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Do You Really Understand One Of The Key Components That Restrict The Development Of China’s Machine Tools—-Ball Screw?


Do You Really Understand One Of The Key Components That Restrict The Development Of China’s Machine Tools—-Ball Screw?
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At present, the ball screw used in the machine tool has low-cost domestically produced products and also has imported products such as Japan and Europe with high precision. The use of imported products is often in machine tools that have high requirements for processing speed, accuracy, longevity, and stability.

As the speed of the machine increases, the use of the guide rails is also converted from sliding to rolling. In China, the use of sliding guides is still the most common due to the low speed of the machine tools and the cost of manufacturing, but the number of machines using ball guides and roller guides is rising rapidly. Since the rolling guide has the advantages of high speed, long life, preloading, and convenient installation, with the improvement of machine tool performance and numerical control requirements, the increase of the use ratio of the rolling guide is an inevitable trend.

 

Definition

A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary. The ball assembly acts as the nut while the threaded shaft is the screw. In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to re-circulate the balls.

Ball screws are widely used in a variety of industrial equipment and precision instruments due to their low frictional resistance.

A 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.

Application

Ultra-high DN ballscrew: high-speed machine tool, high-speed integrated machining center

Endcap ballscrew: fast handling system, general industrial machinery, automatic machinery

High-speed ballscrew: CNC machinery, precision machine tools, industrial machinery, electronic machinery, high-speed machinery

Precision grinding grade ballscrew: CNC machine, precision machine tool, industrial machinery, electronic machinery, conveying machinery, aerospace industry, other antenna actuators, valve switch devices, etc.

Nut Rotary (R1) series ballscrew: semiconductor machinery, industrial robot, woodworking machine, laser processing machine, conveying device, etc.

Rolling grade ballscrew: low friction, smooth running, fast delivery and low price

Heavy-duty ballscrew: all-electric injection molding machine, punching machine, semiconductor manufacturing equipment, heavy-duty brake, industrial machinery, forging machinery

Features:
1. Low friction loss and high transmission efficiency

Since there are many balls between the screw shaft of the ball screw pair and the screw nut 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 sliding screw pair. It is very helpful in saving electricity.

2. High precision

The ballscrew pair is generally produced in the world with the highest level of mechanical equipment. Especially in the factory environment of grinding, assembly, and inspection, the temperature and humidity are strictly controlled, due to the perfect quality management system. The accuracy is fully guaranteed.

3. High-speed feed and micro-feeds possible

Since the ballscrew pair uses the ball movement, the starting torque is extremely small. And there is no creeping phenomenon such as sliding motion, and accurate micro feed can be ensured.

4. Can not be self-locking, with the reversibility of the transmission

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