Manufacturing and study on influence of changes in center distance in circle arc-involute-circle arc gear pump operating at high pressure and high speed

Abstract

This study examined the effect of changes in center distance on a circular-arc gear pump that operates at high pressure and high speed. In principal these types of gear pumps have no trapped-oil and flow ripples. The effect of changes in center distance caused by assembly, machining, radial force and oil film force on the performance of circular-arc gear pumps was studied. The results show that the flow rate, axial force and torque increased linearly with an increase in variables Áx. Computer aided manufacturing for ball end milling has been developed to simulate the process of numerical control of the rotors of circular-arc gear pumps. Two methods for assessing interference are provided. The trajectories of the centers of ball end milling for rough and finish machining are simulated.

Design and performance analysis of herringbone groove journal bearings for high-speed gear pump

“…As the load-bearing component of the gear shaft, the journal bearing bears and counteracts the unbalanced radial force on the gear. Due to the fact that the gear pump is a high-speed gear pump, a circular arc gear pump is used [7][8][9] . The tooth shape is formed by splicing "circular arc involute circular arc", and the coordinate diagram is shown in Figure2 [7][8][9] .…”

“…Due to the fact that the gear pump is a high-speed gear pump, a circular arc gear pump is used [7][8][9] . The tooth shape is formed by splicing "circular arc involute circular arc", and the coordinate diagram is shown in Figure2 [7][8][9] .…”

Simulation Research on Trapped Oil Pressure of Involute Internal Gear Pump

“…However, because the trapped oil area is surrounded by complex curves such as the outer contour of gear, involute, or cycloid [5], it is very difficult to obtain the continuous and uniform oil supply. Up to date, there is much research on the oil trapping phenomenon of the external gear pump and cycloid gear [6], and great improvements have been made. In comparison with external gear pump and cycloid gear, internal gear pumps have advantages such as lighter weight, smaller volume, and higher pressure due to their geometric structure [7].…”

The design and analysis of a high-speed circular arc gear pump journal bearing

“…However, a series of problems arise at high speed, resulting in research on the design of the tooth profile, research on processing methods, fluid analysis, and analysis of performance. [1][2][3] Some problems that arise when a gear pump operates at high speed have been solved theoretically. However, the wear of a gear pump is difficult to analyze theoretically.…”