Research And Development Of Immersive Virtual Turning Simulation System Based On Wearable Device Oculus

With the development of the technology of virtual manufacturing and virtual reality,virtual manufacturing system provides more convenient conditions for students to study the relevant professional knowledge.In this paper virtual reality technology and machinery manufacturing technology are combined to research immersive virtual manufacturing study system based on the current international advanced wearable virtual reality hardware devices Oculus.Through the system,the students can experience theory described in the processing technic and machining mechanism of various types of machine tools without coming to the factory.This increases the opportunities for students to practice without any security risks.The main research contents of this paper are as follows:Combined with the advantages of wearable virtual reality interactive equipment,the overall design of immersive virtual turning system is carried out.The software platform Unity3D and the immersive virtual reality device Oculus and Leap Motion used by this system are established.The immersive simulation environment is builded based on Oculus in Unity3D software,and the SolidWorks and 3ds Max software are used to complete the modeling and dynamics of the lathe body and spindle box,and then import them into the Unity3D for rendering.The simulation of the form of basic processing turning,geometry angles of cutting tool and internal movement of the spindle box of the lathe are completed in Unity3D.The chip shape and chip formation process under the condition of different turning processing are simulated from the microcosmic and macroscopic angle respectively.Through the establishment of the mathematical model of chip shape parameters,the simulation of chip formation process based on triangular surface is completed.The frustum of a cone discrete method is improved,and the basic interactive turning processing platform through the collision detection is established in Unity3D.And the simulation of interactive virtual turning system is completed based on the gesture interaction device Leap Motion.The interference detection of the parts of the virtual lathe is completed through the hierarchical bounding box method.Compared with the traditional simulation system,this system has high immersion.Students can observe the process of machining from different angles as if they were in the scene of processing through the wearable virtual reality hardware devices and even"get into" the spindle box to watch the movement of the shaft in the headstock.This makes the students get enough exercise of the practical ability,and greatly improves their understanding of theoretical knowledge,thus improves their interest of learning relevant knowledge.The system provides a new path for the similar virtual reality teaching system which will appear in future,and creates a new mode of teaching practice training.