Design and Simulation of an Intermittent Gearing Mechanism for a Positive Drive Double-Piston Synchronous Pump

The paper presents a novel design for an intermittent motion mechanism based on mutilated helical gears for use in a double-piston synchronous pump. The mechanism consists of two mirror-image gear trains which branch from a central spur gear driver. For a pump with a 60° angle between the inlet and outlet ports, the mutilation ratio was 5:6, and the number of teeth ratio between the driven helical gear and the final spur gear was 2:1.