A method for adaptively adjusting the processing quality of fisheye gaskets

Abstract

The present invention relates to the field of artificial intelligence technology, and specifically to a method for adaptively adjusting the processing quality of fisheye gaskets. The method is based on the top view and side view of the fisheye gasket obtained by stamping processing, and obtains the horizontal tilt angle that characterizes the height difference of the fisheye gasket, and the stamping deviation degree that characterizes the degree of deviation of the impact center point during two impact processes. According to the obtained horizontal tilt angle and stamping deviation degree, and in addition combined with the number of overall burrs of the fisheye gasket, the unqualified degree value of the stamping processing quality of the fisheye gasket is calculated. Based on the unqualified degree value of the stamping processing quality of the obtained fisheye gasket, the processing quality of the fisheye gasket is adaptively adjusted by adjusting the stamping processing speed and adjusting the impact center point during two impact processes. It can be seen that the method can be integrated into a machine tool field bus control system or a machine tool programmable control system, and used for the manufacture of industrial automatic control system devices.

Description

Technical Field

[0001] The invention relates to the field of automatic control technology, and in particular to a method for adaptively adjusting the processing quality of a fisheye gasket. Background Art

[0002] In the field of automated production, fisheye gaskets are different from other gaskets in production. Their unique three-dimensional structure and secondary stamping process make them more prone to defects. Ordinary gaskets are prone to burrs during high-speed stamping, which can be alleviated by reducing the speed. However, fisheye gaskets, as a three-dimensional structure, will not only have burrs during processing, but also if the stamping center deviates during the two stamping processes, the produced fisheye gaskets will have an angle, forming a shape with one side higher and the other side lower, which seriously affects the performance of the fisheye gasket in actual use.

[0003] Therefore, there is an urgent need for an efficient and intelligent fisheye gasket processing quality control method to adaptively adjust the processing process of the fisheye gasket, so as to ensure the finished product quality of the fisheye gasket. Summary of the invention

[0004] The present invention provides a method for adaptively adjusting the processing quality of a fisheye gasket, which is used to solve the problem that the prior art cannot efficiently and intelligently adjust the processing process of the fisheye gasket to improve the processing quality of the fisheye gasket. The technical solution adopted is as follows:

[0005] A method for adaptively adjusting the processing quality of a fisheye gasket of the present invention comprises the following steps:

[0006] The side view and top view of the processed fisheye gasket are collected to obtain the horizontal tilt angle of the fisheye gasket and the degree of stamping deviation during the two stamping processes;

[0007] According to the horizontal tilt angle of the fisheye gasket, calculate the number of burrs on the fisheye gasket as a whole;

[0008] According to the horizontal tilt angle, the degree of stamping deviation and the number of overall burrs, the unqualified degree value of the processing quality of the fisheye gasket is calculated;

[0009] Based on the unqualified processing quality value, the processing quality of the fisheye gasket is adjusted by reducing the stamping speed of the fisheye gasket and adjusting the center point of the second stamping closer to the center point of the first stamping.

[0010] The beneficial effects of the present invention are:

[0011] Based on the top view and side view of the fisheye gasket obtained by stamping, the present invention obtains the horizontal tilt angle that characterizes the height difference of the fisheye gasket, and the stamping deviation degree that characterizes the degree of deviation of the impact center point during the two impact processes, and the obtained horizontal tilt angle and stamping deviation degree, combined with the number of overall burrs of the fisheye gasket, obtains the unqualified degree value of the stamping quality of the fisheye gasket, and based on the obtained unqualified degree value, the processing quality of the fisheye gasket is adaptively adjusted by adjusting the stamping speed and the impact center point. The method can be integrated into a machine tool field bus control system or a machine tool programmable control system, and used for the manufacture of industrial automatic control system devices.

