CN1766888A - Mold designing system and method - Google Patents

Abstract

The invention provides a mold design system and method. It is mainly to parametrically design the mold design process, that is, to modify the corresponding parameters of the designed mold corresponding to the standard mold to carry out the mold design. It mainly includes the following steps: standardize the design of commonly used moulds; classify the above-mentioned standardized design moulds; select the part of the mold that needs to be designed, and determine its tool position; set relevant parameters, such as machine type, tool type, tool name, mold base , Material, material thickness, fillet treatment; the system automatically calculates the clearance and stamping force according to the above input parameters; generates the relevant graphics and mold assembly drawing files of the mold according to the above parameters. The invention can effectively improve the design efficiency, and can simplify and make the mold design process more precise.

Description

Mold Design System and Method

【Technical field】

The invention relates to a system and method for mold design, in particular to a system and method for parametric design of molds.

【Background technique】

The product development process includes different stages such as product design, mold design, and mold processing. Among them, mold design plays a vital role in ensuring product quality. General products are composed of multiple parts. The mold design process is to design a set of molds for each part and draw the corresponding graphics. Most of the traditional mold designs are manually designed and drawn by designers. Not only is it difficult to find the errors and whether the cooperation between the parts of the mold is reasonable, but also the main defect is that it is difficult to modify the drawings drawn by hand. When there are design errors, processing Mistakes and mold transfers require modification of the mold design drawings, which brings great inconvenience to the mold design.

At present, in the field of mechanical design, with the development of computer technology, traditional manual drawing has been gradually replaced by computer drawing. The AutoCAD software developed by Autodesk provides a powerful tool for mold design. Although this auxiliary drawing tool avoids the The shortcomings of manual drawing modification are difficult and the error rate is high, but since the mold of each part is generally composed of upper die, punch, upper die holder, splint, lower die, lower die holder, stripper and other parts, each design The mold of a part needs to redesign all parts of the mold, and in view of the many similarities between some parts, if each part of each part of each new product is designed one by one based on AutoCAD tools, it will take a lot of work. Repetitive actions affect the efficiency of mold design.

Patent application No. CN 1436648A published by the State Intellectual Property Office of China on August 20, 2003, titled "Auxiliary Method and System for Mold Component Design", discloses a mold design system and method for standardized mold design , which incorporates the standard part data supplied to professional manufacturers such as the mold body and mold accessory parts into this mold design system. Carry out mold shell-mold core design, activate the system at each stage of design, supply data from CAD intermediate files, select the available mold body on the display screen of this system, and then select mold parts, and then process.

Although the above application also standardized the parts of the mold design, the standard molds it provided were limited to the processing standards based on professional manufacturers and could not be changed at any time. When developing new molds, if there are new specifications The standard mold needs to be redeveloped so that its efficiency has not been significantly improved.

【Content of invention】

The main purpose of the present invention is to provide a system for mold design, which generates standard molds and stores them in the database by standardizing the commonly used molds, and calls the standard molds in the database during the mold design process. Modify the parameters, that is, carry out parametric mold design.

Another object of the present invention is to provide a method for mold design, which generates standard molds by standardizing commonly used molds and stores them in the database, and calls the standard molds in the database during the mold design process. Modify the parameters, that is, carry out parametric mold design.

To achieve the above object, the present invention provides a mold design system. The system includes a display, a host, a database and an input device such as a keyboard (or mouse), wherein the display provides the user with a mold design interface through which the user can perform related operations on mold design and display the generated related designs Drawing files; the host computer is used to process the relevant operation process of the design, and coordinate the information transmission between various hardware; the standard mold and related data defined by the database storage system can be directly retrieved from the database when it is to be used; the input device keyboard (or Mouse) can be used to operate the specific process of mold design, such as selecting objects, input parameters, etc. Among them, the main engine includes the following functional modules: a standard mold generation module, a processing shape classification module, a mold design module, and a mold drawing file generation module. The standard mold generation module is used to make various commonly used molds as standard molds and store them in the database; the processed shape classification module is used to classify each standard mold to facilitate the calling of standard molds in the design process; the mold design module is used to Set and modify relevant parameters according to the specific characteristics of the designed mold; the mold drawing file generation module is used to call the standard mold established in the database, and modify it according to the parameters set above, and then automatically generate the relevant drawing file of the mold .

In order to achieve the above object, the present invention provides a mold design method. The method comprises the following steps: (a) carrying out standardized design on commonly used moulds; (b) classifying the above-mentioned standardized designed moulds; (c) calling out product graphics provided by customers from the database; Edit and correct the product graphics; (e) select the mold part to be designed, and determine its tool position; (f) set related parameters, such as machine type, tool type, tool name, mold blank, material, material thickness, fillet treatment ; (g) The system automatically calculates the clearance and stamping force according to the above-mentioned input parameters; (h) Generates the relevant graphics and mold assembly drawing files of the mold according to the above-mentioned parameters.

