CN110966948B - Laser dispensing precision detection module and detection method - Google Patents
Laser dispensing precision detection module and detection method Download PDFInfo
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- CN110966948B CN110966948B CN201911413025.3A CN201911413025A CN110966948B CN 110966948 B CN110966948 B CN 110966948B CN 201911413025 A CN201911413025 A CN 201911413025A CN 110966948 B CN110966948 B CN 110966948B
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- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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Abstract
The invention relates to a laser dispensing precision detection module and a detection method, wherein a triaxial moving module is controlled by computer software to drive a laser source to move, a qualified laser source firstly carries out height detection on each step surface of two detection modules to generate two groups of standard test values, then carries out height detection on each step surface of the two detection modules by a laser source to be detected to generate two groups of test values, and finally carries out subtraction on the two groups of standard test values and the two groups of test values respectively to obtain two groups of laser test deviation values, if the two groups of laser test deviation values are both within a deviation allowable range, the laser source to be detected is qualified, if at least one group of laser test deviation values are outside the deviation allowable range, the laser source to be detected is judged to be unqualified and NG is fallen, thereby replacing a laser interferometer to measure whether the laser source is qualified or not, the investment cost is reduced, the detection efficiency and the detection result are improved, and the method has good market application value.
Description
Technical Field
The invention relates to the technical field of laser detection height, in particular to a laser dispensing precision detection module and a detection mode.
Background
At present, in the technical field of laser dispensing, the size of a product to be dispensed is smaller and smaller, the dispensing precision requirement is higher and higher, the corresponding dispensing height requirement is also very high, and in the process of using laser in a large range, inaccurate laser compensation often occurs, or the laser detection value is not correct, so that abnormal production is caused. The existing equipment for detecting the laser precision, such as a laser interferometer, is very expensive, uneconomical and very time-consuming, can detect the laser precision only after production problems occur, and the precision is reduced after the laser is used for a long time; accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
The invention provides a laser dispensing precision detection module, which solves the problems.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
a laser dispensing precision detection module comprises a detection module, wherein the bottom of the detection module is a plane, and the upper part of the detection module is an inclined plane; a plurality of step surfaces are preset on the inclined surface of the upper part of the detection module, the heights of the step surfaces are sequentially increased in a stepped mode, and the height difference between every two adjacent step surfaces is a fixed value.
Preferably, the detection module is an alloy metal block.
Preferably, the number of step faces is at least four.
Preferably, the height difference between two adjacent step surfaces is 0.5 mm.
Preferably, the bottom of the detection module is provided with a plurality of fixing bolts and a plurality of magnetic ring mounting positions.
Preferably, a groove is further formed between every two adjacent step surfaces, and the depth values of the grooves are the same.
Preferably, a method for detecting the dispensing precision of laser,
s1, arranging and fixing the two detection modules on the detection platform along the X axis or the Y axis;
s2, fixing the qualified laser source on the three-axis moving module, and adjusting the detection height of the qualified laser source;
s3, controlling the three-axis moving module to move according to a set program by using computer software, and detecting whether the laser communication between the software and the qualified laser source is normal;
s4, the qualified laser source detects the heights of the two detection modules to obtain two groups of standard height difference values;
s5, taking down the qualified laser source, fixing the laser source to be detected on the three-axis moving module, and adjusting the detection height of the laser source to be detected;
s6, controlling the three-axis moving module to move according to a set program by using computer software, and detecting whether the laser communication between the software and the laser source to be detected is normal or not;
s7, the laser source to be tested performs height detection on the two detection modules to obtain two groups of test height difference values;
s8, comparing the two groups of test height difference values with the two groups of standard height difference values respectively, and further calculating two groups of laser test deviations of the laser source to be tested relative to the qualified laser source;
and S9, if the two groups of laser test deviations are within the deviation allowable range, determining the laser source OK to be tested, and if at least one group of laser test deviations are outside the deviation allowable range, determining the laser source NG to be tested.
Preferably, the two detection modules are a first metal block and a second metal block respectively.
