CN116223060A - Part stamping passing detection method - Google Patents

Abstract

The embodiment of the present application discloses a method for detecting stamping passability of a part, which relates to the technical field of vehicle manufacturing, and can solve the problem that the stamping passability of a part is difficult to detect in the early stage of part modeling design. The stamping passability detection method of the part includes extracting the parameter value of the relative height difference of the molding surface of the part along the stamping direction; obtaining the maximum stroke parameter of the slider of the subsequent process press; obtaining the feeding material of the molding surface under the maximum value of the relative height difference Side stamping passability parameters and discharge side stamping passability parameters; based on the feed side stamping passability parameters, discharge side stamping passability parameters and the maximum stroke parameter of the slider, the detection results of the stamping passability of the parts are determined, and the detection results are used for To characterize whether the part meets the stamping passability of the part. The part stamping passability detection method of the present application is used to detect the stamping passability of the part.

Description

A method for testing the passability of parts stamping

technical field

The embodiments of the present application relate to the technical field of vehicle manufacturing, and in particular, to a method for detecting passability of stamping parts.

Background technique

In the modeling design stage of automobile research and development, the preliminary modeling surface (Concept A Surface, CAS) needs to be split according to different functions. After splitting the parts, it is also necessary to consider whether the manufacturability meets the requirements. One of the very important points is The sheet metal of the seam needs to meet the part passability of the stamping production line. In the modeling design stage, according to the division of labor in the early stage, it has been clarified which production line will be produced, but this stage is too close to the early stage, there is no mold structure diagram, and it is impossible to judge whether the part meets the passability of the production line according to the traditional method of judging the passability of the part; And because some production lines are relatively old, there is no interference curve, and it is impossible to judge the passability of parts through the interference curve and mold diagram.

In related technologies, in the stage of automobile styling design, it is often only possible to refer to the parts of previous projects, and put forward restrictions on the division of parts. However, referring to the size of previous projects, it can no longer effectively meet the needs of existing automobile styling design for division, and it is easy for parts to fail to meet Passability of the stamping production line.

Contents of the invention

The embodiment of the present application provides a method for detecting stamping passability of a part, which can solve the problem that the stamping passability of the part is difficult to detect in the early stage of modeling design.

The embodiment of the present application provides a part stamping passability detection method, which is applied to the stamping passability detection in the early stage of part modeling design. The part stamping passability detection method includes: obtaining the largest relative height difference of the part's modeling surface along the stamping direction value, to obtain the maximum stroke parameter of the slider of the post-process press, to obtain the stamping passability parameters of the feed side and the discharge side of the molding surface, and the stamping passability parameters of the feed side include at least the relative height of the feed side of the part. Difference parameter, the stamping passability parameter of the discharge side at least includes the relative height difference parameter of the discharge side of the part; among them, the passability parameter of the feed side and the stamping passability parameter of the discharge side are the part’s modeling surface where the relative height difference is the largest Passability parameters when passing through the press in the case of value;

Based on the stamping passability parameters of the feed side, the stamping passability parameters of the discharge side and the maximum stroke parameters of the slider, the detection results of the stamping passability of the part are determined, and the detection results are used to indicate whether the part meets the stamping passability of the part.

Specifically, the type of the part is not limited, for example, it may be a body side wall, a fender, an engine cover, a back door and the like. For example, taking the side wall parts as an example, in the early stage of automobile modeling design, the side wall modeling surface is designed, and the relative height difference parameter values of the side wall parts are extracted, for example, the parameter values of the relative height difference in different directions along the side wall, and Usually, through the process analysis of side wall parts, when the side wall stamping direction is along the height direction of the vehicle body, the passability of the side wall parts is the worst. Therefore, when the side wall parts can pass through the press production line along the body height direction, the Parts can also meet the passability of the press production line in other directions, that is, in extracting the relative height difference parameter values of multiple different directions of the side wall parts, it should at least include The relative height difference maximum value in the height difference. Obtain the maximum stroke parameter of the slider of the post-process press. Here, the maximum stroke parameter of the slider of the press refers to the distance that the slider moves from the bottom dead center to the top dead center during the stamping production process of the press. Here, the selected When setting a certain press production line, that is, the maximum stroke parameter of the slider of the press is usually unchanged. Therefore, it is necessary to obtain various stamping passability parameters of the part in the early stage of part modeling design, so as to be used for matching with the press. The maximum stroke parameters of the slider are compared to judge whether the parts in the early stage of modeling design can meet the passability of the press stamping production line.

Therefore, it is necessary to further obtain the stamping passability parameters of the feed side and the discharge side under the condition of the maximum relative height difference of the molding surface of the part along the stamping direction, such as, taking the side wall part as an example, in the side wall part Along the height direction of the vehicle body, that is, when the relative height difference of the side wall parts passes through the press production line, it is necessary to obtain the stamping passability parameters of the feed side, where the stamping passability parameters of the feed side include at least the feed The relative height difference parameter of the material side; correspondingly, the stamping passability parameter of the material side at least includes the relative height difference parameter of the material material side. Among them, the passability parameters of the feed side and the stamping passability parameters of the discharge side are passability parameters when the molding surface of the part needs to pass through the press under the condition of the maximum relative height difference.

