Simulation of the Instant Supply in Gear Hydraulic Machines

Abstract

The article proposes a new technique for estimating the instantaneous supply in gear hydraulic machines. It takes into account the peculiarity of the movement of the radius connecting the centers of rotation of the gears with the point of engagement. The dependence of the angular velocity of rotation and the length of the radius on the position of the engagement point due to slipping of the working profiles of the gear teeth are determined. Estimation of the degree of non-uniformity of the supply, in accordance with the obtained model, differs significantly from the traditional ideas about the pulsation of the instantaneous supply in gear hydraulic machines.

Evaluation of the Quality Parameters of the Surface Layer of Parts After Machining with Plasma Heating

“…The state of the surface layer material is characterized by its strain hardening, microstructure, magnitude and sign of residual stresses and the depth of their occurrence [1,5,16,19,27,29]. An analysis of the literature data on turning and milling made it possible to identify specific factors that affect the change in the height of micro-unevenness, microstructure and residual stresses in the surface layer of the workpiece [18,20,22,26,28,30,31]. (1) This formula is suitable for calculating Rzр when boring, drilling, countersinking, planning and milling using end mills.…”

Meshing Characteristics of Profile Shifted Cylindrical Quasi-Involute Arc-Tooth-Trace Gears. Part 2. Calculation Results

“…According to [1], the improvement of gears quality opens the way to sustainability in gear manufacturing. Moreover, the characteristics of gears usually determine machine's durability, and they can directly impact the operational characteristics that is explicitly expressed in hydraulics machines [2,3]. Parallel-shaft gears are the most extensively used in the transmission systems.…”