Further, in step S4, the qualified laser source performs height detection on the two detection modules to obtain two sets of standard height difference values, specifically including step S41, acquiring position data of two positioning points, that is, selecting a midpoint of a step surface on the upper portions of the first metal block and the second metal block near the end portion as a mark first positioning point and a mark second positioning point, and then sequentially capturing and recording coordinate positions of the mark first positioning point and the mark second positioning point through a camera assembly mounted on the three-axis moving module;
s42, setting software program parameters of the qualified laser source for the detection coordinate positions of the upper step surfaces of the two detection modules;
step S43, height detection is carried out on each step surface of the first metal block; running computer software, controlling a three-axis moving module to drive a qualified laser source to intermittently move along the X-axis direction or the Y-axis direction, sequentially detecting the heights of other step surfaces on the upper part of a first metal block except a first positioning point, and displaying and recording the heights as a first group of standard test values in the computer software; setting the number of the white step surfaces as N, and setting the detection height values of the first group of standard test values as N-1;
step S44, calculating a first group of standard height difference values through the first group of standard test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 first group standard height difference values;
step S45, height detection is carried out on each step surface of the second metal block; the computer software is operated to control the three-axis moving module to drive the qualified laser source to intermittently move along the X-axis direction or the Y-axis direction, so that the heights of other step surfaces on the upper part of the second metal block except the second positioning point are sequentially detected, and are displayed and recorded as a second group of standard test values in the computer software; setting the number of black step surfaces as N, and setting the detection height values of the second group of standard test values as N-1;
step S46, calculating a second group of standard height difference values through a second group of standard test values; namely subtracting the detection height values of two adjacent step surfaces to obtain N-2 second group standard height difference values.
Further, in step S7, the laser source to be detected performs height detection on the two detection modules to obtain two groups of test height difference values, specifically including step S71, acquiring position data of two positioning points, that is, selecting a midpoint of a step surface on the upper portions of the first metal block and the second metal block near the end portion as a mark third positioning point and a mark fourth positioning point, and sequentially capturing and recording coordinate positions of the mark third positioning point and the mark fourth positioning point through a camera assembly mounted on the three-axis moving module;
s72, setting software program parameters of the laser source to be detected on the detection coordinate positions of the step surfaces on the upper parts of the two detection modules;
step S73, height detection is carried out on each step surface of the first metal block; running computer software, controlling the three-axis moving module to drive the laser source to be tested to intermittently move along the X-axis direction or the Y-axis direction, sequentially detecting the heights of other step surfaces on the upper part of the first metal block except for the third positioning point, and displaying and recording the heights as a first group of test values in the computer software; setting the number of the white step surfaces as N, and setting the detection height values of the first group of test values as N-1;
step S74, calculating a first group of test height difference values through the first group of test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 first group test height difference values;
step S75, height detection is carried out on each step surface of the second metal block; running computer software, controlling the three-axis moving module to drive the laser source to be tested to intermittently move along the X-axis direction or the Y-axis direction, sequentially detecting the heights of other step surfaces on the upper part of the second metal block except the fourth positioning point, and displaying and recording the heights as a second group of test values in the computer software; setting the number of black step surfaces as N, and setting the detection height values of the second group of test values as N-1;
step S76, calculating a second group of test height difference values through a second group of test values; subtracting the test values of two adjacent step surfaces to obtain N-2 second group test height difference values.
Compared with the prior art, the laser source testing device has the advantages that the computer software controls the three-axis moving module to drive the laser source to move, the qualified laser source firstly carries out height detection on each step surface of two detection modules to generate two groups of standard test values, then carries out height detection on each step surface of the two detection modules through the laser source to be tested to generate two groups of test values, and finally carries out subtraction on the two groups of standard test values and the two groups of test values correspondingly to obtain two groups of laser test deviation values, if the two groups of laser test deviation values are both within the deviation allowable range, the laser source to be tested is qualified, if at least one group of laser test deviation values are outside the deviation allowable range, the laser source to be tested is judged to be unqualified and NG is lost, so that whether the laser source is qualified or not is measured by replacing a laser interferometer, the investment cost is reduced, the detection efficiency and the result are improved, and the method has good market application value.
