AGV robots are a type of robot design that tends towards intelligence and have become popular in the logistics and power industries. An important component in AGV robots is the precision ball screw, which belongs to a type of precision mechanized product. The AGV robot screw is just a small part, but it is an integral part of AGV robot manufacturing.

The core component for AGV with lifting function to achieve lifting is the ball screw. The characteristic of AGV lifting screw produced by Science and Technology Precision is that the diameter of the screw is very large, with an outer diameter of 270mm, and it is a thin-walled hollow screw, which is also the processing difficulty of this type of ball screw. The lifting weight of the screw can range from 300KG to 2000KG or even higher, and can be customized according to the actual needs of customers. The advantage of this AGV robot screw is that it has a simple and easy to install structure, which saves a lot of space. The main advantages are high transmission efficiency, low noise, stable and smooth operation of the screw, making it an ideal structure for many AGV robot lifting modules at home and abroad.

AGV robot screwHow to maintain it? Firstly, start with these four points

1、 Elimination of axial clearance

After disassembling and assembling the AGV robot screw, in order to ensure the accuracy of reverse transmission and axial stiffness, it is necessary to eliminate axial clearance. The method of eliminating clearance for the double nut ball screw pair is to use the relative axial displacement of the two nuts to make the balls in the two ball nuts tightly adhere to the two opposite sides of the threaded raceway. When using this method to pre tighten and eliminate axial clearance, it should be noted that the pre tightening force should not be too large, otherwise it will increase the no-load torque and reduce the transmission efficiency.

2、 Lubrication of AGV robot screw

Lubricating grease and lubricating oil can be used for lubrication. Lubricating grease is generally added to the threaded raceway and the housing space where the nut is installed, while lubricating oil is injected into the space of the nut through the oil hole on the housing. The lubricating grease on the robot screw should be replaced every six months, the old lubricating grease on the screw should be cleaned, and new lubricating grease should be applied. Ball screw pairs lubricated with lubricating oil can be refilled before each operation.

3、 Protection of AGV robot screw

The AGV robot screw should avoid dust or chips, and be closed, such as using spiral spring steel strip sleeve, telescopic sleeve or folding sleeve. When installing, connect one end of the protective cover to the end face of the ball nut and fix the other end to the support seat of the ball screw. If the robot screw is in a concealed position, a sealing ring can be used for protection by installing the sealing ring at both ends of the nut. Contact sealing rings have good dust prevention effects, but due to the contact pressure, the friction torque slightly increases. Non contact sealing can avoid friction torque, but the dust prevention effect is slightly worse.

4、 Regularly inspect the supporting bearings