The topic of this final thesis was to create a 3D model and a simulation of a linear guide for the educational robotic arm DOBOT. To create a spatial computer model and simulate a linear guide, it was first necessary to create individual parts of the model so that they could be combined into one ensemble and obtain a virtual 3D model of the laboratory. The first step is measuring all the individual parts and making sketches with the required dimensions. Accurate measuring is performed with the help of a movable scale and a hand-held meter. The most precise measuring requires that we follow all of the listed instructions and read each dimension individually. A list of all standard parts is compiled so that these parts do not have to constructed. The SolidWorks computer program uses its database, which contains a large number of official parts classified by standards and labels. The second step is sketching all of the components from the linear guide for the educational robotic arm.We started designing objects using SolidWorks program. The process of obtaining a 3D model begins with the creation of a 2D drawing, which is later transformed into a 3D model with the necessary tools to perform a design in to get a more realistic view of the actual individual part. After we had made all of the required components that make the linear guide, we started assembling the 3D model. The assembly starts from the main construction part, which is followed by the necessary parts that we have previously designed. It is necessary to set and limit the working space for all of the moving parts. We did the same thing using an interface that allows us to set all the parameters to ensure the linear movement of the stand along robot with the entire profile while keeping the robot in its workspace. Once we have limited the linear motion of the robot stand, the next step was making a simulation of the movement of the stand-alone robot over the linear guide. The simulation itself, provided us with a realistic view of the work and functioning of the linear guide for the educational robotic arm DOBOT.