Drawings
For a clearer explanation of the embodiments or technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained from the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a detection module according to the present invention;
FIG. 2 is a schematic diagram of a thickness structure of the detection module of the present invention;
FIG. 3 is a logic diagram of the detection method of the present invention;
FIG. 4 is a schematic diagram showing the coordinates of each step surface of a first metal block (white) according to the present invention;
FIG. 5 is a schematic diagram showing the coordinates of each step surface of a second metal block (black) according to the present invention;
FIG. 6 is a graph illustrating a first set of standard test values according to the present invention;
FIG. 7 is a graphical representation of a second set of standard test values in accordance with the present invention;
FIG. 8 is a graphical representation of a first set of experimental test values according to the present invention;
FIG. 9 is a graphical representation of a second set of experimental test values according to the present invention;
FIG. 10 is a schematic diagram of two sets of laser test deviations according to the present invention;
as shown in the above legend: 1. the device comprises a first metal block 2, a first positioning point 3, a second metal block 4, a second positioning point 5 and a step surface.
Detailed Description
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The use of the terms "fixed," "integrally formed," "left," "right," and the like in this specification is for illustrative purposes only, and elements having similar structures are designated by the same reference numerals in the figures.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 to 2, the overall structure of the present invention is schematically illustrated:
Further, the detection module is used for detecting whether the laser emitted by the laser source with long service life is attenuated or not and meets the requirement, and if the laser does not meet the requirement, the NG is directly judged to be lost; the two detection modules are respectively a first metal block 1 and a second metal block 3, wherein the first metal block is a white metal block, before measurement, the middle point of the step surface at the upper end part of the first metal block is selected as a first positioning point 2, the second metal block is a black metal block, the middle point of the step surface at the upper end part of the second metal block is selected as a second positioning point 4, and other step surfaces are to-be-measured measurement points or measurement parts.
Embodiment 2, on the basis of embodiment 1, the detection module is an alloy metal block.
Embodiment 3, on the basis of embodiment 1, the number of step surfaces is at least four, and the number of processing step surfaces of the detection module can be flexibly set according to the requirements of customers; the number of the step surfaces is four, one step surface is selected as a positioning point or a reference point, when other 3 step surfaces on the upper part of the detection module are subjected to height detection by using a qualified laser source, 3 height standard test values can be obtained, and then the height standard values of two adjacent step surfaces are subtracted to obtain 2 laser test deviation values, so that the number of the step surfaces is at least 4; preferably, the number of the step surfaces is set to 10, so as to reduce the error probability of judging the laser test deviation.
Example 4, on the basis of example 1, the height difference between two adjacent step surfaces is 0.5 mm; can be according to on-the-spot actual conditions, according to laser precision, select for use the detection module of different differences in height in a flexible way, step face difference in height on can detecting module through numerical control lathe processing promptly at 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6-2mm, specific step face difference in height can be according to the nimble choice of customer's laser source precision, does not do other redundancies once more.
As shown in fig. 2, the step surface height difference is 0.5mm, that is, the height of the first step surface is 8.5mm, the height of the second step surface is 9.0mm, the heights of the other step surfaces are sequentially arranged in a height difference of 0.5mm, the height of the tenth step surface is 13mm, the width of the adjacent two step surfaces is 7mm, and the length is flexibly adapted according to the size of the detection platform.
Embodiment 5, on the basis of embodiment 1, the bottom of the detection module is provided with a plurality of fixing bolts and a plurality of magnetic ring mounting positions; the detection module is fixed on the detection platform through a fixing bolt or a magnetic ring mounting position.
Example 7, as shown in fig. 3, S1, two kinds of detection modules are arranged and fixed on the detection platform along the X axis or the Y axis;
s2, fixing the qualified laser source on the three-axis moving module, and adjusting the detection height of the qualified laser source;
s3, controlling the triaxial moving module to move according to a set program by using computer software, and detecting whether the laser communication between the software and the qualified laser source is normal;
s4, the qualified laser source detects the heights of the two detection modules to obtain two groups of standard height difference values;
s5, taking down the qualified laser source, fixing the laser source to be detected on the three-axis moving module, and adjusting the detection height of the laser source to be detected;
s6, controlling the three-axis moving module to move according to a set program by using computer software, and detecting whether the laser communication between the software and the laser source to be detected is normal or not;
s7, the laser source to be tested performs height detection on the two detection modules to obtain two groups of test height difference values;
s8, comparing the two groups of test height difference values with the two groups of standard height difference values respectively, and further calculating two groups of laser test deviations of the laser source to be tested relative to the qualified laser source;
and S9, if the two groups of laser test deviations are within the deviation allowable range, determining the laser source OK to be tested, and if at least one group of laser test deviations are outside the deviation allowable range, determining the laser source NG to be tested.
