Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repetitive force, and it has both high precision, reversibility and high Features of efficiency. Due to its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments.
　　 In the process of trapezoidal screw processing, thread and knurling can be completed at one time. For products with high process efficiency, low cost, and low machining accuracy requirements, the structural design ideas and schemes have good promotion and application value.
　　The difference between ball screw and 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 it is to drive the same large load, the ball screw can use a smaller drive power.
　　 Different transmission speeds
　　 The ball screw is rolling friction, and the trapezoidal screw is sliding friction. The temperature rise of the former is much lower than that of the latter when working, so under normal circumstances 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. Therefore, when the conditions of cleaning and lubrication are met, the maintenance life of the ball screw is much higher than that of the trapezoidal screw.
　　 Different self-locking
　　The self-locking property of the screw is generally inversely proportional to the transmission efficiency. Therefore, the ball screw is almost non-self-locking, while the trapezoidal screw has a certain degree of self-locking.
　　Different economy
　　 Judging from the previous and current situation, the ball screw is still more expensive than the trapezoidal screw because of its more complicated structure. However, with the increase in automation equipment and the increase in output, the price difference is getting smaller and smaller.