CN217655038U

CN217655038U - Device for detecting inner hole defects of shaft sleeve type parts

Info

Publication number: CN217655038U
Application number: CN202220856450.0U
Authority: CN
Inventors: 王小英; 杨晓萌; 邹旭阳
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-10-25
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses a device for axle sleeve part hole defect detection mainly includes base, vision measuring module and conical surface reflection module. The vision measurement module consists of a CCD camera which is positioned below the workbench and fixed on the device base, a lens fixed at the front end of the camera, and an annular LED light source which is fixed on the base and positioned below the workbench; the conical surface reflection module consists of a linear module fixed at the upper end of the device and a conical surface reflection mirror fixed on a linear module sliding block. The inner hole defect detection device for the shaft sleeve type parts is flexible to adjust, can detect the inner wall defects of the shaft sleeve type parts with different inner diameters and lengths, and is high in detection efficiency.

Description

Device for detecting inner hole defects of shaft sleeve type parts

Technical Field

The utility model belongs to the technical field of the defect detection equipment is relevant, concretely relates to a device for axle sleeve part hole defect automatic checkout.

Background

The inner hole is widely arranged in various shaft sleeve type parts and plays an important role in the working process of the parts. In order to ensure the normal use of the part, the part has better reliability, and the defect detection of the inner hole of the part is required to avoid the influence on the quality and the service life of the part due to the defects of the inner hole in the aspects of size, surface structure and the like. The traditional detection method is mostly manual detection, which is a great challenge to the experience and technology of workers, has certain difficulty and uncertainty, and is low in efficiency and large in workload.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device for axle sleeve part hole defect detects to solve some problems that face about hole defect detection at present.

In order to achieve the above object, the utility model provides a following technical scheme: a device for detecting defects of inner holes of shaft sleeve parts comprises a base, a vision measuring module, a transparent object stage, a conical surface reflecting module and a linear module. A vision measuring module for collecting the inner wall image of the part to be measured is arranged above the base and consists of a CCD camera and an annular LED light source above the CCD camera; a transparent object stage for bearing a workpiece is arranged above the annular LED light source; and a conical surface reflection module for reflecting the surface of the inner hole of the part to be measured is arranged above the transparent object stage and consists of a linear module fixed at the upper end of the device and a conical surface reflector fixed on a linear module sliding block.

Preferably, the conical reflector is arranged on the annular fixture in a manner of interference fit of the shaft hole, and the annular fixture is fixed on the linear module sliding block and is driven by the linear module sliding block to freely move up and down so as to obtain the surface image of the inner hole of the shaft sleeve type part.

Preferably, a conical reflector is arranged above the transparent objective table, an annular LED light source is arranged below the transparent objective table, and the brightness of the device can be adjusted as required.

Preferably, the base comprises a vertical rod, five orthogonal support fixing frames are mounted on the vertical rod and used for fixing other components, and three degrees of freedom are flexibly adjusted.

Preferably, the left arm and the right arm of the annular LED fixing clamp are fixed in a threaded connection mode.

Compared with the prior art, the utility model provides a device for axle sleeve part hole defect detection possesses following beneficial effect: the utility model discloses axle sleeve part hole defect detection device compact structure adjusts nimble convenience, through the luminance of adjustable annular LED light source and the position of five orthogonal support post mounts, can realize the axle sleeve part inner wall defect detection of different internal diameters and length, and detection efficiency is high.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the example serve to explain the invention without limiting the invention in which:

fig. 1 is a schematic structural view of a device for detecting inner hole defects of shaft sleeve parts according to the present invention;

fig. 2 is a left view structure diagram of the detecting device provided by the present invention;

FIG. 3 is a schematic view of the apparatus for inspecting parts;

fig. 4 shows the results of the previous tests and experiments.

In the figure: 1. a base; 2. a vision measurement module; 3. a transparent stage; 4. a linear module slider; 5. a linear module guide rail; 6. a conical surface reflection module; 7. a workpiece to be tested; 8. an annular LED light source; 9. a CCD camera.

