The theoretical researches of the tamping tool and particularly of the active part have permitted accomplishments regarding to constructive and functional geometry of active part of the tamping tools. The analyze and the study of the functional and constructive geometry of active part of the tamping tools has a great importance regarding to discover and design a new constructive geometry, which can help to obtain a new tamping tools much better for their technologically qualities or on the other hand to obtain a new functional geometry, much better regarding the exploitation of the tamping tools and the quality of the tamping operation