[0012] Furthermore, the method for obtaining the horizontal inclination angle of the fisheye gasket and the degree of stamping deviation during the two stamping processes is as follows:

[0013] Traverse all the collected side views of the fisheye gasket, obtain the maximum height h1 and the minimum height h2 of the fisheye gasket in all side views, and calculate the horizontal tilt angle of the fisheye gasket:

[0014]

[0015] Wherein, θ 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, and d is the inner hole diameter of the fisheye gasket, and the size of the inner hole diameter is determined by the inner hole diameter size set when the stamping equipment performs secondary stamping on the fisheye gasket;

[0016] According to the top view of the fisheye gasket collected, determine the center of the inner hole of the fisheye gasket, and then take the center as the starting point to traverse all angles on the circumference of the inner hole, calculate the distance L between the outermost side of the fisheye gasket and the inner hole at each angle value, and determine the maximum value L in the distance L max And the minimum value L min ;

[0017] According to the determined maximum distance L max And the minimum distance L min , determine the stamping deviation of the fisheye gasket:

[0018]

[0019] Among them, P is the stamping deviation of the fisheye gasket, L max is the maximum distance between the outermost side of the fisheye gasket and the inner hole, L min It is the minimum distance between the outermost side of the fisheye gasket and the inner hole, and D is the diameter of the outermost circle of the fisheye gasket.

[0020] Furthermore, according to the horizontal tilt angle of the fisheye gasket, the method for calculating the number of burrs of the fisheye gasket as a whole is as follows:

[0021] First, use the findline function tool to determine the number of burrs W per unit length on the outermost circle of the fish-eye gasket, and then calculate the total number of burrs on the fish-eye gasket:

[0022]

[0023] Among them, B is the total number of burrs on the fish-eye gasket, d is the inner hole diameter of the fish-eye gasket, θ is the horizontal tilt angle of the fish-eye gasket, D is the diameter of the outermost circle of the fish-eye gasket, and W is the number of burrs per unit length of the fish-eye gasket.

[0024] Furthermore, according to the horizontal tilt angle, stamping deviation degree, and total number of burrs, the method for calculating the unqualified degree value of the processing quality of the fish-eye gasket is as follows:

[0025]

[0026] Among them, Z is the unqualified degree value of the stamping processing quality of the fish-eye gasket, d is the inner hole diameter of the fish-eye gasket, θ is the horizontal tilt angle of the fish-eye gasket, D is the diameter of the outermost circle of the fish-eye gasket, W is the number of burrs per unit length of the fish-eye gasket, P is the stamping deviation degree of the fish-eye gasket, and u1 and u2 are weight coefficients, and their values are obtained through actual measurement and calibration.

[0027] Furthermore, based on the unqualified degree value of the processing quality, the specific process of adjusting the processing quality of the fish-eye gasket by reducing the stamping speed of the fish-eye gasket and adjusting the center point of the second stamping closer to the center point of the first stamping is as follows:

[0028] Set the unqualified degree threshold Z1 of the stamping processing quality of the fish-eye gasket, and the qualified value of the stamping processing quality is Z0, where Z0 < Z1;

[0029] If Z > Z1, then gradually reduce the stamping speed during the subsequent stamping process of the fish-eye gasket, and calculate the unqualified degree value Z of the stamping processing quality after each reduction of the stamping speed n ; when and Z n > Z1, or Z n < Z1, then stop gradually reducing the stamping speed and adjust the stamping center point, where μ is the set threshold and is obtained through actual measurement and calibration;

[0030] If Z0 < Z < Z1, then starting from the center of the inner hole of the fish-eye gasket, along the path where the maximum distance L max is located, move and adjust the stamping center point of the second stamping towards the center of the outermost circle of the fish-eye gasket, and calculate the unqualified degree value Z of the subsequent stamping processing quality in real timen When Z n <Z < 0, stop adjusting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a perspective view of the fish-eye gasket in the present invention;

[0032] Figure 2 is a top view of the fish-eye gasket in the present invention;

[0033] Figure 3 is a side view of the fish-eye gasket with qualified stamping processing quality in the present invention;

[0034] Figure 4 is a side view of the fish-eye gasket with unqualified stamping processing quality in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0035] The concept of the present invention is as follows: by obtaining the top view and side view of the fish-eye gasket, the horizontal inclination angle of the fish-eye gasket and the stamping deviation degree during the two stamping processes are obtained, and in addition, the unqualified degree value of the stamping processing quality of the fish-eye gasket is calculated by combining the number of burrs on the edge of the fish-eye gasket. Guided by the obtained unqualified degree value of the stamping processing quality of the fish-eye gasket, the adaptive adjustment of the processing quality of the fish-eye gasket is completed by reducing the stamping speed of the fish-eye gasket and adjusting the center point of the second stamping to be closer to the center point of the first stamping, ensuring the stamping processing quality of the fish-eye gasket.