Here, at least including the relative height difference parameters of the feed side of the parts specifically means that when the parts pass through the press on the feed side, usually in order to improve the automation of the stamping production line, it is necessary to automatically grab the parts through grabbing components such as robotic arms. In this case Next, because the grabbing components such as the robot arm need to occupy the stamping space of the press, it is also necessary to consider the relative height difference parameters of the grabbing components such as the robot arm. In addition, considering the interference risk area when the parts are fed, it is usually necessary to design the parts stamping Passed safety margin parameters, so that even if the stamping production line uses grabbing components such as robotic arms to grab parts and does not design safety margin parameters, to make the parts pass the stamping production line on the feed side, at least include The relative height difference parameter of the feed side of the part and make it not greater than the maximum stroke parameter of the slider can achieve the minimum required conditions for the part to pass through the stamping production line on the feed side. Similarly, the discharge side also needs to include at least the relative height difference parameters of the part's discharge side.

Among them, based on the above parameters of the stamping passability of the feed side, the stamping passability parameters of the discharge side and the maximum stroke parameters of the slider, the detection results of the stamping passability of the parts are determined. Specifically, the stamping passability parameters of the feed side include The relative height difference parameters of the feed side of the parts and other possible feed-side stamping passability parameters are compared with the maximum stroke parameters of the slider of the press. For example, the sum of the feed-side stamping passability parameters is not greater than the maximum slider. Stroke parameters, and the sum of each parameter of stamping passability on the discharge side is not greater than the maximum stroke parameter of the slider, it can be determined that the part can pass through the stamping production line, and if the sum of at least one parameter of the feed side or the discharge side is greater than the maximum of the slider If the stroke parameters are used, it can be determined that the parts cannot pass through the stamping production line. Therefore, the test results can be used to characterize whether the parts meet the stamping passability of the parts. Through the above detection method, it can be realized that even if the stamping production line is old and there is no interference curve, and there is no mold drawing in the early modeling stage, it can still detect whether the part meets the stamping passability of the press, making this detection method applicable to more scenarios .

In a possible implementation of the present application, the punching passability parameters on the feed side and the punching passability parameters on the discharge side both include the stroke parameters of the presser, the relative height difference parameters of the grabbing components along the stamping direction of the parts, and the safety parameters. Margin parameter. Among them, in order to improve the automation of the stamping production line, it is usually necessary to automatically grab the parts through the grabbing component. difference parameter. In addition, considering that there is an interference risk area when the parts are fed, it is usually necessary to design the safety margin parameters for the stamping of the parts. In this way, it is possible to ensure that the parts designed in the early stage of the modeling design can pass through the stamping production line without reducing the stamping efficiency.

In a possible implementation of the present application, both the punching passability parameters on the feed side and the punching passability parameters on the discharge side also include reserved safety values, which are reserved for adjusting the structural surface in the later stage of the press. Safe amount. For example, reserve a safe amount for the arrangement of wedges, stopper rods and increase the structural surface of parts in the later stage of the press, so as to meet the stamping passability of parts in various processes.

In a possible implementation of the present application, the step of determining the detection result of the stamping passability of the part based on the stamping passability parameter at the feed side, the stamping passability parameter at the discharge side, and the maximum stroke parameter of the slider includes: The stroke parameters of the feeder, the safety margin parameters, the relative height difference parameters of the grasping components, the relative height difference parameters of the feed side, the height parameters of the feed side of the punch and the reserved safety values are summed to obtain the stamping passability of the feed side Sum of parameters; sum the stroke parameters of the feeder, the safety margin parameters, the relative height difference parameters of the grasping components, the relative height difference parameters of the discharge side, the height parameters of the feed side of the punch and the reserved safety value, and obtain the discharge The sum of the passability parameters of the side stamping; determine whether the sum of the passability parameters of the stamping side of the feed side and the sum of the passability parameters of the stamping side of the discharge side is less than the maximum stroke parameter of the slider; and are both less than the maximum stroke parameters of the slider, it is determined that the part meets the stamping passability; if at least one of the stamping passability parameters of the feed side and the stamping passability parameters of the discharge side is greater than or equal to the maximum stroke parameter of the slider, then it is determined The part does not meet punch passability.

In a possible implementation of the present application, after the step of determining the detection result of the stamping passability of the part based on the stamping passability parameter of the feed side, the stamping passability parameter of the discharge side and the maximum stroke parameter of the slider, it also includes: If the part does not meet the stamping passability, the modeling surface of the part is reconstructed, and the parameter value of the relative height difference of the part is re-extracted. Among them, the part does not meet the stamping passability, including that the part does not meet the stamping passability of the part on the feed side and/or the discharge side. When this happens, the modeling surface of the part can be rebuilt to adapt to the passability of the stamping production line , at this time, the adjusted parts do not necessarily meet the stamping passability. It is necessary to re-extract the parameter value of the relative height difference of the part and repeat the steps of the above part stamping passability detection method until the designed part meets the stamping passability of the part.

In a possible implementation manner of the present application, both the relative height difference parameter on the feed side and the relative height difference parameter on the discharge side are less than or equal to the maximum value of the relative height difference. Among them, the relative height difference parameters of the feed side and the relative height difference parameters of the discharge side are the relative height difference parameters corresponding to the parts with the worst passability on the feed side and the discharge side, that is, the shape of the part along the stamping direction The situation under the maximum relative elevation difference. Here, the reason why the relative height difference parameters corresponding to the worst passability of the parts on the feed side and the discharge side are respectively used as the relative height difference parameters of the feed side and the relative height difference parameters of the discharge side is because the passability of the part In the worst case, if the part meets the stamping passability, then when the part changes its position angle relative to the press along the stamping direction, it will usually meet the stamping passability.

