Ball screw is an important precision component in machine tools. There are actually many types of ball screws, which can be divided into cold-rolled ball screws and ground ball screws according to processing methods. The difference lies in whether quenching is required. The ball screw has solid and hollow screws, and solid ball screws are a common type. Today, we will briefly introduce hollow ball screws.

因?yàn)闄C(jī)床的精度有別，那么在機(jī)床運(yùn)行過程中承擔(dān)重要角色的滾珠絲杠也就有精度的區(qū)別。

Because the accuracy of machine tools varies, the ball screws that play an important role in machine operation also have differences in accuracy.

空心滾珠絲杠適合于高精度的機(jī)床，空心滾珠絲杠可以很好地配合傳送機(jī)構(gòu)的高速運(yùn)行，尤其是在要求高精度定位時，因?yàn)檫\(yùn)動會產(chǎn)生熱，熱脹冷縮，熱會使得滾珠絲杠膨脹，為了防止?jié)L珠絲杠的這一變化，空心滾珠絲杠應(yīng)運(yùn)而生，空心滾珠絲杠因?yàn)槭侵锌盏?，阻隔了熱傳?dǎo)，從而達(dá)到冷卻的效果。而且因?yàn)榻z杠軸的中空以及軸兩端的標(biāo)準(zhǔn)化加工，是減小熱膨脹zui有效的方法。

Hollow ball screw is suitable for high-precision machine tools. Hollow ball screw can cooperate well with the high-speed operation of the conveying mechanism, especially when high-precision positioning is required. Due to the heat generated during movement, thermal expansion and contraction can cause the ball screw to expand. In order to prevent this change in the ball screw, hollow ball screw has emerged. Hollow ball screw, because it is hollow, blocks heat conduction and achieves cooling effect. Moreover, due to the hollow of the screw shaft and standardized processing at both ends of the shaft, it is an effective method to reduce thermal expansion.

空心軸滾珠絲杠主要有以下幾個優(yōu)點(diǎn)：

The hollow shaft ball screw has the following advantages:

1、穩(wěn)定的定位精確度

1. Stable positioning accuracy

熱膨脹會導(dǎo)致滾珠絲杠的精度減低，由于空心軸抑制了由于溫度升高而造成的熱脹，所以能夠是的滾珠絲杠的精度穩(wěn)定。

Thermal expansion can lead to a decrease in the accuracy of the ball screw. As the hollow shaft suppresses the thermal expansion caused by temperature rise, the accuracy of the ball screw is stable.

2、有效防止各部分位移

2. Effectively preventing displacement of various parts

還是通過降低熱膨脹的發(fā)生，將滾珠絲杠支撐軸和底座位移控制在zui小的范圍內(nèi)，同時空心軸的冷卻作用有效地阻隔了對其他部位的熱傳導(dǎo)，從而避免了工作臺因?yàn)闊岫l(fā)生變形。

By reducing the occurrence of thermal expansion, the displacement of the ball screw support shaft and base is controlled within a small range. At the same time, the cooling effect of the hollow shaft effectively blocks heat conduction to other parts, thereby avoiding deformation of the workbench due to heat.

3、有效縮短預(yù)熱時間

3. Effectively shorten preheating time

空心軸冷卻作用可以降低溫度上升的幅度，從而縮短了設(shè)備的預(yù)熱時間。

The cooling effect of the hollow shaft can reduce the amplitude of temperature rise, thereby shortening the preheating time of the equipment.

4、有效維持滾珠絲杠的潤滑性能

4. Effectively maintaining the lubrication performance of ball screws

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