Temat: cBN - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of surface roughness on bearing steel parts after cutting, superfinishing and burnishing operations
Autorzy:: Neslusan, M.
Grzesik, W.
Żak, K.
Powiązania:: https://bibliotekanauki.pl/articles/99566.pdf
Data publikacji:: 2012
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: hard turning
CBN tool burnishing
superfinishing
surface roughness
Opis:: The different technological operation can form the variety of surface with the different functionality. In this paper the surface texture produced by hard turning of a quenched 100Cr6 steel of 62-64 HRC hardness using mixed ceramic (MC) tools and subsequent superfinishing and multipass burnishing operations is characterized by means of a number of roughness parameters. Both conventional and wiper MC cutting tool inserts were employed. The main objective of this study is to improve service properties of the turned surfaces of bearing parts by additional removal and non-removal treatments in order to obtain smoother surfaces with lower surface roughness and better bearing characteristics.
Źródło:: Journal of Machine Engineering; 2012, 12, 1; 111-118
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Energy-based characterization of precision hard machining using partially worn CBN cutting tools
Autorzy:: Grzesik, Wit
Denkena, Berend
Zak, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/100133.pdf
Data publikacji:: 2019
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: hard machining
CBN tool
tool wear
specific energy
Opis:: This paper highlights the performance of precision hard turning with CBN cutting tools from energy point-of-view with additional tool wear effect. For this purpose several wear tests were performed during which the tool nose wear VB_C and the corresponding changes of component forces F_c, F_f and F_p were continuously measured. Based on the measured forces and geometrical characteristic of the uncut layer, specific cutting and ploughing energy were determined for several combinations of cutting parameters. Consequently, changes of energy consumption resulting from tool wear evolution for variable feed rate, depth of cut and tool nose radius were presented.
Źródło:: Journal of Machine Engineering; 2019, 19, 2; 54-62
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Surface integrity of hard turned parts modified by ball burnishing
Autorzy:: Grzesik, W.
Żak, K.
Prażmowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/99946.pdf
Data publikacji:: 2012
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: hard turning
CBN tool
burnishing
surface roughness
surface integrity
Opis:: The purpose of this research is to test the applicability of ball burnishing for improving surface integrity produced in hard machining on parts made of high-strength, low alloy 41Cr4 steel with hardness of about 57 HRC. Machined surfaces were characterized using 2D and 3D scanning techniques. Moreover, the distribution of microhardness beneath the surface was determined and the microstucture of the sublayer was examined using SEM/EDS technique. This investigation confirms that ball burnishing allows producing surfaces with acceptable surface roughness and better service properties. The main conclusion is that this sequential technology can partly eliminate grinding operations when hard machining is not enough to produce the desired surface integrity.
Źródło:: Journal of Machine Engineering; 2012, 12, 1; 18-27
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The effects of process parameters on spindle power consumption in abrasive machining of CoCr alloy
Autorzy:: Brazel, E.
Hanley, R.
O'Donell, G. E.
Powiązania:: https://bibliotekanauki.pl/articles/100023.pdf
Data publikacji:: 2011
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: power monitoring
abrasive machining
grinding
taguchi
wheel wear
CBN
Opis:: The production environment requires seamless integration, efficiency and robustness of process monitoring solutions. This research investigates data acquisition on the machine tool through the monitoring of NC kernel data. This approach provides many advantages, particularly in an industrial setting where it may be impractical to install additional sensors for process monitoring. The process investigated is abrasive machining of Cobalt Chrome alloy. Cobalt Chrome alloys are extensively used in the biomedical industry as both femoral and tibial components of prosthetic joints. Abrasive machining or grinding is widely employed as the main method for material removal for these components. Understanding the influence of key variables in such a process is necessary before optimization can be achieved. Significant information can be obtained by utilizing power consumption during machining as a process metric. Power consumption of a spindle during an abrasive machining process of Cobalt Chrome alloy is monitored under various conditions through a machine-NC-based application. The effects of changes in feed rate, wheel speed, depth of cut and tool condition are investigated here through Taguchi experimental design. Experimental results are presented with significant machining variables identified.
Źródło:: Journal of Machine Engineering; 2011, 11, 4; 59-69
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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