The investigation of the parameters in screw surfaces whirling process is presented. The equation of the trajectory of relative movement of the workpiece and the cutter in parametric form taking into account the movement of the whirling ring along the workpiece is obtained. Appropriate graphs are plotted, which allow to make the conclusion that increasing the rotational speed of the whirling ring results the decrease in the thickness of the metal layer, which is cut during one period of contact between the workpiece and the cutter. It is also show on the graphs that the ratio between the rotational speeds of the whirling ring and the workpiece is decisive. The greater this ratio, the smaller the thickness of the cut layer. The obtained equations make it possible, using the appropriate application software, to determine and predict the shape and thickness of the material cut layers in the cylindrical workpiece by each cutter in whirling ring based on plotted graphs, visually observe the change of trajectory movement when changing cutting conditions and machined surface parameters.
The article defines regularities of the change of the angle parameter of the cargo for the case of slow-moving transport and steady motion for horizontal and hollow inclined conveyors with a rotating casing. This allows you to select the rotational speed of the casing in accordance with the conditions of transportation and the characteristics of the bulk cargo, ensuring its zero or minimum angular lift with a corresponding increase in the transport efficiency. It is established that the smaller the angular parameter of the cargo, the greater the efficiency of transportation.
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