What are the advantages of commonly used lead screws for electronic universal testing machines?

Currently, the common screws of electronic universal testing machines on the market include ball screws and trapezoidal screws. Ball screws are generally widely used due to their small gap and high accuracy.

1. High efficiency and energy saving
Since there are many balls between the screw shaft of the ball screw pair and the screw nut for rolling movement, the movement efficiency is high. That is, if the same large load is driven, a ball screw can use a smaller driving power, which can reduce costs and save energy.

2. High-speed transmission can be achieved

The ball screw can achieve high-speed transmission due to its high movement efficiency and low heat generation.

3. High accuracy

Ball screws use ball movement, small starting torque, no sliding movement and other crawling phenomena, and can achieve accurate microfeeding.

4. Long service life

The surface damage caused by rolling friction is small, so when the conditions such as cleaning and lubrication are met, the ball screw maintains a high life.

5. No self-locking

Self-locking is generally inversely proportional to transmission efficiency. The higher the transmission efficiency, the smaller the self-locking ability. Therefore, the ball screw has almost no self-locking ability.

6. No side gap and high rigidity

The ball screw can be applied to the pressure, because the pressure can make the axial gap reach a negative value, thereby obtaining higher rigidity.

7. High cost performance

Ball screws are generally a bit expensive, but considering their transmission rate, service life, accuracy and other characteristics, the cost-effectiveness is extremely high.

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