CN104535585A - Laser diffraction measuring instrument for surface defects of bearing roller and method of laser diffraction measuring instrument - Google Patents
Laser diffraction measuring instrument for surface defects of bearing roller and method of laser diffraction measuring instrument Download PDFInfo
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- CN104535585A CN104535585A CN201510044401.1A CN201510044401A CN104535585A CN 104535585 A CN104535585 A CN 104535585A CN 201510044401 A CN201510044401 A CN 201510044401A CN 104535585 A CN104535585 A CN 104535585A
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Abstract
The invention relates to a laser diffraction measuring instrument for surface defects of a bearing roller and a method of the laser diffraction measuring instrument. The laser diffraction measuring instrument comprises a lifting plate which can rise and fall along the vertical direction, wherein a rotary table for placing a roller is arranged on the lifting plate; a flat plate with a conical through hole is arranged above the lifting plate; the conical through hole is formed right above the rotary table; the aperture of the conical through hole is smaller than that of the roller; a spring expansion link for propping against the upper end surface of the roller is arranged above the flat plate; upright posts are respectively arranged on the left side and the right side of the conical through hole; a slide chute is formed in each upright post; and a knife edge levelling ruler capable of moving left and right along the slide chute is formed in each slide chute. The invention provides a set of novel positioning, clamping and rotating device; the knife edge levelling rulers are pressed on the bearing roller surface by elastic force to form slits, so as to achieve the distance control of the slits; the quality of laser diffraction stripe images is ensured; and the bearing roller surface quality detection device is efficient, easy to operate and high in accuracy.
Description
Technical field
The present invention relates to a kind of laser diffraction measuring instrument device and method thereof of bearing roller surface imperfection.
Background technology
Bearing is in mechanical transmission course, play parts that are fixing and reduction load friction factor.To the precision of machine and have material impact serviceable life.Therefore, the raw manufacturer of bearing is absolutely necessary for the measurement of the quality of bearing roller surface working.
The detection of the suface processing quality of bearing roller is directed to without special detection technique in existing production practices, majority still adopts visual method, veteran skilled worker is relied on to identify bearing roller one by one with eyes, this method is not only expensive, efficiency is low but also there is the factor of human error, and effect is undesirable.
Laser diffraction measurement technology utilizes laser brightness high, good directionality, the feature such as the good and coherence of monochromaticity is good, adopt non-cpntact measurement and indirect measurement method, the fluctuation of trickle slot distances can be converted into the spacing change of obvious striped according to Fraunhofer diffraction principle, can be used for measuring atomic little Surface Flaw.Existing laser diffraction measuring instrument device cannot carry out the measurement of 360 ° to the whole outside surface of workpiece, complicated operation, can not be used for Practical Project simultaneously.Also blank is at present to the 360 ° of laser diffraction measuring instrument devices that carry out of bearing roller surface imperfection.
According to fraunhofer Slit Diffraction, when laser passes through by the slit formed between roller bearing surface and edge of a knife leveling ruler knife edge (slit width is D), accept the light and dark diffraction fringe of screen display at two-dimensional CCD, between the distance L that fringe spacing d and slit width D, laser wavelength lambda, slit and acceptance are shielded, meet relation d=L λ/D.Measure separation of diffraction stripe d, just instead can release slit width D.
Summary of the invention
The present invention is directed to above-mentioned prior art Problems existing and make improvement, namely technical matters to be solved by this invention is to provide a kind of laser diffraction measuring instrument device and method thereof of bearing roller surface imperfection, propose a set of new location, clamping, whirligig, utilize elastic force edge of a knife leveling ruler to be pressed on bearing roller surface simultaneously and form the spacing control that slit realizes slit easily, ensure that the quality of laser diffraction stripe pattern; It is a kind of efficient, easy to operate, high-precision bearing roller surface quality detection device.
