CN115876093A - Performance detection system for aluminum alloy - Google Patents
Performance detection system for aluminum alloy Download PDFInfo
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Abstract
The invention relates to the technical field of metal performance detection, and discloses a performance detection method for an aluminum alloy, which comprises the following steps: s1, determining a surface to be detected of the aluminum alloy, dividing the surface to be detected according to the inclination, and dividing the surface to be detected into a plurality of actually measured subsection detection surfaces; s2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces positioned in the same inclination threshold range as equal inclination detection surfaces which are arranged in the same group. This a performance detecting system for aluminum alloy shines through the parallel light to aluminum alloy ingot surface, through above-mentioned mode, will be elongated the image equivalence after replace unchangeable arch of perceiving to the accurate every bellied image length of catching of vision mechanism, later through image length and parallel light and aluminum alloy ingot surface's contained angle calculate bellied actual outstanding height, and judge whether this height is in reasonable within range.
Description
Technical Field
The invention relates to the technical field of metal performance detection, in particular to a performance detection system for aluminum alloy.
Background
Aluminum, which is commonly referred to as electrolytic aluminum in the market supply, is a raw material for producing aluminum materials and aluminum alloy materials. The aluminum is a metal with low strength and good plasticity, and is made into an alloy for improving the strength or inducing functions except for using partial pure aluminum. The structure and the function of the aluminum alloy can be changed by adding one alloy element in the aluminum, and the aluminum alloy is suitable for being used as various processing materials or casting parts, namely common aluminum alloy metal components;
the aluminum alloy ingot is generally in a cylindrical structure or a cubic structure after being produced and formed, and the aluminum alloy ingot after being die-cast has many flat evaluation standards of performance indexes, for example: hardness, tensile strength, thermal stability, corrosion resistance, surface evenness of an aluminum alloy ingot, air hole presenting density and the like;
because the small bulges affect the surface flatness of the aluminum alloy ingot, the visual mechanism is difficult to capture the fluctuation change of the small bulges on the surface of the aluminum alloy when the small bulges are detected by the visual mechanism, and the detection precision of the aluminum alloy ingot can be reduced.
Disclosure of Invention
The invention provides a performance detection system for aluminum alloy, which is used for promoting the solution of the problems mentioned in the background art that because the surface flatness of an aluminum alloy ingot is mostly affected by a plurality of tiny bulges, and because the bulges are small, when the bulges are detected by a visual mechanism, the visual mechanism is often difficult to capture the fluctuation change of the tiny bulges on the surface of the aluminum alloy, which can reduce the detection precision of the aluminum alloy ingot.
The invention provides the following technical scheme: a performance detection method for aluminum alloy comprises the following steps:
s1, determining a surface to be detected of the aluminum alloy, dividing the surface to be detected according to the inclination, and dividing to form a plurality of actually-measured subsection detection surfaces;
s2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces positioned in the same inclination threshold range as equal-slope detection surfaces which are arranged in the same group;
s3, measuring the slope inclination average value of each group of equal-slope detection surfaces;
and S4, displaying the detection point on the equal-slope detection surface by using an optical generator in an equivalent substitution mode, recording the imaging length of the detection point after the detection point is displayed, calculating the net height of the detection point according to the imaging length, determining the area of the imaging length exceeding the set value as a first performance area, and determining the area of the imaging length not exceeding the set value as a second performance area.
As an alternative of the performance test system for aluminum alloy of the present invention, wherein: the dividing of the surface to be detected according to the inclination specifically comprises the following steps:
selecting an adjacent surface vertical to the surface to be detected of the aluminum alloy as an inclination planning surface;
establishing a plane rectangular coordinate system xoy according to the inclination planning surface;
acquiring connecting lines where the upper side and the lower side of the inclination degree planning surface are located, respectively marking the connecting lines as a first extension line and a second extension line, marking inflection point coordinates on the first extension line and the second extension line, wherein the inflection point coordinates on the first extension line correspond to the inflection point coordinates on the second extension line one by one;
dividing the surface to be detected into a plurality of subsection detection surfaces according to the coordinates of each inflection point on the first extension line;
and calculating the slope of coordinates of two adjacent inflection points on the first extension line, and calculating the inclination angle of the corresponding distribution detection surface.