With the system and method of the present invention, by standardizing the commonly used molds, only simple parameter input is required to automatically generate mold graphics, which can greatly improve design efficiency and reduce mold manufacturing costs. The input of parameters can automatically realize the complex calculation in the mold design, and realize the simplification and precision of the mold design.

【Description of drawings】

Fig. 1 is the hardware architecture figure of mold design system and method of the present invention

Fig. 2 is a functional block diagram of the main engine of the mold design system and method of the present invention.

Fig. 3 is a design main interface diagram of the mold design system and method of the present invention.

Fig. 4 is an operation flowchart of the mold design system and method of the present invention.

【Detailed ways】

As shown in FIG. 1, it is a hardware architecture diagram of the mold design system and method of the present invention. It includes a display 10, a host computer 11, a database 12 and an input device such as a keyboard (or mouse) 13, wherein the display 10 provides the user with an operation interface through which the user can perform related operations on mold design and display the generated Relevant design drawing files; the host computer 11 is used to process the relevant operation process of the design, and coordinate the information transfer between each hardware; the database 12 stores the standard molds and related materials defined by the system, which can be directly retrieved from the database when it is to be used. The standard mold refers to the mold designed with fixed specifications for the specific characteristics of each part; the input device keyboard (or mouse) 13 can be used to operate the specific process of mold design, such as selecting objects, input parameters, etc.

As shown in Fig. 2, it is a functional block diagram of the main engine of the mold design system and method of the present invention. The host machine 11 includes the following functional modules, a standard mold generation module 20 , a processed shape classification module 21 , a mold design module 22 , and a mold drawing file generation module 23 . Wherein, the standard mold generation module 20 is used to make various commonly used molds as standard molds and stores them in the database 12; the processing shape classification module 21 is used to classify each standard mold, so as to facilitate the calling of the standard mold in the design process; The mold design module 22 is used to modify the settings of relevant parameters according to the specific characteristics of the designed mold; the mold drawing file generation module 23 is used to call the standard mold in the database 12, and automatically modify it according to the parameters set above. Generate related drawings of the mold.

As shown in Fig. 3, it is a design main interface diagram of the mold design system and method of the present invention. The interface is composed of two parts, graphic display and operation area 1, mold design control panel 2, graphic display and operation area 1 is used to display product graphics and related graphic files of generated molds, and users can edit product graphics in this area Or the mold drawing files to do corresponding selection, modification and other actions, wherein the product graphics 101 are the product parts that need to be molded provided by the customer. The center of the center shows five concentric circles of different sizes. These concentric circles are the five types of tool stations set in this embodiment. Because during product production, according to the size of the product, the machine for making the mold needs different hole positions to Load the mold, so it needs to be classified according to its size. In this embodiment, it is divided into five categories, namely, tool station A102, tool station B103, tool station C104, tool station D105, and tool station E106. , its range is Φ (diameter) 12mm ~ 127mm, Φ128mm ~ 317mm, Φ318mm ~ 507mm, Φ508mm ~ 889mm, Φ890mm ~ 1140mm, the tool station can be determined according to the area where the product graphic 101 is located, as in this embodiment If the product graphic 101 is within the range of tool station B103, the system will obtain the information and display the corresponding tool station in the field of tool station 204 in the corresponding mold design control panel 2; the mold design control panel 2 is used for Receive the relevant parameters of the mold and generate the final mold graphics according to the received parameters. Among them, the machine type 201 indicates the machine type that the designed mold is suitable for, and the tool type 202 indicates the type of the mold; this system according to the shape of the mold They are divided into three categories according to their application and usage, namely, regular molds, special-shaped molds, and forming molds. Among them, regular molds are molds with regular shapes such as round knives, square knives, rectangular knives, etc. Special-shaped molds are outside the defined regular shape. molds such as multi-hole cutters, different-hole cutters, etc., forming molds are the cutters used when making the external shape of the mold, such as blind hole cutters, convex hull cutters, etc.; the name of the cutter 203 is the name of the standard mold corresponding to the product 101, so , the system can call the standard mold corresponding to the product 101 from the database 12 according to the tool type and name selected by the user; the tool station 204 shows the tool station range to which the mold belongs; the mold base 205 indicates the size of the mold base suitable for the mold , the system provides different mold base size values, the user can choose the value that is larger than the actual product size value and the closest value as the mold base size according to the actual product size, and then according to the actual product size in the process of manufacturing the mold Process it; material 206 indicates the material used to make the mold; material thickness 207 indicates the thickness of the material used to make the mold; gap 208 indicates the distance between the upper mold and the lower mold, and this value will be based on the above input material 206 And the material thickness 207 is automatically calculated by the system, the calculation formula is: gap = coefficient (K) * material thickness (T) / 1000, where the coefficient (K) depends on the material used to make the mold; stamping force 209 represents the The maximum punching force required in the process. For example, in the process of making a mold for a part hole, the required punching force is the amount of punching force required to penetrate the material. This value is automatically calculated by the system. The calculation formula is: : Punching force P (T) = circumference of punching hole (L) * material thickness (T) * shear stress (S) / 1000, wherein, the circumference of the regular part hole is calculated by the circumference calculation formula, and the irregular part Use the List command in the Atuocad command to display the circumference of the hole. The shear stress is a fixed coefficient, and the value corresponding to different materials is also different. The stamping force of the molding die is obtained from empirical values; the rounded corner treatment 210 means making the die Sometimes some places need to be rounded, such as the corners of a square mold, you can enter the radius of the rounded corner here, and the system will round the corners of the mold related graphics according to the input rounded corner value; the tool center 215 indicates the Where the center of the mold is, this value is obtained by the system according to the specific shape of the part and the specific position of the interface; the generated material table 212 indicates that the relevant information of the mold is output according to the above-mentioned input parameters, such as the name of the mold, the type of the mold, and the use of the mold. Material, mold specifications and other components, the relevant personnel can obtain the relevant information of the mold; click the button 213 to generate assembly drawing, and the system will obtain the model corresponding to the mold from the database according to the above-mentioned input parameters, and make corresponding After the modification, the relevant graphics of the mold are displayed, such as the drawing files of the upper mold, punch, upper mold base, splint, lower mold, stripper plate, and mold assembly diagram.

