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Obrotowy przyrząd podziałowy o podziale dyskretnym

Netter K., Gubański M.

Postępy Nauki i Techniki

2011

nr 6

58-65

W pracy przedstawiono konstrukcję obrotowego przyrządu podziałowego o podziale dyskretnym i napędzie ręcznym. Założeniem podstawowym było to, iż pozycjonowanie ma następować na zasadzie wzajemnego zazębiania się dwóch kół zębatych o uzębieniu czołowym Hirth’a. Opisano wiele wariantów rozwiązań poszczególnych elementów składowych tj. korpus, sprzęgła, łożyskowania itp., dokonano ich porównania, oraz opracowano szczegółowo jedno rozwiązanie.

In this thesis has been presented design of the construction of rotary indexing fixture with discreet division and manual drive. The main foundation were that, the positioning has to be solved as gearing two cog wheels with Hirth’s coupling. Here were described many solutions of main components e.g. body, clutching, bearing, etc. Also the comparison were made in this paper. Finally one solution were selected and developed in details.

Charge relaxation on surfaces of polymeric insulating materials for outdoor applications.

Sjostedt H., Montano R., Serdyuk Y., Gubański M.

Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje

2007

Vol. 46, nr 19

17-20

This paper presents studies on spatial and temporal distributions of surface charge on samples of Ethylene Propylene Diene Monomer (EPDM) and Silicon Rubber (SIR). The charge was deposited from a positive impulse corona source at 1 mm above the polymeric surfaces. During the experiments, the number of pulses and their voltage level were varied. It was observed that the spread of the charge over the surface of the samples as well as its magnitude were both increasing with increasing number of impulses applied. EPDM accumulated charge easier and had a longer relaxation time than SIR. A common feature frequently observed in both cases was that the resulting charge distributions had a saddle-like pattern. Performed computer simulations showed that this feature can be attributed to peculiarities of the corona charging proc the considered system, which took place in form of a burst corona, and the dynamics of the deposited charges could be related to burst corona pulses.