常用的循环方式有两种：内循环和外循环。导轨丝杠厂家提醒，始终与丝杠保持接触的称为内循环；滚珠在循环过程中有时与丝杠脱离接触的称为外循环。滚珠每一个循环闭路称为列，每个滚珠循环闭路内所含导程数称为圈数。内循环滚珠丝杠副的每个螺母有2列、3列、4列、5列等几种，每列只有一圈；外循环每列有1.5圈、2.5圈和3.5圈等几种。

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内循环：

1 Internal circulation:

内循环均采用反向器实现滚珠循环，反向器有两种类型。圆柱凸键反向器，它的圆柱部分嵌入螺母内，端部开有反向槽2。反向槽靠圆柱外圆面及其上端的圆键1定位，以保证对准螺纹滚道方向。扁圆镶块反向器，反向器为一般圆头平键镶块，镶块嵌入螺母的切槽中，其端部开有反向槽3，用镶块的外轮廓定位。两种反向器比较，后者尺寸较小，从而减小了螺母的径向尺寸及缩短了轴向尺寸。但这种反向器的外轮廓和螺母上的切槽尺寸精度要求较高。

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外循环：

2 External circulation:

外循环是滚珠在循环过程结束后通过螺母外表面的螺旋槽或插管返回丝杠螺母间重新进入循环。外循环滚珠丝杠螺母副按滚珠循环时的返回方式主要有端盖式、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.

常用外循环方式：

Common external circulation mode:

（a）端盖式；

(a) End cover type;

（b）插管式；

(b) Intubation type;

（c）螺旋槽式是端盖式，在螺母上加工一纵向孔，作为滚珠的回程通道，螺母两端的盖板上开有滚珠的回程口，滚珠由此进入回程管，形成循环。插管式，它用弯管作为返回管道，这种结构工艺性好，但是由于管道突出螺母体外，径向尺寸较大。螺旋槽式，它是在螺母外圆上铣出螺旋槽，槽的两端钻出通孔并与螺纹滚道相切，形成返回通道，这种结构比插管式结构径向尺寸小，但制造较复杂。外循环滚珠丝杠外循环结构和制造工艺简单，使用广泛。其缺点是滚道接缝处很难做得平滑，影响滚珠滚道的平稳性。

(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.

以上就是常用滚珠丝杠的循环方式了，希望对您有所帮助！更多相关产品内容可以来我们网站http://www.jngongrun.com进行咨询了解！

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.jngongrun.com Consult and understand!