當數控機床出現反向過失大、定位精度不穩定、過象限出現刀痕時，首要要檢查精密滾珠絲杠有沒有空地。檢查的方法有什么？下面導軌絲杠廠家為您講解：

When the CNC machine tool has large reverse error, unstable positioning accuracy, and tool marks across the quadrant, the first thing to check is whether the precision ball screw has space. What are the methods of inspection? The guide rail lead screw manufacturer will explain to you:

需準備兩塊百分表，一塊百分表合作鋼球放在絲杠的一端基地孔中，測量絲杠的軸向竄動，另一塊百分表測量作業臺移動。正反翻滾絲杠，查詢兩塊百分表上反映的數值，根據數值不相同的改動供認缺點部位.

Two dial indicators shall be prepared. One dial indicator cooperation steel ball shall be placed in the base hole at one end of the lead screw to measure the axial movement of the lead screw, and the other dial indicator shall measure the movement of the workbench. Turn the lead screw forward and backward, query the values reflected on the two dial indicators, and identify the defective parts according to the different values

如測量絲杠的百分表在絲杠正反向翻滾時指針沒有搖晃，說明絲杠沒有竄動。如百分表指針搖晃，說明絲杠有竄動景象。

If the pointer of the dial indicator measuring the lead screw does not shake when the lead screw rolls forward and backward, it means that the lead screw does not move. If the pointer of the dial indicator shakes, it indicates that the lead screw moves.

該百分表大與小測量值之差便是絲杠的軸向竄動的距離。這時，我們就要檢查支撐軸承的背帽是不是鎖滾珠絲杠副緊、支撐軸承是不是已磨損失效、預加負荷軸承墊圈是不是適合。

The difference between the large and small measured values of the dial indicator is the axial displacement distance of the lead screw. At this time, we need to check whether the back cap of the support bearing is tight with the locking ball screw, whether the support bearing is worn out, and whether the preloaded bearing washer is suitable.

假設軸承沒有疑問，只需從頭配做預加負荷墊圈就可以了。假設軸承損壞，需要把軸承更換掉，從頭配做預加負荷墊圈，再把背帽背緊。絲杠軸向竄動大小首要在于支撐軸承預加負荷墊圈的精度。絲杠設備精度理想的情況是沒有正反空地，支撐軸承還要有0.02mm支配的過盈。

Assuming that there is no doubt about the bearing, just make the preloaded washer from scratch. Assuming that the bearing is damaged, it is necessary to replace the bearing, make a preloaded washer from the beginning, and then tighten the back cap. The axial movement of the lead screw mainly depends on the accuracy of the preloaded washer of the support bearing. The ideal condition for the accuracy of the lead screw equipment is that there is no positive and negative space, and the support bearing also has a 0.02mm dominant interference.

如檢查出精密滾珠絲杠存在空地。首要檢查絲杠和螺母的螺紋圓弧是不是現已磨損，如磨損嚴重，有必要更換全套絲杠螺母。如檢查磨損纖細，就可以更換更大直徑的滾珠來批改。

If the precision ball screw is found to be empty. First, check whether the thread arc of the lead screw and nut is worn. If the wear is serious, it is necessary to replace the full set of lead screw nuts. If the wear is fine, the ball with larger diameter can be replaced for correction.

要檢查出絲杠螺母副的空地，換算成滾珠直徑的增加，然后選配適合的滾珠從頭安裝。精密滾珠絲杠運動不平穩、噪音過大等缺點的修補。

Check the clearance of the screw nut pair, convert it to the increase of the ball diameter, and then select the appropriate ball to install from the beginning. Repair the defects of the precision ball screw, such as unstable movement and excessive noise.

滾珠絲杠螺母副運動不平穩和噪音過大，大多滾珠絲杠副數是由于潤滑不良構成的，但有時也也許因伺服電機驅動參數未調整好構成的。

The movement of the ball screw nut pair is not smooth and the noise is too loud. Most of the ball screw pairs are caused by poor lubrication, but sometimes the servo motor drive parameters are not adjusted properly.

絲杠在作業中如發生噪音和振動，在檢查傳動有些沒有疑問后，首要要考慮到潤滑不良的疑問，絲杠螺母自動潤滑系統一般堵塞，不能自動潤滑。更多相關內容就來我們網站http://www.pet998.com咨詢吧！

In case of noise and vibration during the operation of the lead screw, after checking whether there is any doubt about the transmission, the first consideration should be given to the question of poor lubrication. The automatic lubrication system of the lead screw nut is generally blocked and cannot be automatically lubricated. Come to our website for more relevant content http://www.pet998.com Ask!