聯軸器所連接兩軸的對中，也稱找正。軸的準確對中，可使整個傳動系統運行平穩，不會產生異常振動、噪聲和異常磨損，也不會產生不正常的附加載荷，這對確保系統可靠運行，尤其是對高速回轉軸系，具有十分重要的意義。下面導軌絲杠廠家為您講解更多：

The alignment of the two shafts connected by the coupling, also known as alignment. The accurate alignment of the shaft can ensure the smooth operation of the entire transmission system, without generating abnormal vibration, noise, and wear, as well as abnormal additional loads. This is of great significance for ensuring the safe and reliable operation of the system, especially for high-speed rotating shaft systems. The manufacturer of the guide rail screw will explain more to you below:

事實上任何軸系的安裝都會存在不可避免的誤差，一般兩連接軸的安裝偏差可概括為四種情況，即理想對中和存在著徑向、角向偏差及徑向與角向負荷偏差。

In fact, there are inevitable errors in the installation of any shaft system. Generally, the installation deviation of two connecting shafts can be summarized into four situations, namely, there are radial and angular deviations in ideal alignment, as well as radial and angular load deviations.

實際安裝時應使兩軸的徑向及角向偏差越銷越好，這主要是考慮到設備運行過程中不可避免地存在著如基礎下沉、各部件的不均勻熱膨脹、軸的彎曲、零部件的磨損等各種情況，這些都會對軸系的對中產生不利的影響。

During actual installation, the radial and angular deviations of the two shafts should be as small as possible. This is mainly due to the inevitable existence of various situations during equipment operation, such as foundation sinking, uneven thermal expansion of various components, shaft bending, and wear of components, which can have adverse effects on the alignment of the shaft system.

因此安裝時控制徑向及角向安裝偏差，一般可將其控制在允許偏差的1/8~1/3，這將會為運行過程中產生新的偏移留下一定的補償空間，從而確保運行時兩軸仍能對中良好并運行。

Therefore, during installation, control the radial and angular installation deviations, which can generally be controlled within 1/8-1/3 of the allowable deviation. This will leave some compensation space for new deviations during operation, ensuring that the two shafts can still be aligned well and operate safely during operation.

對于一些高速的回轉軸系或發熱量比較大、兩側熱膨脹量差別比較大的軸系，如果冷態安裝時按零偏差對中，那么實際運行時兩軸將會產生明顯的不對中。

For some high-speed rotating shaft systems or shaft systems with large heat generation and significant differences in thermal expansion on both sides, if zero deviation alignment is used during cold installation, there will be significant misalignment between the two shafts during actual operation.

因此這種情況下，一般應事先測出或算出工作狀態時兩端的熱膨脹量之差，在冷態調整時預留好這一差值，以使其熱態運行時能正常對中，從而保證軸系在熱態運行時的性。

Therefore, in this case, the difference in thermal expansion between the two ends during operation should generally be measured or calculated in advance, and this difference should be reserved during cold adjustment to ensure normal alignment during hot operation and ensure the safety of the shaft system during hot operation.

兩軸對中的方法多種多樣，根據軸系工作轉速的高低、聯軸器類別的不同可分別采用不同的方法。

There are various methods for aligning two shafts, and different methods can be used according to the working speed of the shaft system and the type of coupling.

①利用直尺測量聯軸器的同軸度誤差，利用塞規測量聯軸器的平行度誤差。這種方法簡單，但誤差大。一般用于轉速較低、精度要求不高的機器。

① Use a ruler to measure the coaxiality error of the coupling, and use a plug gauge to measure the parallelism error of the coupling. This method is simple, but has a large error. Generally used for machines with low speed and low accuracy requirements.

②用百分表找正隊中。采用百分表進行找正對中的方法有許多種，例如單表法、雙表法、三表法等。這里介紹一種操作簡單，讀數、數據處理及調整都很方便，且對中效果也很好的雙表法。更多相關事項就來我們網站http://m.306135.com咨詢！

② Use a dial gauge to align the line. There are many methods for using a dial indicator for alignment and alignment, such as single table method, double table method, three table method, etc. This article introduces a dual meter method that is easy to operate, convenient for reading, data processing, and adjustment, and also has good centering effect. For more related matters, come to our website http://m.306135.com consulting service