As an alternative of the performance test system for aluminum alloys of the present invention, wherein: the calculating the slope of the coordinates of two adjacent inflection points on the first extension line, for calculating the inclination angle of the distribution detection surface corresponding thereto specifically includes:
obtaining a slope correction line;
a connecting line of coordinates of two adjacent inflection points on the first extension line is regarded as a slope correction line, the distance of the slope correction line is recorded as L, a perpendicular bisector of the slope correction line is made and is intersected with the first extension line, and an intersection point is recorded as a slope correction point;
calculating the distance between the slope correction point and the slope correction line and recording as H;
if it is
In the case of the below 0.01, the inclination of the inclination correction line is regarded as the inclination angle of the distribution detection plane, and the distribution detection plane is regarded as the actually measured distribution detection plane.
As an alternative of the performance test system for aluminum alloys of the present invention, wherein: if it is
The slope correction point is taken as a boundary to divide the distribution detection surface into two sections which are respectively marked as a first distribution detection surface and a second distribution detection surface;
and regarding the first distribution detection surface and the second distribution detection surface as two actual measurement distribution detection surfaces, and calculating the slope of the slope correction point and the two adjacent inflection point coordinates, wherein the slope correction point and the slope of the two adjacent inflection point coordinates correspond to the inclination angles of the two actual measurement distribution detection surfaces respectively.
As an alternative of the performance test system for aluminum alloys of the present invention, wherein: integrating the inclination angle of each actually measured distribution detection surface;
setting the inclination threshold value to be 5 degrees;
and selecting actually measured distribution detection surfaces with inclination angle phase difference values of 5 degrees, and arranging the actually measured distribution detection surfaces as a same group.
As an alternative of the performance test system for aluminum alloy of the present invention, wherein: the step of displaying the detection point on the equal-slope detection surface by using the light generator in an equivalent substitution mode specifically comprises the following steps:
emitting parallel light beams to each set of actually measured distribution detection surfaces through a light generator;
selecting a group of equal-slope detection surfaces, and adjusting the included angle between the light beam of the light generator and the slope inclination mean value of the group of equal-slope detection surfaces to be a;
then, the projection height G = tana × imaging length of the detection point.
As an alternative of the performance test system for aluminum alloys of the present invention, wherein: the method for displaying the detection point image on the equal-slope detection surface by using the light generator in an equivalent substitution mode and recording the imaging length of the detection point image after display comprises the following steps:
acquiring the starting position of the formed image and the falling point position of the image, and calculating the distance between the starting position and the falling point position as the imaging length;
marking a detection point with the imaging length exceeding a set value;
adjusting the irradiation direction of the light generator, ensuring that the included angle of the light beam of the light generator and the slope average value of the group of equal-slope detection surfaces is a, and promoting the falling point direction of the detection points to fall in the empty point area;
measuring the detection point of which the imaging length exceeds the set value again;
if the imaging length still exceeds the set value, the area where the detection point is located is marked as a first performance area, otherwise, the area is marked as a second performance area.
As an alternative of the performance test system for aluminum alloy of the present invention, wherein: the step of causing the falling point direction of the detection point to fall in the empty point area specifically comprises:
marking the starting position of the imaging length exceeding a set value, establishing a circular identification area by taking the imaging length as a radius, recording the circle as c, and recording the position of a detection point within the radius range;
selecting a target line segment, wherein one end of the target line segment is overlapped with the starting point position of which the imaging length exceeds a set value, the other end of the target line segment is intersected with the circle c, and meanwhile, the target line segment is not overlapped with other detection point positions;
adjusting the irradiation direction of the light generator, ensuring the included angle a between the light beam of the light generator and the slope inclination mean value of the group of equal-slope detection surfaces, and promoting the image of the measurement point to be projected on the target line segment.
