【摘要】：在機械行業(yè)中,滾齒是加工齒輪常用的一種方法,其加工因素較為復(fù)雜,加工工藝的確定大多依靠工人經(jīng)驗,還未形成較規(guī)范的加工工藝體系,這些問題給經(jīng)驗不足的工作人員帶來了麻煩。考慮到這些問題,建立基于實例推理的滾齒加工工藝數(shù)據(jù)庫,將實例推理技術(shù)應(yīng)用于滾齒加工工藝中,用以往加工積累的數(shù)據(jù)和經(jīng)驗去解決新工件的加工,為解決新工件加工中的困難提供了一種有效的解決辦法。同時,云存儲平臺的接入能夠有效地存儲大量工藝數(shù)據(jù),實現(xiàn)了分布式數(shù)據(jù)存儲與數(shù)據(jù)共享。本文主要內(nèi)容有:1.認(rèn)真分析了數(shù)據(jù)庫的一些基本概念、設(shè)計過程,綜合比較幾種嵌入式數(shù)據(jù)庫管理系統(tǒng),最終選擇SQLite作為數(shù)據(jù)庫管理軟件。分析了數(shù)據(jù)庫的具體需求,并對數(shù)據(jù)庫系統(tǒng)進行總體設(shè)計。2.在Windows系統(tǒng)下搭建云存儲平臺,將分布式云存儲技術(shù)應(yīng)用于數(shù)控滾齒加工工藝數(shù)據(jù)庫,并建立數(shù)據(jù)共享瀏覽器,實現(xiàn)了數(shù)據(jù)共享與同步。3.實例推理技術(shù)與遺傳算法相結(jié)合實現(xiàn)了數(shù)據(jù)庫的智能決策。在實例檢索中,利用整體相似度的計算公式查詢出實例庫中與新實例最相似的舊實例,并設(shè)定閾值提高檢索效率。在實例修改中,用遺傳算法優(yōu)化工藝參數(shù),對加工過程中切削參數(shù)的選取具有重要的意義。4.介紹了本系統(tǒng)的開發(fā)平臺及運行環(huán)境,實現(xiàn)了系統(tǒng)各功能模塊。針對數(shù)據(jù)庫的安全性,將基于角色訪問控制模型引入數(shù)據(jù)庫系統(tǒng)的權(quán)限管理中,通過不同角色賦予不同功能的原則實現(xiàn)了數(shù)據(jù)的安全管理。
[Abstract]:In the machinery industry, gear hobbing is a common method of machining gear, its processing factors are more complex, the processing technology depends mostly on the workers' experience, and it has not formed a more standard processing system. These problems bring trouble to the less experienced workers. Considering these problems, the hobbing processing based on case reasoning is established. The process database is applied to the hobbing process. The processing of the new workpiece is solved by the data and experience accumulated in the past. It provides an effective solution to solve the difficulties in the processing of the new workpiece. At the same time, the access of the cloud storage platform can effectively store a large amount of process data and realize the distribution of the process data. Data storage and data sharing. The main contents of this paper are as follows: 1. the basic concepts of the database, the design process, the comprehensive comparison of several embedded database management systems, and the final selection of SQLite as the database management software are selected. The specific requirements of the database are analyzed, and the overall design of the database system is.2. in the Windows system. The cloud storage platform is built, the distributed cloud storage technology is applied to the CNC hobbing processing database, and the data sharing browser is set up. The data sharing and synchronization.3. case reasoning technology and genetic algorithm are combined to realize the intelligent decision of the database. The most similar old instance in the case base and the new instance, and setting the threshold to improve the retrieval efficiency. In the case modification, the genetic algorithm is used to optimize the process parameters, and it has important significance to the selection of the cutting parameters in the processing process..4. introduces the development platform and operating environment of the system, and realizes the function modules of the system. Full nature, the role based access control model is introduced into the authority management of the database system, and the security management of the data is realized through the different roles of different roles.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG612;TP311.13

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