[0036] The following will describe in detail an adaptive adjustment method for the processing quality of a fish-eye gasket according to the present invention with reference to the drawings and embodiments.

[0037] Method Embodiment:

[0038] An embodiment of an adaptive adjustment method for the processing quality of a fish-eye gasket according to the present invention is as follows:

[0039] Step 1: Collect the side view and top view of the fish-eye gasket obtained by the current stamping process, and determine the horizontal inclination angle of the fish-eye gasket and the stamping deviation degree during the two stamping processes.

[0040] As Figure 1 shown, it is a three-dimensional structure diagram of the fish-eye gasket. When the processing quality meets the requirements, combined with the top view of the fish-eye gasket shown in the attached Figure 2 figure, it can be seen that the outermost side of the fish-eye gasket is a circle with a diameter of D, and the inner hole is a circle with a diameter of d. Combined with the side view of the fish-eye gasket shown in the attached Figure 3 figure, its overall height is h.

[0041] As shown in the attached Figure 3As shown in the figure, the shape of the fisheye gasket when viewed from the side is approximately trapezoidal. If there is a quality deviation during the processing of the fisheye gasket, such as the stamping center is offset during the two stamping processes, the upper bottom of the trapezoid will tilt in the horizontal direction in the side view of the processed fisheye gasket, making the fisheye gasket appear as shown in the attached figure. Figure 4 The shape shown in the figure is one side high and one side low; at the same time, due to the offset of the stamping center during the two stamping processes, the Figure 2 The distances from the inner hole of the fisheye gasket shown to its outermost side will be uneven, and the shape of the inner hole will also change from circular to elliptical.

[0042] According to the above analysis, the present invention evaluates the processing quality of the fisheye gasket by acquiring relevant information from the top view and the side view of the photographed fisheye gasket.

[0043] 1. Determine the horizontal tilt angle of the fisheye gasket.

[0044] Collect multiple top views and side views of the fisheye gasket at different angles, traverse all the collected side views of the fisheye gasket, and obtain the maximum height h1 and minimum height h2 of the fisheye gasket in all side views. Since the trapezoidal upper bottom and the inner hole of the fisheye gasket in the side view of the fisheye gasket are both formed by the second stamping, the difference between the maximum and minimum heights of the trapezoidal upper bottom is essentially the same as the difference between the maximum and minimum heights of the inner hole of the fisheye gasket. The horizontal tilt angle of the fisheye gasket can be determined as follows:

[0045]

[0046] Among them, θ is the horizontal inclination angle of the fisheye gasket, h1 and h2 are the maximum height and minimum height of the fisheye gasket respectively, and d is the inner hole diameter of the fisheye gasket. The size of the inner hole diameter is determined by the inner hole diameter set when the stamping equipment performs secondary stamping on the fisheye gasket.

[0047] 2. Determine the degree of stamping deviation of the fisheye gasket.

[0048] Although the inner hole of the fisheye gasket will change from a standard circle to an ellipse due to stamping deviation, this change in shape is actually caused by the different heights in the vertical direction at different positions. Therefore, from the top view, the inner hole of the fisheye gasket is still circular even if the stamping center is offset during the two stamping processes.

[0049] The top view of the fisheye gasket collected is subjected to image filtering and sharpening processing, so that the fisheye gasket is highlighted in the top view of the fisheye gasket collected, and then the center of the inner hole of the fisheye gasket is determined through image processing, and then the center of the circle is used as the starting point to traverse various angles on the circumference of the inner hole, and the distance L between the outermost side of the fisheye gasket and the inner hole at each angle value is calculated, and the maximum value L in the distance L is determinedmax And the minimum value L min .