A system for implementing a performance detection method for an aluminum alloy, comprising:
a carrying platform for carrying the aluminum alloy;
a light generator for generating parallel light;
the vision acquisition module is used for acquiring and calculating the imaging length;
and the controller is used for controlling the light generator and the vision acquisition module to work.
The invention has the following beneficial effects:
1. this a performance detecting system for aluminum alloy, shine through the parallel light to aluminum alloy ingot surface, thereby aluminum alloy ingot surperficial arch can form one image (shadow under light) on aluminum alloy's surface, when the illumination angle of parallel light and aluminum alloy ingot surface contained angle diminish, aluminum alloy surface's arch will be elongated this moment, thereby through the aforesaid, the image equivalence that will be elongated replaces unchangeable arch of perceiving, so that the accurate every bellied image length of catching of vision mechanism, later calculate bellied actual outstanding height through image length and parallel light and aluminum alloy ingot surperficial contained angle, and judge whether this height is in reasonable within range.
2. This a performance detecting system for aluminum alloy divides according to the gradient through treating the detection face to cut apart and form a plurality of actual measurement subsection detection faces, and regard as equal slope detection face to the actual measurement distribution detection face that lies in same slope threshold value within range, and arrange as a same group, so that when the light generator shines, the unsmooth condition that visual detection mechanism can be to on the many places actual measurement subsection detection face detects.
3. This a performance detecting system for aluminum alloy, through measuring the inclined plane slope mean value of every group's constant slope detection face, the contained angle of adjustment optical generator light beam and the inclined plane slope mean value of this group's constant slope detection face is a certain definite value, the angular adjustment of selecting the optical generator that can be of can be suitable for every actual measurement distribution detection face in this group's constant slope detection face to measure more enough detection point situations that detect out more regions this time, also reduced the error to a certain extent simultaneously.
4. According to the performance detection system for the aluminum alloy, the irradiation direction of the light generator is adjusted, the adjusted influence is caused to fall on the target line segment, and the target line segment cannot cover other detection points in the range near the detection points, so that the measurement error caused by influence on partial coincidence is avoided.
Drawings
Fig. 1 is a schematic diagram of a hardware module structure according to the present invention.
FIG. 2 is a schematic structural diagram of coordinate distribution of inflection points in the present invention.
FIG. 3 is a schematic diagram of a slope correction line and a slope correction point according to the present invention.
FIG. 4 is a schematic diagram of an image of a detection point on a detection surface of an actual measurement section according to the present invention.
FIG. 5 is a schematic view of another structure of an image of a detection point on a detection surface of an actual measurement section according to the present invention.
FIG. 6 is a schematic view of the orientation of a target line segment according to the present invention.
FIG. 7 is a schematic view of the orientation of an image falling on a target line segment according to the present invention.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
This application shines through the parallel light to aluminum alloy ingot surface, thereby the arch on aluminum alloy ingot surface can form an image (shadow under light) on the surface of aluminum alloy, when the angle of illumination of parallel light and aluminum alloy ingot surface contained angle diminish, the arch on aluminum alloy surface will be elongated this moment, thereby through the aforesaid mode, the image equivalence after will being elongated replaces the arch of unchangeable perception, so that every bellied image length is caught to the visual mechanism accuracy, later calculate bellied actual outstanding height through image length and parallel light and aluminum alloy ingot surface's contained angle, and judge whether this height is in reasonable within range.
Examples
A performance detection method for aluminum alloy comprises the following steps:
s1, determining a surface to be detected of the aluminum alloy, dividing the surface to be detected according to the inclination, and dividing to form a plurality of actually-measured subsection detection surfaces; because the aluminum alloy ingot is inevitably deformed in the moving and carrying process, when the aluminum alloy ingot is deformed, the local inclination of the surface to be detected can be caused, and further, when the parallel light irradiates the surface to be detected, the included angle between the light beam and the upper partial area of the detection surface can be caused to be non-uniform, so that the bulges with the same height can present images with different lengths on the inclined surface to be detected, the detection precision can be influenced, and the accurate judgment on the bulges on the surface of the aluminum alloy ingot is not facilitated;
the dividing of the surface to be detected according to the inclination specifically comprises the following steps:
selecting an adjacent surface vertical to the surface to be detected of the aluminum alloy as an inclination planning surface;
establishing a plane rectangular coordinate system xoy according to the inclination planning surface; reference may be made in particular to figure 2,
acquiring connecting lines where the upper side and the lower side of the inclination degree planning surface are located, respectively marking the connecting lines as a first extension line and a second extension line, marking inflection point coordinates on the first extension line and the second extension line, wherein the inflection point coordinates on the first extension line correspond to the inflection point coordinates on the second extension line one by one; and the coordinate of the inflection point is expressed as a node of the aluminum alloy ingot, which is bent.
