CN1587903A - Method for detecting emergy wheel surface topography using laser scan triangular method - Google Patents
Method for detecting emergy wheel surface topography using laser scan triangular method Download PDFInfo
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- CN1587903A CN1587903A CN 200410053843 CN200410053843A CN1587903A CN 1587903 A CN1587903 A CN 1587903A CN 200410053843 CN200410053843 CN 200410053843 CN 200410053843 A CN200410053843 A CN 200410053843A CN 1587903 A CN1587903 A CN 1587903A
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Abstract
A method of detecting appearance of emery wheel surface by laser scanning triangle method1 belongs to mechanical engineering detection technical field. Firstly, refit emery wheel; the emery wheel refitted is fixed just under laser scan head whose position is adjusted to make laser light beam from neon laser parallel with y-z plane and the laser light beam irradiate the emery wheel surface; adjust output power and width of light beam of neon laser; make laser scan head move along direction of x axis, the scanning table move along negative direction of y axis, then laser scan head move along negative direction of x axis; transformation of position of reflection point on three-dimensional surface in Z axis direction cause corresponding position transformation of image on position sensor of light spot, location value of the latter through AD conversion is sent into computer; calculate height value of every tested point in z direction on the surface. The method can not only accurately test emery wheel appearance of surface qualitatively but also has fast testing speed, high accuracy and notable economical benefit.
Description
Technical field
The present invention relates to a kind of contactless wheel face pattern detection method, particularly a kind of method that adopts the laser scanning trigonometry to detect the wheel face pattern belongs to mechanical engineering detection technical field.
Background technology
The wheel face pattern is one of key factor that influences grinding process.The wheel face pattern not only has random nature, and dynamic change takes place in grinding process, has brought very big difficulty to research.Though can set up some theoretical models to the wheel face pattern at present, often done a lot of simplification when setting up these models, the scope of application of model is very limited.In the stochastic distribution of emery wheel inside the wheel face pattern has been carried out computer simulation by the simulation abrasive particle, these analog results have certain reference value, but still have sizable gap with the actual pattern of emery wheel.
Detection method to the research of wheel face pattern in the prior art comprises that mainly duplicating method, tracer method, light cut method, electrooptical automatic measuring method and laser power spectrometry etc.Wherein duplicating method can only obtain the distribution situation of wheel face abrasive particle, can not reflect the information of the exposed height of abrasive particle.Tracer method, light cut methods such as method can only measure on the emery wheel cylindrical two-dimentional shape characteristic on the circumference, can not draw the whole three-dimensional appearance of wheel face.Can only obtain some state of wheel face with the laser power spectral method, distribute, can not obtain the complete pattern of wheel face, can't obtain the actual pattern of emery wheel accurately as abrasive wear area and abrasive particle.The three-dimensional coordinate measurement method is on three coordinate measuring machine, the height of point-to-point measurement wheel face each point, thus obtain the three-dimensional appearance of wheel face.Three-coordinate measuring method adopts mechanical contact gauge head, if the measurement spacing is 0.1mm, then measure the pattern in 5mm of wheel face * 5mm area, the height that needs 2500 points of point-to-point measurement, as adopting littler measuring distance, measurement point will be more, and therefore measuring needs the longer time, and efficiency of measurement is very low.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and defective, a kind of method that adopts the laser scanning trigonometry to detect the wheel face pattern is provided.Making its laser scanning trigonometry of using the non-contact optical gauge head in three-dimensional coordinate detect the method for wheel face pattern, do not have the mechanical effect of emery wheel to gauge head, can not wear and tear in the gauge head tip.
The present invention implements by following technical scheme: concrete detection method is as follows:
1. at first emery wheel is repaired;
2. the emery wheel after will repairing is fixed on the scanning table under the laser scanning head, adjusts the position of laser scanning head, laser beam and y-z plane parallel that neon laser is sent, and be radiated on the wheel face;
3. adjust the output power and the width of light beam of neon laser;
4. after laser scanning head moved along the x direction of principal axis, the scanning table moved along y axle negative direction, afterwards, laser scanning head is moved along x axle negative direction;
When 5. laser scanning head moved, drew continuous variation of z direction of principal axis the position of reflective spot on the three-dimensional surface
Respective change takes place in the position of playing luminous point imaging on position sensor, and its positional value is sent into computing machine after analog to digital conversion;
6. calculate each point in z direction height value of surface.
