Ball screw

Abstract

The invention relates to a ball screw. The ball screw comprises a screw body, a nut and sealing rings, wherein the middle of the screw body is sleeved with the nut; the sealing rings are symmetricallyarranged at the left end and the right end of the nut; thread grooves are formed in the outer wall of the screw body and the inner wall of the nut; balls are installed in the thread grooves formed inthe inner wall of the nut in a rolling manner; the screw body comprises a main body, an extension part, a connecting part and an end cover; the connecting part comprises a base plate, guide columns,connecting plates, extrusion blocks, and a conical screw rod; and the nut comprises a shell, oil through grooves, oil filling tubes and oil outlet tubes. The ball screw is composed of spliced structures with smooth outer surfaces, the length of the screw body can be increased according to actual needs, the purpose of intermittently lubricating the surface of the screw body can be achieved by replacing a manual mode, and the workload of workers is eased; and in addition, two rubber rings arranged at an interval can effectively reduce sliding friction between the rubber rings and the surface ofthe screw body while achieving dustproof and antifouling effects.

Description

technical field [0001] The invention relates to the field of hardware workpieces, in particular to a ball screw. Background technique [0002] Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repeated force. It also has high precision, reversibility and high precision. Features of efficiency. Due to its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. [0003] The existing ball screw has the following problems in actual use: [0004] a. When the working stroke of the lead screw is long, in order to facilitate the production and save costs, it is usually chosen to use multiple short lead screws to splice into a long lead screw through the insert, and a completely smooth surface cannot be formed between the insert and the outer wall of the lead screw. Curved surfa...

AI Technical Summary

Problems solved by technology

[0004] a. When the working stroke of the lead screw is long, in order to facilitate the production and save costs, it is usually chosen to use multiple short lead screws to splice into a long lead screw through the insert, and a completely smooth surface cannot be formed between the insert and the outer wall of the lead screw. Curved surfaces, which hinder the movement of the nut to a certain extent;

[0005] b. In order to prolong the service life and smooth operation of the lead screw, it needs to be lubricated regularly. The lubrication methods of the lead screw include oil lubrication and grease lubrication. The effect of lubricating oil lubrication is more ideal, but it is added manually When using lubricating oil, it is impossible to accurately grasp the amount of lubricating oil added, so it is easy to cause leakage due to excessive lubricating oil addition, which not only causes waste, but also pollutes the surface of the screw

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