technology. Research Journal

|

2015

|

Vol. 9, nr 26

41--48

EN

Grinding is still an important method for surface finishing. At FPTM JEPU research, which deals with this issue is conducted. Experiments are carried out with grinding various materials under different conditions and then selected components of the surface integrity are evaluated. They include roughness Ra, Rm and Rz, Material ratio curve (Abbott Firestone curve) and also the obtained roundness. This article deals with grinding nickel Inconel 718 alloy, when selected cutting grinding conditions were used and subsequently the surface profile and the material ratio curve were measured and evaluated.