CN114777693A - Detection device and detection method for detecting product flatness by using light - Google Patents
Detection device and detection method for detecting product flatness by using light Download PDFInfo
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- CN114777693A CN114777693A CN202210478816.XA CN202210478816A CN114777693A CN 114777693 A CN114777693 A CN 114777693A CN 202210478816 A CN202210478816 A CN 202210478816A CN 114777693 A CN114777693 A CN 114777693A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
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Abstract
The invention discloses a detection device and a detection method for detecting the flatness of a product by using light, and the detection device comprises a rack, a bottom plate and a positioning jig assembly, wherein the positioning jig assembly comprises a positioning check tool plate detachably arranged on the bottom plate and a lower light source arranged below the positioning check tool plate, a light transmission groove for allowing the light to pass through is formed in the positioning check tool plate, a plurality of shooting elements for shooting and identifying the width of the overflowing light are arranged around the circumference of the positioning check tool plate, the width of the overflowing light is the imaging width of the overflowing light in an image in a gap between a detected surface of the product and a standard surface of the positioning check tool plate, the shooting elements are adjustably arranged on the bottom plate through an adjusting assembly, and are in communication connection with a control element which is in communication connection with a feedback element; through the arrangement of the detection device and the detection method, the flatness of the product can be quickly and accurately detected, manpower is saved, the high efficiency and convenience of the product detection process are improved, and the product quality is ensured.
Description
Technical Field
The invention belongs to the technical field of product flatness detection, and particularly relates to a detection device and a detection method for detecting product flatness by using light.
Background
In the production of parts of a mobile phone support, in order to ensure the quality of a product, the flatness of the product is often required to be detected; in present production, some adopt artifical handheld utensil feeler gauge progressively detect operation, and it is obvious detection efficiency low, single unit machine in addition, personnel are extravagant serious, also have some to utilize point laser or line laser to detect, but often can not reach and detect the required precision, and the testing result can't be guaranteed, very easily influences product quality.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the detection device and the detection method for detecting the flatness of the product by using light, which improve the detection efficiency and ensure the detection precision.
In order to achieve the purpose, the invention adopts the following technical scheme: a detection device for detecting the flatness of a product by using light comprises a frame, a bottom plate arranged on the frame and a positioning jig assembly for positioning and mounting the product, the positioning jig component comprises a positioning checking plate which is detachably arranged on the bottom plate and a lower light source which is arranged below the positioning checking plate, the positioning checking plate is provided with a light-transmitting groove for light to pass through, a plurality of shooting elements for shooting and identifying the width of the overflowing light are arranged around the circumference of the positioning checking plate, the width of the overflowing light is the imaging width of the overflowing light in an image in a gap between the detected surface of the product and the standard surface of the positioning checking plate, the shooting element is adjustably mounted on the bottom plate through the adjusting assembly, the shooting element is in communication connection with a control element, and the control element is in communication connection with a feedback element.
Preferably, the positioning checking fixture plate is detachably provided with an equal-height column used for suspending the positioning checking fixture plate above the lower light source.
Preferably, the positioning checking fixture plate comprises a base plate, an outline contour plate fixedly connected to the base plate, contour tables positioned on two sides of the outline contour plate, extension tables positioned on the other two sides of the outline contour plate and a standard table positioned on one side of the extension tables, wherein an inner positioning block for auxiliary positioning is detachably and fixedly connected to the outline contour plate, the contour tables are higher than the outline contour plate, the light transmission grooves are formed in one side, facing the outline contour plate, of the contour tables, the extension tables and the top surface of the outline contour plate are integrally formed, and outer positioning blocks for auxiliary positioning are detachably mounted at two ends of the extension tables respectively; the standard platform with extend the platform interval and set up and be equipped with between the two the printing opacity groove.
Preferably, the adjusting part include demountable installation in the fore-and-aft regulation piece on the bottom plate, set up in fore-and-aft regulation groove on the fore-and-aft regulation piece, install in upper and lower regulating block on the fore-and-aft regulation piece, set up in upper and lower regulating groove on the upper and lower regulating block, be used for the installation shooting component about the regulating plate and set up in about on the regulating plate about the regulating groove, all wear to be equipped with in the elongated slot and it and be used for fixed screw thread spare around the regulating groove, the regulating plate pass through screw thread spare rigid coupling in on the bottom plate around, the regulating plate has through the screw thread spare rigid coupling about, about on the regulating plate have through the screw thread spare rigid coupling shooting component.
Preferably, the flatness of the standard surface of the positioning gauge plate is not higher than 0.005 mm.
