CN114998204A - Self-adaptive adjustment method for processing quality of fisheye gasket - Google Patents
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Abstract
The invention relates to the technical field of artificial intelligence, in particular to a fisheye gasket processing quality self-adaptive adjusting method, which is characterized in that a horizontal inclination angle representing the height difference of a fisheye gasket and a stamping deviation degree representing the deviation degree of an impact central point in two times of impact processing processes are obtained based on a top view and a side view of the fisheye gasket obtained by collected stamping processing, a stamping processing quality unqualified level value of the fisheye gasket is obtained according to the obtained horizontal inclination angle and the stamping deviation degree and by additionally combining the integral burr quantity of the fisheye gasket, and the self-adaptive adjustment of the fisheye gasket processing quality is completed by adjusting the stamping processing speed and adjusting the impact central point in the two times of impact processing processes according to the obtained stamping processing quality unqualified level value of the fisheye gasket. It can be seen that the method can be integrated into a machine fieldbus control system or a machine programmable control system and used in the manufacture of industrial automation system devices.
Description
Technical Field
The invention relates to the technical field of automatic control, in particular to a self-adaptive adjustment method for processing quality of a fisheye gasket.
Background
In the automated production field, the flake gasket is different from the production of other gaskets, the flaw is more likely to appear in its unique spatial structure and secondary punching press processing technology, ordinary gasket produces the burr at the in-process of high-speed punching press easily, can alleviate this kind of situation through the deceleration, and the part of this spatial structure of flake gasket, burr not only can appear in the course of working, and the flake gasket that will make the output appears deviating if the punching press center appears in the in-process of punching press twice, form the shape that one side is high low, seriously influence the performance of flake gasket in-service use.
Therefore, an efficient and intelligent fisheye gasket processing quality control method is urgently needed to perform adaptive adjustment on the fisheye gasket processing process so as to ensure the finished product quality of the fisheye gasket.
Disclosure of Invention
The invention provides a self-adaptive adjustment method for the processing quality of a fisheye gasket, which is used for solving the problem that the prior art cannot efficiently and intelligently adjust the processing process of the fisheye gasket so as to improve the processing quality of the fisheye gasket, and adopts the following technical scheme:
the invention discloses a self-adaptive adjustment method for the processing quality of a fisheye gasket, which comprises the following steps:
collecting a side view and a top view of the fisheye pad obtained by processing to obtain a horizontal inclination angle of the fisheye pad and a stamping deviation degree in the two stamping processes;
calculating the integral burr quantity of the fisheye gasket according to the horizontal inclination angle of the fisheye gasket;
calculating the unqualified degree value of the processing quality of the fisheye gasket according to the horizontal inclination angle, the stamping deviation degree and the integral burr quantity;
and adjusting the processing quality of the fisheye gasket by reducing the punching speed of the fisheye gasket and an adjusting method for enabling the second punching central point to be close to the first punching central point on the basis of the unqualified degree value of the processing quality.
The invention has the beneficial effects that:
according to the fisheye gasket processing method, based on the collected top view and side view of the fisheye gasket obtained through stamping, a horizontal inclination angle representing the height difference of the fisheye gasket and a stamping deviation degree representing the deviation degree of an impact central point in two-time impact processing processes are obtained, and the unqualified degree value of the stamping quality of the fisheye gasket is obtained through calculation by additionally combining the obtained horizontal inclination angle and the stamping deviation degree with the integral burr quantity of the fisheye gasket, and the self-adaptive adjustment of the processing quality of the fisheye gasket is completed through adjusting the stamping speed and the impact central point on the basis of the obtained unqualified degree value. The method can be integrated into a field bus control system of a machine tool or a programmable control system of the machine tool and is used for manufacturing industrial automatic control system devices.
