A design matching method, device and equipment of a high-speed punch riveting die and a storage medium

Abstract

A design matching method of high-speed punch riveting die, comprising the following steps: S1: quantifying the size of the head end of the die end part; S2: calculating the theoretical volume V1 of the head end of the die end part according to the size of the head end of the die end part; S3: introducing a correction coefficient K according to the design tolerance or manufacturing precision of the head end of the die end part to obtain the corrected volume V2 of the head end of the die end part; S4: presetting the size priority order of the forming chamber of the punch riveting die to obtain the matching volume V3 of the forming chamber under the corresponding size; S5: judging the relationship between the matching volume V3 of the forming chamber and the corrected volume V2 of the head end of the die end part; if the matching volume V3 is within the allowable deviation range based on the corrected volume V2, S7 is performed; if the matching volume V3 exceeds the allowable deviation range based on the corrected volume V2, S6 is performed; S6: adjusting the size of the forming chamber with lower priority from low priority to high priority to obtain the transformed matching volume V3, and returning to S5; S7: completing the design matching of the punch riveting die.

Description

Technical Field

[0001] This application relates to a design matching method, apparatus, equipment, and storage medium for high-speed stamping riveting dies. Background Technology

[0002] In the field of riveting, the parts used for riveting typically include the riveted part and the die end part. The riveted part is provided with a pre-drilled hole for the die end part to pass through. The die end part includes a head end and an upsetting part. The riveting device typically includes a stamping die and a pressure device. The stamping die provides a forming chamber for the die end part. Before riveting, the riveted part is placed on the top surface of the stamping die and on the upper side of the forming chamber. The head end of the die end part is placed in the forming chamber, and the upsetting part passes through the pre-drilled hole. During riveting, the pressure device acts on the upsetting part of the die end part, so that the head end of the die end part fills the forming chamber. The upsetting part deforms and expands under pressure and is fastened together with the head end of the die end part to the spring, so as to achieve the fastening of the die end part to the riveted part.

[0003] Currently, the design and matching of stamping riveting dies and riveted parts requires high precision and relies heavily on the personal experience of technicians. Furthermore, existing design data often lacks emphasis on key design elements, easily leading to riveting gaps between the head end of the die and the riveted part, resulting in poor riveting. For example, consider contacts and springs... Figure 1A and Figure 1B As shown, when there is a riveting gap between the contact as a mold end part and the spring, when the current passes through the contact spring with insufficient riveting tightness, a high resistance area will be generated at the connection between the contact and the spring and the temperature will rise rapidly, eventually causing the relay to fail. This is caused by the contact overheating, the deterioration of the spring elasticity, and ultimately the early welding failure of the product's electrical life.

[0004] In addition, high-speed stamping riveting dies have a SPM (strokes per minute) of at least 400 or more. Therefore, compared with manual stamping riveting dies used at low speeds, high-speed stamping riveting dies must also ensure production quality during high-speed production. This means achieving a balance between the three aspects: the die end parts falling quickly into the riveting die, the die end parts making stable contact with the stamping riveting die, and the die end parts achieving seamless riveting with the riveted parts.

[0005] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a design matching method, device, equipment and storage medium for high-speed stamping riveting dies. Based on the dimensions of the head end of the die end part, it provides a reference for the early design of stamping riveting dies and a reference for their selection in later production. By quantifying data, it avoids blind matching, effectively improves the problem of poor riveting gap between the die end part and the riveted part, and improves production quality.

[0007] The first aspect of the present invention provides a design matching method for high-speed stamping riveting dies, comprising:

[0008] S1: Dimensions of the head end of the mold part on the quantitative drawing;

[0009] S2: Calculate the theoretical volume V1 of the head end of the mold part based on the dimensions of the head end of the mold part;

[0010] S3: Based on the design tolerance or manufacturing precision of the head end of the mold part, introduce the correction coefficient K to obtain the correction volume V2 = K * V1 of the head end of the mold part;

[0011] S4: Preset the priority order of the forming chamber size of the stamping riveting die, and design the forming chamber size of the stamping riveting die step by step from high priority to low priority to obtain the matching volume V3 of the forming chamber under the corresponding size;

