The subject of this graduate thesis was compose a project of the technological process of injector carrier body in quantity of 8000 pieces. At the beginning it was necessary to make a tehnological analysis of workpiece, where we define form, material, permissible deviations and quality of processing. Then we need to make an analysis of the estimation of the production value, how we can decide whether the input material is selected by rod or forged steel. After calculating that it is cheaper to produce if input material will be forged steel, we need to select the production equipment, the machines where the individual operations would be performed, then the technological process had to be elaborated. The elaboration defines the time of making some operations, that is, the time of making every single operation. All the tools that will be used to perform are also defined. After processing, it was necessary to create a technological documentation. After that, we need to make a 3D model of workpiece, and at the end, it was necessary to create a simulation of the processing using software package SolidCAM.