梯形丝杆的介绍

The Use of Trapezoidal Screw and the Calculating Method of Ball Number

作者:   日期:2019-07-08  来源:  关注:4

The number of balls in different screw is different, from dozens to hundreds. In principle, balls should fill the raceway, and the gap between each two balls should be less than the diameter of two balls. If the diameter is 32mm and the ball is 6mm, there are 28 balls. Ball screw is a commonly used transmission element 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. It has the characteristics of high precision, reversibility and high efficiency.


Because of its small friction resistance, ball screw is widely used in various industrial equipment and precision instruments. Ball screw is composed of screw, nut, steel ball, pre-pressing sheet, reverser and dust preventer. Its function is to transform rotational motion into linear motion, which is the further extension and development of Eckham screw. The important significance of this development is to change the bearing from sliding motion to rolling motion.


Purpose of trapezoidal screw:


First, the electronic industry. In the electronic machinery industry, trapezoidal screw is widely used in many devices, such as measuring instruments, which require high accuracy of measurement, so the guide on them is also required to be high precision. Among all kinds of guideways, the reversibility of ball guides is remarkable, and its flexibility is very good, so it can meet the accuracy requirements of measuring instruments by using trapezoidal lead rods. It can be said that as long as it is user requirements, can promote the corresponding distance.


Second, mechanical field. In the mechanical field, it has a wider range of products, because in the mechanical industry, machinery has a high demand for the processing of each part. Whether it is milling machine, grinding machine or drilling machine, lathe, etc., as long as the products processed with these equipment, the accuracy error is generally less than 0.1 mm. So these processing tools are called precision tools. The invention of trapezoidal screw helped to realize their functions.


Third, the field of numerical control. In the field of numerical control, trapezoidal screw is also widely used. Many CNC machinery and equipment are large-scale. They can realize automatic manufacturing, but this will not affect the accuracy of its processing, but in terms of processing efficiency has been greatly improved. The use of trapezoidal screw enables the linear motion and rotary motion on CNC processing machinery to achieve free conversion, and the processing accuracy is also guaranteed.


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