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Horizontal hole detector

A detector, horizontal technology, applied in the field of horizontal hole detectors, can solve the problems that the center will drift, affect the detection accuracy of hole straightness, etc., achieve the effect of low instrument center, convenient operation, and improve detection accuracy

Active Publication Date: 2022-03-08
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the manufacturing quality and precision of the light emitter or sensor itself are not high, the light spot is stable, and its center will drift, thus affecting the detection accuracy of hole straightness

Method used

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  • Horizontal hole detector

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0026] Implementation mode 1: the minimum containment area method.

Embodiment approach 2

[0027] Embodiment 2: least squares method.

Embodiment approach 3

[0028] Embodiment 3: two-end point connection method.

[0029] The specific implementation manners in which the light is directed to the light receiver are as follows:

[0030] Embodiment 1: The light is emitted from the outside of the hole to the light receiver.

[0031] Embodiment 2: The light is emitted from the inside of the hole to the light receiver. The detection head is provided with a through hole, and the light passes through the through hole.

[0032] Embodiment 3: The light is emitted from the inside of the hole to the light receiving device. There is a gap between the probe head and the hole wall, and the light passes through said gap.

[0033] The specific implementations related to the swing of the detection rod are:

[0034] Embodiment 1: A square cavity is set, the end of the detection rod is in contact with the square cavity, and there are two rotational degrees of freedom in the square cavity.

[0035] Embodiment 2: using a ball pair, such as a ball joi...

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Abstract

The invention belongs to the field of mechanical manufacturing, and in particular relates to a horizontal hole detector, which detects errors such as hole straightness, verticality, parallelism, and inclination of the hole relative to its positioning reference. The instrument includes guiding reference, driving device, detecting device, optical device and so on. The workpiece with holes or the detection device can move relative to the guide reference, and the included angle between the moving direction and the horizontal plane is less than or equal to 45 degrees. The detection device can swing around the fulcrum in space, and one end of it is in contact with the hole wall. The light passes through the outside or inside of the hole, and the light and spot change with the swing of the detection device, and the errors such as the straightness of the hole are calculated from the spot position information. When the length of the light is greater than the length of the workpiece, the error can be amplified and displayed; in one detection, the distance between the light transmitter and the light receiver is constant, so the detection accuracy is high. The instrument is placed horizontally with a low center, good stability and easy operation. Can be used for detection of large and small diameter holes.

Description

technical field [0001] The invention belongs to the field of hole processing and detection in mechanical manufacturing, and in particular relates to a horizontal hole detector. Background technique [0002] A common method for detecting hole straightness errors in machinery manufacturing plants is: comparison scheme of wall thickness measurement at both ends. That is, after the processing of the part is completed, the wall thickness at both ends of the part is detected and compared with a vernier caliper or an ultrasonic thickness gauge, and the hole straightness error is judged according to the difference between the wall thicknesses at both ends. This option is a qualitative judgment. Researchers have also proposed a variety of schemes using laser and other optical technologies to detect the straightness error of deep holes. For example, someone proposed an optical detection method for the straightness error of the gun barrel, which uses the change of the spot position to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/27G01B11/26
CPCG01B11/27G01B11/26
Inventor 于大国李艳辉赵志勇李嘉峰
Owner ZHONGBEI UNIV