[0012] S5: Determine the relationship between the matching volume V3 of the molding chamber and the corrected volume V2 of the head end of the mold end part;

[0013] If the matching volume V3 of the molding chamber is within the allowable deviation range based on the corrected volume V2 of the head end of the mold end part, then proceed to S7;

[0014] If the matching volume V3 of the molding chamber exceeds the allowable deviation range based on the corrected volume V2 of the head end of the mold end part, then proceed to S6;

[0015] S6: Based on the nominal size of the molding cavity designed by the mold, adjust the size of the molding cavity with lower priority from low priority to high priority, obtain the transformed matching volume V3, and return to S5;

[0016] S7: Complete the design and matching of the stamping and riveting die.

[0017] Using the above methods, the dimensions of the head end of the die-end part and the forming chamber dimensions of the stamping riveting die were quantified. By setting the priority order of the forming chamber dimensions, the important factors affecting the gap between the die-end part and the riveted part after riveting were identified. This approach guided the design of the forming chamber dimensions and achieved a precise match between the forming chamber matching volume V3 of the stamping riveting die and the corrected volume V2 of the head end of the die-end part. This improved production efficiency while ensuring production quality.

[0018] A second aspect of the present invention provides a high-speed stamping riveting die matching device, comprising:

[0019] The mold end part data module is configured to input the head end size and correction coefficient K of the mold end part, and generate the theoretical volume V1 and the corrected volume V2 of the head end of the mold end part.

[0020] The molding chamber calculation module is configured to support input of molding chamber dimensions in order to generate a matching volume V3 for the molding chamber.

[0021] Using the above-mentioned device, the corrected volume V2 of the die end part head and the matching volume V3 of the forming cavity can be automatically calculated based on the input dimensions of the die end part head and the forming cavity, respectively. Then, based on the deviation between the corrected volume V2 and the matching volume V3, the matching volume V3 of the forming cavity is adjusted from the low-priority forming cavity dimensions. This quantifies and simplifies the adaptation between the stamping riveting die and the die end part, clarifies the forming cavity dimensions that should be adjusted first, saves engineers' design time, and saves material waste caused by the mismatch between the stamping riveting die and the die end part.

[0022] A third aspect of the present invention provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the program to implement the method described in the first aspect.

[0023] A fourth aspect of the present invention provides a storage medium storing a computer program that, when executed by a processor, implements the stamping and riveting die matching method as described in the first aspect. Attached Figure Description

[0024] The specific description given as a non-limiting example better explains what this application includes and how it can be implemented; furthermore, the description refers to the accompanying drawings, in which:

[0025] Figure 1A This is a schematic diagram of poor contact riveting gap under a microscope, provided in an embodiment of this application.

[0026] Figure 1B This is a schematic diagram of qualified contact riveting under a microscope provided in an embodiment of this application;

[0027] Figure 2 This is a flowchart of the matching method provided in the embodiments of this application;

[0028] Figure 3A This is a schematic diagram showing the dimensions of the contact head end provided in an embodiment of this application;

[0029] Figure 3B This is a schematic diagram of the dimensions of the molding chamber provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram illustrating the matching principle between the contact and the stamping die provided in the embodiments of this application;

[0031] Figure 5 This is a structural block diagram of the matching device provided in the embodiments of this application;

[0032] Figure 6 This is an interface diagram of the matching device provided in an embodiment of this application;

[0033] Figure 7 This is a block diagram of the electronic device structure provided in the embodiments of this application;

[0034] Figure 8 This is a block diagram of the storage medium structure provided in the embodiments of this application.

[0035] Label Explanation:

[0036] 1. Stamping and riveting die; 2. Forming chamber; 3. Contact point; 4. Spring; Detailed Implementation

[0037] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] It is readily understood that, based on the technical solution of this application, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this application. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this application and should not be considered as the entirety of this application or as limitations or restrictions on the technical solution of this application.