In a possible implementation of the present application, the safety margin parameters include a first safety margin parameter and a second safety margin parameter, wherein, the interference risk area between the grasping assembly and the upper die seat of the press There is a first safety margin, so that the grasping assembly avoids the upper mold base; the interference risk area between the end of the lower mold base of the part close to the press along the stamping direction and the lower mold base has a second safety margin, so that Keep the part out of the way of the lower die seat. Here, the design of the first safety margin and the second safety margin can further ensure that the shape of the part designed in the initial stage of modeling can meet the stamping passability of the part. In addition, the first safety margin parameter and the second safety margin parameter may be equal or unequal, and the details are not limited.

In a possible implementation of the present application, along the stamping direction of the part, the height difference between the upper end surface of the grabbing component and the risk point of material interference on the upper die base, and the height difference between the upper end surface of the grabbing component and the outlet on the upper die base The height difference between the material interference risk points is the first safety margin parameter. Among them, since the grasping component is in the process of grasping and placing parts in the stamping space, its grasping and placing action inevitably deviates from the theoretical design results. The above design can provide a margin for the movement deviation of the grasping component, so that the grasping component can avoid Knocking the press in the easy-to-interference risk area will affect the stamping passability of the parts.

In a possible implementation of the present application, the step of determining the detection result of the stamping passability of the part based on the stamping passability parameter of the feed side, the stamping passability parameter of the discharge side and the maximum stroke parameter of the slider further includes: Create the stamping passability sketch on the feed side of the part, and along the stamping direction of the part, between the upper slider of the press machine and the press bed on the stamping passability sketch of the part feed side, obtain and mark the presses in sequence from top to bottom Feeder stroke parameters, first safety margin parameters, relative height difference parameters of grabbing components, relative height difference parameters of the feed side, height parameters of the feed side of the punch, second safety margin parameters, and all the above parameters obtained Summing up with the reserved safety value, the sum of the stamping passability parameters on the feed side is obtained; if the sum of the stamping passability parameters on the feed side is less than the maximum stroke parameter of the slider, it is determined that the part meets the stamping passability on the feed side; if the feed side If the stamping passability parameter sum is greater than or equal to the maximum stroke parameter of the slider, it is determined that the part does not meet the stamping passability. In this way, it is possible to more intuitively analyze whether the part satisfies the passability through the created passability sketch of the feed side stamping, and it is convenient to analyze the risk point of easy interference according to the shape of the part, and configure the stamping passability parameters and output of the feed side Passability parameters of side stamping.

In a possible implementation of the present application, if the stamping passability parameter on the feed side is less than the maximum stroke parameter of the slider, then in the step of determining that the part satisfies the stamping passability on the feed side, it also includes: creating a part output Stamping passability sketch on the material side, and along the stamping direction of the part, between the press slide block and the press machine table on the part discharge side stamping passability sketch, obtain and mark the stroke parameters of the presser in sequence from top to bottom , the first safety margin parameter, the relative height difference parameter of the grasping component, the relative height difference parameter of the discharge side, the height parameter of the feed side of the punch, and the second safety margin parameter, and all the above parameters obtained and the reserved safety The values are summed to obtain the sum of the stamping passability parameters on the discharge side; if the sum of the stamping passability parameters on the discharge side is less than the maximum stroke parameter of the slider, it is determined that the part meets the stamping passability; if the stamping passability parameters of the discharge side and If it is greater than or equal to the maximum stroke parameter of the slider, it is determined that the part does not meet the stamping passability.

Description of drawings

Fig. 1 is the front view of a kind of vehicle provided by the embodiment of the present application;

Fig. 2 is a top view of a vehicle provided by an embodiment of the present application;

Fig. 3 is an A-A sectional view of a vehicle in Fig. 1 and Fig. 2 provided by the embodiment of the present application;

Fig. 4 is a sketch of the stamping passability of the body side wall part on the feed side provided by the embodiment of the present application;

Fig. 5 is a sketch of the stamping passability of the body side wall parts on the discharge side provided by the embodiment of the present application;

Fig. 6 is a schematic flow diagram 1 of a part stamping passability detection method provided by the embodiment of the present application;

Fig. 7 is a schematic flow diagram II of a part stamping passability detection method provided by the embodiment of the present application;

Fig. 8 is a schematic flow diagram III of a part stamping passability detection method provided by the embodiment of the present application;

FIG. 9 is a schematic flow diagram 4 of a method for detecting passability of part stamping provided by the embodiment of the present application.

Reference signs:

1-press 1; 11-press slider; 12-pressor; 13-press machine table; 14-upper die base; 15-lower die base; Risk point of feed interference; C- risk point of discharge interference; H1- presser stroke parameter; H2- relative height difference parameter of grabbing component; H3- relative height difference parameter of feed side; H4- feed side height of punch ;H51-the first safety margin parameter; H52-the second safety margin parameter; H6-the relative height difference parameter of the discharge side; H7-the maximum stroke parameter of the slider.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the specific technical solutions of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

In the embodiments of the present application, the terms "first" and "second" are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

In addition, in the embodiments of the present application, orientation terms such as "upper", "lower", "left" and "right" are defined relative to the schematic placement orientations of components in the drawings. It should be understood that these orientations The terminology is a relative concept, and they are used for description and clarification relative to each other, which may change correspondingly according to the change of orientation of parts placed in the drawings.

In this embodiment of the application, unless otherwise specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be a direct connection , can also be indirectly connected through an intermediary.

