本文選題：鏜軸 + Workbench　； 參考：《昆明理工大學(xué)》2015年碩士論文

【摘要】：隨著中國制造業(yè)的迅速發(fā)展,以數(shù)控機床為代表的數(shù)控設(shè)備應(yīng)用越來越廣,對機床的加工性能要求也越來越高。本課題來源于昆明機床廠,應(yīng)客戶要求對于大型臥式數(shù)控鏜銑床鏜軸變形撓度進行研究,經(jīng)反饋該類機床在深孔鏜削加工時,隨著鏜軸的不斷伸長,產(chǎn)生的撓度使的加工質(zhì)量和加工效率降低。而生產(chǎn)廠家在產(chǎn)品研發(fā)時又沒有給出相應(yīng)的的技術(shù)指標(biāo),即鏜軸伸長量與其撓度關(guān)系。此外用戶還要求有針對性的采取措施以降低鏜軸撓度�；谝陨蠁栴},本文選取了較為典型的大型數(shù)控TKS6111臥式鏜銑床為研究對象,對鏜軸伸長量與其撓度之間的關(guān)系及撓度進行了分析研究。主要研究內(nèi)容有以下幾個方面：(1)結(jié)合前期調(diào)研和實際情況,對鏜銑床鏜軸系統(tǒng)變形撓度的分析方法及其精度進行分析研究,確定采用鏜軸系統(tǒng)有限元模型進行撓度分析和支承軸承跨度優(yōu)化兩種方案。(2)考慮到結(jié)合部對撓度的影響,將支承軸承利用虛擬材料來模擬替代,對部分結(jié)合面添加相應(yīng)接觸剛度和阻尼,建立簡化鏜軸系統(tǒng)CAD模型。再利用ANSYS Workbench有限元化。最后通過模態(tài)試驗校正有限元模型。(3)基于校正后的鏜軸系統(tǒng)有限元模型,在Workbench中對其邊界約束和載荷施加,以精鏜為加工背景,分析不同伸長量下鏜軸端部圓心的變形撓度。提取分析數(shù)據(jù)繪制鏜軸伸長量與其撓度之間的關(guān)系曲面,并選取不同工況下的撓度曲線作進一步討論。(4)對有限元模型利用Workbench進行參數(shù)化,依據(jù)實際工況的可行性和易操作性,對鏜軸撓度的影響因素,即設(shè)計變量進行分析確定。最終確定軸承支承跨度作為設(shè)計變量,鏜軸端部撓度作為優(yōu)化目標(biāo),對鏜軸系統(tǒng)進行優(yōu)化,以降低鏜軸的撓度,以達到優(yōu)化目的。本文針對客戶要求,對鏜軸伸長量與其撓度之間的關(guān)系及其支承軸承跨度優(yōu)化進行了分析研究,得出一些較為科學(xué)的數(shù)據(jù),為老產(chǎn)品的改進和新產(chǎn)品的開發(fā)提供一種科學(xué)的設(shè)計方法和數(shù)據(jù)參考。
[Abstract]:With the rapid development of China's manufacturing industry, numerical control equipment represented by numerical control machine tools is more and more widely used, and the machining performance of machine tools is becoming more and more demanding. This subject comes from Kunming Machine tool Factory. According to customer's request, the deflection of boring shaft of large horizontal NC boring and milling machine is studied. The resulting deflection reduces the processing quality and efficiency. However, the manufacturer did not give the corresponding technical index, that is, the relationship between the boring shaft elongation and the deflection of the boring shaft. In addition, users also require targeted measures to reduce boring axis deflection. Based on the above problems, this paper selects the typical NC TKS6111 horizontal boring and milling machine as the research object, and analyzes the relationship between the boring axis elongation and its deflection and the deflection. The main research contents are as follows: (1) combined with previous investigation and practice, the analysis method and precision of deflection of boring shaft system of boring and milling machine are analyzed and studied. The finite element model of boring shaft system is adopted for deflection analysis and support bearing span optimization. Considering the influence of joint part on deflection, the bearing is simulated and replaced by virtual material. The corresponding contact stiffness and damping are added to some joints, and the simplified CAD model of boring shaft system is established. Then the finite element method of ANSYS Workbench is used. Finally, based on the corrected finite element model of the boring shaft system, the boundary constraints and loads are applied in Workbench, and the deformation deflection of the center of the end of the boring shaft is analyzed with the fine boring as the machining background. Extracting and analyzing data to draw the relation surface between the elongation of boring shaft and its deflection, and selecting deflection curve under different working conditions for further discussion. (4) parameterizing finite element model using Workbench, according to the feasibility and easy operation of actual working condition, the finite element model is parameterized. The influence factors of deflection of boring axis, namely design variable, are analyzed and determined. Finally, the bearing support span is determined as the design variable and the boring shaft end deflection is chosen as the optimization objective. The boring shaft system is optimized in order to reduce the deflection of the boring shaft and achieve the purpose of optimization. In this paper, the relationship between the elongation of boring shaft and its deflection and the optimization of bearing span are analyzed and studied, and some scientific data are obtained. It provides a scientific design method and data reference for the improvement of old products and the development of new products.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TG536

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