Device for detecting complex profile displacement in narrow and small space, and method for detecting displacement

A technology with complex shapes and narrow spaces, which is applied in the field of detection of misalignment, can solve the problems of light incident angle limitation, sample paste cannot be reused, laser scanning cost is high, etc., achieve low manufacturing cost, realize online measurement, and facilitate workers The effect of the operation

Active Publication Date: 2019-09-17
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Several methods have their own advantages and disadvantages. The cost of laser scanning is high, and the angle of incidence of light is limited; the method of visual inspection or feeler gauge comparison has la

Method used

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  • Device for detecting complex profile displacement in narrow and small space, and method for detecting displacement
  • Device for detecting complex profile displacement in narrow and small space, and method for detecting displacement
  • Device for detecting complex profile displacement in narrow and small space, and method for detecting displacement

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as image 3 As shown, the second part 9 needs to be installed in the hole on the first part 8, and it is required to detect the displacement of the mounting surface of the second part 9 on the part one 8 relative to the arc surface of the first part 8. According to the characteristics of part 18, an end face 12 and an arc surface 13 are designed on the body 1 as the positioning surface. Because the displacement of the parts in the same axial section is the same, there is no need to limit the position along the arc surface when the detection device is used. turn.

[0050]For the installation structure of part 1 and part 2, the lower half has a first measuring end and a second measuring end, and there is a gap between the first measuring end and the second measuring end. Due to the narrow measurement space, an irregularly shaped body 1 is designed according to the measurement space, and through holes are opened on the first measuring end and the second measuring end...

Embodiment 2

[0053] refer to image 3 To illustrate, there is no part 2 9, and what is required to be detected is the concave and convex amount of the arc surface of part 1 8 itself. At this time, the measured profile and the misaligned profile are the profile of a component. The measuring terminal can be designed as one or more.

[0054] When measuring, the body 1 and the part 18 are positioned well, and the lead-out pin 3 and the L-shaped measuring pin 4 are pressed down by hand, and the lead-out pin 3 and the L-shaped measuring pin 4 are in contact with the profile of the part 18, and the clamping screw 6 is tightened , then take out the detection device, observe the rear end surface of the lead-out needle 3 and the L-shaped measuring needle 4, or judge with the help of a tool, if the end surface of the lead-out needle 3 is between the step surface 11 of the L-shaped measuring needle 4 or is aligned with any end surface of the step surface 11 If it is flat, the amount of misalignment i...

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Abstract

The invention discloses a device for detecting complex profile displacement in a narrow and small space. The device comprises a body, a through hole is formed on the body, multiple groups of surveying pins and multiple alternate pins are arranged in the through hole, and the alternate pins are arranged between multiple groups of surveying pins; each group of surveying pins comprises a lead-out pin and an L-shaped surveying pin, a front end of one pin contacts with a detected profile, and the front end of the other pin contacts with a displaced profile; a rear end of the lead-out pin is a plane, the rear end of the lead-out pin is a step surface, and the distance between the step surfaces is the preset displacement; in the surveying, the lead-out pin and the L-shaped surveying pin are pressed by using hand, the displacement between the complex profiles is transferred to the rear end surfaces of the lead-out pin and the L-shaped surveying pin, and whether the detected displacement is qualified is judged by observing the step surface locations of the lead-out pin and the L-shaped surveying pin. The judgment principle is simple, the process is simple, a technical requirement on the worker is low, the worker operation is convenient, and the working efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of misalignment detection devices, and in particular relates to a misalignment detection device for complex profiles in a narrow space and a method for detecting misalignment. Background technique [0002] At present, for the detection of misalignment between complex profiles in a narrow space, laser scanning can be used for higher precision, visual inspection or feeler gauge comparison can be used for low precision, and proofing paste and slice projection can also be used. method. Several methods have their own advantages and disadvantages. The cost of laser scanning is high, and the angle of incidence of light is limited; the method of visual inspection or feeler gauge comparison has large errors, and the measurement cannot be performed if the space is too small or the eyes are blocked; the method of slice projection of proofing paste must have Projector, and the sample paste cannot be reused. Contents ...

Claims

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Application Information

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IPC IPC(8): G01B5/00
CPCG01B5/00
Inventor 王荣郭霞孔令姗李莎王素娟苏琳牛阿妮罗雄狮
Owner AECC AVIATION POWER CO LTD
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