常用的循環(huán)方式有兩種：內(nèi)循環(huán)和外循環(huán)。導軌絲杠廠家提醒，始終與絲杠保持接觸的稱為內(nèi)循環(huán)；滾珠在循環(huán)過程中有時與絲杠脫離接觸的稱為外循環(huán)。滾珠每一個循環(huán)閉路稱為列，每個滾珠循環(huán)閉路內(nèi)所含導程數(shù)稱為圈數(shù)。內(nèi)循環(huán)滾珠絲杠副的每個螺母有2列、3列、4列、5列等幾種，每列只有一圈；外循環(huán)每列有1.5圈、2.5圈和3.5圈等幾種。

There are two common circulation modes: internal circulation and external circulation. The guide rail lead screw manufacturer reminds that the one that always keeps contact with the lead screw is called internal circulation; The ball sometimes disengages from the lead screw in the process of circulation, which is called external circulation. Each ball loop is called a column, and the number of leads contained in each ball loop is called the number of turns. Each nut of the inner circulation ball screw pair has 2 rows, 3 rows, 4 rows, 5 rows, and each row has only one circle; There are 1.5, 2.5 and 3.5 cycles in each column of the outer circulation.

1內(nèi)循環(huán)：

1 Internal circulation:

內(nèi)循環(huán)均采用反向器實現(xiàn)滾珠循環(huán)，反向器有兩種類型。圓柱凸鍵反向器，它的圓柱部分嵌入螺母內(nèi)，端部開有反向槽2。反向槽靠圓柱外圓面及其上端的圓鍵1定位，以保證對準螺紋滾道方向。扁圓鑲塊反向器，反向器為一般圓頭平鍵鑲塊，鑲塊嵌入螺母的切槽中，其端部開有反向槽3，用鑲塊的外輪廓定位。兩種反向器比較，后者尺寸較小，從而減小了螺母的徑向尺寸及縮短了軸向尺寸。但這種反向器的外輪廓和螺母上的切槽尺寸精度要求較高。

The internal circulation uses reversers to realize ball circulation, and there are two types of reversers. The cylindrical convex key reverser, its cylindrical part is embedded in the nut, and its end is provided with a reverse groove 2. The reverse groove is positioned against the cylindrical cylindrical cylindrical surface and the circular key 1 at its upper end to ensure alignment with the direction of the thread raceway. The reverser of flat round insert is a general round head flat key insert. The insert is embedded in the groove of the nut, and its end is provided with a reverse groove 3, which is positioned with the outer contour of the insert. Compared with the two reversers, the latter has a smaller size, thus reducing the radial size of the nut and shortening the axial size. However, the precision of the outer contour of the reverser and the size of the groove on the nut is high.

2外循環(huán)：

2 External circulation:

外循環(huán)是滾珠在循環(huán)過程結束后通過螺母外表面的螺旋槽或插管返回絲杠螺母間重新進入循環(huán)。外循環(huán)滾珠絲杠螺母副按滾珠循環(huán)時的返回方式主要有端蓋式、插管式和螺旋槽式。

External circulation means that the ball returns to the lead screw and nut through the spiral groove or cannula on the outer surface of the nut after the circulation process. The return mode of the outer circulation ball screw nut pair according to the ball circulation mainly includes the end cover type, the intubation type and the spiral groove type.

常用外循環(huán)方式：

Common external circulation mode:

（a）端蓋式；

(a) End cover type;

（b）插管式；

(b) Intubation type;

（c）螺旋槽式是端蓋式，在螺母上加工一縱向孔，作為滾珠的回程通道，螺母兩端的蓋板上開有滾珠的回程口，滾珠由此進入回程管，形成循環(huán)。插管式，它用彎管作為返回管道，這種結構工藝性好，但是由于管道突出螺母體外，徑向尺寸較大。螺旋槽式，它是在螺母外圓上銑出螺旋槽，槽的兩端鉆出通孔并與螺紋滾道相切，形成返回通道，這種結構比插管式結構徑向尺寸小，但制造較復雜。外循環(huán)滾珠絲杠外循環(huán)結構和制造工藝簡單，使用廣泛。其缺點是滾道接縫處很難做得平滑，影響滾珠滾道的平穩(wěn)性。

(c) The spiral groove type is the end cap type. A longitudinal hole is machined on the nut as the return channel of the ball. The cover plates at both ends of the nut are provided with the return ports of the ball, from which the ball enters the return tube to form a cycle. The pipe insertion type uses the elbow as the return pipe. This structure has good technological performance, but because the pipe protrudes from the outside of the nut, the radial size is large. The spiral groove type is to mill the spiral groove on the outer circle of the nut, drill through holes at both ends of the groove and cut with the thread raceway to form a return channel. This structure is smaller in radial size than the intubation type structure, but its manufacturing is more complex. The external circulation ball screw has simple structure and manufacturing process, and is widely used. Its disadvantage is that the joint of the raceway is difficult to be smooth, which affects the stability of the ball raceway.

以上就是常用滾珠絲杠的循環(huán)方式了，希望對您有所幫助！更多相關產(chǎn)品內(nèi)容可以來我們網(wǎng)站http://www.pet998.com進行咨詢了解！

The above is the common circulation mode of ball screw. I hope it can help you! More relevant product content can be found on our website http://www.pet998.com Consult and understand!