In the embodiments of the present application, the term "comprising", "comprising" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes Including other elements not expressly listed, or also including elements inherent in such process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

In the embodiments of the present application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

With the continuous expansion of production and sales in the automobile industry, major automobile manufacturers are also constantly demanding to improve production efficiency on the production line. As the most effective means to improve production efficiency, automated production has been developed on a large scale. Stamping is the first process of automobile production, and the development speed of stamping automation is also very fast. In recent years, the popularity of automated stamping production lines in domestic mainstream automobile factories has been very high, and the pace is getting faster and faster.

At present, the typical stamping automation forms are mainly divided into two types: robot form and manipulator form. The principle is the same, that is, the stamping sheet is transported manually by a robot or a manipulator. For example, taking the form of manipulators as an example, the main automation equipment of the entire stamping automatic line is divided into: loading trolley, unstacking manipulator, belt conveyor, centering system, feeding manipulator, conveying manipulator, unloading manipulator, unloading belt machine, etc. The main workflow of its automated stamping production line is: workshop workers place the blanks on the loading trolley with a crane or forklift, and place the mold on the mobile workbench of the press with a crane. The feeding trolley enters the production line, the mobile table with molds enters the press, and the production line starts. The waste hopper on the side of each press is opened, and the waste line runs automatically. The unstacking manipulator grabs a piece from the loading trolley and sends it to the belt conveyor. After that, the piece enters the washing machine and oiler for cleaning and oiling, and then Enter the centering device for centering, and then the feeding manipulator grabs and sends it to the first press for stamping and forming, and then sends the material sheet to the press of each process through the conveying manipulator to complete the specified stamping work, and finally by The unloading manipulator places the finished stamping parts on the unloading belt conveyor, manual inspection, and finally off-line loading into baskets.

In the stamping production process, the press is responsible for the stamping production of the parts, the automation equipment is responsible for transporting the parts from the press, and the mold is responsible for producing the sheet into the required shape. During the tooling, it is installed on the press In the middle of the working table and the slider, in order to make the stamping parts smoothly transported from one press to the next press, its passability must be fully considered. The content related to the passability involves the stroke of the press slider, the mold The height of the reference plane and the operating space of the automation equipment. Usually, in stamping automation production, the number and type of press equipment in the production workshop are limited. When a certain press is designated as a stamping press, the maximum stroke of its slider is determined. In addition, in the stamping automation production, the manipulator needs to occupy the space in the press to smoothly transport the stamping parts from one press to the next press. Usually, for different stamping parts, due to its The space used temporarily varies with the shape. The occupied space of the manipulator usually refers to the space between the upper limit and the lower limit required for the motion curve of each part.

In the early stage of part modeling design, according to the division of labor in the early stage, which production line has been clarified, but this stage is too close to the early stage, there is no mold structure diagram, and it is impossible to judge whether the part meets the requirements of the production line according to the traditional method of judging the passability of the part. Moreover, because some production lines are relatively old, there is no interference curve, and it is impossible to judge the passability of parts by combining the interference curve with the mold diagram.

In previous projects, at this stage, there was no effective judgment method to provide passing guidance on parts division, and often only the parts of previous projects could be referred to, and restrictions on parts division were put forward. Under the current industry trend of more and more exaggerated shapes, refer to previous projects The size has been unable to effectively meet the needs of the existing shape for partitioning. It is easy to appear that the parts designed in the early stage cannot meet the stamping production line.

For this reason, the embodiment of the present application provides a part stamping passability detection method, which is applied to the stamping passability detection in the early stage of part modeling design. Referring to Fig. 4, Fig. 5 and Fig. 6, the part stamping passability detection method includes the following steps:

Step S100: Obtain the maximum relative height difference of the modeling surface of the part along the stamping direction;

Step S200: Obtain the maximum stroke parameter of the slider of the subsequent process press;

Step S300: Obtain the stamping passability parameters of the feed side and the discharge side stamping passability parameters of the molding surface, the stamping passability parameters of the feed side include at least the relative height difference parameters of the feed side of the molding surface of the part, and the stamping passability parameters of the discharge side The performance parameters at least include the relative height difference parameter of the discharge side of the modeling surface of the part; wherein, the passability parameter of the feed side and the punching passability parameter of the discharge side are the parameters of the relative height difference of the part's modeling surface at the maximum value of the relative height difference. Passability parameters when passing through the press;

Step S400: Based on the stamping passability parameters of the feed side, the stamping passability parameters of the discharge side and the maximum stroke parameter of the slider, determine the detection result of the stamping passability of the part, and the detection result is used to indicate whether the part meets the stamping passability of the part.