This method adopts the laser scanning trigonometry detection system that is made of laser scanning system, analog-to-digital conversion module and computing machine, wherein laser scanning system is made up of laser scanning head and scanning table, and laser scanning head is made up of two lens combination, two position sensors (PSD), neon laser.With resinoid bond SiC emery wheel be placed on scanner head under the scanning table on, the position at scanning table place promptly is the x-y plane of selected three-dimensional coordinate, laser beam and y-z plane parallel that neon laser is sent.The Ne laser of neon laser output is radiated on the wheel face and produces diffuse reflection, and reflected light focuses on two position sensors by two lens combination.When laser scanning head moves and scan table when the y direction of principal axis moves along the x direction of principal axis, the position of reflective spot constantly changes at the z direction of principal axis on the emery wheel three-dimensional surface, corresponding the changing in position of the elephant that luminous point is become on two position sensors, its positional value is sent into computing machine after analog to digital conversion, and can calculate the z direction height value at wheel face each point place, thereby obtain the real topography of wheel face by triangle relation.
The invention has the beneficial effects as follows that this measuring method detects the wheel face pattern fast accurate quantification, provide effective reference date the durability and the ground effect of analysis and research emery wheel and the dressing that how to carry out emery wheel.Owing to adopt contactless measurement, there be not the mechanical effect of contact measurement method medium plain emery wheel to gauge head, can not wear and tear in the gauge head tip.
Description of drawings
Fig. 1 is a detection system synoptic diagram of the present invention.
1 is lens combination among the figure, the 2nd, and position sensor, the 3rd, neon laser, the 4th, emery wheel, the 5th, analog-to-digital conversion module, the 6th, computing machine, the 7th, scanning table.
Embodiment
Below in conjunction with detection system shown in the drawings specific implementation method of the present invention is described below:
The laser scanning trigonometry detection system that employing is made of Replica500 laser scanning system, analog-to-digital conversion module 5 and computing machine 6, wherein the Replica500 laser scanning system is made up of Replica500 laser scanning head and scanning table 7, and the Replica500 laser scanning head is made up of two lens combination 1, two position sensors 2, neon lasers 3; Selecting tissue for use number is that 5 46# granularity resinoid bond SiC emery wheel 4 (250 * 70 * 25) are as detected emery wheel;
The first step before measuring, is at first repaired SiC emery wheel 4 with the single-point diamond pen;
Second step was placed on the resinoid bond SiC emery wheel 4 after the finishing on the scanning table 7 under the Replica500 laser scanning head, made laser beam and the y-z plane parallel that neon laser 3 sends and was radiated on SiC emery wheel 4 surfaces;
The 3rd step, the performance parameter of adjustment neon laser 3, the output power that makes neon laser 3 is 5W, width of light beam is 200um;
The 4th step, mobile laser scanning head, after making laser scanning head move 8 seconds along the x direction of principal axis with the speed of 0.5mm/s, to scan table 7 and move 2mm along y axle negative direction, laser scanning head was moved 8 seconds along x axle negative direction with the speed of 0.5mm/s, after twice scanning, obtain the three-dimensional appearance in the 4mm * 4mm scope in emery wheel 4 surfaces;
In the 5th step, when laser scanning head moved, the position of reflective spot constantly changed at the z direction of principal axis on the three-dimensional surface, and respective change takes place in the position of luminous point imaging on two position sensors 2, and its positional value is sent into computing machine 6 after analog-to-digital conversion module 5 conversions;
In the 6th step, in computing machine 6, calculate each point in z direction height value of surface through triangle relation.
A sweep trace in the scanning shape appearance figure is analyzed, discovery is in the distance of 4mm, have 14 spikes, average every 1mm has 3, this is consistent with the result who observes under tool microscope, illustrate that result that laser three-dimensional scanning records can reflect the position distribution and the projecting height of each abrasive particle, the measurement result of using the laser three-dimensional scanning method to obtain can reflect the real topography situation of emery wheel.