[0050] The above method for determining the center position of the inner hole of the fisheye gasket and the distance L based on the collected top view of the fisheye gasket may adopt any method in the prior art and will not be described in detail here.

[0051] According to the determined maximum distance L max And the minimum distance L min , determine the stamping deviation of the fisheye gasket:

[0052]

[0053] Among them, P is the stamping deviation of the fisheye gasket, L max is the maximum distance between the outermost side of the fisheye gasket and the inner hole, L min It is the minimum distance between the outermost side of the fisheye gasket and the inner hole, and D is the diameter of the outermost circle of the fisheye gasket.

[0054] Step 2: Determine the unqualified degree value of the stamping processing quality of the fisheye gasket according to the horizontal inclination angle, stamping deviation degree and edge burr degree of the fisheye gasket.

[0055] First, use the findline function tool to determine Figure 2 The number of burrs per unit length W on the outermost circular circumference of the fisheye gasket shown, and then the overall burr number of the fisheye gasket is calculated:

[0056]

[0057] Among them, B is the number of burrs on the fisheye gasket as a whole, d is the inner hole diameter of the fisheye gasket, θ is the horizontal inclination angle of the fisheye gasket, D is the diameter of the outermost circle of the fisheye gasket, and W is the number of burrs per unit length of the fisheye gasket.

[0058] According to the number of burrs on the fisheye gasket as a whole and the degree of stamping deviation, the unqualified degree value of the stamping processing quality of the fisheye gasket is calculated:

[0059]

[0060] Among them, Z is the unqualified degree value of the stamping processing quality of the fisheye gasket, d is the inner hole diameter of the fisheye gasket, θ is the horizontal inclination angle of the fisheye gasket, D is the diameter of the outermost circle of the fisheye gasket, W is the number of burrs per unit length of the fisheye gasket, P is the stamping deviation degree of the fisheye gasket, u1 and u2 are weight coefficients, and their values ​​are obtained through actual measurement and calibration.

[0061] Step 3: Adjust the stamping parameters in the subsequent stamping process of the fish-eye gasket according to the unqualified degree value of the stamping quality of the fish-eye gasket.

[0062] First, set the unqualified degree threshold Z1 of the stamping quality of the fish-eye gasket and the qualified value Z0 of the stamping quality, where Z0 < Z1.

[0063] When the calculated unqualified degree value Z of the stamping quality of the fish-eye gasket is greater than the unqualified degree threshold Z1 of the stamping quality of the fish-eye gasket, gradually reduce the stamping speed in the subsequent processing process. By reducing the stamping speed, the number of burrs is reduced, thereby reducing the unqualified degree value Z of the stamping quality of the fish-eye gasket, and calculate the unqualified degree value Z of each time after reducing the stamping speed. n ;

[0064] When and Z n > Z1, or Z n < Z1, stop gradually reducing the stamping speed and perform the subsequent adjustment of the stamping center point.

[0065] If Z0 < Z < Z1, in each subsequent stamping process, starting from the center of the inner hole of the fish-eye gasket, along the path where the maximum distance L max is located, move and adjust the stamping center point of the second stamping process towards the center of the outermost circle of the fish-eye gasket, and calculate the unqualified degree value Z of each subsequent stamping process in real time. n , when Z n < Z0, stop the adjustment.

[0066] Overall, the present invention obtains the horizontal tilt angle of the fish-eye gasket and the stamping deviation degree of the two stamping processes during the stamping process by obtaining the image of the fish-eye gasket, and calculates the unqualified degree value of the stamping quality of the fish-eye gasket from the horizontal tilt angle and the stamping deviation degree. Guided by the unqualified degree value of the stamping quality, the stamping parameters of the subsequent fish-eye gasket stamping process are adjusted to keep the stamping quality of the fish-eye gasket qualified, and finally the adaptive adjustment of the processing quality of the fish-eye gasket is completed.