Further, the method for obtaining the horizontal inclination angle of the fisheye pad and the stamping deviation degree in the two stamping processes comprises the following steps:
traversing all the collected side views of the fisheye pad, acquiring the maximum height h1 and the minimum height h2 of the fisheye pad in all the side views, and calculating the horizontal inclination angle of the fisheye pad:
wherein theta is a horizontal inclination angle of the fisheye gasket, h1 and h2 are respectively a maximum height value and a minimum height value of the fisheye gasket, d is the diameter of an inner hole of the fisheye gasket, and the diameter of the inner hole is determined by the diameter of the inner hole set when the fisheye gasket is subjected to secondary stamping by stamping equipment;
determining the circle center of the inner hole of the fisheye gasket according to the acquired top view of the fisheye gasket, traversing each angle on the circumference of the inner hole by taking the circle center as a starting point, calculating the distance L from the outermost side of the fisheye gasket to the inner hole under each angle value, and determining the maximum value L in the distance L max And a minimum value L min ；
According to whatDetermined maximum value of distance L max And a minimum value of distance L min And determining the punching deviation degree of the fisheye gasket:
wherein P is the punching deviation degree of the fisheye gasket, L max Is the maximum distance between the outermost side of the fisheye pad and the inner hole, L min The minimum distance between the outermost side of the fisheye gasket and the inner hole, and D is the diameter of the outermost side circle of the fisheye gasket.
Further, according to the horizontal inclination angle of the fisheye gasket, the method for calculating the number of the burrs on the whole fisheye gasket comprises the following steps:
firstly, determining the burr quantity W of the fisheye pad on the outermost circle and under the unit length by using a findline function tool, and then calculating the integral burr quantity of the fisheye pad:
wherein, B is the whole burr quantity of fisheye gasket, and D is fisheye gasket hole diameter, and theta is the horizontal inclination of fisheye gasket, and D is the circular diameter in fisheye gasket outermost side, and W is the burr quantity under the fisheye gasket unit length.
Further, the method for calculating the unqualified degree value of the processing quality of the fisheye gasket according to the horizontal inclination angle, the stamping deviation degree and the integral burr number comprises the following steps:
wherein Z is the unqualified degree value of the punching processing quality of the fisheye gasket, D is the diameter of an inner hole of the fisheye gasket, theta is the horizontal inclination angle of the fisheye gasket, D is the diameter of the outermost circle of the fisheye gasket, W is the burr quantity of the fisheye gasket in unit length, P is the punching deviation degree of the fisheye gasket, u is the punching deviation degree of the fisheye gasket, and 1 and u 2 And the weight coefficient is obtained by actually measuring and calibrating.
Further, by using the unqualified degree value of the processing quality as a basis, the processing quality of the fisheye gasket is adjusted by reducing the punching speed of the fisheye gasket and by an adjusting method of enabling the second punching central point to be close to the first punching central point, and the specific process of adjusting the processing quality of the fisheye gasket is as follows:
setting a threshold value Z of the degree of failure of the punching quality of a fisheye pad 1 The qualified value of the stamping quality is Z 0 ，Z 0 ＜Z 1 ；
If Z > Z 1 Successively reducing the stamping speed in the subsequent stamping process of the fisheye gasket, and calculating the stamping quality unqualified degree value Z of each time after the stamping speed is reduced n (ii) a When the temperature is higher than the set temperature
And Z is n >Z 1 Or Z is n <Z 1 Stopping gradually reducing the stamping speed, and adjusting the stamping central point, wherein mu is a set threshold value and is obtained by actual measurement calibration;
if Z is 0 ＜Z＜Z 1 Starting from the center of the inner hole of the fisheye pad, and following the maximum distance L max Moving and adjusting the stamping central point of the second stamping towards the circle center of the outermost circle of the fisheye gasket in the path, and calculating the unqualified degree value Z of the quality of each subsequent stamping in real time n When Z is n <Z 0 When so, the adjustment is stopped.
Drawings
FIG. 1 is a perspective view of a fish-eye pad of the present invention;
FIG. 2 is a top view of the fish-eye pad of the present invention;
FIG. 3 is a side view of a fisheye pad of acceptable stamping quality according to the invention;
fig. 4 is a side view of a fisheye pad of unacceptable stamping quality according to the invention.
Detailed Description
The conception of the invention is as follows: the horizontal inclination angle of the fisheye gasket and the stamping deviation degree in the two stamping processes are obtained by obtaining the top view and the side view of the fisheye gasket, the unqualified degree value of the stamping quality of the fisheye gasket is obtained by additionally combining the edge burr quantity of the fisheye gasket, the unqualified degree value of the stamping quality of the fisheye gasket is taken as a guide, the fisheye gasket stamping speed is reduced, and the second stamping central point is close to the first stamping central point by an adjusting method, so that the self-adaptive adjustment of the processing quality of the fisheye gasket is completed, and the stamping quality of the fisheye gasket is ensured.
