The state of the small gap between the thread groove of the ball screw and the ball will greatly change the characteristics of the ball screw. In practice, we can also use preload to adjust the accuracy requirements of the lead screw.

所謂預(yù)緊為了減小滾珠絲杠的間隙，提高剛性，使用一組滾珠，或者一對絲母沿軸向相互位移而施加在滾珠絲杠上的力。

In order to reduce the clearance of the ball screw and improve the rigidity, the so-called pre tightening uses a group of balls or a pair of screw nuts to displace each other along the axial direction and apply the force on the ball screw.

滾珠絲杠螺母,滾珠絲杠軸承,滾珠絲杠導(dǎo)軌,滾珠絲杠電機(jī),滾珠絲杠安裝

Ball screw nut, ball screw bearing, ball screw guide rail, ball screw motor, ball screw installation

滾珠絲桿,滾珠絲杠精度

Ball screw price, ball screw accuracy

經(jīng)常看絲杠的選型目錄的設(shè)計師們會了解，在選型中我們會看軸向間隙，不同的種類和型號，軸向間隙是不同的，這里就是軸向間隙。

Designers who often look at the selection catalog of lead screws will understand that in the selection, we will look at the axial clearance. The axial clearance is different for different types and models. Here is the axial clearance.

關(guān)于絲杠的一些名詞解讀：

Interpretation of some terms of lead screw:

1、定位預(yù)緊：

1. Positioning preload:

用螺紋軸和滾珠之間的位置關(guān)系進(jìn)行預(yù)緊的方法

Preloading method using the position relationship between threaded shaft and ball

2、導(dǎo)程改變方式：

2. Lead change mode:

在加工絲母的中螺紋溝槽時候通過改變導(dǎo)程，偏離出預(yù)緊量大小進(jìn)行預(yù)緊式

When machining the middle thread groove of the screw nut, the preload is carried out by changing the lead and deviating from the preload

3、墊片方式：

3. Gasket method:

在兩個絲母構(gòu)造之間加入預(yù)緊量的墊圈或者墊片進(jìn)行預(yù)緊的方法

A method of pre tightening by adding a pre tightened washer or gasket between two screw nut structures

4、定壓預(yù)緊：

4. Constant pressure preloading:

使用彈簧力的預(yù)緊方法

Preloading method using spring force

5、大號滾珠預(yù)緊方式：

5. Preloading method of large ball:

插入比螺紋溝槽形狀稍大的滾珠，通常在受力較大的狀態(tài)下進(jìn)行預(yù)緊的方法

The method of inserting a ball slightly larger than the shape of the thread groove is usually preloaded under a large force

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