[0067] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for adaptively adjusting the processing quality of a fisheye gasket, characterized in that: The following steps are involved: The side view and top view of the processed fisheye gasket are collected to obtain the horizontal tilt angle of the fisheye gasket and the degree of stamping deviation during the two stamping processes; According to the horizontal tilt angle of the fisheye gasket, calculate the number of burrs on the fisheye gasket as a whole; According to the horizontal tilt angle, the degree of stamping deviation and the number of overall burrs, the unqualified degree value of the processing quality of the fisheye gasket is calculated; Based on the unqualified processing quality value, the processing quality of the fisheye gasket is adjusted by reducing the stamping speed of the fisheye gasket and adjusting the second stamping center point closer to the first stamping center point; Among them, the method for obtaining the horizontal inclination angle of the fisheye gasket and the degree of stamping deviation during the two stamping processes is: Traverse all the side views of the fisheye gasket collected, obtain the maximum height h1 and the minimum height h2 of the fisheye gasket in all side views, and calculate the horizontal tilt angle of the fisheye gasket: Wherein, θ 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, and d is the inner hole diameter of the fisheye gasket, and the size of the inner hole diameter is determined by the inner hole diameter size set when the stamping equipment performs secondary stamping on the fisheye gasket; According to the top view of the fisheye gasket collected, determine the center of the inner hole of the fisheye gasket, and then take the center as the starting point to traverse all angles on the circumference of the inner hole, calculate the distance L between the outermost side of the fisheye gasket and the inner hole at each angle value, and determine the maximum value L in the distance L max And the minimum value L min ; According to the determined maximum distance L max And the minimum distance L min , determine the stamping deviation of the fisheye gasket: Among them, P is the stamping deviation of the fisheye gasket, L max is the maximum distance between the outermost side of the fisheye gasket and the inner hole, L min is the minimum distance between the outermost side of the fisheye gasket and the inner hole, and D is the diameter of the outermost circle of the fisheye gasket; According to the horizontal tilt angle of the fisheye gasket, the method for calculating the overall burr quantity of the fisheye gasket is: First, use the findline function tool to determine the number of burrs per unit length W on the outermost circle of the fisheye gasket, and then calculate the overall burr number of the fisheye gasket: Among them, B is the number of burrs on the fisheye gasket as a whole, d is the inner hole diameter of the fisheye gasket, θ is the horizontal inclination angle of the fisheye gasket, D is the diameter of the outermost circle of the fisheye gasket, and W is the number of burrs per unit length of the fisheye gasket.

2. The method for adaptively adjusting the processing quality of fisheye gaskets according to claim 1, characterized in that: According to the horizontal inclination angle, the degree of stamping deviation and the number of overall burrs, the method for calculating the unqualified degree value of the processing quality of the fisheye gasket is as follows: Among them, Z is the unqualified degree value of the stamping processing quality of the fisheye gasket, d is the inner hole diameter of the fisheye gasket, θ is the horizontal inclination angle of the fisheye gasket, D is the diameter of the outermost circle of the fisheye gasket, W is the number of burrs per unit length of the fisheye gasket, P is the stamping deviation degree of the fisheye gasket, u1 and u2 are weight coefficients, and their values ​​are obtained through actual measurement and calibration.

3. The method for adaptively adjusting the processing quality of fisheye gaskets according to claim 2, characterized in that: Based on the unqualified processing quality value, the specific process of adjusting the processing quality of the fisheye gasket is as follows: The unqualified threshold value Z1 of the stamping quality of the fisheye gasket is set, and the qualified value of the stamping quality is Z0, Z0<Z1; If Z > Z1, then during subsequent stamping processes of the fish-eye gasket, gradually reduce the stamping speed, and calculate the non-conformance degree value Z of each stamping process after reducing the stamping speed. n ; When and Z n > Z1, or Z n < Z1, then stop gradually reducing the stamping speed and adjust the stamping center point, where μ is a set threshold value obtained through actual measurement and calibration. If Z0 < Z < Z1, starting from the center of the inner hole of the fish-eye gasket, along the path where the maximum distance L is located, move and adjust the stamping center point of the second stamping process towards the center of the outermost circle of the fish-eye gasket, and calculate the non-conformance degree value Z of each subsequent stamping process in real time. max When Z < Z0, stop the adjustment. n When Z n < Z0, stop the adjustment.

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