Further, when the two metal blocks are arranged and fixed on the detection platform, the connecting line direction of the upper step surface is parallel to the X axial direction or the Y axial direction; for example, when two metal blocks are arranged along the X axis, and the laser detection coordinate position of the laser source is set in the computer software program, the computer software drives the three-axis moving module to drive the laser source to move, the laser source is used for emitting laser signals to sequentially perform height detection on a plurality of step surfaces on the detection module, the laser source moves along the X axis, the Y axis and the Z axis of the measurement point of each step surface are preset to be consistent, and the coordinate of the X axis sequentially increases or decreases; when two metal blocks are arranged along the Y axis, and the coordinate position of laser detection is set in a computer software program, the computer software drives the three-axis moving module to sequentially detect the heights of a plurality of step surfaces on the detection module, and the three-axis moving module moves along the Y axis, the X-axis coordinate and the Z-axis coordinate of the measurement point of each step surface are preset to be consistent, and the Y-axis coordinate is sequentially increased or decreased progressively.
Embodiment 8, on the basis of embodiment 7, the two detection modules are respectively a first metal block and a second metal block, where the first metal block is a white metal block, and the second metal block is a black metal block, and since wavelengths emitted by the white and black metal blocks are different, laser detection on the black and white metal blocks may generate different influences, so that the metal blocks of both black and white colors need to be detected, and it can be determined whether the laser precision output by the laser source to be detected is qualified.
Example 9 on the basis of example 8, in step S4, the qualified laser source performs height detection on two detection modules to obtain two sets of standard height difference values,
the method specifically comprises the steps of S41, acquiring position data of two positioning points, namely selecting the middle points of a step surface at the upper parts close to the end parts of a first metal block and a second metal block as a mark first positioning point and a mark second positioning point respectively, and then sequentially grabbing and recording the coordinate positions of the mark first positioning point and the mark second positioning point through a camera assembly arranged on a triaxial moving module;
s42, setting software program parameters of the qualified laser source for the detection coordinate positions of the upper step surfaces of the two detection modules;
further, assuming that the number of the step surfaces of the white metal block is 10, and the connecting line of the measuring points of each step surface is parallel to the X axis, then in the software program, the coordinate of the height measuring position of each step surface on the upper portion of the white metal block by the qualified laser source is manually set to be laser1, the number behind the AT represents the XYZ coordinate, the XY axes represent the XY directions respectively, and the coordinates of the Y axis and the Z axis are fixed values, and the state after the program setting is as shown in fig. 4; then, for the ferrous metal block, the connecting line of the measuring points of each step surface is parallel to the X axis, and the measuring height position coordinates of the upper 10 step surfaces are set as above, and the state after the program setting is as shown in FIG. 5;
step S43, a qualified laser source detects the height of each step surface of the first metal block; the method comprises the steps of running a computer software program, controlling a three-axis moving module to drive a qualified laser source to intermittently move along the X-axis direction or the Y-axis direction, sequentially detecting the heights of other step surfaces on the upper part of a first metal block except a first positioning point, displaying and recording the height of the step surfaces as a first group of standard test values in the computer software program, and displaying and recording the first group of standard test values as a standard height detection value of the qualified laser source to the first metal block (white) as shown in FIG. 6; setting the number of the white step surfaces as N, and setting the detection height values of the first group of standard test values as N-1;
namely, when the white metal block has 10 step surfaces, the midpoint of one step surface of the selected end part is a first fixed point (namely a first reference point or a first reference point), the qualified laser source emits laser to sequentially detect the heights of other step surfaces of the white metal block, and 9 step surface height standard test values are generated;
step S44, calculating a first group of standard height difference values through the first group of standard test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 first group standard height difference values; the method comprises the following steps that (1) 9 first groups of standard test values generated by detecting a white metal block by laser emitted by a qualified laser source are subtracted from two adjacent standard test values, and then 8 first groups of standard height difference values can be obtained;
step S45, the qualified laser source detects the height of each step surface of the second metal block; the computer software is operated to control the three-axis moving module to drive the qualified laser source to intermittently move along the X-axis direction or the Y-axis direction, the qualified laser source sequentially detects the heights of other step surfaces on the upper part of the second metal block except for the second positioning point, and displays and records the heights as a second group of standard test values in the computer software, as shown in fig. 7, the height detection values of the qualified laser source on the second metal block (black) are shown; setting the number of black step surfaces as N, and setting the detection height values of the second group of standard test values as N-1;
when the ferrous metal block has 10 step surfaces, the midpoint of one step surface of the selected end part is a second positioning point (namely a second reference point or a second reference point), the qualified laser source emits laser to detect the heights of other step surfaces of the ferrous metal block, and 9 step surface height test values, namely a second group of standard test values, are generated;
step S46, calculating a second group of standard height difference values through a second group of standard test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 second group standard height difference values; namely, when the number of the step surfaces of the ferrous metal block is 10, the qualified laser source carries out height detection on the ferrous metal block so as to detect 9 second group standard test values generated, and the two adjacent values are subtracted to obtain 8 second group standard height difference values.