[0039] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0040] Example 1

[0041] The high-speed stamping riveting die 1 of the present invention has an SPM of 400 or higher. It is configured to provide a forming chamber 2 for the head end of the die-end part. Before riveting, the head end of the die-end part is placed in the forming chamber 2, and the part to be riveted is placed on the top surface of the stamping riveting die 1. The upset portion of the die-end part passes through a pre-drilled hole. During riveting, a pressure device acts on the die-end part, causing the head end of the die-end part to fully deform and fill the forming chamber 2. Under pressure, the outer contour of the upset portion of the die-end part deforms and expands, and together with the head end of the die-end part, it is fastened to the part to be riveted, thus achieving the fastening of the die-end part to the part to be riveted. The die-end part of the present invention includes a rotating forged part such as a contact 3. In this embodiment, the contact 3 is used as an example for detailed description. Correspondingly, the riveted part is a spring 4. The contact 3 is fixed to the spring 4 by riveting deformation. The structure combining the spring 4 and the contact 3 is widely used in relays and other switching electrical appliances.

[0042] like Figure 2As shown, the design matching method specifically includes the following steps:

[0043] S1: Quantify the dimensions of the head end of the mold end component; the quantified dimensions of the head end of the mold end component refer to obtaining the set of dimensions defined in the drawing of the head end of the mold end component; such as... Figure 3A As shown in Figure 3A, in this embodiment, the mold end part is a contact point 3, which includes a head end and a rod end. The mating surface between the head end and the rod end is an interface. The dimensions of the head end of the contact point 3 include a head height T, a first spherical radius SR1, a first transition fillet R1, a head diameter D1, and a first demolding angle α1. Referring to Figure 3A, the head height T refers to the distance between the interface and the farthest position of the head end of the contact point 3 away from the interface. The first spherical radius SR1 refers to the first spherical arc surface provided at the end of the contact point 3 away from the interface, and the radius of the first spherical arc surface is the first spherical radius SR1. The first transition fillet R1 refers to the fillet radius of the top edge of the head end of the contact point 3. The head diameter D1 refers to the maximum diameter of the head end of the contact point 3. The first demolding angle α1 refers to the inclination angle of the side wall of the head end of the contact point 3 in the demolding direction.

[0044] S2: Based on the dimensions of the head end of the mold part, calculate the theoretical volume V1 of the head end of the mold part. Using the dimensions of the contact point 3 head end set in S1, the outer contour of the contact point 3 head end is basically defined, such as... Figure 3A As shown, a first coordinate system O1X1Y1 is established with the axis at the interface of the rod end in S1 as the origin, extending radially towards the rod end and axially towards the head end. The theoretical volume V1 of the head end of contact 3 can then be calculated using an integral algorithm. Specifically, the theoretical volume of contact 3 is calculated using integration; see the following formula for details, with elements referenced above:

[0045]

[0046] S3: The theoretical volume V1 calculated from S2 does not take into account the errors in actual production and measurement. During production, the shape of the mold end parts is often not full. Therefore, based on the manufacturing tolerances and precision of the mold end parts' head, a correction coefficient K is introduced to obtain the corrected volume V2 = K * V1 of the mold end parts' head. The corrected volume refers to the actual volume of the mold end parts' head. The correction coefficient K is the ratio of the actual volume of the mold end parts to the measured volume. Since the head of contact 3 is irregularly shaped, a method such as the drainage method is used to calculate the actual volume of the mold end parts to obtain the correction coefficient K. The value of the correction coefficient K is closely related to the head diameter D1 of contact 3. Experiments show that, taking contact 3 with a head diameter in the range of 2-4 mm as an example, k = 0.94 is applicable.