Dividing the surface to be detected into a plurality of subsection detection surfaces according to the coordinates of each inflection point on the first extension line;
and calculating the slope of coordinates of two adjacent inflection points on the first extension line, and calculating the inclination angle of the corresponding distribution detection surface.
The specific calculation method is as follows: taking fig. 3 as an example, D1, D2, and D3 are coordinates of respective inflection points on the first extension line, D1 is (x 1, y 1), D2 is (x 2, y 2), and D3 is (x 3, y 3);
then, in fig. 3, the slope of the first measured distribution detection plane =
And if the first measured profile detection area has an inclination of β, tan β = { } { [ case ] is present>
The value of β can be calculated by a formula.
Furthermore, in the actual production process, fluctuation may also exist between two inflection point coordinates, specifically, a distribution detection surface between D2 and D3 in fig. 3 may be referred to, when the fluctuation degree is smaller, the influence of illumination on the image of the detection point is smaller, such errors may not be calculated, when the fluctuation degree is larger, the errors may greatly influence the image length of the detection point, and at this time, the distribution detection surface needs to be further segmented; in particular, the method comprises the following steps of,
the calculating the slope of the coordinates of two adjacent inflection points on the first extension line, for calculating the inclination angle of the distribution detection surface corresponding thereto specifically includes:
referring specifically to fig. 3, a slope correction line is obtained;
a connecting line of coordinates of two adjacent inflection points on the first extension line is regarded as a slope correction line, the distance of the slope correction line is recorded as L, a perpendicular bisector of the slope correction line is made and is intersected with the first extension line, and an intersection point is recorded as a slope correction point;
calculating the distance between the slope correction point and the slope correction line and recording as H; the coordinate of the slope correction point is (x 4, y 4), and the coordinate of the midpoint of the slope correction line is (
,/>
) In the rectangular plane coordinate system, the distance H between two points can be calculated by knowing the coordinates of the two points, and the specific calculation method is not described herein;
if it is
In the state of < 0.01, the inclination of the inclination correction line is recorded as the inclination angle of the distribution detection surface, and the distribution is detectedThe measuring surface is regarded as the measuring distribution measuring surface.
If it is
The slope correction point is taken as a boundary to divide the distribution detection surface into two sections which are respectively marked as a first distribution detection surface and a second distribution detection surface;
regarding the first distribution detection surface and the second distribution detection surface as two actually measured distribution detection surfaces, and calculating the slope correction point and the gradients of two adjacent inflection point coordinates, wherein the slope correction point and the gradients correspond to the inclination angles of the two actually measured distribution detection surfaces respectively;
specific examples are: in fig. 3, the slope of the second measured distribution detection plane on the left side of the slope correction point =: (
-y2）：（
X 2), the inclination angle of the second measured distribution detection surface can be obtained through the inclination value of the second measured distribution detection surface; slope of the third measured profile detection plane on the right side of the slope correction point = (y 3-) ->
）：（x2-/>
) And the inclination angle can be obtained through the inclination value of the third actually measured distribution detection surface.
S2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces positioned in the same inclination threshold range as equal-slope detection surfaces which are arranged in the same group; integrating the inclination angle of each actually measured distribution detection surface;
setting the inclination threshold value to be 5 degrees;
selecting actual measurement distribution detection surfaces with inclination angle phase difference values of 5 degrees, and arranging the actual measurement distribution detection surfaces as a same group; so that when the optical generator shines, the unsmooth condition on the detection face of many places actual measurement subsection can be detected to visual detection mechanism.