Fig. 4 is an operation flowchart of the mold design system and method of the present invention. First call out the product graphics (step S401) provided by the customer from the database 12; if the product graphics provided by the customer have incomplete parts, it is edited and corrected (step S402); the selection needs to design the mold part, and determine its cutter station (step S403); set relevant parameters (Fig. 3), such as machine type, tool type, tool name, mold base, material, material thickness, etc. (step S404); carry out the calculation of gap and stamping force according to the above-mentioned input parameters (step S405); According to the received parameter tool type and the tool name, call the above-mentioned standard mold from the database 12 and make corresponding modifications to the standard mold according to the above-mentioned received parameters, generate the relevant graphics, mold assembly drawing files and material tables of the mold (step S406).

Claims (13)

1. A mold design system is a system that can carry out mold design by modifying its corresponding parameters in the mold design process by setting up a standard mold of a commonly used mold. It is characterized in that it includes: A display provides the user with a mold design interface, through which the user can perform operations related to mold design, and display product graphics and generated related mold design drawings; A host is used to handle the relevant operation process of mold design and coordinate the information transmission between various hardware; A database stores the standard molds and related materials defined by the system, which can be directly retrieved from the database when they are to be used; An input device keyboard (or mouse) can be used to operate the specific process of mold design, such as selecting objects and input parameters; Among them, the host includes the following modules: A standard mold generation module is used to design various commonly used molds as standard molds and store them in the database; A processing shape classification module is used to classify the above-mentioned designed standard molds; A mold design module is used to set relevant parameters according to the specific characteristics of the product to be designed; A mold drawing file generating module is used to call the above-mentioned standard mold in the database, and automatically generate relevant drawing files of the mold after making corresponding modifications to it according to the above-mentioned set parameters. 2. The mold design system according to claim 1, wherein the processing shape classification module can classify standard molds according to their shapes and uses. 3. The mold design system according to claim 1, wherein the mold design module can automatically determine the applicable machine hole range according to the size of the product. 4. The mold design system as claimed in claim 1, wherein the mold design module can automatically calculate the gap and stamping force, and the calculation formulas are respectively: gap=coefficient (K)*material thickness (T)/1000 , Punching force P (T) = perimeter of the punching hole (L) * material thickness (T) * shear stress (S) / 1000. 5. The mold design system according to claim 1, wherein the mold drawing file generation module can also generate the mold material table while generating the mold related drawing files. 6. A method for mold design is to modify the corresponding parameters in the mold design process to carry out mold design by setting up a standard mold of a commonly used mold in the system. It is characterized in that the method includes the following steps; Standardize the design of commonly used molds; Classify the above-mentioned standardized design molds; Select the part of the mold that needs to be designed, and determine its tool station; Set relevant parameters, such as machine type, tool type, tool name, mold base, material, material thickness, fillet treatment; According to the parameters entered above, the system automatically calculates the clearance and punching force; According to the above parameters, generate the relevant graphics and mold assembly drawings of the mold. 7. The mold design method according to claim 6, further comprising the step of storing the designed standard mold in a database. 8. The mold design method according to claim 6, characterized in that, comprising the step of calling out the product graphics provided by the customer from the database. 9. The mold design method according to claim 6, characterized in that it includes the step of editing and correcting the graphics provided by the customer. 10. The mold design method as claimed in claim 6, wherein the calculation formulas of the gap and the punching force are gap=coefficient (K)*material thickness (T)/1000, and the punching force P(T)= Perimeter of the punching hole (L)*material thickness (T)*shear stress (S)/1000. 11. The mold design method according to claim 6, characterized in that it includes the step of calling a standard mold according to the set mold type and tool name. 12. The mold design method according to claim 6, characterized in that it includes the step of performing fillet processing on the related drawings of the mold according to the fillet value of the input parameter fillet processing. 13. The mold design method according to claim 6, characterized in that it includes the step of generating the mold material table when generating the relevant drawings of the mold.

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