[0047] S4: The priority order of the forming chamber 2 size of the pre-set stamping riveting die 1 is determined by designing the forming chamber 2 size of the stamping riveting die 1 step by step from high priority to low priority, and obtaining the matching volume V3 of the forming chamber 2 under the corresponding size; wherein, the forming chamber size refers to the set of all dimensions of the inner wall of the forming chamber, as detailed below, the priority order of the pre-set forming chamber 2 size of the stamping riveting die 1 includes: through experiments with a number of samples that meet the confidence level requirements, the significance of the forming chamber 2 size on the gap between the die end part and the riveted part after riveting is analyzed by binary logistic regression, so as to determine the priority order of the forming chamber 2 size when designing the stamping riveting die, wherein, the confidence level is also called the reliability, or confidence level, confidence coefficient, that is, when sampling to estimate the population parameters, the conclusion is always uncertain due to the randomness of the sample. Therefore, a probabilistic statement method is adopted, namely the interval estimation method in mathematical statistics. That is, the probability that the estimated value and the population parameter are within a certain allowable error range is called the confidence level. In this embodiment, the sample size is 1000. In the binary logistic regression method, binary means that the dependent variable often has only two possible results. Such results can be represented by dummy variables. The values ​​of dummy variables can be 0 and 1. However, since the dependent variable only takes two discrete variables, 0 and 1, it is not suitable to be directly used as the dependent variable in the regression model. However, this application notes that the expected value of the dependent variable E(Y) = P(Y = 1) = p. Therefore, the probability of Y = 1 is used as the dependent variable. Further, a Logit transformation is performed on p, that is, Logit(p) = ln(p / 1-p), so that there is a linear correlation between Logit(p) and the independent variable. The model obtained after the transformation also solves the defect that the probability prediction value is outside [0,1]. This regression model with Logit(p) as the target variable is called the logistic regression model. The logistic regression model is a linear regression model that establishes ln(p / 1-p) and natural variables. The formula for the logistic regression model is: ln(p / 1-p)=β0+β1x1+…+βpxp+ε. Since the range of ln(p / 1-p) is (-oo, +oo), the independent variables x1, x2, ..., xp can take values ​​within any range. In this embodiment, the gap result after riveting contact 3 is taken as Y, the defective group showing gap is taken as "Y=1", and the group without defects is taken as "Y=0". The relevant contact 3 dimensions are taken as X1, X2, ..., X1. Through nearly 1000 sets of experimental data, the statistical relationship between X and Y is calculated. When P≤0.05, we consider Y and X to be significantly correlated, and vice versa. The dimensions of 969 sets of contact 3 were randomly sampled, and the gap after riveting was confirmed. The data of contact 3 are organized into a table as follows:

[0048]

[0049]

[0050] Table 1

[0051] Regarding Table 1, it should be noted that, firstly, the P-value of the head diameter D1 of contact point 3 is ≤0.05. This value is significantly correlated with the post-riveting clearance. It can be understood that, in the design of the riveting die, the corresponding cavity opening size is the most important size and should therefore be given the highest priority. Secondly, the first spherical radius SR1 ensures contact and support, preventing contact point 3 from becoming unstable during the riveting process, and is therefore given as a secondary priority size. As for the first transition fillet R1, head height T, and first demolding angle α1, these have been clearly defined in the original design standards, and the influencing factors of the project have been identified through experiments. Therefore, the first transition fillet R1, head height T, and first demolding angle α1 have lower priorities.By determining the priority of the head end size of contact 3, and since contact 3 is adapted to the forming chamber 2, the priority of the forming chamber 2 size of the stamping die 1 is consistent with the priority of the head end size of contact 3. That is, the size of the forming chamber 2 of the stamping die 1, from high priority to low priority, includes the cavity diameter D2, the second spherical radius SR2, the second transition fillet R2, the cavity depth H, and the second demolding angle α2. The cavity diameter D2 refers to the largest diameter of the cavity along its depth direction, and the second spherical radius SR2 refers to the second spherical arc surface provided on the bottom surface of the cavity. The radius is the second spherical radius SR2, the second transition fillet R2 refers to the fillet radius of the bottom edge of the mold cavity, the mold cavity depth H refers to the distance between the upper surface of the stamping die 1 and the deepest part of the mold cavity, and the second demolding angle α2 refers to the inclination angle of the inner wall of the forming chamber 2 in the demolding direction. The high-priority dimensions of the forming chamber 2 include, in order, the mold cavity diameter D2 and the second spherical radius SR2, while the low-priority dimensions of the forming chamber 2 include, in order, the mold cavity depth H and the second demolding angle α2. Furthermore, when the diameter D1 of the contact head is in the range of 1mm-10mm... The mold cavity diameter D2 = head diameter D1max + (0.06-0.12), meaning the opening for the contact point 3 to fall into the forming chamber 2 will be larger. This allows the contact point 3 to fall into the forming chamber 2 quickly when the stamping die 1 SPM is above 400, and then the opening gradually converges towards the bottom. This theoretically minimizes the riveting gap between the die end part and the riveted part. Experiments show that when the contact head diameter D1max is between 1mm and 10mm, plus a range of 0.06-0.12, the stamping effect of the forming chamber 2 is better, meaning the probability of riveting gaps is low and... To meet the demands of rapid production, analysis revealed a negative correlation between the cavity diameter D2 and the post-riveting clearance. Therefore, the cavity diameter D2 and the head diameter D1 of contact 3 should be chosen to be as small as possible within the standard range, i.e., the optimal solution is cavity diameter D2 = head diameter D1max + 0.06. The second spherical radius SR2 is set to be the same as the first spherical radius SR1, so that when the stamping riveting die 1SPM is above 400, the contact area between the first spherical radius SR1 of contact 3 and the second spherical radius SR2 of forming chamber 2 reaches its maximum to form a stable contact.

