2013年8月16日星期五

Speed ​​cutter strength calculation model


High-speed cutting tools under the centrifugal force is the key to whether the failure occurred cutter body strength is adequate, machine tool clamping parts of the clamp is reliable. When the centrifugal force as the main load calculation tool body strength, due to the complexity of the tool shape, with the theory of classical mechanics the results calculated error is large, and often can not meet the security requirements of the design.
    In order to tool design stage of its structural strength of the centrifugal force of the force and deformation for qualitative and quantitative analysis, can be calculated by the finite  cutting tools  of stress magnitude different speeds to simulate the failure process and improve the design. Speed ​​cutter finite element model including blade,  abrasive wheels  body, blade and clamping screws. First calculate the cutter body (including screws, blades and other parts quality) elastic deformation, and then the isolated knife block for a detailed analysis of the obtained elastic deformation of the blade knife blocks as boundary conditions applied to separation of the body; then cut out the knife blades, screws and massless friction composition insert clamping system model for clamping reliability analysis. Finite element model can simulate the knife blade in the inclined sliding, rotating, and the deformation of the clamping screw, calculate the displacement of the lower blade at different speeds and the size of the screw force.

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