What Is The Difference Between Ball Screw And Sliding Screw in Structure And Application

Ball screw is the most commonly used transmission component in machine tools and precision machinery. It is composed of screw, nut, steel ball, pre-press, reverser and dust collector. Its main function is to convert rotary motion into linear motion, or convert torque into repetitive torque, and it has the characteristics of high precision, reversibility and high efficiency. The invention is mainly applied to some large-sized machine tools, etc., and it is convenient to convert the rotary motion into the linear motion, thereby greatly reducing the rotational wear of the entire equipment.

    Ball screw vs. slider.

    Purpose comparison:

    The ball screw is used for precision transmission, with high efficiency, flexible transmission, and maintainable precision; the precision and efficiency of the sliding wire are a little worse than that of the ball screw, and the sliding screw is larger than the ball screw, and the sliding wire The temperature of the rod is also relatively low (for prolonged use).

    Ball screw and sliding screw transmission efficiency

    1. The transmission efficiency of the ball screw is about 90%-99%.

    2. The transmission efficiency of the sliding screw is about 25%-50%.

    3. Using a ball screw to drive the same large load can improve the transmission efficiency, reduce energy consumption and improve accuracy.

    The difference between the accuracy of the ball screw and the sliding screw

    The precision of a ball screw is beyond the reach of a screw. Therefore, only ball screws can be installed on testing instruments with high precision requirements.

    The difference between ball screw and sliding wire in application:

    Ball screws are mostly used in CNC machine tools, positioning tables and other occasions that require precise positioning and transmission, and are often used with stepper motors and servo motors;

    The sliding screw is generally only used to transmit force. There is no high positioning requirement, and there is no need for long-term continuous use.

    The pros and cons of ball screws

    Advantages: high efficiency, high precision, high speed;

    Disadvantages: high requirements for the use environment and high price;

    The pros and cons of sliding screw:

    Advantages: low price, self-locking (partial);

    Disadvantages: low efficiency, low precision, low speed;