In order to solve the problems of the technologies described above, a kind of technical scheme of the present invention is: a kind of laser diffraction measuring instrument device of bearing roller surface imperfection, comprising one can the lifter plate of vertically oscilaltion, described lifter plate is provided with one for placing the universal stage of roller, the flat board of band circular cone through hole is provided with directly over described lifter plate, directly over described circular cone lead to the hole site universal stage, the aperture of this circular cone through hole is less than roller, the top of described flat board is provided with the telescopic spring bar for contact roller upper surface, described flat board is respectively arranged with column on the left and right sides of circular cone through hole, described column is provided with chute, the edge of a knife leveling ruler that can move left and right along chute is provided with in described chute, the end face contact of described edge of a knife leveling ruler is on roller sidewall, this end face is provided with multiple projection, the rear side of described edge of a knife leveling ruler is hinged with the second telescopic spring bar, the two ends of described flat board are all hinged with stock, the described other end of the second telescopic spring bar and the upper end of stock are hinged, the two ends of described lifter plate are provided with stroke groove, the lower end of described stock is horizontally slipped in stroke groove by a roller bearing, during to make lifter plate oscilaltion, stock promotes edge of a knife leveling ruler contact on the sidewall of roller, lifter plate drives roller rising contact to live telescopic spring bar simultaneously, described flat board is respectively arranged with laser instrument in the side, front and back of circular cone through hole and two-dimensional CCD accepts screen.
Further, the protruding alternative arrangement on described two edge of a knife leveling rulers.
Further, be provided with collimating mirror between described laser instrument and roller, the laser sent to make laser instrument is irradiated on the slit of roller both sides after the collimation of collimating mirror.
Further, immediately below described lifter plate, be provided with seat board, described seat board be provided with the elevating mechanism ordering about lifter plate oscilaltion; Described elevating mechanism can be Worm-gear type elevating mechanism, hydraulic cylinder, scissors fork elevating mechanism etc.
Further, the left and right sides of described flat board is also respectively arranged with the support column for supporting and guide the second telescopic spring bar, described support column is provided with the through hole allowing the second telescopic spring bar pass through.
In order to solve the problems of the technologies described above, another kind of technical scheme of the present invention is: a kind of laser diffraction measurement method of bearing roller surface imperfection, carries out according to the following steps:
(1) the axial two ends of bearing roller are fixed, the left and right sidewall of bearing roller arranges edge of a knife leveling ruler respectively that be adjacent to roller sidewall, the end face that described edge of a knife leveling ruler contacts with roller sidewall is provided with multiple projection, to make to form slit between the end face of edge of a knife leveling ruler and roller sidewall, and record slit width D;
(2) at the other place of the front-rear side walls of roller, laser instrument is set respectively and two-dimensional CCD accepts screen, records slit and the distance L accepting to shield simultaneously;
(3) laser instrument is opened, make roller centrally line uniform rotation, by computing machine timing acquiring and record two-dimensional CCD accept screen on diffraction fringe image information, the corresponding two-dimensional CCD of diffraction image of each point of slit accepts a relative line of the upper horizontal direction of screen, according to fraunhofer Slit Diffraction d=λ L/D, employing analysis software goes out the fringe spacing d on diffraction image on every bar horizontal line, the slit width D1 of anti-its correspondence of release, obtain the gap size of diverse location on slit, by the slit width D comparing D1 and measure in advance, which judge to occur defect in position, the surface of bearing, and the size of defect, and then judge roller surface defect level.
Further, the protruding alternative arrangement on described two edge of a knife leveling rulers.
Compared with prior art, the present invention has following beneficial effect: this device passes through on the left and right sidewall of the bearing roller of a uniform rotation, arrange edge of a knife leveling ruler, side, side, front and back arranges laser instrument and two-dimensional CCD accepts screen, make to form slit between the end face of edge of a knife leveling ruler and roller sidewall, use fraunhofer Slit Diffraction, judge roller surface defect level with the data obtained; Efficiently, easy to operate, precision is high, is applicable to industrialized mass.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Accompanying drawing explanation
Fig. 1 is the organigram of the embodiment of the present invention.
