本文選題：鏜銑加工中心 + 綜合空間誤差模型　； 參考：《沈陽理工大學》2015年碩士論文

【摘要】：現代科技飛速發(fā)展的大環(huán)境下,機械加工制造技術也在不斷的提升。如何實現高精度精密加工,已經成為我國現今機械制造業(yè)的重中之重。本文參與國家“十二五”規(guī)劃的863項目,研究以復雜箱體類零件為加工對象的復合式鏜銑加工中心的誤差建模、誤差分析與誤差補償的部分。建立精密復合式鏜銑加工中心的空間誤差模型,對其誤差進行測量、分析和補償,并開發(fā)誤差分析系統(tǒng),以提高復合式鏜銑加工中心的加工精度,有效的改善了終端產品的質量。文主要針對以下四個方面的內容展開研究：(1)復合式鏜銑加工中心總體布局的結構研究與誤差分析考慮軍用復雜箱體類零件的結構與精度需求,結合新型數控機床的結構特點,分析影響加工精度的主要誤差來源,如導軌誤差,工作臺滑臺誤差,機床主軸回轉誤差,銑削橫梁彎曲誤差以及鏜削滑枕彎曲誤差等,引入綜合誤差的定義,為建立數學模型做基礎。(2)復合式鏜銑加工中心綜合空間誤差模型的建立通過多體系統(tǒng)的建模方法,建立專用復合式鏜銑加工中心的拓撲結構,以及低序體陣列,并定義每一個典型體的笛卡爾坐標系,建立特征矩陣方程,最終分別建立立式銑削空間誤差模型與臥式鏜銑空間誤差模型。(3)復合式鏜銑加工中心關鍵部件的典型誤差分析根據關鍵部件典型誤差的分析與研究,針對三類變化較穩(wěn)定的誤差(數控轉臺沿X軸運動誤差,銑削滑臺沿Y2軸運動誤差,鏜削滑臺沿Y3軸運動誤差)采用激光干涉儀測量,利用九線法進行數據運算得到數控機床的具體誤差值。(4)復合式鏜銑加工中心的誤差補償與綜合誤差分析界面的開發(fā)通過立式銑削Z2軸橫梁與臥式鏜削Z3軸滑枕的誤差分析,知其誤差值隨行程的改變而變化,單一的測量誤差并預先補償是無法提高加工精度的,因此采用有限元分析得出其誤差與行程之間的函數關系。根據其行程位置實時補償,并結合空間誤差模型,開發(fā)復合式鏜銑加工中心誤差分析界面。
[Abstract]:With the rapid development of modern science and technology, machining and manufacturing technology is constantly improving. How to achieve high-precision machining has become the most important part of China's machinery manufacturing industry. This paper takes part in the 863 project of the "12th Five-Year Plan", and studies the error modeling, error analysis and error compensation of the complex boring and milling machining center which takes the complicated box parts as the machining object. The spatial error model of precision compound boring and milling machining center is established, its error is measured, analyzed and compensated, and an error analysis system is developed to improve the machining accuracy of compound boring and milling machining center. Effectively improve the quality of the end product. This paper mainly focuses on the following four aspects: research on the structure and error analysis of the overall layout of the compound boring and milling machining center, considering the structure and precision requirements of the military complex box parts, and combining with the structural characteristics of the new NC machine tool, The main error sources affecting machining accuracy, such as guide rail error, table slide error, spindle rotation error of machine tool, bending error of milling beam and bending error of boring and sliding pillow, are analyzed, and the definition of comprehensive error is introduced. In order to establish the mathematical model, the synthetic spatial error model of the compound boring and milling machining center is established. The topological structure of the special compound boring and milling machining center and the low sequence body array are established by the modeling method of the multi-body system. The Cartesian coordinate system of each typical body is defined, and the eigenmatrix equation is established. Finally, the model of spatial error of vertical milling and the model of spatial error of horizontal boring and milling are established respectively. The typical error analysis of the key parts of the machining center of compound boring and milling is carried out according to the analysis and research of the typical errors of the key parts. Laser interferometer is used to measure three kinds of errors, which are the error of NC turntable moving along X axis, the error of milling slider moving along Y2 axis, and the error of boring slider moving along Y3 axis. The error compensation and Comprehensive error Analysis Interface of compound boring and Milling Machining Center is obtained by using nine-line method. The error analysis of vertical milling of Z2-axis beam and horizontal boring of Z3-axis sliding pillow is carried out. It is known that the error value varies with the stroke, and a single measurement error and pre-compensation can not improve the machining accuracy. Therefore, the finite element analysis is used to obtain the functional relationship between the error and the stroke. According to the real-time compensation of the travel position and the spatial error model, the error analysis interface of compound boring and milling machining center is developed.
【學位授予單位】：沈陽理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG659

【參考文獻】

相關期刊論文 前1條

1 劉春時;孫偉;李小彭;張義民;;面向五軸數控機床的空間誤差建模流程研究[J];機床與液壓;2009年08期

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本文編號：1890754