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研究生:高嘉懋
研究生(外文):Jia-mao Gao
論文名稱:考慮工具機空間誤差與製程變異之產品誤差模式建立與驗證
論文名稱(外文):The Establishment and Verification of Products Error Model Considering Process Variance and Spatial Errors of Machine Tool
指導教授:王俊志
指導教授(外文):Jiunn-Jyh Junz Wang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:機械工程學系碩博士班
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:86
中文關鍵詞:變異數分析工具機誤差模式製程變異放電加工銑削
外文關鍵詞:Micro-EDMMilling processAnalysis of varianceProcess varianceVariance of error of machine tool
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本文導入變異數觀念先建立與驗證工具機空間誤差變異模式以及藉放電加工建立與確認一套有效判認製程變異的方法,進一步結合工具機誤差模式與加工製程變異估測不同加工條件銑削後之工件幾何尺寸誤差。
研究先以向量法完成XYFZ構型之三軸工具機誤差模式,再導入變異數分析法建立工具機幾何誤差變異影響空間誤差變異之模式。經由雷射對角線量測實驗,此模式成功模擬出路徑誤差範圍於兩個標準差準確包含實際量測之循圓路徑,意即具信心指出路徑95%之範圍。為建立判認製程變異方法,本研究則藉放電加工製程為研究載具。先以標準件法量測出各製程變異數據,再利用變異數分析方法考慮交互作用已可成功判認製程變異與估測機台誤差。
最後,統合工具機空間誤差變異模式與製程變異分析方法,銑削工件的幾何尺寸誤差可有被估測並已經由實驗驗證。因此,對一現有機台,本研究方法可設計適當的製程參數以達到最適工件品質要求。
By analysis of variance, variance model of spatial error of machine tool and a method for identification of process variance both have been developed and verified. Further, the geometrical dimensional error of a milling product can be estimated by combining spatial error of machine tool and processing variance under different cutting conditions.
The kinematical spatial error model for XYFZ machine configuration was first investigated using vector method. Based on analysis of variance, the spatial error model considering stochastic nature then has been developed. This model was validated through experiments conducted on a milling machine with laser diagonal method as measurement. The two standard-deviation estimated is shown to excellent agreement with measured. For identification of process variance by analysis of variance, a series of EDMed experiments were performed and their results discussed to validate this method. Through considering coupling effect, the results shown that process variance and machine error can be estimated accurately by proposed.
With spatial error model of machine tool and the analysis method of process variance, the investigation of milling process shown that the geometrical dimensional error of a milling product can been evaluated. For a given machine tool, the appropriate process parameters can be designed to achieve the best work quality.
摘要 I
Abstract II
誌謝 III
目錄 IV
表目錄 VII
圖目錄 VIII
符號說明 XI
第一章 緒論 1
1.1 研究動機與目的 1
1.2 文獻回顧 3
1.2.1 工具機系統性誤差 3
1.2.2 工具機非系統性誤差 9
1.2.3 製程誤差 10
1.3 研究範疇與論文架構 11
第二章 建立工具機空間誤差與其變異模式 13
2.1 前言 13
2.2 工具機空間誤差模式 15
2.3 工具機空間誤差變異數分析法建立 22
第三章 工具機空間誤差變異實驗與驗證 26
3.1 前言 26
3.2 對角線向量分析模式與工具機誤差模式簡化 27
3.3 工具機誤差量測實驗 30
3.4 結果分析與模擬驗證 33
第四章 放電加工製程變異分析 39
4.1 前言 39
4.2 製程誤差變異模式 41
4.2.1 側邊過切量之變異模式 41
4.2.2 底部過切量之變異模式 44
4.3製程誤差變異實驗 45
4.3.1 實驗設置與流程 45
4.3.2 實驗結果 49
4.4 變異分析與討論 53
第五章 結合工具機誤差與製程剛性預測產品精度 57
5.1 前言 57
5.2 產品誤差設計實驗 58
5.2.1 實驗設置 58
5.2.2 數學模式推導 63
5.2.3 實驗規畫與步驟 67
5.2.4 實驗結果 68
5.3 分析與討論 74
第六章 結論與建議 81
自述 86
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