Uniform rotation and axial force control method for bearing axial protrusion detection

Abstract

Provided is a constant-speed rotating and axial force control method for detecting axial protruding amount of a bearing. A detected bearing (9) is installed on a mandrel (10), a computer (7) sends an instruction to a controller (6) to start a brushless motor (5) so as to achieve constant-speed rotation of a worm (4), a worm gear (3), a spindle (12) and the mandrel (10) and then sends an instruction to enable a push rod (14) of a cylinder or a hydraulic cylinder (1) to move towards the right and act on a pressure sensor (11) through the spindle effect, an axial pressure signal produced by the pressure sensor is timely fed back to the computer to be compared with allowable axial force Fa of the detected bearing, and the protruding amount of the detected bearing cannot be detected until the axial pressure signal is equal to the allowable axial force Fa of the detected bearing. The constant-speed rotating and axial force control method for detecting the axial protruding amount of the bearing can achieve constant-speed rotation and exert the axial force, is very important for achieving of protruding amount detection of the detected bearing, is obvious in produced effect and effectively improves the detection accuracy of the axial protruding amount of the detected bearing.

Description

technical field [0001] The invention belongs to the technical field of bearing detection, and in particular relates to a uniform rotation and axial force control method for detecting the axial protrusion of a bearing. Background technique [0002] The bearing consists of outer ring, inner ring and rolling elements. Usually the other end of the outer ring is fixed and one end of the inner ring is positioned and rotates at a constant speed. Under constant rotation, a permissible axial force Fa is applied to one end of the inner ring. The other end surface of the inner ring rotating at a constant speed with the axial force Fa and the limit of the rolling element will produce an axial displacement relative to the other end surface of the outer ring, and the arithmetic mean value of the axial displacement is called the axial protrusion of the bearing. The amount of axial protrusion affects the rotation accuracy of the bearing. When the axial protrusion is large, the bearing will ...

AI Technical Summary

Problems solved by technology

[0004] 1. An axial force is applied to one end surface of the inner ring through a pneumatic cylinder or a hydraulic cylinder. The axial force cannot be read intuitively and whether it meets the allowable axial force Fa affects the accuracy of the detection of the axial protrusion of the bearing. sex;

[0005] 2. The inner ring is driven to rotate by manually rotating the mandrel. The speed of the manual rotating mandrel is not in a uniform rotation state, and the stability of the manual rotating mandrel is poor, which also affects the accuracy of the detection of the axial protrusion of the bearing.

[0006] The control method that combines the uniform rotation and axial force to detect the axial protrusion of the bearing has not been reported so far

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