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The biggest difference between ball screw and trapezoidal screw.
Source: | Author:wangzhf181130 | Publish time: 2019-04-17 | 118 Views | Share:
Ball screw is the most commonly used transmission component in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or to convert torque into axial repetitive force, with high precision, reversibility and high. The characteristics of efficiency. Ball screws are widely used in a variety of industrial equipment and precision instruments due to their low frictional resistance.In the processing of trapezoidal screw rods, the thread and knurling process has high process efficiency, low cost and low processing precision. The structural design ideas and schemes have better application value.

Ball screw is different from trapezoidal screw

Different transmission efficiency
The transmission efficiency of the ball screw is about 90~96%, and the transmission efficiency of the trapezoidal screw is about 26~46%. If you drive the same large load, you can use a smaller screw drive with a ball screw.

Different drive speeds
The ball screw is rolling friction, and the trapezoidal screw is sliding friction. When the work is carried out, the temperature rise of the former is much lower than that of the latter, so in general, it can undertake the task of high-speed transmission.

Different service life
The surface damage of rolling friction is much smaller than that of sliding friction, so the ball screw has a much higher maintenance life than the trapezoidal screw when the conditions such as cleaning and lubrication are met.

Different self-locking
The self-locking property of the screw is generally inversely proportional to the transmission efficiency. Therefore, the ball screw is almost self-locking, and the trapezoidal screw has a certain self-locking property.

Economic difference
From the previous and current situation, the ball screw is still more expensive than the trapezoidal screw because its structure is more complicated than the trapezoidal screw. However, as the number of automation equipment increases and the output increases, the price difference becomes smaller and smaller.