| High performance CNC system is the basic guarantee for the hig-precision digital processing. High precision CNC experiment flatform is an important means to research high performance CNC technology deeply.A double-drive and high-precision CNC milling experimental platform has been designed on self research. In this paper, the following details are presented:gantry structure with good dynamic performance is selected for feed motion of the platform; granite is chosen as the material of platform's foundation bed,upright and beam, so as to achieve good temperature stability and dynamics performance; double servo motor synchronized drive is applied for beam's feed in X direction, in order to improve platform's processing precision; HSR high-accuracy linear guide and BNFN ball screw of THK company are used for feed motion of the platform's three linear axes.The self-designed triaxial planomilling platform is modeled by Pro/E.Through ANSYS workbench, the static force and model analysis are carried out for the whole machine and critical parts like beam and workbench, to check the platform's static and dynamic property. The analysis results show that the platform's beam, upright's stiffness and worktable's intensity meet the designed requirements; meanwhile, machine body's granite structure raise the natural frequency effectively, achieving the designed goal of shakeproof.YASKAWA servo motor and servo unit are chosen as the drive part, laserscale is selected as the position feedback part to improve position precision,and IPC and general I/O board are applied together to put up the numerical control system's hardware platform.Meanwhile, core functional modules of numerical control system are studied intensively, and numerical control system based on windows is developed with VC++6.0, among which some core functional modules such as coding,interpolation, position control, acceleration and deceleration control are designed, with software compiled and debugged. |
PDF Full Text Request