A method for inspecting a device for inspecting flatness of products using light as described above, comprising:
s1, selecting a corresponding positioning check tool plate according to different product specifications, and mounting the product on the positioning check tool plate;
s2, controlling the lower light source to work, respectively shooting the images of the areas where the light transmission grooves are located through the shooting elements, and transmitting the images to the control element;
and S3, the control element identifies the width of the overflow light line in the image shot by each shooting element, and compares the width of the overflow light line with a preset standard value to determine whether the flatness of the product meets the requirement.
Preferably, the preset standard value is 0.2 mm.
Preferably, when the width of the overflowing light in the image shot by any one shooting element exceeds a preset standard value, the flatness of the detected plane of the product is determined to be not in accordance with the requirement, the control element controls the feedback element to give an alarm, and the numerical value of the width of the overflowing light in each image is recorded.
Preferably, the control device recognizes a distribution of the overflowing light in the image to determine a flatness problem of the product, determines that the measured surface of the product is convex when the light is a bright distribution with dark center and bright sides, and determines that the measured surface of the product is concave when the light is a dark distribution with bright center and dark sides, and stores the determination result in the control device.
Preferably, when the width of the overflowing light in the image shot by each shooting element is not larger than a preset standard value, the flatness of the detected plane of the product is determined to meet the requirement, and the control element controls the feedback element to feed back the qualified product.
The invention has the technical effects that:
1. the positioning jig assembly through the detection device is used for quickly installing and positioning, a plurality of shooting elements distributed in a surrounding mode shoot and recognize the overflowing light width of each area, the control element compares the obtained overflowing light width with a preset standard value, and therefore the product flatness is quickly and accurately detected, manpower is saved, the efficiency and convenience of the product detection process are improved, and the product quality is guaranteed.
2. The mode of shooting the image through the shooting element detects, can be visual and parameterize the testing result, conveniently carry out preliminary analysis to product plane degree problem to be convenient for subsequent traceing back through parameter record, thereby when further guaranteeing product detection quality, also accessible result auxiliary product subsequent production improves.
3. Through the detachable construction of positioning jig subassembly and adjusting part's setting, can be according to the difference of product specification, install different positioning jig subassemblies to adjust the position of shooting the component through adjusting part adaptability, thereby when improving detection device's suitability, further guarantee detection device to the detection quality of product plane degree.
Drawings
Fig. 1 is a schematic structural diagram of a detection device.
Fig. 2 is a schematic view of the structure at the adjusting assembly.
Fig. 3 is a schematic structural view of the positioning jig assembly.
FIG. 4 is a schematic structural diagram of a positioning fixture plate.
FIG. 5 is a schematic top view of a positioning fixture plate.
Fig. 6 is a schematic diagram of the operation of the present detection apparatus.
FIG. 7 is a flow chart of the detection method of the present invention.
The reference numerals of the main technical features in the figure are as follows: 1. a frame; 2. a base plate; 3. positioning a jig assembly; 31. positioning a gauge plate; 311. a base plate; 312. a shape-copying plate; 313. a profiling table; 314. an extension stage; 315. a standard station; 316. an inner positioning block; 317. an outer positioning block; 4. a lower light source; 5. an imaging element; 51. a front and rear adjusting block; 52. a front and rear adjustment groove; 53. an upper adjusting block and a lower adjusting block; 54. an upper and lower adjustment groove; 55. a left and right adjusting plate; 56. a left and right adjustment groove; 6. a buzzer; 7. a product; and 8, a light transmission groove.
Detailed Description
The invention is further illustrated by the following description and the accompanying drawings.
As shown in fig. 1 to 7, a device for detecting product flatness by using light includes a frame 1, a bottom plate 2 and a positioning jig assembly 3, wherein the bottom plate 2 is fixedly connected to the frame 1, and the positioning jig assembly 3 is mounted thereon.
Specifically, the positioning fixture component 3 includes a positioning fixture plate 31 and a lower light source 4, the lower light source 4 is mounted on the bottom plate 2, the positioning fixture plate 31 includes a base plate 311, a shape profile plate 312, a profile table 313, an extension table 314 and a standard table 315, the base plate 311 is detachably mounted above the lower light source 4 through an equal-height column, the shape profile plate 312 is fixedly connected to the base plate 311 and is rectangular, and an inner positioning block 316 is fixedly mounted on the shape profile plate 312 through a bolt and is used for being correspondingly matched with a groove on a product to assist in clamping and positioning the product; the shape copying plate 312 is fixedly connected with copying tables 313 at the long edges of the two sides, light transmission grooves are respectively formed in the shape copying plate 312 at one sides, facing the shape copying plate 312, of the copying tables 313, and the copying tables 313 are higher than the top surface of the shape copying plate 312; the short edges of the two sides of the shape copying plate 312 are fixedly connected with the extension table 314, the extension table 314 is equal in height to the shape copying plate 312, two ends of the extension table 314 extend to one side of the copying table 313 departing from the shape copying plate 312, and an outer positioning block 317 is fixedly arranged on the extension end through bolts so as to further assist in clamping and positioning of a product; the standard platform 315 is fixedly connected to the base plate 311 and located on one side of the extension platform 314 far away from the shape profile plate 312, the standard platform and the extension platform 314 are arranged at intervals, and the base plate 311 is located in a gap between the standard platform 315 and the extension platform 314 and is provided with a light transmission groove 8. For passage of an external light source. The side surfaces of the product can be clamped between the profiling tables 313 and between the outer positioning tables in a matching manner, the positioning is assisted by the inner positioning block 316, and the bottom surfaces of the product can be correspondingly abutted against the standard table 315, the extension table 314 and the shape profiling plate 312, so that the positioning and the installation of the product are realized.