Fig. 2 is the principle schematic of the embodiment of the present invention.
Fig. 3 is the organigram of roller and edge of a knife leveling ruler in the embodiment of the present invention.
Fig. 4 is that in the embodiment of the present invention, two-dimensional CCD accepts the diffraction fringe image on screen.
In figure: 1-roller, 2-seat board, 21-motor, 22-connecting rod lifting mechanism, 3-lifter plate, 31-stroke groove, 32-universal stage, 4-is dull and stereotyped, 41-circular cone through hole, 42-column, 43-support column, 5-edge of a knife leveling ruler, 51-is protruding, 6-telescopic spring bar, 7-second telescopic spring bar, 8-stock, 9-laser instrument, 10-collimating mirror, 11-two-dimensional CCD accepts screen, the width of D-slit, L-slit and the distance accepting to shield.
Embodiment
Embodiment one: as shown in Fig. 1 ~ 3, a kind of laser diffraction measuring instrument device of bearing roller surface imperfection, comprising one can the lifter plate 3 of vertically oscilaltion, described lifter plate 3 is provided with one for placing the universal stage 32 of roller 1, the flat board 4 of band circular cone through hole 41 is provided with directly over described lifter plate 3, directly over described circular cone through hole 41 position universal stage 32, the aperture of this circular cone through hole 41 is less than roller 1, the described top of dull and stereotyped 4 is provided with the telescopic spring bar 6 for contact roller 1 upper surface, described dull and stereotyped 4 are respectively arranged with column 42 on the left and right sides of circular cone through hole 41, described column 42 is provided with chute, the edge of a knife leveling ruler 5 that can move left and right along chute is provided with in described chute, the end face contact of described edge of a knife leveling ruler 5 is on roller 1 sidewall, this end face is provided with multiple protruding 51, the rear side of described edge of a knife leveling ruler 5 is hinged with the second telescopic spring bar 7, the described two ends of dull and stereotyped 4 are all hinged with stock 8, the described other end of the second telescopic spring bar 7 and the upper end of stock 8 are hinged, the two ends of described lifter plate 3 are provided with stroke groove 31, the lower end of described stock 8 is horizontally slipped in stroke groove 31 by a roller bearing, during to make lifter plate 3 oscilaltion, stock 8 promotes projection 51 contact of edge of a knife leveling ruler on the sidewall of roller 1, lifter plate 3 drives roller rising contact to live telescopic spring bar 6 simultaneously, described dull and stereotyped 4 are respectively arranged with laser instrument 9 in the side, front and back of circular cone through hole 41 and two-dimensional CCD accepts screen 11.
In the present embodiment, projection 51 alternative arrangement on described two edge of a knife leveling rulers, one of them edge of a knife leveling ruler is provided with two projections, another is provided with three projections.
In the present embodiment, be provided with collimating mirror 10 between described laser instrument 9 and roller 1, the laser sent to make laser instrument 9 is irradiated on the slit of roller both sides after the collimation of collimating mirror 10.
In the present embodiment, seat board 2 is provided with immediately below described lifter plate 3, described seat board 2 is provided with the connecting rod lifting mechanism 22 ordering about lifter plate 3 oscilaltion, this connecting rod lifting mechanism 22 comprises two middle parts and is hinged and the connecting rod intersected, the upper end of two connecting rods is all hinged on bottom lifter plate, and wherein the lower end of an elevating lever is hinged on seat board, and the lower end of another root elevating lever is connected with a motor 21, this connecting rod of this driven by motor moves, and then realizes the lifting of lifter plate.
In the present embodiment, the described left and right sides of dull and stereotyped 4 is also respectively arranged with the support column 43 for supporting and guide the second telescopic spring bar 7, described support column is provided with the through hole allowing the second telescopic spring bar 7 pass through.