Further, in step S45, in order to ensure the accuracy of laser detection, the test values are prevented from being disorderly and reversely, so as to add a step of setting the laser detection time, and the test values are sorted by time; that is, after the XYZ moving module controls the qualified laser source to move to the detection point on the corresponding step surface at the upper part of the detection mode, and after how many seconds of laser detection, the XYZ moving module starts to output the reading to the software program, that is, the test time is highlighted on the basis of the attached figure 7.
Example 10, based on example 7, in step S7, the laser source to be tested performs height detection on two detection modules to obtain two sets of test height difference values,
the method specifically comprises the steps of S71, acquiring position data of two positioning points, namely selecting the middle points of a step surface at the upper parts close to the end parts of a first metal block and a second metal block as a mark third positioning point and a mark fourth positioning point respectively, and then sequentially grabbing and recording the coordinate positions of the mark third positioning point and the mark fourth positioning point through a camera assembly arranged on a triaxial moving module;
s72, setting software program parameters of the laser source to be detected on the detection coordinate positions of the step surfaces on the upper parts of the two detection modules;
further, assuming that the number of the step surfaces of the white metal block is 10, and the connecting line of the measuring points of each step surface is parallel to the X axis, then in the software program, the coordinate of the height measuring position of each step surface on the upper portion of the white metal block by the qualified laser source is manually set to be laser1, the number behind the AT represents the XYZ coordinate, the XY axes represent the XY directions respectively, and the coordinates of the Y axis and the Z axis are fixed values, and the state after the program setting is as shown in fig. 4; then, for the ferrous metal block, the connecting line of the measuring points of each step surface is parallel to the X axis, and the measuring height position coordinates of the upper 10 step surfaces are set as above, and the state after the program setting is as shown in FIG. 5;
step S73, the laser source to be detected detects the height of each step surface of the first metal block; the computer software is operated, the three-axis moving module is controlled to drive the laser source to be detected to intermittently move along the X axis or the Y axis, the laser source to be detected detects the heights of other step surfaces on the upper part of the first metal block except for the third positioning point in sequence, and the detected values are displayed and recorded as a first group of test values in the computer software, and are height detection values of the first metal block (white) by the laser source to be detected, as shown in fig. 8; setting the number of the white step surfaces as N, and setting the detection height values of the first group of test values as N-1;
namely, when the white metal block has 10 step surfaces, the midpoint of one step surface of the selected end part is a third positioning point (namely, a third reference point or a third reference point), the laser source to be tested emits laser to detect the heights of other step surfaces of the white metal block, and 9 step surface height test values are generated;
step S74, calculating a first group of test height difference values through the first group of test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 first group test height difference values; the laser source to be tested emits laser to detect the white metal block so as to generate 9 first group test values, and the adjacent two values are subtracted to obtain 8 first group test height difference values;
step S75, the laser source to be detected detects the height of each step surface of the second metal block; the computer software is operated to control the three-axis moving module to drive the laser source to be detected to intermittently move along the X-axis direction or the Y-axis direction, the heights of other step surfaces on the upper part of the second metal block except for the fourth positioning point of the laser source to be detected are sequentially detected, and are displayed and recorded as a second group of test values in the computer software, as shown in fig. 9, the test values are the height detection values of the second metal block (black) of the laser source to be detected; setting the number of black step surfaces as N, and setting the detection height values of the second group of test values as N-1;
when the ferrous metal block has 10 step surfaces, the midpoint of one step surface of the selected end part is a fourth positioning point (namely a fourth reference point or a fourth reference point), the laser source to be tested emits laser to perform height detection on other step surfaces on the upper part of the ferrous metal block except the fourth positioning point, and 9 step surface height test values, namely a second group of test values, are generated;
step S76, calculating a second group of test height difference values through a second group of test values; subtracting the test values of two adjacent step surfaces to obtain N-2 second group test height difference values; namely, when the step surface of the ferrous metal block is 10, the laser source to be tested performs height detection on the ferrous metal block to detect 9 second group test values generated, and the two adjacent values are subtracted to obtain 8 second group test height difference values.