The following describes a method for adaptively adjusting the processing quality of a fisheye pad according to the present invention with reference to the accompanying drawings and embodiments.
The method comprises the following steps:
the embodiment of the self-adaptive adjusting method for the processing quality of the fisheye gasket comprises the following specific processes:
the method comprises the following steps: and acquiring a side view and a top view of the fisheye pad obtained by current stamping processing, and determining the horizontal inclination angle of the fisheye pad and the stamping deviation degree in the two stamping processes.
As shown in fig. 1, which is a three-dimensional structure diagram of a fisheye gasket, when the processing quality meets the requirement, the outermost side of the fisheye gasket is a circle with a diameter D, and the inner hole is a circle with a diameter D, as can be seen from the top view of the fisheye gasket shown in fig. 2, and the overall height of the fisheye gasket is h, as can be seen from the side view of the fisheye gasket shown in fig. 3.
As shown in fig. 3, the fisheye pad is approximately trapezoidal when viewed from the side, and if a quality deviation occurs in the fisheye pad processing process, and if a stamping center is shifted in the two stamping processes, in a side view of the processed fisheye pad, an upper bottom of the trapezoid is inclined in the horizontal direction, so that the fisheye pad takes a shape with one side higher and one side lower as shown in fig. 4; meanwhile, since the punching centers in the two punching processes are shifted, distances from all positions of the inner hole of the fisheye pad to the outermost side of the inner hole are unequal as shown in fig. 2, and the shape of the inner hole is changed from a circle to an ellipse.
From the above analysis, the present invention evaluates the processing quality of the fisheye pad by acquiring relevant information from the photographed top view and side view of the fisheye pad.
1. And determining the horizontal inclination angle of the fisheye pad.
The method comprises the steps of collecting top views and side views of a plurality of fisheye gaskets at different angles, traversing all the collected side views of the fisheye gaskets, and obtaining the maximum height h1 and the minimum height h2 of the fisheye gaskets in all the side views, wherein the maximum height h1 and the minimum height h2 of the fisheye gaskets in all the side views are formed by secondary punching, so that the difference between the maximum height and the minimum height of the trapezoidal upper bottom is substantially the same as the difference between the maximum height and the minimum height of the inner hole of the fisheye gasket. From this the horizontal tilt angle of the fisheye pad can be determined:
wherein, theta is the horizontal inclination angle of the fisheye gasket, h1 and h2 are the maximum height value and the minimum height value of the fisheye gasket respectively, d is the inner hole diameter of the fisheye gasket, and the size of the inner hole diameter is determined by the size of the inner hole diameter set when the secondary punching is carried out on the fisheye gasket by the punching equipment.
2. The punch deviation degree of the fisheye pad is determined.
Although the inner hole of the fisheye pad changes from a standard circular shape to an oval shape due to stamping deviations, the change of the shape is actually caused by the difference of the heights of different positions in the vertical direction, so that the inner hole of the fisheye pad is still circular in a top view even if the stamping center is shifted in the two stamping processes.
Carrying out image filtering sharpening processing on the acquired top view of the fisheye pad to enable the fisheye pad to be highlighted and displayed in the acquired top view of the fisheye pad, then determining the circle center of an inner hole of the fisheye pad through image processing, and traversing each angle on the circumference of the inner hole by taking the circle center as a starting pointCalculating the distance L from the outermost side of the fisheye pad to the inner hole under each angle value, and determining the maximum value L in the distance L max And a minimum value L min 。
The above method for determining the position of the center of the inner hole of the fisheye pad and determining the distance L according to the collected top view of the fisheye pad can adopt any method in the prior art, and details are not repeated here.
According to the determined maximum value L of the distance max And a minimum value of distance L min And determining the punching deviation degree of the fisheye gasket:
wherein P is the punching deviation degree of the fisheye gasket, L max Is the maximum distance between the outermost side of the fisheye pad and the inner hole, L min The minimum distance between the outermost side of the fisheye gasket and the inner hole, and D is the diameter of the outermost side circle of the fisheye gasket.