For example, in fig. 2, the first measured distribution detection plane and the fourth measured distribution detection plane can be regarded as equal slope detection planes;
s3, measuring the slope inclination average value of each group of equal-slope detection surfaces;
for example, in fig. 2, the average value of the inclination angles of the first actually measured distribution detection surface and the fourth actually measured distribution detection surface can be regarded as the average value of the inclination angles of the inclined surfaces of the reorganized equal-inclination detection surfaces;
it should be noted that, if the difference between the inclination angle of a certain actually measured distribution detection surface and the inclination angles of other actually measured distribution detection surfaces is more than 5 °, the actually measured distribution detection surfaces are independently grouped, and the inclination angle of the actually measured distribution detection surface can be regarded as an inclined plane inclination average value;
and S4, displaying the detection points on the equal-slope detection surface in an equivalent substitution mode by using a light generator, recording the imaging length of the detection points after the image display, calculating the clear height of the detection points through the imaging length, determining the area of the imaging length exceeding the set value as a first performance area, determining the area of the imaging length not exceeding the set value as a second performance area, wherein the first performance area can be expressed as that the surface smoothness of the aluminum alloy ingot is unqualified, and the second performance area can be expressed as that the surface smoothness of the aluminum alloy ingot is qualified.
The step of displaying the detection point on the equal-slope detection surface by using the light generator in an equivalent substitution mode specifically comprises the following steps:
emitting parallel light beams to each set of actually measured distribution detection surfaces through a light generator;
selecting a group of equal-slope detection surfaces, and adjusting the included angle between the light beam of the light generator and the slope inclination mean value of the group of equal-slope detection surfaces to be a; therefore, the measurement error can be reduced to the maximum extent, the angle adjustment of the light generator which can be selected as the average value can be suitable for each actually-measured distribution detection surface in the group of equal-slope detection surfaces, and the detection point conditions of more areas can be detected conveniently by the measurement.
Then, the projection height G = tana × imaging length of the detection point.
Specifically, the displaying a detection point image on the equal-slope detection surface by using the light generator in an equivalent substitution manner, and recording an imaging length of the detection point image after the displaying comprises:
acquiring the starting point position of the formed image and the falling point position of the image, and calculating the distance between the starting point position and the falling point position as the imaging length;
marking a detection point with the imaging length exceeding a set value; when the detection points in some areas are dense, an image of one detection point may be projected onto another detection point, and thus, it is difficult for the visual detection mechanism to clearly determine whether the detection points are overlapped, and when the influence of two detection points has an overlapped part, specifically referring to the schematic situation in fig. 5, in this way, the partially overlapped image is lengthened, and the actual side length is due to the overlapping of the images, so that this phenomenon needs to be treated differently in order to further determine whether the detection points exceeding the set value are generated due to the partial overlapping;
the specific operation mode is as follows:
adjusting the irradiation direction of the light generator, ensuring that the included angle of the light beam of the light generator and the slope average value of the group of equal-slope detection surfaces is a, and promoting the falling point direction of the detection points to fall in the empty point area;
measuring the detection point of which the imaging length exceeds the set value again;
if the imaging length still exceeds the set value, the area where the detection point is located is marked as a first performance area, otherwise, the area is marked as a second performance area.
Further, the causing the falling direction of the detection point to fall in the empty point area specifically includes:
marking the starting position of the imaging length exceeding a set value, establishing a circular identification area by taking the imaging length as a radius, recording the circle as c, and recording the position of a detection point within the radius range; referring specifically to fig. 6, there are 4 detection points within the radius range in fig. 6;
selecting a target line segment, wherein one end of the target line segment is overlapped with the starting point position of which the imaging length exceeds a set value, the other end of the target line segment is intersected with the circle c, and meanwhile, the target line segment is not overlapped with other detection point positions; with particular reference to the example of a target line segment in FIG. 7;
adjusting the irradiation direction of the light generator, ensuring the included angle a between the light beam of the light generator and the slope inclination mean value of the group of equal-slope detection surfaces, and promoting the image of the measurement point to be projected on the target line segment.