Among them, the type of parts is not limited, such as, it can be the side wall of the vehicle body, the fender, the engine cover and the back door, etc., because the possibility of problems with the passability of the side wall is relatively high, therefore, in the embodiment of the present application, Unless otherwise specified, the side wall 3 is taken as an example for description. Specifically, through step S100, in the early stage of automobile modeling design, the side wall 3 modeling surface is designed, and the relative height difference parameter values of the side wall 3 parts are extracted, for example, the parameter values of the relative height difference in different directions along the side wall 3, Usually, through the process analysis of the side wall 3 parts, when the side wall 3 stamping direction is along the vehicle body height direction, the side wall 3 parts have the worst passability. Therefore, the side wall 3 parts can pass through the press when they are along the vehicle body height direction. 1 production line, the side wall 3 parts can also meet the passability of the press 1 production line in other directions, that is, when extracting the relative height difference parameter values of the side wall 3 parts in multiple different directions, at least the parts in the stamping direction should be included The maximum value of the relative height difference in the relative height difference of the modeling surface. Through step S200, the maximum stroke parameter H7 of the slider of the post-process press 1 is obtained. Here, the maximum stroke parameter H7 of the slider of the press 1 refers to the movement of the slider from the bottom dead center to the top dead center of the press during the stamping production process. Here, when a certain press 1 production line is selected, that is, the maximum stroke parameter H7 of the slider of press 1 is usually unchanged. Therefore, it is necessary to obtain various stamping passes of the part in the early stage of part modeling design. The performance parameter is used to compare with the maximum stroke parameter H7 of the slider of the press 1, so as to judge whether the parts in the early stage of the modeling design can meet the passability of the stamping production line of the press 1.

Therefore, it is necessary to further pass step S300 to obtain the stamping passability parameters of the feed side and the discharge side under the condition of the maximum relative height difference of the molding surface of the part along the stamping direction, such as referring to Fig. 1, Fig. 2 and Figure 3. Taking the side wall 3 part as an example, when the side wall 3 part passes through the press production line in the direction of the body height of the side wall 3 part, that is, when the relative height difference of the side wall 3 part is at the maximum relative height difference, it is necessary to obtain Stamping passability parameters on the material side, where the stamping passability parameters on the feed side include at least the relative height difference parameter H3 on the feed side of the part; correspondingly, the stamping passability parameters on the discharge side at least include the relative height difference parameter H6 on the discharge side of the part . Here, at least including the relative height difference parameter H3 of the feed side of the parts specifically means that when the parts pass through the press 1 on the feed side, usually in order to improve the automation of the stamping production line, the parts need to be automatically grasped by a grabbing component 2 such as a robot arm, In this case, since the grabbing components 2 such as the robot arm need to occupy the stamping space of the press 1, the relative height difference parameter H2 of the grabbing component 2 such as the robot arm must also be considered. In addition, the risk of interference when feeding parts is considered , it is usually also necessary to design the safety margin parameters for parts stamping, so that even if the stamping production line uses grabbing components such as robotic arms to grab parts and does not design safety margin parameters, the parts must be placed on the feed side Passing through the stamping production line must also at least include the relative height difference parameter H3 of the feed side of the part, and make it smaller than the maximum stroke parameter H7 of the slider, in order to achieve the minimum required conditions for the parts to pass through the stamping production line on the feed side. Similarly, the discharge side also needs to include at least the relative height difference parameter H6 of the discharge side of the part.

Among them, through step S400, based on the above parameters of the stamping passability of the feed side, the stamping passability parameters of the discharge side and the maximum stroke parameter H7 of the slider, the detection result of the stamping passability of the part is determined, specifically, the stamping passability of the feed side The relative height difference parameter H3 of the feed side of the part included in the passability parameters and other possible feed side stamping passability parameters are compared with the maximum stroke parameter H7 of the slider of the press 1, for example, the feed side stamping passability The sum of each parameter is less than the maximum stroke parameter H7 of the slider, and the sum of the parameters of the punching passability of the discharge side is also less than the maximum stroke parameter H7 of the slider, it can be determined that the part can pass through the stamping production line, and if all the parameters of the feed side and or the output If at least one of the sum of all parameters on the material side is greater than the maximum stroke parameter H7 of the slider, it can be determined that the part cannot pass through the stamping production line. Therefore, the passing test result can be used to characterize whether the part meets the stamping passability of the part. Through the above detection method, it can be realized that even if the stamping production line is old and there is no interference curve, and there is no mold drawing in the early modeling stage, it can still detect whether the part meets the stamping passability of the press 1.

In some embodiments, the punching passability parameters on the feed side and the punching passability parameters on the discharge side both include the stroke parameter H1 of the feeder, the relative height difference parameter H2 of the grasping assembly 2 along the stamping direction of the part, and the safety margin parameter . Among them, in order to improve the automation of the stamping production line, it is usually necessary to automatically grasp the parts through the grasping component 2. In this case, since the grasping component 2 needs to occupy the stamping space of the press 1 along the stamping direction, it is often necessary to consider the grasping Component 2 relative height difference parameter H2. In addition, considering that there is an interference risk area when the parts are fed, it is usually necessary to design the safety margin parameters for the stamping of the parts. In this way, it is possible to ensure that the parts designed in the early stage of the modeling design can pass through the stamping production line without reducing the stamping efficiency. Here, the stroke parameter H1 of the presser can refer to the gap between the presser plate and the fixed plate of the punch, which is also commonly called the upper mold activity, and its size is related to the product and the mold structure. , The stroke parameter H1 of the feeder can also be determined.

In some embodiments, referring to FIG. 4 and FIG. 5 , both the punching passability parameters on the feed side and the punching passability parameters on the discharge side also include reserved safety values, which are used to adjust the part structure for the later stage of the press 1 Reserve a safe amount. For example, the reserved safety value is used to reserve a safe amount for the later adjustment of the press, the arrangement of the wedge, the stop rod, and the increase of the structural surface of the part. In order to meet the stamping passability of parts in various processes.

