The recent years of the 21th Century are associated with the advent of virtual reality technologies for modern industry and manufacturing engineering. Virtual Machine Tool Technology is given to design, test, control and machine parts in a virtual reality environment. This paper presents the methods to model and simulate the virtual machine tools in response to change in the machining requirements. Specifically, a set of module combination rules and a modeling method of the structure of machine tools using connectivity graph are developed. By this way virtual machine tool is implemented. The developed virtual machine tool can be efficiently used for industry training and machine leaning and operating.