Ontology-based shaft part roughness specification intelligent design method
A design method and technology for shaft parts, applied in geometric CAD and other directions, can solve the problem of difficult and intelligent selection of shaft roughness specifications, and achieve the effect of clear hierarchical relationship
Pending Publication Date: 2022-01-11
GUILIN UNIV OF ELECTRONIC TECH
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[0004] The technical problem to be solved in the present invention is that it is difficult to intelligentize the selection of existing shaft roughness specifications, and proposes an intelligent design method for roughness specifications of shaft parts based on ontology
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[0036] The following takes the output shaft of the two-stage gear reducer as an example for a brief description. The sectional view of the assembly model of the output shaft of the two-stage gear reducer is attached Figure 6 shown. The geometric product roughness specification design process is attached figure 2 As shown, it specifically includes the following steps:
[0037] Step 1. Review the relevant knowledge in the field of roughness specification design of geometric products, and obtain the domain knowledge of roughness specification design according to the document information, expert knowledge and reusable existing ontology in this field.
[0038] According to the domain knowledge of the roughness specification design, the classes and their hierarchical relationships in the roughness specification are constructed. First define the important classes of the domain, as well as the relationship between class attributes and classes. Class is the core of ontology, which...
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The invention belongs to the technical field of roughness specification design and computer-aided tolerance design (CAT), and particularly relates to an ontology-based roughness specification intelligent design method. The method specifically comprises the following steps: (1) constructing an ontology of a roughness standard; (2) establishing an SWRL inference rule of the roughness specification; (3) extracting related information of the roughness specification; (4) constructing a roughness specification instantiation ontology model; (5) combining a Jess inference engine with a SWRL rule, reasoning the roughness specification, and outputting a reasoning result. An ontology reasoning knowledge framework for roughness specification domain knowledge is constructed by using an ontology, and implicit knowledge is reasoned according to dominant domain knowledge to expand a roughness specification knowledge base; in combination with a semantic network rule language rule base, the design of the roughness specification is reasoned according to a specific design of a geometric product and the use environment condition. According to the method, a computer can select proper roughness specification elements, and a quick and effective method is provided for intelligent design of roughness specifications.
Description
technical field [0001] The invention belongs to the technical field of roughness design and computer-aided tolerance design (CAT), and in particular relates to an intelligent design method for the roughness specification of shaft parts based on a body. Background technique [0002] Roughness design of shaft parts is an important part of shaft parts design. According to the current national standard GB 131-2006, it mainly includes surface structure parameter code, limit value, transmission belt, surface texture direction, upper and lower deviation, filter type, Generation of machining technology types, comparison rules and evaluation lengths. In the current geometric product design, the roughness design of shaft parts is often determined manually in the CAD system by designers based on their own experience or understanding of relevant standards. This design method has problems such as low efficiency, low intelligence, and error-prone, which will increase the uncertainty of p...
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IPC IPC(8): G06F30/10
CPCG06F30/10
Inventor 黄美发刘振辉罗民宏刘廷伟裴永琪
Owner GUILIN UNIV OF ELECTRONIC TECH