Preferably, as shown in fig. 10, in step S8, 8 first group trial height difference values are compared with 8 first group standard height difference values, that is, sequentially and correspondingly subtracted, so as to obtain 8 first group laser test deviations; comparing the 8 second group of test height difference values with the 8 second group of standard height difference values, namely sequentially and correspondingly subtracting to obtain 8 second group of laser test deviations; assuming that the standard height difference values of the white metal block and the black metal block are both 0.5mm, the first group of laser test deviation and the second group of laser test deviation values should be within 0.008mm, if the laser test deviation values are 0.008mm, the precision of the laser source to be tested is 0.008mm, and if the laser test deviation values are 0.005mm, the precision of the laser source to be tested is 0.005 mm; if only one or two groups of laser test deviation values are larger than 0.008mm, judging the laser source NG to be tested, and if only two groups of laser test deviation values of the laser source to be tested are within 0.008mm, judging the laser source OK to be tested; in fig. 10, 8 deviation values in the first set of laser test deviation values and the second set of laser test deviation values are both 0.008mm, and thus the laser source to be tested is determined to be OK.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. The laser dispensing precision detection module is characterized by comprising a detection module, wherein the bottom of the detection module is a plane, and the upper part of the detection module is an inclined plane; the detection module is characterized in that a plurality of step surfaces are preset on an upper inclined surface of the detection module, the heights of the step surfaces are sequentially increased in a stepped manner, the height difference between two adjacent step surfaces is a fixed value, the detection module is an alloy metal block, and the number of the step surfaces is at least four; the height difference between two adjacent step surfaces is 0.5 mm; the bottom of the detection module is provided with a plurality of fixing bolts and a plurality of magnetic ring mounting positions; a groove is also formed between two adjacent step surfaces, and the depth values of the grooves are the same;
a laser dispensing precision detection method comprises the following steps:
s1, arranging and fixing the two detection modules on a detection platform along the X axis or the Y axis;
s2, fixing the qualified laser source on the three-axis moving module, and adjusting the detection height of the qualified laser source;
s3, controlling the three-axis moving module to move according to a set program by using computer software, and detecting whether the laser communication between the software and the qualified laser source is normal;
s4, the qualified laser source detects the heights of the two detection modules to obtain two groups of standard height difference values;
s5, taking down the qualified laser source, fixing the laser source to be detected on the three-axis moving module, and adjusting the detection height of the laser source to be detected;
s6, controlling the three-axis moving module to move according to a set program by using computer software, and detecting whether the laser communication between the software and the laser source to be detected is normal or not;
s7, the laser source to be tested performs height detection on the two detection modules to obtain two groups of test height difference values;
s8, comparing the two groups of test height difference values with the two groups of standard height difference values respectively, and further calculating two groups of laser test deviations of the laser source to be tested relative to the qualified laser source;
s9, if the two groups of laser test deviations are within the deviation allowable range, determining a laser source OK to be tested, and if at least one group of laser test deviations are outside the deviation allowable range, determining a laser source NG to be tested;
the two detection modules are respectively a first metal block and a second metal block;
in step S4, the qualified laser source performs height detection on the two detection modules to obtain two sets of standard height difference values,
the method specifically comprises the steps of S41, acquiring position data of two positioning points, namely selecting the middle points of a step surface at the upper parts close to the end parts of a first metal block and a second metal block as a mark first positioning point and a mark second positioning point respectively, and then sequentially grabbing and recording the coordinate positions of the mark first positioning point and the mark second positioning point through a camera assembly arranged on a triaxial moving module;
s42, setting software program parameters of the qualified laser source for the detection coordinate positions of the upper step surfaces of the two detection modules;