When using this device, first bearing roller 1 is placed in the circular cone through hole 41 on flat board and positions, open motor 21, motor 21 orders about lifter plate 3 by connecting rod lifting mechanism 22 and rises, universal stage 32 on lifter plate 3 by roller 1 jack-up until roller upper end contact is bottom telescopic spring bar 6, the connecting rod 8 at dull and stereotyped 4 two ends is under the stroke groove 31 of lifter plate acts on simultaneously, drive the second telescopic spring bar 7, and then (projection 51 on edge of a knife leveling ruler makes the end face of edge of a knife leveling ruler and roller sidewall form slit on roller sidewall to promote the end face contact of edge of a knife leveling ruler, this slit width is D, and measure slit and the distance L accepting to shield), then universal stage 32 uniform rotation roller 1 is opened, open laser instrument 9 again, the laser that laser instrument 9 sends is irradiated on the slit of roller both sides after the collimation of collimating mirror 10, and accept screen 11 at two-dimensional CCD and show light and dark diffraction fringe, as shown in Figure 4 (namely the light and shade striped of middle most bright fringes both sides is the diffraction image of slit), by computing machine timing acquiring and record two-dimensional CCD accept screen on diffraction fringe image information, the corresponding two-dimensional CCD of diffraction image of each point of slit accepts a relative line of the upper horizontal direction of screen, according to fraunhofer Slit Diffraction d=λ L/D, employing analysis software goes out the fringe spacing d on diffraction image on every bar horizontal line, the slit width D1 of anti-its correspondence of release, obtain the gap size of diverse location on slit, by the slit width D comparing D1 and measure in advance, which judge to occur defect in position, the surface of bearing, and the size of defect, and then judge roller surface defect level.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (7)
1. the laser diffraction measuring instrument device of a bearing roller surface imperfection, it is characterized in that: comprising one can the lifter plate of vertically oscilaltion, described lifter plate is provided with one for placing the universal stage of roller, the flat board of band circular cone through hole is provided with directly over described lifter plate, directly over described circular cone lead to the hole site universal stage, the aperture of this circular cone through hole is less than roller, the top of described flat board is provided with the telescopic spring bar for contact roller upper surface, described flat board is respectively arranged with column on the left and right sides of circular cone through hole, described column is provided with chute, the edge of a knife leveling ruler that can move left and right along chute is provided with in described chute, the end face contact of described edge of a knife leveling ruler is on roller sidewall, this end face is provided with multiple projection, the rear side of described edge of a knife leveling ruler is hinged with the second telescopic spring bar, the two ends of described flat board are all hinged with stock, the described other end of the second telescopic spring bar and the upper end of stock are hinged, the two ends of described lifter plate are provided with stroke groove, the lower end of described stock is horizontally slipped in stroke groove by a roller bearing, during to make lifter plate oscilaltion, stock promotes edge of a knife leveling ruler contact on the sidewall of roller, lifter plate drives roller rising contact to live telescopic spring bar simultaneously, described flat board is respectively arranged with laser instrument in the side, front and back of circular cone through hole and two-dimensional CCD accepts screen.
2. the laser diffraction measuring instrument device of bearing roller surface imperfection according to claim 1, is characterized in that: the protruding alternative arrangement on described two edge of a knife leveling rulers.
3. the laser diffraction measuring instrument device of bearing roller surface imperfection according to claim 1, it is characterized in that: be provided with collimating mirror between described laser instrument and roller, the laser sent to make laser instrument is irradiated on the slit of roller both sides after the collimation of collimating mirror.
4. the laser diffraction measuring instrument device of bearing roller surface imperfection according to claim 1, is characterized in that: be provided with seat board immediately below described lifter plate, described seat board is provided with the elevating mechanism ordering about lifter plate oscilaltion.
5. the laser diffraction measuring instrument device of bearing roller surface imperfection according to claim 1, it is characterized in that: the left and right sides of described flat board is also respectively arranged with the support column for supporting and guide the second telescopic spring bar, described support column is provided with the through hole allowing the second telescopic spring bar pass through.
