Axial nut loading mechanism for ball screen assemblies

Abstract

The invention discloses an axial nut loading mechanism for ball screen assemblies, in particular to a bidirectional loading mechanism. The axial nut loading mechanism for ball screen assemblies mainly comprises a driving component, a loading component, a limiting component, a measuring component and a data processing module and is characterized in that a driving motor drives a nut of a serrated screw assembly to rotate by transmission shaft and gear drive; the nut tends to traverse along a screw shaft in the absence of external force; after translation of the nut of the serrated screw assembly is resisted, rotation of the nut is converted into linear motion of the screw shaft so that loading force is generated; a sensor is connected to a loading end of the screw shaft to measure the magnitude of the loading force in real time. The axial nut loading mechanism for ball screen assemblies is compact in inside structure, high in accuracy, safe and reliable with loading force up to 10t, small in axial size, convenient to install, low in cost and easy for processing.

Description

technical field [0001] The invention relates to the technical field of loading mechanisms, in particular to an axial loading mechanism for a ball screw auxiliary nut. Background technique [0002] A ball screw pair is a mechanical component consisting of a ball screw, balls and ball nuts, whose main function is to convert rotational motion into linear motion, or torque into axial repetitive force. It can achieve very high transmission and positioning accuracy, and is widely used in the feed transmission system of various precision machine tools. It is a widely used and demanding accessory and basic part in the machinery industry. In order to test the reliability of the ball screw pair, it is necessary to provide a large axial load to the nut of the ball screw pair. The existing loading methods include hydraulic loading, torque loading, floating block loading and many other methods. However, there are certain deficiencies in the ball screw pair. [0003] Chinese utility mod...

AI Technical Summary

Problems solved by technology

The hydraulic loading mechanism is suitable for loading a mechanical or experimental device with a relatively simple structure and a small required load. If it is used for a mechanical or experimental device with a complex structure and a large required load, the following problems will occur: First, It is necessary to consider the arrangement of the oil pipes, which has caused some troubles to the structural design of the device; second, when the load required to be applied is large, the hydraulic cylinders, hydraulic valves, etc. are prone to oil leakage after working for a period of time, thus affecting the device. The working environment is difficult to clean; third, the long-term reciprocating movement is likely to cause the rupture of the oil pipe

[0005] In short, there are few mechanisms in the prior art that use screw loading, and most of them use hydraulic pressure, torque and other loading methods, which have defects such as small loading force and inconvenient installation, and are not suitable for longitudinal loading of ball screw pairs.

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