Detailed Description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, other embodiments obtained by a person of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a device for axle sleeve part hole defect detection, includes base 1, vision measuring module 2, transparent objective table 3, conical surface reflection module 6, sharp module slider 4, sharp module guide rail 5. A vision measuring module 2 for collecting the inner wall image of the part to be measured is arranged above the base 1 and consists of a CCD camera 9 and an annular LED light source 8 above the CCD camera 9; a transparent objective table 3 for bearing a workpiece is arranged above the annular LED light source; and a conical surface reflection module for reflecting the surface of the inner hole of the part to be measured is arranged above the transparent object stage 3 and consists of a linear module fixed at the upper end of the device and a conical surface reflector fixed on a linear module sliding block 4.

In order to support and flexibly adjust the device, five orthogonal support fixing frames are distributed on the vertical rods of the base 1, and the purpose of detecting shaft sleeve parts with different lengths is achieved by adjusting the vertical distance between the orthogonal support fixing frames.

In order to carry out detection work, the linear module is adopted to drive the conical surface reflection module 6 to move in the vertical direction. The linear module sliding block 4 is fixed on the vertical rod of the base, and the linear module sliding block 4 moves in a specified direction and at a specified speed by taking the linear module guide rail 5 as a guide, so that the conical surface reflection module 6 fixed on the linear module sliding block is driven to vertically move, the scanning is carried out in the detected workpiece 7, and the detection purpose is achieved.

In order to adapt to CCD cameras with different diameters, the CCD camera clamp is composed of a screw rod and nut mechanism. The nut can be regarded as a sliding block and freely slides on the clamp base, so that the CCD camera is driven to move left and right to ensure that the optical system is positioned on the same straight line.

The utility model discloses an application principle and work flow: the utility model discloses after appointed experiment place is installed, utilize the data line to be connected to the controller with the motor on, be connected to the computer with CCD camera 9 simultaneously to switch on annular LED light source 8's power, accomplish above-mentioned operation after, the device can come into operation. A detector places a workpiece on a transparent objective table and adjusts each part of an optical system to enable the centers of the parts to be positioned on the same straight line; then the linear module sliding block 4 works to drive the conical surface reflection module 6 to vertically move for detection, and meanwhile, the CCD camera 9 collects the image of the inner wall of the detected workpiece 7 through the conical surface reflection mirror and stores the image on a computer.

The utility model discloses having experimented and tested, the result of use accords with expectation, and the experiment test result is as shown in figure 4.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A device for detecting defects of inner holes of shaft sleeve type parts is characterized by mainly comprising a base (1), a vision measuring module (2), a transparent object stage (3), a conical surface reflection module (6), a linear module slider (4) and a linear module guide rail (5), wherein the vision measuring module (2) for collecting images of the inner wall of a part to be detected is arranged above the base (1) and consists of a CCD camera (9) and an annular LED light source (8) above the CCD camera (9); a transparent object stage (3) for bearing a workpiece is arranged above the annular LED light source; and a conical surface reflection module (6) for reflecting the inner wall surface of the measured part is arranged above the transparent object stage (3), and consists of a linear module fixed at the upper end of the device and a conical surface reflector fixed on a linear module sliding block (4).

2. The device for detecting the defects of the inner hole of the shaft sleeve part as claimed in claim 1, wherein the conical surface reflector is mounted on the fixture in a manner of interference fit of the shaft hole, and the conical surface reflector can freely move up and down under the driving of the linear module slider (4) to obtain the surface image of the inner hole of the shaft sleeve part.

3. The device for detecting the defects of the inner hole of the shaft sleeve type part as claimed in claim 1, wherein two ends of the linear module guide rail (5) are connected with the bracket thereof in a threaded connection mode.

4. The device for detecting the inner hole defect of the shaft sleeve part as claimed in claim 1, wherein the conical reflector clamp in the conical reflector module is fixed on the side surface of the linear module sliding block (4) in a threaded connection mode.