High-speed Ball Screw Mechanical Characterization

High-speed precision ball screw is a key feature of CNC machine tools. With the development of high-speed cutting technology, the speed of the ball screw deputy put forward higher requirements. Ball Screw speed and temperature also brought vibration and other problems caused by friction, vibration, temperature rise as a constraint to the speed of the ball screw key factor Friction and noise power high-speed ball screw properties, analysis of key factors influencing the performance of high-speed ball screw, provide theoretical and technical support for high-speed ball screw design and manufacturing, has important theoretical and practical significance.Application of contact mechanics and collision mechanics Combining experiments to study the stiffness characteristics of ball screw, ball dynamic performance, temperature problems and friction screw deputy precision. The main contents include:1) application of classical mechanics theory, the hollow ball screw through hole radius on the axial stiffness and axial screw assembly Microdistortion;2) According to the theory of kinematics, dynamics analysis of the relationship between the balls and return the track to explore the impact of the collision angle and speed of impact forces;3) application of heat transfer theory and Newtonian cooling theory, a screw vice thermodynamic equation. Study on the thermal deformation of screw screw according to the material properties, and by finite element simulation to verify its correctness;4) According to the structural characteristics of ball screw, ball screw study analyzes the causes of error has occurred and propose specific measures to compensate the error.