Hierarchical Database Model Based on Material-Structure-Technology-Process Correlation

A technological process and database technology, applied in the direction of database model, hierarchical database, structured data retrieval, etc., can solve the problems of poor practicability

Active Publication Date: 2021-05-07
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0003] In order to overcome the deficiency of poor practicability of the existing hierarchical database model, the present invention provides a hierarchical database model based on material-structure-process-process correlation

Method used

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  • Hierarchical Database Model Based on Material-Structure-Technology-Process Correlation
  • Hierarchical Database Model Based on Material-Structure-Technology-Process Correlation

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Embodiment Construction

[0013] The following examples refer to Figure 1~2 .

[0014] The hierarchical database model based on the material-structure-process-process correlation of the present invention includes dividing the working conditions along the machining trajectory according to the tool-workpiece contact state, part structure and position relationship, and corresponding the part structure with the processing technology and process parameters , to establish the relationship among materials, workpiece structure, process method and processing process. In terms of data storage, the data storage is divided into three levels: cutting basic data layer, process basic data layer, and process data layer. The cutting basic data layer mainly stores tool coating, cutting edge geometry, constitutive equation, cutting force, temperature, chip load, stress basic data; the process basic data layer adds tool parameters, process methods, tool -Workpiece meshing relationship process information; the process d...

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Abstract

The invention discloses a layered database model based on material-structure-process-process correlation, which is used to solve the technical problem of poor practicability of the existing layered database model. The technical solution is to divide the working conditions along the machining trajectory according to the tool-workpiece contact state, part structure and position relationship, and correspond the part structural features with the processing technology and process parameters. In terms of data storage, it is divided into cutting basic data layer, process basic data layer and process data layer. The cutting basic data layer stores data such as tool coating, cutting edge geometry, and constitutive equations; the process basic data layer adds tool parameters, process methods, and tool-workpiece meshing relationships on the basis of the cutting basic data layer; the process data layer stores additional tools ‑Spindle subsystem information, workpiece‑fixture subsystem information, processing environment information and CNC system information. The invention realizes the two-way mapping between different levels of data, and has good practicability.

Description

technical field [0001] The invention relates to a hierarchical database model, in particular to a hierarchical database model based on material-structure-technology-process correlation. Background technique [0002] The document "Chinese Invention Patent Application No. 201510348804.5" discloses a storage method for database data. The object attribute information determines the data domain to which each of the entity objects belongs, and obtains the logical relationship between each of the entity objects and the data domain, creates a wide table in the data according to the logical relationship, and stores each of the entity objects The description data is stored as corresponding to the wide table. This method describes the data storage in the database, and there is no perfect data division method, and the data call and conversion between different databases are not well realized. Contents of the invention [0003] In order to overcome the deficiency of poor practicabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/21G06F16/28
CPCG06F16/211G06F16/282
Inventor 张定华陈曦罗明吴宝海王奇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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