6. a laser diffraction measurement method for bearing roller surface imperfection, is characterized in that, carries out according to the following steps:
(1) the axial two ends of bearing roller are fixed, the left and right sidewall of bearing roller arranges edge of a knife leveling ruler respectively that be adjacent to roller sidewall, the end face that described edge of a knife leveling ruler contacts with roller sidewall is provided with multiple projection, to make to form slit between the end face of edge of a knife leveling ruler and roller sidewall, and record slit width D;
(2) at the other place of the front-rear side walls of roller, laser instrument is set respectively and two-dimensional CCD accepts screen, records slit and the distance L accepting to shield simultaneously;
(3) laser instrument is opened, make roller centrally line uniform rotation, by computing machine timing acquiring and record two-dimensional CCD accept screen on diffraction fringe image information, the corresponding two-dimensional CCD of diffraction image of each point of slit accepts a relative line of the upper horizontal direction of screen, according to fraunhofer Slit Diffraction d=λ L/D, employing analysis software goes out the fringe spacing d on diffraction image on every bar horizontal line, the slit width D1 of anti-its correspondence of release, obtain the gap size of diverse location on slit, by the comparison of D1 and D, judge the defective locations of bearing surface, and the size of defect, and then judge roller surface defect level.
7. the laser diffraction measurement method of bearing roller surface imperfection according to claim 6, is characterized in that: the protruding alternative arrangement on described two edge of a knife leveling rulers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510044401.1A CN104535585B (en) | 2015-01-29 | 2015-01-29 | Laser diffraction measuring instrument for surface defects of bearing roller and method of laser diffraction measuring instrument |
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| CN201510044401.1A CN104535585B (en) | 2015-01-29 | 2015-01-29 | Laser diffraction measuring instrument for surface defects of bearing roller and method of laser diffraction measuring instrument |
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| CN104535585A true CN104535585A (en) | 2015-04-22 |
| CN104535585B CN104535585B (en) | 2017-02-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352916A (en) * | 2015-11-27 | 2016-02-24 | 江苏理工学院 | Spinning machine roller surface quality detecting device based on laser diffraction and working method |
| CN106000896A (en) * | 2016-06-08 | 2016-10-12 | 佛山市联智新创科技有限公司 | Intelligent detecting device for sizes of rollers |
| CN109540918A (en) * | 2018-11-28 | 2019-03-29 | 鞍钢集团自动化有限公司 | A kind of hot rolled coil edge fault detection device and method |
| CN110528371A (en) * | 2019-08-30 | 2019-12-03 | 安徽省路桥试验检测有限公司 | Crack on road detector |
| CN113945161A (en) * | 2021-10-12 | 2022-01-18 | 青岛理工大学 | Bearing radial clearance measuring method and device based on laser transmission |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352916A (en) * | 2015-11-27 | 2016-02-24 | 江苏理工学院 | Spinning machine roller surface quality detecting device based on laser diffraction and working method |
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| CN106000896A (en) * | 2016-06-08 | 2016-10-12 | 佛山市联智新创科技有限公司 | Intelligent detecting device for sizes of rollers |
| CN109540918A (en) * | 2018-11-28 | 2019-03-29 | 鞍钢集团自动化有限公司 | A kind of hot rolled coil edge fault detection device and method |
| CN109540918B (en) * | 2018-11-28 | 2021-04-16 | 鞍钢集团自动化有限公司 | Hot-rolled coil edge defect detection device and method |
| CN110528371A (en) * | 2019-08-30 | 2019-12-03 | 安徽省路桥试验检测有限公司 | Crack on road detector |
| CN110528371B (en) * | 2019-08-30 | 2021-03-16 | 安徽省路桥试验检测有限公司 | Road crack detector |
| CN113945161A (en) * | 2021-10-12 | 2022-01-18 | 青岛理工大学 | Bearing radial clearance measuring method and device based on laser transmission |
| CN113945161B (en) * | 2021-10-12 | 2024-03-29 | 青岛理工大学 | Bearing radial clearance measuring method and device based on laser transmission |
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| CN104535585B (en) | 2017-02-22 |
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