Stepped shaft straightness detection device and straightness detection method thereof

Abstract

The invention discloses a stepped shaft straightness detection device and a straightness detection method thereof, and belongs to the technical field of steel detection. The device comprises a three-jaw chuck which is used for fixing the end part of the stepped shaft, drives the stepped shaft to rotate around a central axis and has a self-centering function, a movable spring supporting frame whichis positioned below the other end of the stepped shaft and is used for supporting the stepped shaft, and a laser detector which is used for measuring data of the outer surface of the stepped shaft; the laser detector can measure the distance between the shaft body and the detection head under the condition that the laser detector does not make contact with the stepped shaft body, then data statistics and analysis are conducted, and then the shape and position errors of the stepped shaft are detected. The laser detector is used for measuring the straightness of the stepped shaft, the defects that a pressure head type sensor measuring method has pressure deformation and large errors, the stepped shaft cannot be automatically measured, and measuring points cannot be ensured to be on the sameaxis in the shaft body rotating process are overcome, the detection speed is high, and the precision is high; and the straightness of the stepped shaft can be measured in a full-automatic manner.

Description

technical field [0001] The invention relates to the technical field of iron and steel detection, in particular to a device for detecting the flatness of a stepped shaft and a method for detecting the flatness thereof. Background technique [0002] In the actual production process of the stepped shaft, there are often different degrees of bending deformation. The straightness of the stepped shaft has a great influence on its strength and life, so it needs to be adjusted to reduce the deformation. In order to provide production equipment process adjustment The required data needs to measure the degree of bending deformation of the stepped shaft, that is, the measurement of straightness. The central axis of the stepped shaft belongs to the central element and cannot be directly measured, while its generatrix belongs to the actual element and can be directly measured. [0003] At present, there are few devices for measuring the straightness of stepped shafts. For short stepped s...

AI Technical Summary

Problems solved by technology

[0003] At present, there are few devices for measuring the straightness of stepped shafts. For short stepped shafts, it is generally measured manually, with slow measurement speed and low measurement accuracy. It is difficult to measure the straightness of longer stepped shafts. , the existing pressure head sensor measurement method has the disadvantages of pressure deformation and large error, and it cannot realize automatic measurement of the stepped shaft, and the measurement point cannot be guaranteed to be on the same axis during the rotation of the shaft body. Therefore, it is necessary to design a method that can quickly and A device that accurately measures the straightness of the stepped shaft, improves the measurement accuracy and speed, and realizes fully automated measurement

Images