[0052] The inner contour of the molding chamber 2 is basically defined by the various dimensions of the molding chamber 2, such as Figure 3B As shown, taking the intersection of the forming cavity and the central axis with the upper surface of the stamping die 1 as the origin, a second coordinate system O2X2Y2 is established in the radial direction of the forming cavity 2 and the axial direction towards the bottom of the forming cavity 2. Therefore, the matching volume V3 of the forming cavity 2 can be calculated by the integral algorithm. Specifically, the matching volume of the stamping die 1 is calculated by integration, as detailed in the following formula, with the elements in the formula referring to the above:

[0053]

[0054] S5: Determine the relationship between the matching volume V3 of the molding chamber 2 and the corrected volume V2 of the head end of the mold end part; such as Figure 4 As shown, based on the principle of constant volume during the riveting process of contact 3, the corrected volume V2 at the head end of the matching contact 3 is matched with the matching volume V3 of the molding chamber 2. If the matching volume V3 of the molding chamber 2 is within the allowable deviation range based on the corrected volume V2 at the head end of the mold part, that is, the corrected volume V2 is basically equal to the matching volume V3, then proceed to S7; if the matching volume V3 of the molding chamber 2 exceeds the allowable deviation range based on the corrected volume V2 at the head end of the mold part, that is, the corrected volume V2 does not match the matching volume V3, then proceed to S6; the allowable deviation is the design deviation, based on the mold design specifications, with the corrected volume V2 as the benchmark, such as an allowable deviation of ±0.03mm. 3 .

[0055] S6: Based on the nominal size of the molding cavity designed by the mold, the nominal size is the nominal size. The lower priority size of the molding cavity 2 is adjusted from low priority to high priority to obtain the transformed matching volume V3, and then returned to S5. That is, a closed loop of adjustment is formed through S5 and S6. The matching volume V3 adjusted by S6 is returned to S5 and compared with the corrected volume V2 at the head end of the contact 3. If the matching volume V3 and the corrected volume V2 in S5 do not match, the adjustment is performed again in S6 until the matching volume V3 and the corrected volume V2 match. Specifically, when adjustments are needed, the lower priority dimensions of the molding cavity 2 are adjusted based on the premise of conforming to the mold design specifications. For example, the second demolding angle α2 is first adjusted to the allowable limit value. If there is a large deviation between the matching volume V3 and the corrected volume V2 after adjustment, the cavity depth H is then adjusted to the limit value. If the matching volume V3 and the corrected volume V2 still exceed the allowable deviation after adjustment, the second transition fillet R2 is then adjusted. By adjusting the lower priority dimensions of the molding cavity 2, the requirements of important dimensions are ensured, and the production quality of the product is effectively guaranteed.

[0056] S7: Complete the matching of stamping and riveting die 1.

