Material-structure-technology-process correlation-based hierarchical database model

A database and correlation technology, applied in database models, hierarchical databases, structured data retrieval, etc., can solve problems such as poor practicability and achieve good practicability.

Active Publication Date: 2018-03-13
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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  • Material-structure-technology-process correlation-based hierarchical database model
  • Material-structure-technology-process correlation-based hierarchical database model

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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 material-structure-technology-process correlation-based hierarchical database model, which is used for solving the technical problem of poor practicality of an existing hierarchical database model. According to the technical scheme, working condition division is performed according to a tool-workpiece contact state and a part structure and position relationship along a processing track; and part structure features are enabled to correspond to a processing technology and process parameters. In the aspect of data storage, the data storage is divided into a cutting basicdata layer, a technology basic data layer and a technology process data layer. The cutting basic data layer stores data such as a tool coating, cutting edge geometry, a constitutive equation and thelike; the technology basic data layer adds tool parameters, a technology method and a tool-workpiece meshing relationship based on the cutting basic data layer; and the technology process data layer stores and adds information such as tool-spindle subsystem information, workpiece-clamp subsystem information, processing environment information, numerical control system information and the like. Thebidirectional mapping among different hierarchical data is realized; and the practicality is high.

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 Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/211G06F16/282
Inventor 张定华陈曦罗明吴宝海王奇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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