Referring to Fig. 4, Fig. 5 and Fig. 7, step S400 includes step S401 and step S402, wherein step S401: the stroke parameter H1 of the presser, the safety margin parameter, the relative height difference parameter H2 of the grasping assembly 2, the feeding The side relative height difference parameter H3, the punch feed side height H4 parameter and the reserved safety value are summed to obtain the stamping passability parameter of the feed side; the stroke parameter H1 of the presser, the safety margin parameter, and the grabbing component 2 The relative height difference parameter H2, the relative height difference parameter H6 of the discharge side, the height H4 parameter of the feed side of the punch and the reserved safety value are summed to obtain the stamping passability parameter of the discharge side. Step S402: Determine whether the punching passability parameter at the feed side and the punch passability parameter at the discharge side are both smaller than the maximum stroke parameter H7 of the slider. Among them, if the stamping passability parameters on the feed side and the stamping passability parameters on the discharge side are both less than the maximum stroke parameter H7 of the slider, it is determined that the part meets the stamping passability; if the stamping passability parameters on the feed side and the discharge side If at least one of the stamping passability parameters sum is greater than or equal to the maximum stroke parameter H7 of the slider, it is determined that the part does not meet the stamping passability.

Here, it needs to be explained that, for example, on the feed side, in addition to the stroke parameter H1 of the presser, the safety margin parameter, the relative height difference parameter H2 of the grabbing component, the relative height difference parameter H3 of the feed side, and the height of the punch feed side In addition to the H4 parameter and the reserved safety value, other parameter values can also be added according to the actual needs of the part modeling surface, which is not limited.

In some embodiments, with reference to Fig. 4, Fig. 5 and Fig. 9, after step S402, if the part does not meet the stamping passability, proceed to step S001: rebuild the modeling surface of the part; and re-extract the parameter value of the relative height difference of the part . Among them, the part does not meet the stamping passability, including that the part does not meet the stamping passability of the part on the feed side and/or the discharge side. When this happens, the modeling surface of the part can be rebuilt to adapt to the passability of the stamping production line , at this time, the adjusted part does not necessarily meet the stamping passability, it is necessary to re-extract the parameter value of the relative height difference of the part and repeat steps S100 to S400 until the designed part meets the stamping passability of the part.

In some embodiments, the relative height difference parameter H3 at the feed side and the relative height difference parameter H6 at the discharge side are both less than or equal to the maximum value of the relative height difference. Among them, the determination of the relative height difference parameter H3 on the feed side and the relative height difference parameter value H6 on the discharge side can be determined according to the situation when the different molding surfaces of the parts pass through the press. Both the difference parameter H3 and the relative height difference parameter value H6 on the discharge side are less than or equal to the maximum value of the relative height difference. For example, referring to Fig. 4 and Fig. 5, taking the molding surface of the side wall 3 as an example in the case of the maximum relative height difference along the punching direction, the relative height difference parameter H3 on the feed side is equal to the relative height difference The maximum value and the relative height difference parameter H6 on the discharge side are less than the maximum value of the relative height difference. Here, the reason why the relative height difference parameters corresponding to the worst passability of the parts on the feed side and the discharge side are respectively used as the relative height difference parameter H3 of the feed side and the relative height difference parameter H6 of the discharge side is because of this situation Next, if the part satisfies the stamping passability, then when the part changes its position and angle relative to the press 1 along the stamping direction, it usually also meets the stamping passability.

4 and 5, the safety margin parameters include a first safety margin parameter H51 and a second safety margin parameter H52, wherein the gripping assembly 2 and the upper mold base 14 of the press 1 The interference risk area has a first safety margin, so that the grasping assembly 2 avoids the upper mold base 14; the interference risk area between the end of the lower mold base 15 and the lower mold base 15 of the part along the stamping direction has the first Two safety margins, so that the parts avoid the lower mold base 15. Here, the design of the first safety margin and the second safety margin can further ensure that the parts designed at the initial stage of modeling can meet the stamping passability of the parts. In addition, among them, the first safety margin parameter H51 and the second safety margin parameter H52 may be equal or unequal and are not specifically limited.

Further, referring to FIG. 4 and FIG. 5 , along the part stamping direction, the height difference between the upper end surface of the grab assembly 2 and the risk point B of the feed interference risk point B on the upper die base 14 and the upper end surface of the grab assembly 2 and the upper die base 14 The height difference between the upper discharge interference risk points C is the first safety margin parameter H51. Among them, since the grabbing component 2 picks and places parts in the stamping space, its pick-and-place movement trajectory will inevitably deviate from the theoretical design result. The above design can provide a margin for the movement deviation of the grabbing component 2, so that The grabbing component 2 avoids bumping the press 1 in the risk area of easy interference, thereby affecting the stamping passability of the parts.

In some embodiments, referring to FIG. 4 , FIG. 5 and FIG. 8 , step S401 also includes step S4011 and step S4012, wherein, step S4011: create a stamping passing sketch on the feeding side of the part, and along the stamping direction of the part, in Between the slider 11 of the press 1 and the press bed 13 on the stamping passability sketch on the feed side of the part, obtain and mark the stroke parameter H1 of the presser, the first safety margin parameter H51, the grasping The relative height difference parameter H2 of component 2, the relative height difference parameter H3 of the feed side, the height H4 parameter of the feed side of the punch, the second safety margin parameter H52, and the sum of all the obtained above parameters and the reserved safety value, Get the feed side stamping passability parameters and . Among them, if the sum of the stamping passability parameters on the feed side is less than the maximum stroke parameter H7 of the slider, it is determined that the part meets the stamping passability on the feed side; if the sum of the stamping passability parameters on the feed side is greater than or equal to the maximum stroke parameter H7 of the slider , it is determined that the part does not meet the stamping passability. In this way, through the created feed-side stamping passability sketch, it is possible to analyze more intuitively whether the part satisfies the passability, and it is convenient to analyze the risk points that are easy to interfere according to the part shape, and configure the feed-side stamping passability parameters and the discharge side. Stamping passability parameters.