[0057] Please refer to Table 2 below. Compared with existing methods, as shown in the fifth issue of the 2018 journal *Electrical Materials*, titled "A Study on the Matching Relationship between the Size of the Riveting Mold Cavity and the Contact Head," firstly, the size of the forming chamber 2 is obtained by empirically adjusting the dimensions of various contact head sizes. This approach does not clearly define the priority or design sequence of the forming chamber 2 dimensions, nor is it supported by data, making it too empirical and unable to provide effective design guidance. Secondly, the method used in the journal to obtain the contact head dimensions involves measuring a small batch of randomly selected contacts 3 from each batch. Since the dimensions of contacts 3 vary between different batches, the data obtained using this method has poor generalizability. This application uses the above method to quantify the priority of the dimensions of the head end of the die part and the dimensions of the forming chamber 2 of the stamping riveting die 1. This achieves a precise match between the matching volume V3 of the forming chamber 2 of the stamping riveting die 1 and the corrected volume V2 of the head end of the die part, ensuring that the dimensions of the forming chamber 2 with high priority are selected. This effectively guides the design of the forming chamber 2. The biggest difference lies in the design of the die cavity diameter D2 and the second spherical radius SR2. This reduces the design difficulty while ensuring production quality and improving production efficiency.

[0058]

[0059]

[0060] Table 2

[0061] The following examples of design matching and production matching of stamping riveting die 1 further illustrate the above.

[0062] First, here is a design matching example for stamping and riveting die 1:

[0063] S1′: Receive the drawing of contact 3 and extract the dimensions of the head end of contact 3. Taking the middle dimension as an example, the head height of contact 3 is T=0.8mm, the head diameter is D1=3.76mm, the first spherical radius is SR1=15mm, the first transition fillet is R1=0.2mm, and the first demolding angle is α1=8°.

[0064] S2′: According to the calculation formula, calculate the theoretical volume V1 of the contact 3 head end, and obtain the theoretical volume V1 of the contact 3 head end = 7.79mm. 3

[0065] S3′: Introduce a correction factor k to calculate the corrected volume. For contact 3 with a head diameter in the range of 2-4, take k = 0.94. The calculated V2 = 7.32 mm. 3 .

[0066] S4′: The priority order of the forming chamber 2 of the pre-set stamping and riveting die 1 is used to design the dimensions of the forming chamber 2 of the stamping and riveting die 1 step by step from high priority to low priority. The die cavity diameter D2 = 3.84mm, the second spherical radius SR2 = 15mm, the second transition fillet R2 = 0.35mm, the die cavity depth H = 0.72mm, and the second demolding angle α2 = 9° are given priority. The die cavity diameter D2 and the second spherical radius SR2 are prioritized, and the matching volume V3 = 7.13mm is calculated. 3 .

[0067] S5A′: Determine the relationship between the matching volume V3 of the molding chamber 2 and the corrected volume V2 of the head end of the mold end part; take the design deviation as ±0.03mm. 3 Since the difference between the corrected volume V2 = 7.32 and the matching volume V3 = 7.13 is 0.19, which is greater than the design deviation, the size of the molding chamber 2 is changed.

[0068] S6′: Based on the nominal dimensions of the molding cavity in the mold design, adjust the dimensions of molding cavity 2 (lower priority) from low priority to high priority. Since the second demolding angle α2 = 9° has already reached the maximum allowable value in the mold design specifications, adjust the manufacturing dimensions of molding cavity 2, changing the cavity depth H from 0.72mm to 0.74mm, resulting in a new matching volume V3 = 7.34mm for molding cavity 2. 3 .

[0069] S5B′: The new matching volume V3 = 7.34 mm is obtained from S6. 3 Then, the corrected volume V2 at the head end of contact 3 is 7.32mm. 3 Upon comparison, the difference between the new matching volume V3 and the corrected volume V2 is less than the design deviation, thus meeting the requirements.

[0070] S7′: Complete the design matching of stamping and riveting die 1.

[0071] Based on the same inventive concept, this application provides a matching device embodiment corresponding to Embodiment 1, as detailed in Embodiment 2.

[0072] Example 2

[0073] A matching device for a stamping riveting die 1, which applies the design matching method for the stamping riveting die 1 in Embodiment 1, such as... Figures 5-6 As shown, the matching device is built on the QT software, a C++ graphical user interface application development framework, and specifically includes: a mold end part data module and a molding chamber calculation module.

[0074] The mold end part data module is configured to input the head end size and correction coefficient K of the mold end part, and generate the theoretical volume V1 and the corrected volume V2 of the head end of the mold end part.

[0075] The molding chamber calculation module is configured to support inputting the dimensions of the molding chamber 2 in order to generate a matching volume V3 for the molding chamber 2.

