Understanding the characteristics of lead screws of hydraulic universal testing machine

Understanding the characteristics of lead screws of hydraulic universal testing machine

Hydraulic universal testing machineUnlike electronic universal machine, this universal machine is suitable for mechanical performance tests such as tensile, compression, bending, etc. of metals, non-metals, and composite materials. With the changes in the market, the configuration of the universal machine is also changing. The screw is replaced with a ball screw. This universal machine has the following characteristics:

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.

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.

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.

Hydraulic universal testing machineBall screws use ball movement, small starting torque, no sliding movement and other crawling phenomena, and can achieve accurate microfeeding.

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

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.

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