高精度设备一般是滚珠丝杠装置，tbi滚珠丝杆具有灵敏度高、精度高等诸多优点，已成为许多设备的。tbi滚珠丝杆在机器运行时，通常配有预压后间隙，但如果没有在正确的时间安装滚珠丝杠，则无法体现其高精度和长寿命。

High precision equipment is generally ball screw devices, and tbi ball screws have many advantages such as high sensitivity and precision, and have become the preferred choice for many devices. When the tbi ball screw is running on the machine, it is usually equipped with pre pressing to eliminate the clearance, but if the ball screw is not installed at the correct time, it cannot reflect its high precision and long service life.

滚珠丝杆存在断裂三大难题

Three major problems of ball screw fracture

一、回流管凹陷或断裂

1、 Recessed or broken return pipe

螺母的过动或回油管的撞击会导致回油管凹陷或断裂，从而阻碍球的循环路径，导致球的滑动而不是正常滚动，终导致回油管断裂。

Excessive movement of the nut or impact of the return pipe can cause the return pipe to sink or break, hindering the circulation path of the ball and causing it to slide instead of rolling normally, ultimately leading to the return pipe breaking.

二、tbi滚珠丝杆肩部被折断

2、 TBI ball screw shoulder broken

设计不当:螺杆肩部应避免尖角设计，以降低局部应力集中。

Improper design: The shoulder of the screw should avoid sharp angle design to reduce local stress concentration.

螺杆轴颈弯曲:锁紧螺母的轴承面与v形齿轴垂直度差，或锁紧螺母面在两个对应方向平行度差，会导致螺杆肩弯曲或开裂;因此，锁紧螺母前后，螺杆肩的偏差不应超过0.01mm。

Bending of screw shaft neck: The difference in perpendicularity between the bearing surface of the locking nut and the V-shaped gear shaft, or the difference in parallelism between the locking nut surface in two corresponding directions, can cause the screw shoulder to bend or crack; Therefore, the deviation of the screw shoulder before and after locking the nut should not exceed 0.01mm.

径向力或重复应力(脉动应力):安装时由于偏心螺杆产生异常交变剪应力和滚珠丝杠早期损坏。

Radial force or repetitive stress (pulsating stress): Abnormal alternating shear stress and early damage to the ball screw caused by eccentric screw during installation.

三、钢球破碎

3、 Steel ball crushing

钢球是常用的材料是铬钼钢，tbi滚珠丝杆在有或没有润滑作用时温升差异明显，这种温升可能会导致钢球断裂或损坏，从而造成螺母或螺珠槽的损坏。因此，在设计过程中必须考虑润滑油的补充。如果不能使用自动润滑系统，则必须在维修手册中包括润滑油的补充计划。

The most commonly used material for steel balls is chromium molybdenum steel. The temperature rise of tbi ball screws varies significantly with or without lubrication, and this temperature rise may cause the steel balls to break or be damaged, resulting in damage to nuts or ball grooves. Therefore, the supplementation of lubricating oil must be considered in the design process. If the automatic lubrication system cannot be used, a lubrication oil replenishment plan must be included in the maintenance manual.

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Thank you for reading. The source of this article is Guide Screw. For more information and questions, please click: http://www.jngongrun.com We will continue to work hard to provide you with services. Thank you for your support!