And step two, determining the unqualified degree value of the punching processing quality of the fisheye gasket according to the horizontal inclination angle, the punching deviation degree and the edge burr degree of the fisheye gasket.
Firstly, determining the burr quantity W of the fisheye pad in unit length on the outermost circular circumference of the fisheye pad shown in fig. 2 by using a findline function tool, and then calculating the integral burr quantity of the fisheye pad:
wherein, B is the whole burr quantity of fisheye gasket, and D is fisheye gasket hole diameter, and theta is fisheye gasket's horizontal inclination, and D is fisheye gasket outside circular diameter, and W is the burr quantity under the fisheye gasket unit length.
According to the integral burr quantity and the punching deviation degree of the fisheye gasket, calculating the unqualified degree value of the punching quality of the fisheye gasket:
wherein Z is the unqualified degree value of the punching processing quality of the fisheye gasket, D is the diameter of an inner hole of the fisheye gasket, theta is the horizontal inclination angle of the fisheye gasket, D is the diameter of the outermost circle of the fisheye gasket, W is the burr quantity of the fisheye gasket in unit length, P is the punching deviation degree of the fisheye gasket, u is the punching deviation degree of the fisheye gasket, and 1 and u 2 And the weight coefficient is obtained by actually measuring and calibrating.
And step three, adjusting the stamping parameters in the subsequent stamping process of the fisheye gasket according to the unqualified degree value of the stamping quality of the fisheye gasket.
First, a threshold value Z of the degree of failure of the punching quality of the fisheye pad is set 1 And a passing value Z of press working quality 0 Wherein Z is 0 ＜Z 1 。
When the calculated unqualified degree value Z of the punching processing quality of the fisheye gasket is larger than the unqualified degree threshold value Z of the punching processing quality of the fisheye gasket 1 Gradually reducing the stamping speed in the subsequent processing process, reducing the number of burrs by reducing the stamping speed so as to reduce the unqualified degree value Z of the stamping quality of the fisheye gasket, and calculating the unqualified degree value Z of the stamping quality of each time after the stamping speed is reduced n ；
When in use
And Z is n >Z 1 Or Z is n <Z 1 Then, the successive reduction of the press working speed is stopped, and the subsequent adjustment of the press center point is performed.
If Z is 0 ＜Z＜Z 1 Then, in each subsequent stamping process, the center of the inner hole of the fisheye pad is taken as a starting point along the maximum distance L max The punching central point of the second punching process is directed to the outermost circular circle of the fisheye gasketThe heart is movably adjusted, and the unqualified degree value Z of the quality of each subsequent stamping process is calculated in real time n When Z is n <Z 0 When so, the adjustment is stopped.
In an overall view, the fisheye gasket horizontal inclination angle and the stamping deviation degree of the two stamping processes in the stamping process can be represented by the fisheye gasket image obtaining method, the unqualified stamping quality degree value of the fisheye gasket is obtained through calculation of the horizontal inclination angle and the stamping deviation degree, the unqualified stamping quality degree value serves as guidance, the subsequent fisheye gasket stamping processing parameters are adjusted to enable the stamping processing quality of the fisheye gasket to be qualified, and finally the self-adaptive adjustment of the fisheye gasket processing quality is completed.
The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present application, and they should be construed as being included in the present application.
Claims (5)
1. A self-adaptive adjustment method for processing quality of a fisheye gasket is characterized by comprising the following steps:
collecting a side view and a top view of the fisheye pad obtained by processing to obtain a horizontal inclination angle of the fisheye pad and a stamping deviation degree in the two stamping processes;
calculating the integral burr quantity of the fisheye gasket according to the horizontal inclination angle of the fisheye gasket;
calculating the unqualified degree value of the processing quality of the fisheye gasket according to the horizontal inclination angle, the stamping deviation degree and the integral burr quantity;
and adjusting the processing quality of the fisheye gasket by reducing the punching speed of the fisheye gasket and an adjusting method of enabling the second punching central point to be close to the first punching central point on the basis of the unqualified degree value of the processing quality.
