Lead screw fracture analysis.

1. Bearing seat quality issues

Bearing seat quality problems are one of the common causes of lead screw breakage. In order to avoid this problem, we need to pay attention to the following aspects:

* Check the parallelism of the bearing center line to the bottom surface of the home decoration to ensure that it meets the requirements.

*Detect the runout of the screw shaft end and the motor shaft end to ensure that they are concentric to prevent the screw from breaking at the shaft end.

*When tightening the lock nut, avoid excessive force to prevent breakage at the shaft end.

The accuracy and quality of the screw are also important factors leading to breakage. In order to ensure the stability and durability of the screw, we need to pay attention to the following aspects:

* Ensure the concentricity of the screw itself to improve its stability and accuracy.

*Choose ground screws rather than rolled screws because the shape accuracy of ground screws is usually higher.

3. High speed and no bearing support
When the screw rotates at a high speed and there is no bearing support at the other end, it is also easy to cause the screw to break. To solve this problem, we can take the following measures:

* Replace the screw with a larger guide to reduce the rotation speed.
*Add bearing support at the other end of the screw to improve its stability.
4. The center of the nut seat bearing position is not parallel to the guide rail.
If the center of the nut seat bearing position is not parallel to the guide rail, it may also cause the screw to break. In order to detect this problem, we can take the following steps:

* After installing the screw and ensuring that all connections are firm, push the worktable in reverse without connecting the motor.

*If the push is smooth at both extremes, it means there is no problem; if the middle is smooth but the bearing seat is not smooth, it may be a comprehensive assembly problem, including guide rail straightness, bearing seat quality, screw quality, assembly quality, etc.

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