A lever-type continuous measurement method for the bending deformation axis of cylindrical parts

Abstract

The invention provides a lever type continuous measuring method for the bending deformation axis of a cylindrical part. The method is mainly composed of a cylindrical shaft to be measured, a lever mechanism, a displacement sensor and a lead screw guide rail; the cylindrical shaft to be measured rotates at a constant speed; the rotation center of the lever mechanism and the displacement sensor arefixed on the lead screw guide rail parallel to the axis of the cylindrical shaft to be measured; the lever mechanism is perpendicular to the lead screw guide rail; one end of the lever mechanism contacts with the surface of the cylindrical shaft to be measured; the other end of the lever mechanism contacts with a displacement sensor probe; the fluctuation of the eccentric change of the cylindricalshaft to be measured can be transmitted to the displacement sensor through the lever mechanism; and signals are algorithmically processed, so that the eccentric quantity and eccentric direction of each section of the cylinder shaft to be measured can be obtained, and therefore, the spatial curve of an actual axis is drawn. With the method adopted, direct contact between the sensor probe and the device to be measured is avoided, the continuous measurement of the axis of the cylindrical component can be realized, and the three-dimensional spatial curve of the axis of the component to be measured can be obtained more accurately. The method has the advantages of simple structure, reliable principle and high precision.

Description

technical field [0001] The invention belongs to the field of part axis measurement, in particular to a lever-type continuous measurement method for the bending deformation axis of cylindrical parts. Background technique [0002] Cylindrical parts, as parts for rotating motion, are one of the most commonly used parts in industrial production, such as various transmission shafts, main shafts, motors and rotors of steam turbines. Due to the limitation of manufacturing level, uneven heating, uneven cooling and unreasonable reduction control of steel during hot rolling will lead to bending deformation of the axis of the production part and affect the straightness of the part. Straightness measurement is the most basic and important item in the field of geometric measurement. Together with dimensional accuracy, roundness and roughness, it is called the four major factors affecting product quality, and it is of great significance to the evaluation of shafts and other parts. [000...

AI Technical Summary

Problems solved by technology

Non-contact measurement is easily disturbed by environmental factors such as light and air, and has poor anti-interference ability and poor stability, which will affect the accuracy of the measurement signal

In the direct measurement method in contact measurement, factors such as direct contact and frequent friction between the sensor probe and the workpiece surface, and partial protrusions on the workpiece surface will affect the measurement results

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