Study and design of a micro-trochoidal gear pump for high precision dosage of liquids

The current project is based on the industrial interest of AMES S.A. on expanding their market possibilities with trochoidal gears. These special gears are the mechanical system of a specific kind of positive displacement pumps called gerotor pumps. The company has been producing trochoidal gears exclusively for automotive field for decades, and this research is aimed to use the technical knowledge and experience acquired so far about designing and manufacturing these components, to develop a micro-trochoidal gear set with applications in different sectors. Therefore, the main objective is to design and manufacture a new micro gerotor unit from scratch, which will be analysed in an experimental work to prove the concept. The first block is a research of current situation and tendency of gerotors and the emerging applications, where the interest of this project has been justified and micro-trochoidal pumps have been revealed as a rising product. The technical development stage includes the design of the gears along with drawings with the support of GeroLAB, the definition and optimization of a specific manufacturing process, the prototyping of the components following the items set before and a metrology control of the most important parameters. Lastly, the experimental work carried out consist of measuring the volumetric flow and the efficiency of the prototypes manufactured with a test bench, and have validated the proof of concept presented. The volumetric results obtained during this first approach show values considerably good, and help to understand the parameters which affect the most to the performance