CN215599027U - Crack detection device for chromium coating layer on excircle of piston ring - Google Patents
Crack detection device for chromium coating layer on excircle of piston ring Download PDFInfo
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- CN215599027U CN215599027U CN202122011749.4U CN202122011749U CN215599027U CN 215599027 U CN215599027 U CN 215599027U CN 202122011749 U CN202122011749 U CN 202122011749U CN 215599027 U CN215599027 U CN 215599027U
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- piston ring
- chromium coating
- support
- rotating sleeve
- horizontal microscope
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Abstract
The utility model discloses a crack detection device for a chromium coating on the excircle of a piston ring, which comprises a movable sample stage, a horizontal microscope and a display, wherein the horizontal microscope comprises an objective lens, a rotating sleeve and a support, one end of the objective lens is arranged on the rotating sleeve, an LED (light-emitting diode) lamp source is arranged on the rotating sleeve, the support is connected with the rotating sleeve, a hand wheel for driving the horizontal microscope to adjust the focal length is arranged on the support, and the horizontal microscope is in signal connection with a display screen. The utility model has the advantages of large visual field of a stereomicroscope, high depth of field and high resolution of a metallographic microscope, meets the requirement of large visual field observation of shallow cracks, adopts a horizontal microscope, realizes the lying rotation circumferential detection of the piston ring, and is more in line with the ergonomics; the special detection tool platform for development is additionally provided with the limiting pin for fixing and rapid focusing, so that the detection efficiency is greatly improved, and the on-site rapid detection is realized at low cost.
Description
Technical Field
The utility model relates to a crack detection device, in particular to a crack detection device for a chromium coating on the excircle of a piston ring.
Background
With the progressive implementation of the national six-emission standard of automobiles, the technical and quality level of the surface treatment layer of the piston ring is an important factor for meeting the national six-emission requirement. The ceramic compounding and diamond chromium plating treatment of the surface of the piston ring has become a trend in recent years, and how to evaluate the microcrack project of the surface of the piston ring with high quality and rapidity becomes a challenge.
The traditional measuring method for cracks of the chromium coating on the excircle of the piston ring generally comprises two methods, one method is detection by a magnifying lens or a stereoscope: for convenient focusing, the ring is placed on an inspection bench, and is slowly rotated for a circle after being amplified by a magnifier or a stereoscope to observe the number of microcracks and the appearance depth of the surface of the excircle coating of the piston ring. Although the method ensures that the observed image has a certain field area, the method has no depth of field, only can observe extremely serious cracks, and cannot observe and evaluate the cracks slightly shallowly. In addition, the piston ring is elliptical, so that the continuous focusing is required when one circle of the piston ring is observed, and the efficiency is low. The other is metallographic microscope detection: because the piston ring has different cylinder diameter changes, the upright metallographic microscope has stroke limitation, so the inverted piston ring is adopted. The ring is vertically and inversely placed on a microscope objective table, and after the ring is amplified by proper multiplying power, the ring is slowly rotated for one circle to observe the number of microcracks on the surface of the excircle coating of the piston ring and the appearance depth. The method is opposite to a detection method of a magnifying glass or a stereoscope, can ensure the depth of field of an observed image, can observe slightly shallow cracks, but an imaging mechanism determines that only a very small micro area can be observed once to observe the full appearance, and the method needs to move continuously all around besides circumferential rotation, so that the efficiency is extremely low.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims to provide a crack detection device for a chromium coating on the excircle of a piston ring, which solves the problems of inconvenience in focusing, limitation of imaging range and low detection efficiency of the conventional detection device because a sample needs to be moved manually.
The technical scheme is as follows: the device for detecting cracks of the chromium coating on the excircle of the piston ring comprises a movable sample table, a horizontal microscope and a display, wherein the horizontal microscope comprises an objective lens, a rotating sleeve and a support, one end of the objective lens is arranged on the rotating sleeve, a coaxial LED (light-emitting diode) lamp source is arranged on the rotating sleeve, the support is connected with the rotating sleeve, a hand wheel for driving the horizontal microscope to adjust focal length is arranged on the support, and the horizontal microscope is in signal connection with the display screen.
The position of the sample is conveniently adjusted, and the movable sample stage moves through the arranged X, Y-direction sliding rail.
In order to fix the piston ring and realize quick focusing, a limiting pin for limiting the piston ring is arranged on the movable sample table.
Preferably, the horizontal microscope is in signal connection with the display screen through a CCD element.