[0076] Specifically, as shown in the figure, when designing and matching the stamping die 1, firstly, the dimensions of the contact point 3 head end from the drawing, including the head height T, the first spherical radius SR1, the first transition fillet R1, the head diameter D1, the first demolding angle α1, and the correction coefficient K, are entered into the input interface of the die end part data module. Then, by pressing the "Click to Calculate" button at the bottom of the die end part data module interface, the theoretical volume V1 and the corrected volume V2 can be automatically obtained through the built-in formula program. Secondly, based on the dimensional parameters input from the die end part data module, the dimensions of the forming chamber 2 of the stamping die 1 are designed step by step from high priority to low priority in the forming chamber calculation module interface. The dimensions include the cavity diameter D2, the second spherical radius SR2, the second transition fillet R2, the cavity depth H, and the second demolding angle α2. Among these, high-priority molded cavity 2 dimensions, such as the cavity diameter D2 and the second spherical radius SR2, must be prioritized to meet the requirements. Low-priority molded cavity 2 dimensions, such as the cavity depth H and the second demolding angle α2, are prioritized. The "gradual" approach refers to prioritizing the high-priority molded cavity 2 dimensions, provided that the correction volume V2 and the matching volume 3 are within the allowable deviation range. This minimizes the probability of riveting gaps between the mold end parts and the riveted parts. Other low-priority molded cavity 2 dimensions are left for adjustment, rather than referring to the input order. In other words, high-priority molded cavity 2 dimensions must be input first. After the dimensions of the molding chamber 2 are entered, press the "Click to Calculate" button in the molding chamber calculation module interface to obtain the matching volume V3. Compare the difference between the corrected volume V2 and the matching volume V3 with the design deviation. Based on the fact that the corrected volume V2 and the matching volume V3 are within the allowable deviation range, adjust the low-priority dimensions of the molding chamber 2 until the difference between the corrected volume V2 and the matching volume V3 meets the design deviation.

[0077] In this embodiment, the molding chamber calculation module further includes an input auxiliary unit, which is configured to indicate the priority of the molding chamber size, such as... Figure 6As shown, a priority prompt bar is set to the right of the input field of the molding chamber calculation module. When the "Click to Calculate" button in the interface of the molding chamber calculation module has been clicked, when modifying the molding chamber size, only the value can be re-entered from the low-priority molding chamber input box. Only when the value in the low-priority molding chamber input box reaches the limit value, such as the maximum or minimum value, can the input of the molding chamber size value of the next higher priority be unlocked.

[0078] Using the above-mentioned device, the corrected volume V2 of the head end of the die part and the matching volume V3 of the forming chamber 2 can be automatically calculated based on the input dimensions of the head end of the die part and the dimensions of the forming chamber 2, respectively. Then, based on the deviation between the corrected volume V2 and the matching volume V3, the matching volume V3 of the forming chamber 2 is adjusted from the lower priority dimensions of the forming chamber 2. This quantifies and simplifies the adaptation between the stamping die 1 and the die part, clarifies the dimensions of the forming chamber 2 that need to be adjusted, saves engineers' design time, and saves material waste caused by the mismatch between the stamping die 1 and the die part.

[0079] Based on the same inventive concept, this application provides an electronic device embodiment corresponding to Embodiment 1, as detailed in Embodiment 3.

[0080] Example 3

[0081] This embodiment provides an electronic device, such as... Figure 7 As shown, it includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it can implement the implementation method in Embodiment 1.

[0082] Since the electronic device described in this embodiment is the device used to implement the method in Embodiment 1 of this application, those skilled in the art can understand the specific implementation method and various variations of the electronic device in this embodiment based on the method described in Embodiment 1 of this application. Therefore, how the electronic device implements the method in the embodiment of this application will not be described in detail here. Any device used by those skilled in the art to implement the method in the embodiment of this application falls within the scope of protection of this application.

[0083] Based on the same inventive concept, this application provides a storage medium corresponding to Embodiment 1, as detailed in Embodiment 4.

[0084] Example 4

[0085] This embodiment provides a computer-readable storage medium, such as... Figure 8 As shown, a computer program is stored thereon, which, when executed by a processor, can implement the implementation method in Embodiment 1.