Claims (7)
1. a method that adopts the laser scanning trigonometry to detect the wheel face pattern is characterized in that, concrete detection method is as follows:
1. at first emery wheel (4) is repaired;
2. will repair back emery wheel (4) and be fixed on the scanning table (7) under the laser scanning head, adjust the position of laser scanning head, laser beam and y-z plane parallel that neon laser (3) is sent, and be radiated on emery wheel (4) surface;
3. adjust the output power and the width of light beam of neon laser (3);
4. after laser scanning head moved along the x direction of principal axis, scanning table (7) moved along y axle negative direction, afterwards, laser scanning head is moved along x axle negative direction;
When 5. laser scanning head moved, the position of reflective spot constantly changed at the z direction of principal axis and causes that luminous point in the position that position sensor (2) is gone up imaging respective change takes place on the three-dimensional surface, and its positional value is sent into computing machine (6) after analog-to-digital conversion module (5) conversion;
6. calculate each point in z direction height value of surface.
2. employing laser scanning trigonometry according to claim 1 detects the method for wheel face pattern, it is characterized in that, described step 3., the output power of adjusting neon laser (3) is 5W.
3. employing laser scanning trigonometry according to claim 1 and 2 detects the method for wheel face pattern, it is characterized in that, described step 3., the width of light beam of adjusting neon laser (3) output is 200um.
4. employing laser scanning trigonometry according to claim 1 detects the method for wheel face pattern, it is characterized in that, described step 4., laser scanning head is 0.5mm/s along the axial translational speed of x.
5. detect the method for wheel face patterns according to claim 1 or 4 described employing laser scanning trigonometries, it is characterized in that, described step 4., laser scanning head moved 8 seconds along the x direction of principal axis with the translational speed of 0.5mm/s.
6. adopt the laser scanning trigonometry to detect the method for wheel face pattern according to claim 1 or 5, it is characterized in that, described step 4., after laser scanning head moves 8 seconds with the translational speed of 0.5mm/s along the x direction of principal axis, along y axle negative direction motion scan table 2mm.
7. detect the method for wheel face patterns according to claim 1 or 4 or 5 described employing laser scanning trigonometries, it is characterized in that, 4. described step after the scanning table moves 2mm along y axle negative direction, makes laser scanning head move 8 seconds along x axle negative direction with the translational speed of 0.5mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410053843 CN1587903A (en) | 2004-08-19 | 2004-08-19 | Method for detecting emergy wheel surface topography using laser scan triangular method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410053843 CN1587903A (en) | 2004-08-19 | 2004-08-19 | Method for detecting emergy wheel surface topography using laser scan triangular method |
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| CN1587903A true CN1587903A (en) | 2005-03-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189487B (en) * | 2005-03-11 | 2010-08-11 | 形创有限公司 | Auto-referenced system and apparatus for three-dimensional scanning |
| CN102203549B (en) * | 2008-09-02 | 2013-01-09 | 卡尔蔡司股份公司 | Device and method for measuring a surface |
| CN101868690B (en) * | 2007-11-22 | 2013-09-04 | 罗伯特.博世有限公司 | Device and method for obtaining a 3D topography |
| CN109219731A (en) * | 2016-06-01 | 2019-01-15 | 住友橡胶工业株式会社 | The foreign matter of green tire adheres to method of discrimination |
| CN111947575A (en) * | 2020-08-12 | 2020-11-17 | 天津中德应用技术大学 | Multifunctional detection device and detection method based on laser triangulation |
-
2004
- 2004-08-19 CN CN 200410053843 patent/CN1587903A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189487B (en) * | 2005-03-11 | 2010-08-11 | 形创有限公司 | Auto-referenced system and apparatus for three-dimensional scanning |
| CN101868690B (en) * | 2007-11-22 | 2013-09-04 | 罗伯特.博世有限公司 | Device and method for obtaining a 3D topography |
| CN102203549B (en) * | 2008-09-02 | 2013-01-09 | 卡尔蔡司股份公司 | Device and method for measuring a surface |
| CN109219731A (en) * | 2016-06-01 | 2019-01-15 | 住友橡胶工业株式会社 | The foreign matter of green tire adheres to method of discrimination |
| CN109219731B (en) * | 2016-06-01 | 2021-01-08 | 住友橡胶工业株式会社 | Method for discriminating foreign matter adhesion of green tire |
| CN111947575A (en) * | 2020-08-12 | 2020-11-17 | 天津中德应用技术大学 | Multifunctional detection device and detection method based on laser triangulation |
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