And a numerical aperture amplifying device is arranged at one end of the rotating sleeve, which is far away from the objective lens.
The support is convenient to be connected with the rotating sleeve, and the support is connected with the rotating sleeve through the clamping piece.
Has the advantages that: the utility model integrates the light path conversion of different reflection and refraction light principles commonly used for stereoscopic vision and metallographic detection samples into one light path, so that the light path has the advantages of large visual field of a stereoscopic microscope and high depth of field and high resolution of a metallographic microscope, and meets the requirement of observing shallow cracks in the large visual field; the piston ring realizes the circumferential detection of lying rotation by adopting a horizontal microscope, and is more in line with the human engineering; the special detection tool platform for development is additionally provided with the limiting pin for fixing and rapid focusing, so that the detection efficiency is greatly improved, and the on-site rapid detection is realized at low cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the optical path component of the present invention.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in the figure 1-2, the utility model discloses a crack detection device for a chromium coating on the excircle of a piston ring, which comprises a movable sample stage 2 and a horizontal microscope, wherein the movable sample stage 2 is arranged on a damping table 1, the movable sample stage 2 moves through an X, Y-direction slide rail, a limiting pin 3 for limiting the piston ring is arranged on the movable sample stage 2, the horizontal microscope comprises an objective 4, a rotating sleeve 6 and a support, the support is fixed on the damping table 1, one end of the objective is arranged on the rotating sleeve 6, a coaxial LED lamp source 5 is arranged on the rotating sleeve 6, a numerical aperture amplifying device 9 is arranged at one end, far away from the objective, of the rotating sleeve 6, the support is connected with the rotating sleeve 6 through a clamping piece 7, the support is provided with a hand wheel 8 for driving the horizontal microscope to adjust the focal length, and the horizontal microscope is in signal connection with a display screen 12 through a CCD element 10.
When the utility model is used, the optical amplification assembly is assembled according to different multiplying power requirements, the ring is horizontally placed on the sample table, the surface of the excircle to be observed is aligned with the objective lens, an image is projected onto a display screen, the focal length is adjusted, the limit pin is fixed, the number and the appearance of microcracks on the surface of the excircle coating are observed and evaluated, the ring is rotated for one circle until all the surfaces of the excircle coating of the whole piston ring are observed, and the appearance of the image can be arbitrarily intercepted, measured and stored according to requirements.
Claims (6)
1. The utility model provides a piston ring excircle chromium coating crack detection device, its characterized in that, includes portable sample platform (2), horizontal microscope and display (12), horizontal microscope includes objective (4), rotates cover (6) and support, objective (4) one end is installed on rotating cover (6), rotates and installs coaxial LED lamp source (5) on cover (6), the support is connected with rotating cover (6), be provided with hand wheel (8) of drive horizontal microscope focusing on the support, horizontal microscope and display screen signal connection.
2. The device for detecting the cracks of the chromium coating on the outer circle of the piston ring according to claim 1, wherein the movable sample table (2) is moved by an arranged X, Y-direction slide rail.
3. The device for detecting the cracks of the chromium coating on the outer circle of the piston ring according to the claim 1, wherein a limiting pin (3) for limiting the piston ring is arranged on the movable sample table (2).
4. The device for detecting cracks in the chromium coating on the outer circle of the piston ring as claimed in claim 1, wherein the horizontal microscope is in signal connection with a display (12) through a CCD element (10).
5. The device for detecting the cracks of the chromium coating on the outer circle of the piston ring as claimed in claim 1, characterized in that a numerical aperture amplifying device (9) is arranged at one end of the rotating sleeve (6) far away from the objective lens (4).
6. The device for detecting cracks in the chromium coating on the outer circle of the piston ring as claimed in claim 1, wherein the support is connected with the rotating sleeve (6) through a clamping piece (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011749.4U CN215599027U (en) | 2021-08-25 | 2021-08-25 | Crack detection device for chromium coating layer on excircle of piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122011749.4U CN215599027U (en) | 2021-08-25 | 2021-08-25 | Crack detection device for chromium coating layer on excircle of piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215599027U true CN215599027U (en) | 2022-01-21 |
Family
ID=79882770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122011749.4U Active CN215599027U (en) | 2021-08-25 | 2021-08-25 | Crack detection device for chromium coating layer on excircle of piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215599027U (en) |
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2021
- 2021-08-25 CN CN202122011749.4U patent/CN215599027U/en active Active
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