The standard part parameter database mainly stores various parameters of standard parts. The parameters of the standard part are divided into key parameters describing the main structural features and auxiliary parameters describing the secondary features. Through the analysis of common standard parts, the relationship between the main parameters and the sub-parameters is established. In addition, according to the nature of the parameters, the parameters are divided into constant parameters, series parameters and continuous parameters that vary within a certain range.
When naming the parameters, the existing mold design standards are fully complied with to meet the designer's usage habits. Since there are many domestic and international standards for the design of the cover mold, when designing the standard parameter database, the various standards are stored in different databases. In each database, the corresponding tables are created according to the classification of standard parts, and each table stores the serialization parameters of a class of standard parts.
This design method can significantly improve the efficiency of program query, and is also conducive to the expansion and maintenance of the database. At present, the database of standard parameters for automobile die issued by Volkswagen, Sugawara and China Association of Automobile Manufacturers has been established. The standard part model library divides the commonly used parts into standard parts and typical structural parts in the cover part standard part library system according to the characteristics of the cover part mold.
The standard parts are divided into 12 types: lifting device, limit device, side punching device, punching device, positioning device, elastic device, pneumatic device, fastening device, pressure unloading device, mounting device, turning device, guiding device, etc. . Typical structural parts are divided into four types: ribs, bosses, lifting lugs, and U-shaped grooves. For each type of standard parts, the corresponding 3D parametric standard piece solid model is established according to the most commonly used specifications.
From the assembly-oriented design point of view, the template file provides the reference points, reference axes and datum planes for assembly according to the assembly position of the standard parts in the mold, which further improves the efficiency of the designer. The naming of the key dimension parameters in the template file is completely consistent with the parameter names of the corresponding standard parts in the standard part parameter database, so that parameterized driving can be conveniently performed.
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