1, Production and processing problems: When the ball screw machining, screw pretension is in the assembly with screw two ends of the lock nuts according to requirements on the length of the bias of the screw applying the inevitable tension to adjust the screw positive and negative nuts of reverse tightness, the reason is that the screw in the operation of temperature rise, the thermal stress effect will stretch the screw, so the length of the screw becomes unstable. The goal is to effective eliminate the elastic variables of the component to achieve a stable activity precision. Otherwise, in the micro-feed when the damping force of carriage or workbench is greater than the elastic torque of the screw and nut, the workbench without displacement, with the feed screw and nut cumulative elastic torque exceeds the damping torque of table at this time the table impulsive displacement. Although the total amount of feed may not be affected, but the actual number of steps, each step of the feed rate and controller output errors, the consequences are seriously affecting the machining accuracy.
2, In order to determine the diameter of the ball screw load. Motor performance parameters in the output torque, if still with a reducer also included, calculate the actual working conditions of the necessary force, the choice of nominal diameter of ball screw.
3, When purchasing must determine the ball screw precision.
4, Asks the selected product manufacturers price, payment method and delivery time. This is very important.
Source: http://www.machineballscrew.com
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