This bachelor thesis shows process of development and design of tractor powered rotary tiller. At the very beginning, ways of attaching to the tractor and drive of the machine were analysed. Then, the overview of the devices on the market was given and functional structure was created. For each function several solutions were given in morphological matrix and 3 concepts were made. Concepts were compared and the best was selected. This concept was elaborated, necessary calculations were made and then the model and technical documentation of device were created.