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2 2018

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The effect of alternative cutter paths on flatness deviations in the face milling of aluminum plate parts

Dobrzynski M., Chuchala D., Orlowski K. A.

Journal of Machine Engineering

2018

Vol. 18, No. 1

80--87

In this paper the relationships between the alternative machining paths and flatness deviations of the aluminum plate part, were presented. The flatness tolerance of the main surface of the plate part has crucial meaning due to the assembly requirement of piezoelectric elements on the radiator. The aluminum bodies under investigation are the base part of the radiators with crimped feathers for the train industry. The surface of the aluminum plate part was milled using three different milling strategies: along of longer or shorter side of workpiece and at an angle of 45°. The aluminum bodies were machined on milling centre ecoMILL 70 DMG MORI. The flatness deviation measurements were carried out on the Coordinated Measuring Machine Altera 7.5.5 Nikon Metrology NV. These measurements were made during the manufacturing process of the radiator, namely after machining, however, before the process crimping of feathers. The results that were obtained enables the validation of assumed milling path strategies in connection of the subsequent machining and assembly processes.

The methodology for determining of the value of cutting power for cross cuttingon the optimizing sawing machine

Chuchala D., Orlowski K., Dudek P.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2018

No. 103

106--113

In the article the methodology of forecasting the energy effects of the crosscutting process using the classical method, which takes into account the specific cutting resistance, is presented. The values of cutting power for the cross-cutting process of two types of wood (softwood and hardwood) were forecasted for the optimizing sawing machine with using presented methodology.The cross-cutting process with high values of feed speed was analyzed. The presented methodology allowed us to determine dimensions of the cut workpieces limited by the applied electric motor for both soft and hard wood.

W artykule zaprezentowano metodologię prognozowania efektów energetycznych procesu poprzecznego przecinania drewna przy zastosowaniu metody klasycznej, która uwzględnia właściwy opór skrawania. Z wykorzystaniem prezentowanej metodyki zaprognozowano wartości mocy skrawania dla procesu przecinania poprzecznego dwóch typów drewna (drewno miękkie oraz drewno twarde) na optymalizerce. Analizy procesu poprzecznego przecinania drewna zostały przeprowadzone dla wysokich wartości prędkości posuwu. Zastosowana metodologia pozwoliła na określenie granicznych przekrojów przecinanego drewna dla zastosowanego silnika dla obydwu rodzajów przecinanego surowca, drewno twarde i miękkie.