If the stamping passability parameter on the feed side is not greater than the maximum stroke parameter H7 of the slider, then after step S4011, proceed to step S4012. Step S4012 includes creating a stamping passability sketch on the discharge side of the part, and along the stamping direction of the part, on the part Between the press slider 11 and the press bed 13 in the passability sketch on the discharge side, obtain and mark the press stroke parameter H1, the first safety margin parameter H51, and the relative height of the grabbing component 2 from top to bottom. The difference parameter H2, the relative height difference parameter of the discharge side H6, the height parameter of the feed side of the punch H4, the second safety margin parameter H52, and the sum of all the obtained above parameters and the reserved safety value are obtained to obtain the discharge side The sum of stamping passability parameters; among them, if the sum of stamping passability parameters on the discharge side is less than the maximum stroke parameter H7 of the slider, it is determined that the part meets the stamping passability; if the sum of stamping passability parameters on the discharge side is greater than or equal to the maximum stroke parameter of the slider H7, it is determined that the part does not meet the stamping passability.

In addition, in some embodiments, taking the part of the side wall 3 at the initial stage of automobile modeling design as an example, referring to Fig. 4, Fig. 5 and Fig. 9, in combination with step S100, first extract the maximum relative height difference of the side wall 3 in the stamping direction. value, that is, the profile extracted from the deepest part of the relative height difference of side wall 3, as shown in Figure 3. Combined with step S200, the selected stamping production line is determined, and the maximum stroke parameter of the slider 11 of the post-process press is obtained. For example, the maximum stroke parameter H7 of the slider is 1100 mm. Combined with step S300, obtain the stroke parameter H1 of the presser as 70mm, the relative height difference parameter H2 of the grasping component 2 is 700mm, the relative height difference of the feed side of the side wall 3 is 1100mm, the height H4 of the feed side of the punch is 1100mm, and the side height difference is 1100mm. The relative height difference of the discharge side of enclosure 3 is 1100mm, the first safety margin parameter H51 and the second safety margin parameter H52 are both 30mm, and the reserved safety value is 50mm. Continuing, in combination with step S400, respectively create the passability sketches of the feed side and discharge side of the side wall 3, as shown in Figure 4 and Figure 5, and calculate the post-process press 1 on the feed side and discharge side respectively. Passability. Specifically, step S4011 and step S4012 are combined, wherein, the stroke parameter H1 of the presser on the feed side, the first safety margin parameter H51, the relative height difference parameter H2 of the grabbing assembly 2, and the relative height difference parameter H3 of the feed side , the second safety margin parameter H52, the height H4 of the feed side of the punch and the reserved safety value are summed, and the calculation formula for the stamping passability of the part on the feed side is H1+H51+H2+H3+H52+H4+a , that is, 70+30+250+440+30+230+50=1100mm, where a represents a reserved safety value. At this time, the sum of the parameters on the feed side is not greater than H7 (1100mm), that is, the part meets the passability on the feed side. Continuing, the stroke parameter H1 of the presser on the discharge side, the first safety margin parameter H51, the relative height difference parameter H2 of the grasping component 2, the relative height difference parameter H6 of the discharge side, the second safety margin parameter H52, the convex The height H4 of the feed side of the mold and the reserved safety value a are summed. Here, correspondingly, the calculation formula of the discharge side is H1+H51+H2+H6+H52+H4. Combined with the values of the parameters in the example, and The sum of each parameter value is 70+30+250+230+30+230+50=890mm<1100mm, that is, the side wall 3 part meets the passability requirement. On the contrary, if the sum of the parameters on the feed side and the discharge side is greater than 1100mm at least on one side, the part does not meet the stamping passability.

It should be noted that the above parameter values are an example reference value of a body side panel 3 part, that is, the body side panel 3 part is used as an example of checking whether it can pass through the stamping production line. For example, when judging the stamping passability of other parts on the press 1, the relative height difference parameter H6 value of the feed side and the discharge side of the part and the height H4 of the feed side of the punch can be adjusted, wherein the presser stroke The parameter H1, the relative height difference parameter H2 of the grasping component 2, and the reserved safety value a may remain unchanged.

The serial numbers of the above embodiments of the present application are for description only, and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structures or equivalent process transformations made by using the description of the application and the accompanying drawings are directly or indirectly used in other related technical fields. , are all included in the patent protection scope of the present application in the same way.