[0086] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, USB flash drive, optical storage, etc.) containing computer-usable program code.

[0087] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0088] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0089] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0090] It should be understood that all the above preferred embodiments are exemplary and not restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this application should be within the scope of legal protection of this application.

Claims

1. A design and matching method for high-speed stamping riveting dies, characterized in that: Includes the following steps: S1: Dimensions of the head end of the mold part on the quantitative drawing; S2: Calculate the theoretical volume V1 of the head end of the mold part based on the dimensions of the head end of the mold part; S3: Based on the design tolerance or manufacturing precision of the head end of the mold part, introduce the correction coefficient K to obtain the correction volume V2 = K * V1 of the head end of the mold part; S4: Preset the priority order of the forming chamber size of the stamping riveting die, and design the forming chamber size of the stamping riveting die step by step from high priority to low priority to obtain the matching volume V3 of the forming chamber under the corresponding size; S5: Determine the relationship between the matching volume V3 of the molding chamber and the corrected volume V2 of the head end of the mold end part; If the matching volume V3 of the molding chamber is within the allowable deviation range based on the corrected volume V2 of the head end of the mold end part, then proceed to S7; If the matching volume V3 of the molding chamber exceeds the allowable deviation range based on the corrected volume V2 of the head end of the mold end part, then proceed to S6; S6: Based on the nominal size of the molding cavity designed by the mold, adjust the size of the molding cavity with lower priority from low priority to high priority, obtain the transformed matching volume V3, and return to S5; S7: Complete the design and matching of the stamping and riveting die.

2. The design and matching method for a high-speed stamping riveting die as described in claim 1, characterized in that, The priority order of the forming chamber size of the preset stamping riveting die includes: analyzing the significance of the forming chamber size on the gap between the die end part and the riveted part after riveting by using binary logistic regression through a number of samples that meet the confidence requirements, so as to determine the priority order of the forming chamber size when designing the stamping riveting die.

3. The design and matching method for a high-speed stamping riveting die as described in any one of claims 1-2, characterized in that, The mold end part is a contact point, and the head end dimensions of the contact point include head height T, first spherical radius SR1, first transition fillet R1, head diameter D1, and first demolding angle α1; the forming cavity dimensions of the stamping riveting die, from high priority to low priority, include mold cavity diameter D2, second spherical radius SR2, second transition fillet R2, mold cavity depth H, and second demolding angle α2.

4. The design and matching method for a high-speed stamping riveting die as described in claim 3, characterized in that, When the contact head diameter D1 is in the range of 1mm-10mm, The cavity diameter D2 = head diameter D1max + (0.06-0.12) ensures that when the stamping riveting die SPM is above 400, the contact point can quickly fall into the forming cavity and ensure the riveting quality between the die end part and the riveted part. The second spherical radius SR2 is set to be the same as the first spherical radius SR1, so that when the stamping die SPM is above 400, the contact area between the first spherical radius SR1 of the contact point and the second spherical radius SR2 of the forming chamber reaches the maximum to form a stable contact.

5. The design and matching method for a high-speed stamping riveting die as described in claim 3, characterized in that, The theoretical volume of the contact is calculated using integration:

6. The design and matching method for a high-speed stamping riveting die as described in claim 3, characterized in that, The matching volume of the stamping die is calculated using integration:

7. A high-speed stamping riveting die matching device, characterized in that, The stamping and riveting die matching method as described in any one of claims 1-6 includes: The mold end part data module is configured to input the head end size and correction coefficient K of the mold end part, and generate the theoretical volume V1 and the corrected volume V2 of the head end of the mold end part. The molding chamber calculation module is configured to support inputting the molding chamber dimensions in order to generate a matching volume V3 for the molding chamber.

8. The high-speed stamping riveting die matching device as described in claim 7, characterized in that, The molding chamber calculation module also includes an input auxiliary unit, which is configured to indicate the priority of the molding chamber size.

9. An electronic device, characterized in that, The invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the program, implements the method as described in any one of claims 1 to 6.

10. A storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the stamping and riveting die matching method as described in any one of claims 1-6.

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