Design Research Of Small-scale Rotary Engraving Machine

Small-scale rotary engraving machine provides the processing conditions for all aspects of the quality of life for modern people. Which meet increasingly high demand for increasingly diverse varieties, product miniaturization and more precision. Frame is a key support member for small rotary engraving machine. It should have excellent static and dynamic characteristics, determines the overall performance of the machine. The main components of the frame structure include beam, arm and base. They have an important influence on the deformation, the stress, stiffness, stability and vibration resistance of the frame. So, used Solidworks to made3D modeling for machine and used ANSYS Workbench to have finite element analysis on the frame, made the following main aspects of research:(1) According to research at home and abroad, to determine the focus of this study: Calculate and check the key components of motion control systems, finite element simulation analysis of frame structure optimization, experimental modal analysis.(2) First have an overall design for small rotary engraving machines. Preliminary design of the engraving machine bed structure is based on the overall frame for the carrier rack structure. Then go to calculation, selection and verification the key components of the engraving machine X, Y, Z three directions of motion control system. Which Include ball screws, bearings and servo motors.(3) Used ANSYS Workbench to have Finite Element Analysis for the initial design of the frame, including static analysis and dynamic analysis. Get the maximum amount of deformation, the maximum stress and weak local of frame by static analysis. Extracting modal top12bands and X, Y, Z three directions harmonic spectral response curves were to analyze the dynamics of frame by dynamic analysis.(4) Basing on static and dynamical analysis results of an initial design frame to guide the frame structural improvements. First, gradual improvements for frame, including arm structure optimization and beam structure optimization, to find the optimum improvement program by static analysis. Then overall optimization based on the gradual optimum solution for frame to be had s dynamic analysis, so that the improved frame performance is improved.(5) Established an experimental platform of frame-optimized. Using experimental modal testing system LMS Test.Lab9A had a hammering Modal for frame which is a single point excitation and multi-point output. Finally, modal analysis and simulation ware to verify, to confirm the reliability of the simulation analysis.