step S43, height detection is carried out on each step surface of the first metal block; running computer software, controlling a three-axis moving module to drive a qualified laser source to intermittently move along the X-axis direction or the Y-axis direction, sequentially detecting the heights of other step surfaces on the upper part of a first metal block except a first positioning point, and displaying and recording the heights as a first group of standard test values in the computer software; setting the number of the white step surfaces as N, and setting the detection height values of the first group of standard test values as N-1;
step S44, calculating a first group of standard height difference values through the first group of standard test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 first group standard height difference values;
step S45, height detection is carried out on each step surface of the second metal block; running computer software, controlling the three-axis moving module to drive the qualified laser source to intermittently move along the X-axis direction or the Y-axis direction, sequentially detecting the heights of other step surfaces on the upper part of the second metal block except the second positioning point, and displaying and recording the heights as a second group of standard test values in the computer software; setting the number of black step surfaces as N, and setting the detection height values of the second group of standard test values as N-1;
step S46, calculating a second group of standard height difference values through a second group of standard test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 second group standard height difference values;
in step S7, the laser source to be tested performs height detection on the two detection modules to obtain two sets of test height difference values,
the method specifically comprises the steps of S71, acquiring position data of two positioning points, namely selecting the middle points of one step surface at the upper parts close to the end parts of a first metal block and a second metal block as a mark third positioning point and a mark fourth positioning point respectively, and then sequentially grabbing and recording the coordinate positions of the mark third positioning point and the mark fourth positioning point through a camera assembly arranged on a triaxial moving module;
step S72, setting software program parameters of the laser source to be detected at the detection coordinate positions of the upper step surfaces of the two detection modules;
step S73, height detection is carried out on each step surface of the first metal block; the method comprises the steps that computer software is operated, a three-axis moving module is controlled to drive a laser source to be tested to intermittently move along the X-axis direction or the Y-axis direction, so that the heights of other step surfaces on the upper portion of a first metal block except a third positioning point are sequentially detected, and are displayed and recorded in the computer software as a first group of test values; setting the number of the white step surfaces to be N, and setting the detection height values of the first group of test values to be N-1;
step S74, calculating a first group of test height difference values through the first group of test values; subtracting the detection height values of two adjacent step surfaces to obtain N-2 first group test height difference values;
step S75, height detection is carried out on each step surface of the second metal block; running computer software, controlling the three-axis moving module to drive the laser source to be tested to intermittently move along the X-axis direction or the Y-axis direction, sequentially detecting the heights of other step surfaces on the upper part of the second metal block except the fourth positioning point, and displaying and recording the heights as a second group of test values in the computer software; setting the number of black step surfaces to be N, and setting the detection height values of the second group of test values to be N-1;
step S76, calculating a second group of test height difference values through a second group of test values; subtracting the test values of two adjacent step surfaces to obtain N-2 second group test height difference values.
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| CN200989760Y (en) * | 2006-12-21 | 2007-12-12 | 上海宝钢工业检测公司 | Nonmetal coating stepped test block |
| CN103017692A (en) * | 2012-11-27 | 2013-04-03 | 广州计量检测技术研究院 | Composite type calibration guide sample and composite type calibration method |
| CN203396295U (en) * | 2013-08-12 | 2014-01-15 | 天泽精密技术（上海）有限公司 | Standard block used for calibrating dial gauge |
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| CN200989760Y (en) * | 2006-12-21 | 2007-12-12 | 上海宝钢工业检测公司 | Nonmetal coating stepped test block |
| CN103017692A (en) * | 2012-11-27 | 2013-04-03 | 广州计量检测技术研究院 | Composite type calibration guide sample and composite type calibration method |
| CN203396295U (en) * | 2013-08-12 | 2014-01-15 | 天泽精密技术（上海）有限公司 | Standard block used for calibrating dial gauge |
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