本文關(guān)鍵詞：基于ANSYS的機(jī)床整機(jī)結(jié)構(gòu)有限元分析　出處：《沈陽(yáng)工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 數(shù)控機(jī)床 整機(jī)有限元分析 空間誤差

【摘要】：隨著現(xiàn)代制造業(yè)的快速發(fā)展,高精度數(shù)控機(jī)床正向高速度、高效率、高精度的方向發(fā)展。而高精度數(shù)控機(jī)床整機(jī)結(jié)構(gòu)的剛度變形會(huì)直接影響機(jī)床的加工精度和穩(wěn)定性,因此機(jī)床整機(jī)結(jié)構(gòu)的設(shè)計(jì)成為數(shù)控機(jī)床制造領(lǐng)域研究的重點(diǎn)。為此,本文以提高數(shù)控機(jī)床的加工精度為標(biāo)準(zhǔn),研究機(jī)床整機(jī)有限元分析技術(shù),利用此技術(shù)查看機(jī)床刀盤上指定點(diǎn)P在整個(gè)加工空間的剛度位移,找出該點(diǎn)在機(jī)床自重下、工作載荷下、熱分析下以及熱-結(jié)構(gòu)耦合下的變形規(guī)律,為機(jī)床的誤差補(bǔ)償系統(tǒng)建立空間誤差模型,從而達(dá)到提高該機(jī)床加工精度的目的。本文以大型6軸5聯(lián)動(dòng)加工機(jī)床的整機(jī)為研究對(duì)象,介紹一種機(jī)床整機(jī)的有限元分析方法,首先,采用該方法對(duì)機(jī)床整機(jī)進(jìn)行靜態(tài)、動(dòng)態(tài)和熱態(tài)的特性分析,了解機(jī)床整機(jī)在靜態(tài)、動(dòng)態(tài)和熱態(tài)的結(jié)構(gòu)特性。其次,利用空間分層取樣法對(duì)機(jī)床的整個(gè)加工空間選取部分空間位置樣點(diǎn)。再次,利用整機(jī)有限元分析方法對(duì)這些空間位置點(diǎn)進(jìn)行有限元分析,收集機(jī)床刀盤上指定點(diǎn)P在機(jī)床自重下、工作載荷下、熱分析下以及熱-結(jié)構(gòu)耦合下的剛度變形數(shù)據(jù)。最后,通過(guò)機(jī)床刀盤指定點(diǎn)P的變形數(shù)據(jù)生成曲線圖,找到其在不同空間位置點(diǎn)的變形規(guī)律,進(jìn)而評(píng)估出機(jī)床的空間誤差,為今后該機(jī)床建立空間誤差模型提供基礎(chǔ)。
[Abstract]:With the rapid development of modern manufacturing, high precision CNC machine tools with high speed, high efficiency, high precision and rigidity deformation direction. High precision NC machine tool structure will directly affect the machining precision and stability, so the design of machine tool structure into a key field of manufacturing for CNC machine tools. Therefore, this paper in order to improve the machining precision of NC machine tool as the standard, the research of finite element analysis technology of machine tool, machine tool cutter displacement stiffness check specified points on the P in the whole working space by using this technique, to find out the point in the machine weight, work load, thermal deformation analysis and thermal structure coupling, the establishment of the spatial error model for error compensation system of machine tool, so as to improve the machining accuracy of NC machine. In this paper the 6 large 5 axis machine as the research object, introduces a The finite element analysis method, the whole machine first, using the method of static analysis and dynamic characteristics of machine tool, thermal, understand the machine in the static, dynamic and thermal structure characteristics. Secondly, using stratified sampling method to machine the processing space selection part of the space position of the sample point. Again, for finite element analysis of these space points using the finite element analysis method, collecting machine tool cutter on specified point P in machine weight, work load, stiffness and deformation data of thermal analysis and thermal structure coupling. Finally, through the deformation data of specified point P CNC machine cutter generated curve find the deformation law in different space position, and then evaluate the spatial error of machine tools, machine tools for the future of the establishment of spatial error provides the basic model.

【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG659

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本文編號(hào)：1428617