Because one end of the target line segment is superposed with the starting point position of the imaging length exceeding the set value, the other end is intersected with the circle c, and meanwhile, the target line segment is not superposed with other detection points, the image formed by the detection point is not superposed with other monitoring points after the parallel light irradiation angle is adjusted, thereby ensuring that the image length detected by the visual detection mechanism accurately represents the actual image distance of the detection point and reducing the phenomenon of misjudgment to a certain extent.
By adjusting the irradiation direction of the light generator, the adjusted influence is caused to fall on the target line segment, and the target line segment cannot cover other detection points in the range near the detection point, so that the measurement error caused by the influence of partial superposition is avoided.
According to the method, the projection degree of the detection point on the top surface of the aluminum alloy ingot can be finally measured through the inflection point information on the first extension line, and correspondingly, the projection degree of the detection point on the bottom surface of the aluminum alloy ingot can be finally measured through the inflection point information on the second extension line.
A system for a method of testing properties of an aluminum alloy, comprising:
a carrying platform for carrying the aluminum alloy;
a light generator for generating parallel light;
and a vision acquisition module for acquiring and calculating the imaging length;
and the controller is used for controlling the light generator and the vision acquisition module to work.
The controller is in communication connection with a memory, and the memory stores instructions executable by the controller so as to enable the processor to execute the performance detection method for the aluminum alloy;
the disclosed embodiments also provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the performance detection method for aluminum alloy in the foregoing method embodiments.
It should be noted that more specific examples of the computer readable storage medium may include a portable computer diskette, a hard disk, an erasable programmable read-only memory (EPROM or flash memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device, the computer readable medium may be contained in the electronic device; or may be separate and not incorporated into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, enable the electronic device to implement the schemes provided by the method embodiments.
Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, or a combination thereof, and may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A performance detection method for aluminum alloy is characterized by comprising the following steps:
s1, determining a surface to be detected of the aluminum alloy, dividing the surface to be detected according to the inclination, and dividing to form a plurality of actually-measured subsection detection surfaces;
s2, setting an inclination threshold, grouping the actually measured distribution detection surfaces according to the inclination threshold, and regarding the actually measured distribution detection surfaces positioned in the same inclination threshold range as equal-slope detection surfaces which are arranged in the same group;
s3, measuring the slope inclination average value of each group of equal-slope detection surfaces;
and S4, displaying the detection point images on the equal-slope detection surface by using an optical generator in an equivalent substitution mode, recording the imaging length of the displayed detection point images, calculating the clear height of the detection point by using the imaging length, setting the area of the imaging length exceeding the set value as a first performance area, and setting the area of the imaging length not exceeding the set value as a second performance area.
2. The method for detecting the performance of the aluminum alloy according to claim 1, wherein the dividing the surface to be detected according to the inclination specifically comprises the following steps:
selecting an adjacent surface vertical to the surface to be detected of the aluminum alloy as an inclination planning surface;
establishing a plane rectangular coordinate system xoy according to the inclination planning surface;
acquiring a connecting line where the upper side and the lower side of the inclination degree planning surface are located, marking the connecting line as a first extension line and a second extension line respectively, marking inflection point coordinates on the first extension line and the second extension line, wherein the inflection point coordinates on the first extension line correspond to the inflection point coordinates on the second extension line one by one;
dividing the surface to be detected into a plurality of subsection detection surfaces according to the coordinates of each inflection point on the first extension line;
and calculating the slope of coordinates of two adjacent inflection points on the first extension line, and calculating the inclination angle of the corresponding distribution detection surface.
3. The method for detecting performance of an aluminum alloy according to claim 2, wherein the calculating the slopes of the coordinates of two adjacent inflection points on the first extension line for calculating the inclination angle of the distribution detection surface corresponding thereto specifically comprises:
obtaining a slope correction line;
a connecting line of coordinates of two adjacent inflection points on the first extension line is regarded as a slope correction line, the distance of the slope correction line is recorded as L, a perpendicular bisector of the slope correction line is made and is intersected with the first extension line, and an intersection point is recorded as a slope correction point;
calculating the distance between the slope correction point and the slope correction line and recording as H;
if it is
In the case of the below 0.01, the inclination of the inclination correction line is regarded as the inclination angle of the distribution detection plane, and the distribution detection plane is regarded as the actually measured distribution detection plane.
