Axle case residual stress detecting method and device
A technology of residual stress and detection method, which is applied in the direction of measuring device, measuring force, instrument, etc., can solve the problems such as difficult to realize residual stress detection of axle housing, and achieve the effect of improving test efficiency, simple operation and strong practicability
Inactive Publication Date: 2013-09-04
柳州市鑫鼎科技有限公司
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Problems solved by technology
However, the X-ray residual stress test device will produce the following problems during the test process: since the point light source emitted by the ray tube must be guaranteed to be perpendicular to the measurement surface during the test process, it is necessary to continuously adjust the axle housing with complex surfaces. The placement of the axle housing meets this requirement, but the axle housing structure is too large to move and rotate, so it is difficult to detect the residual stress of the axle housing
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[0037] Such as figure 1 As shown, the axle housing residual stress detection method of the present invention comprises the following steps:
[0038]A. The X-ray residual stress measuring head 1 rises vertically to leave a space, and the axle housing 2 rotates on its own axis, so that the position of the measuring point to be detected reaches the detection position, and then stops the rotation to keep the position of the axle housing stable;
[0039] B, the X-ray residual stress measuring head 1 vertically descends, so that the distance between the X-ray residual stress measuring head 1 and the axle housing 2 reaches within the detection distance;
[0040] C. The X-ray residual stress measuring head 1 is fed horizontally to the position of the measuring point, and the pitch adjustment is performed in the radial direction of the axle housing 2, so that the X-ray emission direction is kept perpendicular to the local surface where the measuring point of the axle housing 2 is locat...
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The invention aims to provide an axle case residual stress detecting method. X rays are used for detecting axle case residual stress in the detecting method. The detecting method comprises the steps of first making an axle case rotate in the axial direction of the axle case, and making the position of a point to be measured and needing to be detected to reach a detecting position, then adjusting a measuring head to make the distance between the measuring head and the axle case be within a detecting range, feeding the measuring head horizontally until the measuring head reaches the position of the point to be measured, adjusting the measuring head in a pitching mode to make the emitting direction of the X rays be perpendicular to the local surface where the axle case point to be measured is located, completing stress measuring of the point to be measured, feeding the measuring head horizontally, completing stress measuring of each point to be measured in the axial direction of the axle case, and repeating the steps to complete stress measuring of the whole axle case. The invention further provides an axle case residual stress detecting device which is simple in structure and convenient to operate. The method and the device can well realize detecting of residual stress of the whole surface of the axle case.
Description
technical field [0001] The invention relates to the field of stress measurement, in particular to a method and device for detecting the residual stress of an axle housing. Background technique [0002] During the manufacturing process of the axle housing, it will be affected and influenced by various processes and other factors; when these factors disappear, the above-mentioned effects and influences on some components cannot disappear completely, and some of the effects and influences remain in the Inside the axle housing, residual stress will be generated inside the axle housing. The residual stress in the compressed state will increase the fatigue life of the axle housing, but the residual stress in the tension state will reduce the fatigue life of the axle housing, so it can be seen that the existence of residual stress will have a greater impact on the fatigue life of the axle housing. Therefore, it is necessary to obtain the residual stress distribution state of the a...
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IPC IPC(8): G01L1/25
Inventor 石光林朱林陆维钊孙有平温全明李旺珍
Owner 柳州市鑫鼎科技有限公司