Variable pitch screw company online consultation "Sutong Machinery"

2022年08月09日

How to detect and repair screw rods in Sutong Machinery

The faults caused by ball screws are diverse and have no fixed pattern. Some faults are gradual and require a development process, which becomes increasingly severe with the increase of usage time; Sometimes it is a sudden malfunction, usually without obvious signs, but it occurs suddenly. This type of malfunction is caused by various unfavorable factors and the combined action of the outside world. So determining the true cause of the malfunction through correct detection is a prerequisite for fast and accurate maintenance. The layout plan and scheme of the trapezoidal screw whirlwind milling process, which involves completing threads and knurling in one go, have good promotion and application costs for products with low cost and low precision requirements.


Problems encountered in the use of ball screws

1. No or insufficient preloading: When the ball screw without preloading is placed vertically, the nut will rotate and slide due to its own weight. The screw without preloading will have a considerable back clearance, so it can only be used for machines with small operating resistance, but the main basis is that its positioning accuracy is not required too much. When the ball screw leaves the factory, it will give the correct preloading amount in different application places, and adjust the preloading before leaving the factory: therefore, please specify the operation of the equipment before you order the ball screw.

2. Torsion displacement is too large: the smaller the screw, the higher the rigidity, and the limit of slenderness ratio is generally below 60. If the slenderness ratio is too large, the screw will sag due to its own weight. If the ball screw is only supported on the side. This type of design has weak rigidity and should be avoided as much as possible.

3. Improper selection of bearings: Usually, ball screws must be paired with bevel bearings. Especially bearings designed with high claw force angles are a better choice; When the ball screw is subjected to axial load, a typical deep groove roller bearing will produce a certain amount of axial backlash. Therefore, deep groove ball bearings are not suitable for this.


How important is a reliable screw manufacturer to enterprises

For a large machinery enterprise, in the increasingly competitive market environment, it is necessary to enable the enterprise to develop. We must first strictly control the quality of the product. Quality is like the source of life for a manufacturer. So, how to ensure that the products produced by our company can meet the quality standards requires a lot of effort. Just like transmission, in order to ensure that the ball screw produced by our company can satisfy customers in terms of quality, we have provided strict training to the staff in each production link and position of the ball screw. To ensure that customers can purchase the screws produced by the company with confidence.