Ball screw bearing installation

Ball screw by screw, nut, steel ball, preloading, reverser, dust control device. Its function is to convert rotary motion to linear motion, because of the very small friction resistance, ball screw is widely used in all kinds of industrial equipment and precision instruments. Ball screw is the most commonly used on machine tools and precision machinery transmission components, its main function is to convert rotary motion to linear motion, or convert torque into axial force repeatedly, at the same time combines the characteristics of high accuracy, reversibility and high efficiency. Ball screw pair is between the screw and nut for ball screw drive roller components. There are many structural type of ball screw pair. According to the ball circulation way is divided into inner loop and outer loop two categories. Ball screw vice installation usually has the following kinds: ( 1) Double push - — Free way, screw fixed at one end, end free. The fixed end bearing under axial force and radial force at the same time. This way of bearing used for small short screw. ( 2) Double push - — Bearing, screw end fixed and other end bearing. The fixed end bearing under the axial force and radial force at the same time; Bearing end bearing under radial force only, and can trace the axial float, can avoid or reduce the screw by gravity bending. At the same time, screw elongation thermal deformation can freely to the end. ( 3) Double push - — Double push method, screw both ends fixed. Fixed end bearing can bear axial force and radial force at the same time, this way of supporting, can apply for screw proper tension, improve the support stiffness, screw can partially compensate the thermal deformation of a ball screw. ( 4) Using screw fixation, nut rotation mode of transmission, at this point, the rotation, one edge fixed screw nut side make axial movement: because of the screw, can avoid limited by critical speed, to avoid the long ball screw the problems at high speed. Nut inertia small, flexible motion, it can realize high speed. This way can apply to screw the larger tension, improve the screw bearing stiffness, compensate the thermal deformation of a ball screw. Installed either way its installation method are: on both ends of the ball screw through the bearing and the bearing seat connected to the connection through the bearing seat and equipment. Screw nut through a flange, key or screw and nut connection. Screw the card after spring loaded bearing or lock nut bearing fixed. 【 Warm prompt. 【 The bearing network] Some information from the Internet, and strive to secure timely, accurate, aims to deliver more information, does not represent our views to its approval or responsibility for their authenticity. If this net reprint information involves the issues such as copyright, please contact with this net. Tel: 0571 - 81630205. Tags: install and remove