Ball screw definition and its characteristics

Ball screws are ideal for converting rotary motion into Linear Motion or converting linear motion into rotary motion.

The Ball Screw consists of a screw, a nut and a ball. Its function is to convert the rotary motion into a linear motion, which is the further extension and development of the ball screw. The significance of this development is to change the Bearing from rolling action to sliding action. Ball screws are widely used in a variety of industrial equipment and precision instruments due to their low frictional resistance.

Ball screw is the most commonly used transmission component in machine tools 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 screw features:

1. The driving torque is 1/3 compared with the sliding screw pair

Since there are many balls between the screw shaft and the nut of the ball screw pair for rolling motion, high movement efficiency can be obtained. Compared with the past sliding screw pair, the driving torque is less than 1/3, that is, the power required to achieve the same motion result is 1/3 of the use of the rolling screw pair. It is very helpful in saving electricity.

2, high-precision guarantee ball screw pair is produced in the world's highest level of mechanical equipment made in Japan, especially in the grinding, assembly, inspection of the factory environment, the temperature and humidity have been strictly controlled Due to the perfect quality management system, the accuracy is fully guaranteed.

3, micro-feeding may be due to the ball movement, so the starting torque is very small, there will be no crawling phenomenon like sliding movement, can ensure accurate micro-feed.

4, no backlash, rigid high ball screw pair can be added to the pressure, due to the pre-pressure can make the axial gap to a negative value, and then get a higher rigidity (in the ball screw by adding pressure to the ball, in actual use When the mechanical device or the like is used, the rigidity of the wire mother portion can be enhanced due to the repulsive force of the ball.

5. High-speed feed may cause high-speed feed (motion) due to high movement efficiency and low heat generation.