Basic Research Of Motion Simulation Of Multi-axis CNC Machine Tools

During CNC machining process, in order to test the correctness of the Gcode,previous test cutting process is replaced by the use of CNC machining simulation, whichimproves the use efficiency of CNC machine tools and also increases security. Theprevious NC machining simulation research has focused on graphical operationalsimulation, only for a specific form of CNC machine tools. The purpose of this paper isto propose an independent graphics kernel CNC machining simulation framework, toachieve any form of multi-axis series of CNC machine tool motion simulation andapplication.Firstly, CNC machine virtual tools is described as the most basic coordinate systemand entities, coordinate system and entities to the component, then series into motioncertain relationship chain. Followed by a detailed description of the kinematic chainmovement to achieve the kinematic chain machine tool components in series componentcontains a component coordinate system and entities, entity relative to the componentssitting shows the system is fixed, so the componentsthe movement on the coordinatesystem conversion became the components steric shape. We use the four points todescribe the coordinate system, and ultimately turn decomposed into the motion of thekinematic chain of the translation and rotation of the points along the spatial vector.Therefore, we can determine the virtual steric shape of the various components of themachine tool coordinate system at any time, and we are most concerned about is the endof the knife shaft with the position of the workpiece coordinate system. Described above,we can get to any multi-axis CNC machine tool end of the bit-shaped workpiececoordinate system, the knife shaft orthographic projection to the workpiece coordinatesystem can be a bit under the knife in the workpiece coordinate system, the workpiececoordinate system simulationinspection and processing code in a more intuitive way.Moreover, the tool axis vector to get the machine coordinate system at any time, you canachieve any form of CNC machine tool length compensation, no need for the machine inthe form formula derivation.Take advantage of the open graphics core OpenGL, to write a the modular CNCmachining simulation program, mainly includes three parts: human-computer interaction,machine framework described parsing code. Due to the machine components steric shape computing and graphics kernel has nothing to do, the graphics kernel only as theultimate display of tools, you can emulator ported to other graphics kernel.Finally, through the experiment, the simulation program can build any multi-axisCNC machine tools and motion simulation, illustrates the versatility of the simulationframework, and CNC machining.