Claims (10)

1. A part stamping passability detection method is characterized in that it is applied to the stamping passability detection in the early stage of part modeling design, including: Obtain the maximum relative height difference of the modeling surface of the part along the stamping direction; Obtain the maximum stroke parameters of the slider of the subsequent process press; Acquiring the stamping passability parameter of the feed side and the stamping passability parameter of the discharge side of the molding surface, the stamping passability parameter of the feed side at least includes the relative height difference parameter of the feed side of the molding surface of the part, the The punching passability parameter of the discharge side at least includes the relative height difference parameter of the discharge side of the modeling surface of the part; wherein, the passability parameter of the feed side and the punch passability parameter of the discharge side are both parameters of the part. Passability parameters when the molding surface needs to pass through the press under the condition of the maximum relative height difference; Based on the stamping passability parameter of the feed side, the stamping passability parameter of the discharge side and the maximum stroke parameter of the slider, determine the detection result of the stamping passability of the part, and the detection result is used to characterize the part Whether it meets the stamping passability of parts. 2. The part punching passability detection method according to claim 1, characterized in that, the punching passability parameters of the feed side and the punching passability parameters of the discharge side both include the stroke parameters of the presser, and the punching parameters along the part. The relative height difference parameter and the safety margin parameter of the grasping component in the direction. 3. The part stamping passability detection method according to claim 2, characterized in that, both the feed-side stamping passability parameter and the discharge-side stamping passability parameter also include a reserved safety value, and the preset The reserved safety value is used to reserve a safe amount for adjusting the structural surface of the part in the later stage of the press. 4. The part stamping passability detection method according to claim 3, characterized in that, the stamping passability parameter based on the feed side, the stamping passability parameter at the discharge side and the maximum stroke parameter of the slider , in the step of determining the detection result of stamping passability of the part, including: For the stroke parameter of the presser, the safety margin parameter, the relative height difference parameter of the grasping component, the relative height difference parameter of the feed side, the height parameter of the feed side of the punch and the reserved safety value The summation is performed to obtain the sum of the stamping passability parameters on the feed side; For the stroke parameter of the presser, the safety margin parameter, the relative height difference parameter of the grasping component, the relative height difference parameter of the discharge side, the height parameter of the feed side of the punch and the reserved The safety value is summed to obtain the stamping passability parameter sum of the discharge side; Judging whether the sum of the stamping passability parameters on the feed side and the stamping passability parameters on the discharge side is less than the maximum stroke parameter of the slider; If the stamping passability parameter of the feed side and the stamping passability parameter of the discharge side are both less than the maximum stroke parameter of the slider, it is determined that the part meets the stamping passability; If at least one of the feed-side stamping passability parameter and the discharge-side stamping passability parameter sum is greater than or equal to the slider maximum stroke parameter, it is determined that the part does not meet the stamping passability. 5. The part stamping passability detection method according to claim 1, characterized in that, based on the stamping passability parameter of the feed side, the stamping passability parameter of the discharge side and the maximum stroke of the slider Parameters, after the step of determining the test result of stamping passability of the part, it also includes: If the part does not meet the stamping passability, the modeling surface of the part is reconstructed, and the parameter value of the relative height difference of the part is re-extracted. 6. The stamping passability detection method of parts according to claim 1, characterized in that, the relative height difference parameter of the feed side and the relative height difference parameter of the discharge side are both less than or equal to the maximum value of the relative height difference . 7. The method for testing passability of part punching according to claim 4, wherein the safety margin parameters include a first safety margin parameter and a second safety margin parameter, wherein, between the grasping assembly and The interference risk area between the upper die seats of the press has a first safety margin, so that the grasping assembly avoids the upper die seats; There is a second safety margin in the interference risk area between the end of the part close to the lower die seat of the press along the stamping direction and the lower die seat, so that the part avoids the lower die seat. 8. The part stamping passability detection method according to claim 7, characterized in that, along the part stamping direction, the distance between the upper end surface of the grasping assembly and the risk point of feeding interference on the upper die base is The height difference and the height difference between the upper end surface of the grasping component and the risk point of discharge interference on the upper mold base are the first safety margin parameters. 9. The part stamping passability detection method according to claim 8, characterized in that, the stamping passability parameter based on the feed side, the stamping passability parameter at the discharge side and the maximum stroke parameter of the slider , in the step of determining the test result of stamping passability of the part, further comprising: Create the stamping passability sketch on the feed side of the part, and along the stamping direction of the part, between the press slider and the press bed on the stamping passability sketch on the feed side of the part, sequentially acquire and obtain from top to bottom Mark the stroke parameter of the presser, the first safety margin parameter, the relative height difference parameter of the grasping component, the relative height difference parameter of the feed side, the height parameter of the feed side of the punch, and the the second safety margin parameter, and sum all the obtained parameters and the reserved safety value to obtain the stamping passability parameter sum of the feed side; If the sum of the stamping passability parameters on the feed side is less than the maximum stroke parameter of the slider, it is determined that the part meets the stamping passability on the feed side; If the sum of the stamping passability parameters on the feed side is greater than or equal to the maximum stroke parameter of the slider, it is determined that the part does not meet the stamping passability. 10. The method for detecting stamping passability of parts according to claim 9, characterized in that, if the stamping passability parameter of the feed side is less than the maximum stroke parameter of the slider, it is determined that the part is being fed After the step of meeting stamping passability on the side, it also includes: Create the stamping passability sketch on the discharge side of the part, and along the stamping direction of the part, between the press slider and the press bed on the stamping passability sketch on the discharge side of the part, from top to bottom Obtaining and marking the stroke parameter of the presser, the first safety margin parameter, the relative height difference parameter of the grasping component, the relative height difference parameter of the discharge side, and the height parameter of the feed side of the punch , the second safety margin parameter, and summing all the obtained above-mentioned parameters and the reserved safety value to obtain the stamping passability parameter sum of the discharge side; If the sum of the stamping passability parameters on the discharge side is less than the maximum stroke parameter of the slider, it is determined that the part meets the stamping passability; If the sum of the stamping passability parameters on the discharge side is greater than or equal to the maximum stroke parameter of the slider, it is determined that the part does not meet the stamping passability.

Images