Furthermore, the top surfaces of the shape copying plate 312, the extension table 314, the standard table 315 and the copying table 313 are standard surfaces, and the flatness of the top surfaces is not more than 0.005 mm.
Furthermore, each side surface of the positioning checking fixture plate 31 is provided with a shooting element 5, and the shooting element 5 is a camera and is detachably mounted on the bottom plate 2 through an adjusting assembly; two cameras are respectively arranged on one side where the two long sides of the positioning gauge plate 31 are located, one camera is respectively arranged on one side where the two short sides are located, and six cameras are arranged in total and are used for photographing and imaging the detected area corresponding to the product; the camera is used for shooting and identifying the width of the overflowing light, and the width of the overflowing light is the imaging width of the overflowing light in the picture in the gap between the detected surface of the product and the standard surface of the positioning checking fixture plate 31.
Further, the adjusting assembly comprises a front and rear adjusting block 51, a front and rear adjusting groove 52, an up and down adjusting block 53, an up and down adjusting groove 54, a left and right adjusting plate 55 and a left and right adjusting groove 56, the front and rear adjusting groove 52, the up and down adjusting groove 54 and the left and right adjusting groove 56 are all kidney-shaped grooves, and threaded parts for fixing are arranged in the waist-shaped grooves in a penetrating manner, and the threaded parts can be bolts and nuts; adjusting plate pass through the screw thread spare rigid coupling in on the bottom plate 2, from top to bottom the adjusting plate rigid coupling in just the symmetry is equipped with two on the adjusting plate around, have through the screw thread spare rigid coupling between two adjusting plates about, adjusting plate 55, have through the screw thread spare rigid coupling on controlling adjusting plate 55 shoot component 5.
Further, the shooting element 5 is connected with a control element in a communication mode, and the control element is a computer.
Further, the control element is electrically connected with a feedback element, and the feedback element can be an indicator light and a buzzer 6.
A method of detection, comprising:
s1, selecting a corresponding positioning check tool plate 31 according to different product specifications, and positioning and installing a product on the positioning check tool plate 31;
s2, controlling the lower light source 4 to work, respectively shooting the images of the areas where the light-transmitting grooves are located through the cameras, and transmitting the images to the computer;
and S3, the computer identifies the width of the overflow light line in the image shot by each shooting element 5, and compares the width with a preset standard value to determine whether the flatness of the product meets the requirement.
Wherein the preset standard value is 0.2 mm.
When the width of the overflowing light in the image shot by any one camera exceeds a preset standard value, the flatness of the detected plane of the product is determined to be not in accordance with the requirement, the control element controls the buzzer 6 to give an alarm, and the numerical value of the width of the overflowing light in each image is recorded into calculation so as to improve the production of the product subsequently.
In some embodiments, the computer may synchronously recognize the distribution of the overflow light in the image to determine the flatness problem of the product, determine that the detected surface of the product is convex downward if the light is in a distribution with dark middle and bright two sides, determine that the detected surface of the product is concave upward if the light is in a distribution with bright middle and dark two sides, and store the determination result in the computer, so as to further improve the subsequent production of the product.
When the width of the overflowing light in the image shot by each camera is not larger than a preset standard value, the flatness of the detected plane of the product is determined to meet the requirement, and the computer controls the indicator lamp to emit green light.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and the present invention can be applied to similar products, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (10)
1. A detecting device for detecting flatness of a product using light, characterized in that: the device comprises a rack (1), a bottom plate (2) arranged on the rack (1) and a positioning jig assembly (3) used for positioning and installing a product, wherein the positioning jig assembly (3) comprises a positioning check tool plate (31) detachably arranged on the bottom plate (2) and a lower light source (4) arranged below the positioning check tool plate (31), a light-transmitting groove used for allowing light to pass through is formed in the positioning check tool plate (31), a plurality of shooting elements (5) used for shooting and identifying the width of the overflowing light are arranged on the circumferential direction of the positioning check tool plate (31) in a surrounding mode, the width of the overflowing light is the imaging width of the overflowing light in an image in a gap between a detected surface of the product and a standard surface of the positioning check tool plate (31), the shooting elements (5) are adjustably arranged on the bottom plate (2) through adjusting assemblies, and the shooting elements (5) are in communication connection with a control element, a feedback element is communicatively coupled to the control element.
