高精度機(jī)械設(shè)計所涉及的機(jī)床的性能和精度
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高性能機(jī)械加工機(jī)床
2009。 PP 219-260
摘要
本章介紹了主要機(jī)床的設(shè)計,建造和測試方面實現(xiàn)高精度加工零件。不僅機(jī)床還加工過程本身是一個錯誤的部分源代碼。因此,一個全面的看法的機(jī)加工要求。高精度機(jī)械設(shè)計所涉及的一些基本原理和方法,提出了進(jìn)一步深入的研究。一個關(guān)鍵的因素是誤差源識別,研究它們的物理原因和最終的不確定性關(guān)聯(lián)。因此,裝配誤差,熱生長,構(gòu)件的變形和控制不精確的描述。在零部件和組件的錯誤是沿機(jī)器運(yùn)動鏈的傳播,產(chǎn)生較大的位置誤差在刀尖的位置和刀具軸方向。齊次矩陣的使用是一個非常有用的工具,用于估計的誤差傳播。通過切削力引起的撓度變形工具和機(jī)器的另一個重要的誤差源。不幸的是,變形是不可能避免的一些模型現(xiàn)在設(shè)置加工刀具路徑選擇器,這意味著最小的切削力誤差敏感方向。施工后,就在機(jī)床交付給客戶,精度驗證和性能必須始終執(zhí)行。描述現(xiàn)有的標(biāo)準(zhǔn)和程序,這是在本章的最后介紹了。
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