2. The fisheye pad processing quality adaptive adjustment method of claim 1, wherein the method for obtaining the fisheye pad horizontal inclination angle and the stamping deviation degree in the two stamping processes comprises the following steps:
traversing all the collected side views of the fisheye pad, acquiring the maximum height h1 and the minimum height h2 of the fisheye pad in all the side views, and calculating the horizontal inclination angle of the fisheye pad:
the method comprises the following steps that theta is a horizontal inclination angle of a fisheye gasket, h1 and h2 are respectively a maximum height value and a minimum height value of the fisheye gasket, d is the diameter of an inner hole of the fisheye gasket, and the diameter of the inner hole is determined by the diameter of the inner hole set when secondary punching is carried out on the fisheye gasket by punching equipment;
determining the circle center of the inner hole of the fisheye gasket according to the collected top view of the fisheye gasket, traversing each angle on the circumference of the inner hole by taking the circle center as a starting point, calculating the distance L from the outermost side of the fisheye gasket to the inner hole under each angle value, and determining the maximum value L in the distances L max And a minimum value L min ；
According to the determined maximum value L of the distance max And a minimum value of distance L min And determining the punching deviation degree of the fisheye gasket:
wherein P is the punching deviation degree of the fisheye gasket, L max Is the maximum distance between the outermost side of the fisheye pad and the inner hole, L min Is the minimum distance from the outermost side of the fisheye pad to the inner hole, and D is the outermost side of the fisheye padThe diameter of the circle.
3. The fisheye pad processing quality adaptive adjustment method according to claim 1 or 2, characterized in that the method for calculating the overall burr quantity of the fisheye pad according to the horizontal inclination angle of the fisheye pad comprises the following steps:
firstly, determining the burr quantity W of the fisheye pad on the outermost circle and under the unit length by using a findline function tool, and then calculating the integral burr quantity of the fisheye pad:
wherein, B is the whole burr quantity of fisheye gasket, and D is fisheye gasket hole diameter, and theta is the horizontal inclination of fisheye gasket, and D is the circular diameter in fisheye gasket outermost side, and W is the burr quantity under the fisheye gasket unit length.
4. The adaptive fisheye gasket processing quality adjusting method of claim 3, wherein the method for calculating the unqualified degree value of the fisheye gasket processing quality according to the horizontal inclination angle, the stamping deviation degree and the overall burr quantity comprises the following steps:
wherein Z is the unqualified degree value of the stamping quality of the fisheye gasket, D is the diameter of an inner hole of the fisheye gasket, theta is the horizontal inclination angle of the fisheye gasket, D is the diameter of the outermost circle of the fisheye gasket, W is the burr number of the fisheye gasket under the unit length, P is the stamping deviation degree of the fisheye gasket, u is the stamping deviation degree of the fisheye gasket, and D is the stamping deviation degree of the fisheye gasket 1 And u 2 And the weight coefficient is obtained by actually measuring and calibrating the value of the weight coefficient.
5. The fisheye gasket processing quality self-adaptive adjusting method according to claim 4, wherein the fisheye gasket processing quality is adjusted by reducing the fisheye gasket punching speed and by the adjusting method of approaching the second punching center point to the first punching center point according to the processing quality unqualified degree value:
setting unqualified degree threshold value Z of stamping quality of fisheye gasket 1 The qualified value of the stamping quality is Z 0 ，Z 0 ＜Z 1 ；
If Z > Z 1 Then, the punching speed is gradually reduced in the subsequent punching process of the fisheye gasket, and the unqualified degree value Z of the punching quality of each time after the punching speed is reduced is calculated n (ii) a When in use
And Z is n >Z 1 Or Z n <Z 1 Stopping gradually reducing the stamping speed, and adjusting the stamping central point, wherein mu is a set threshold value and is obtained by actual measurement calibration;
if Z is 0 ＜Z＜Z 1 Starting from the center of the inner hole of the fisheye pad, and following the maximum distance L max Moving and adjusting the stamping central point of the second stamping towards the circle center of the outermost circle of the fisheye gasket in the path, and calculating the unqualified degree value Z of the quality of each subsequent stamping in real time n When Z is n <Z 0 When so, the adjustment is stopped.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117252866A (en) * | 2023-11-14 | 2023-12-19 | 山东迪格重工机械有限公司 | Numerical control stamping forming self-adjustment operation detection method based on image recognition |
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