4. The method of claim 3, wherein the property is detected if
More than 0.01, dividing the distribution detection surface into two sections by taking the slope correction point as a boundary, and respectively marking the two sections as a first distribution detection surface and a second distribution detection surface;
and regarding the first distribution detection surface and the second distribution detection surface as two actual measurement distribution detection surfaces, and calculating the slope of the slope correction point and the two adjacent inflection point coordinates, wherein the slope correction point and the slope of the two adjacent inflection point coordinates correspond to the inclination angles of the two actual measurement distribution detection surfaces respectively.
5. The method of claim 4, wherein the tilt angles of the respective actually measured distribution detection surfaces are integrated;
setting the inclination threshold value to be 5 degrees;
and selecting actually measured distribution detection surfaces with inclination angle phase difference values of 5 degrees, and arranging the actually measured distribution detection surfaces as a same group.
6. The method for detecting the performance of the aluminum alloy as recited in any one of claims 1 to 5, wherein the step of displaying the detection point on the constant-slope detection surface by an equivalent substitution method using a light generator specifically comprises:
emitting parallel light beams to each set of actually measured distribution detection surfaces through a light generator;
selecting a group of equal-slope detection surfaces, and adjusting the included angle of the light beam of the light generator and the slope average value of the group of equal-slope detection surfaces to be a;
then, the projection height G = tana × imaging length of the detection point.
7. The method as claimed in claim 6, wherein the step of displaying the detected point images on the equal-slope detection surface by equivalent substitution using a light generator and recording the imaging length after the displayed detected point images comprises:
acquiring the starting point position of the formed image and the falling point position of the image, and calculating the distance between the starting point position and the falling point position as the imaging length;
marking a detection point of which the imaging length exceeds a set value;
adjusting the irradiation direction of the light generator, ensuring that the included angle of the light beam of the light generator and the slope inclination mean value of the group of equal-slope detection surfaces is a, and promoting the falling point direction of the detection points to fall in a null point area;
measuring the detection point of which the imaging length exceeds the set value again;
if the imaging length still exceeds the set value, the area where the detection point is located is marked as a first performance area, otherwise, the area is marked as a second performance area.
8. The method for detecting performance of an aluminum alloy as recited in claim 7, wherein the causing the falling direction of the detection point to fall in the empty spot region specifically includes:
marking the starting position of the imaging length exceeding a set value, establishing a circular identification area by taking the imaging length as a radius, recording the circle as c, and recording the position of a detection point within the radius range;
selecting a target line segment, wherein one end of the target line segment is overlapped with the starting point position of which the imaging length exceeds a set value, the other end of the target line segment is intersected with the circle c, and meanwhile, the target line segment is not overlapped with other detection point positions;
adjusting the irradiation direction of the light generator, ensuring the included angle a between the light beam of the light generator and the slope inclination mean value of the group of equal-slope detection surfaces, and promoting the image of the measurement point to be projected on the target line segment.
9. A system for implementing the performance testing method for aluminum alloys of claim 8, comprising:
a carrying platform for carrying the aluminum alloy;
a light generator for generating parallel light;
and a vision acquisition module for acquiring and calculating the imaging length;
and the controller is used for controlling the light generator and the vision acquisition module to work.
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Effective date of registration: 20240710 Address after: 226000, No. 116 Jinqiao West Road, High tech Industrial Development Zone, Nantong City, Jiangsu Province Patentee after: Hongjin New Materials Research (Nantong) Co.,Ltd. Country or region after: China Address before: 226300 Jinqiao Road, Tongzhou Development Zone, Nantong City, Jiangsu Province Patentee before: NANTONG HONGJIN METAL ALUMINUM INDUSTRY CO.,LTD. Country or region before: China |