2. A detecting apparatus for detecting flatness of a product using light, according to claim 1, wherein: and the positioning checking fixture plate (31) is detachably provided with an equal-height column which is used for suspending the positioning checking fixture plate (31) above the lower light source (4).
3. A detecting apparatus for detecting flatness of a product using light, according to claim 1, wherein: the positioning detection tool plate (31) comprises a base plate (311), a shape copying plate (312) fixedly connected to the base plate (311), copying tables (313) located on two sides of the shape copying plate (312), extension tables (314) located on the other two sides of the shape copying plate (312) and a standard table (315) located on one side of the extension tables (314), wherein inner positioning blocks (316) used for auxiliary positioning are detachably and fixedly connected to the shape copying plate (312), the copying tables (313) are higher than the shape copying plate (312), the light transmission grooves are formed in one side, facing the shape copying plate (312), of the copying tables (313), the extension tables (314) and the top surface of the shape copying plate (312) are integrally formed, and outer positioning blocks (317) used for auxiliary positioning are detachably mounted at two ends of the extension tables (314) and the top surface of the shape copying plate (312); the standard table (315) and the extension table (314) are arranged at intervals, and the light transmission groove is arranged between the standard table and the extension table.
4. A detecting apparatus for detecting flatness of a product using light, as claimed in claim 1, wherein: the adjusting component comprises a front and back adjusting block (51) which is detachably arranged on the bottom plate (2), a front and back adjusting groove (52) which is arranged on the front and back adjusting block (51), an upper and lower adjusting block (53) which is arranged on the front and back adjusting block (51), an upper and lower adjusting groove (54) which is arranged on the upper and lower adjusting block (53), a left and right adjusting plate (55) which is used for installing the shooting element (5) and a left and right adjusting groove (56) which is arranged on the left and right adjusting plate (55), the front and back adjusting groove (52), the up and down adjusting groove (54) and the left and right adjusting groove (56) are long grooves, and threaded parts for fixing are arranged in the long grooves, the front and rear adjusting plates are fixedly connected on the bottom plate (2) through screw members, the upper and lower adjusting plates are fixedly connected with the left and right adjusting plates (55) through screw members, the left and right adjusting plates (55) are fixedly connected with the shooting element (5) through a threaded part.
5. A detecting apparatus for detecting flatness of a product using light, according to claim 1, wherein: the flatness of the standard surface of the positioning gauge plate (31) is not higher than 0.005 mm.
6. A method for inspecting a device for inspecting flatness of a product using light according to any one of claims 1 to 5, wherein: the detection method comprises the following steps:
selecting a corresponding positioning check tool plate (31) according to different product specifications, and mounting a product on the positioning check tool plate (31);
the lower light source (4) is controlled to work, images of the areas where the light-transmitting grooves are located are shot through the shooting elements (5) respectively, and the images are transmitted to the control element;
the control element identifies the width of the overflowing light line in the image shot by each shooting element (5), and the width of the overflowing light line is compared with a preset standard value to determine whether the flatness of the product meets the requirement.
7. A method of testing as claimed in claim 6, wherein: the preset standard value is 0.2 mm.
8. A method of detection as claimed in claim 6, wherein: when the width of the overflowing light in the image shot by any one shooting element (5) exceeds a preset standard value, the flatness of the detected plane of the product is determined to be not in accordance with the requirement, the control element controls the feedback element to give an alarm, and the numerical value of the width of the overflowing light in each image is recorded.
9. A method of testing as claimed in claim 8, wherein: the control element identifies the distribution condition of overflowing light in the image so as to judge the flatness problem of the product, if the light is in the distribution condition of dark in the middle and bright on two sides, the detected surface of the product is judged to be convex downward, and if the light is in the distribution condition of dark in the middle and bright on two sides, the detected surface of the product is judged to be concave upward, and the judgment result is stored in the control element.
10. A method of detection as claimed in claim 6, wherein: when the width of the overflowing light in the image shot by each shooting element (5) is not larger than a preset standard value, the flatness of the detected plane of the product is determined to meet the requirement, and the control element controls the feedback element to feed back the qualified product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210478816.XA CN114777693B (en) | 2022-05-05 | 2022-05-05 | Detection device and detection method for detecting flatness of product by using light |
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| CN202210478816.XA CN114777693B (en) | 2022-05-05 | 2022-05-05 | Detection device and detection method for detecting flatness of product by using light |
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| CN114777693A true CN114777693A (en) | 2022-07-22 |
| CN114777693B CN114777693B (en) | 2024-03-22 |
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2022
- 2022-05-05 CN CN202210478816.XA patent/CN114777693B/en active Active
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