某數(shù)控車(chē)床斜床身動(dòng)態(tài)特性分析及結(jié)構(gòu)參數(shù)優(yōu)化
本文選題:斜床身 + 靜力分析; 參考:《蘭州理工大學(xué)》2017年碩士論文
【摘要】:金屬切削機(jī)床被人們認(rèn)為是機(jī)械制造的工作母機(jī),它是機(jī)械制造業(yè)中最基本的設(shè)備,是國(guó)民經(jīng)濟(jì)發(fā)展中的基礎(chǔ)行業(yè)。在機(jī)床的各部件中,其中機(jī)床的主軸箱、床鞍、尾座都是安裝在機(jī)床的床身上。機(jī)床床身的特性取決與機(jī)床結(jié)構(gòu)的布局、結(jié)構(gòu)參數(shù)、床身中筋板的形式、斜床身傾斜的角度等,在進(jìn)行機(jī)床的切削加工過(guò)程中,床身在載荷的作用下會(huì)發(fā)生位移變形和振動(dòng),這些變化主要是由于床身設(shè)計(jì)時(shí)結(jié)構(gòu)不合理、以及剛度不足所引起的。本課題對(duì)某數(shù)控車(chē)床斜床身進(jìn)行動(dòng)態(tài)特性分析及結(jié)構(gòu)參數(shù)優(yōu)化,研究的主要內(nèi)容為:(1)建立斜床身結(jié)構(gòu)的有限元模型對(duì)床身進(jìn)行有限元分析的第一步就是建立床身的有限元模型。將三維建模軟件Solidworks中建立的床身結(jié)構(gòu)模型,利用ANSYS中的接口功能,將其導(dǎo)入到ANSYS中,從而建立起床身的有限元模型。(2)斜床身受力分析及有限元分析對(duì)斜床身進(jìn)行受力分析是施加載荷、約束以及進(jìn)行有限元分析計(jì)算的前提,確定與車(chē)床床身相接觸的各個(gè)構(gòu)件對(duì)床身的受力大小,建立床身受力模型,利用ANSYS軟件對(duì)斜床身施加載荷、約束并進(jìn)行求解,得出床身的最大變形量和最大變形位置。對(duì)車(chē)床斜床身進(jìn)行模態(tài)分析,得出床身的固有頻率及相應(yīng)的振型。(3)斜床身結(jié)構(gòu)改進(jìn)優(yōu)化通過(guò)改變斜床身傾斜的角度對(duì)床身結(jié)構(gòu)的固有頻率進(jìn)行靈敏度分析,找出對(duì)床身固有頻率影響較大的部件,對(duì)床身進(jìn)行結(jié)構(gòu)改進(jìn)優(yōu)化。
[Abstract]:Metal cutting machine is considered to be the working machine of machinery manufacturing. It is the most basic equipment in the machinery manufacturing industry and the basic industry in the development of national economy. Among the components of machine tool, the spindle box, bed saddle and rear seat are installed on the bed of machine tool. The characteristics of the machine bed depend on the layout of the machine structure, structural parameters, the form of the stiffened plate in the bed, the inclined angle of the inclined bed, and so on. During the cutting process of the machine tool, the displacement, deformation and vibration of the bed will occur under the action of the load. These changes are mainly caused by unreasonable structure and insufficient stiffness in the design of the bed. In this paper, the dynamic characteristic analysis and structural parameter optimization of the oblique bed of a numerical control lathe are carried out. The main content of the research is: 1) the first step of establishing the finite element model of the oblique bed structure is to establish the finite element model of the bed. The bed structure model established in the 3D modeling software Solidworks is imported into ANSYS by using the interface function of ANSYS. Thus, the finite element model of the bed is established. (2) the stress analysis and the finite element analysis of the oblique bed are the prerequisite for the application of the load, the constraint and the finite element analysis. The forces on the bed of each component in contact with the lathe bed are determined, and the model of the stress on the bed is established. The maximum deformation and the maximum deformation position of the bed are obtained by applying the load, constraint and solution to the oblique bed by using ANSYS software. Through modal analysis of lathe inclined bed, it is concluded that the natural frequency and corresponding mode of bed are improved and optimized. By changing the angle of inclined bed, the sensitivity of natural frequency of bed structure is analyzed. Find out the parts which have great influence on the natural frequency of the bed, and optimize the structure of the bed.
【學(xué)位授予單位】:蘭州理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類(lèi)號(hào)】:TG659
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 何成浩;尹志宏;;基于有限元分析的機(jī)床床身結(jié)構(gòu)優(yōu)化設(shè)計(jì)[J];科學(xué)技術(shù)與工程;2012年23期
2 吳良寶;張年松;張立;;CK1440型數(shù)控車(chē)床床身動(dòng)態(tài)特性分析[J];機(jī)械制造與自動(dòng)化;2011年06期
3 陳葉林;丁曉紅;郭春星;郭媛美;;機(jī)床床身結(jié)構(gòu)優(yōu)化設(shè)計(jì)方法[J];機(jī)械設(shè)計(jì);2010年08期
4 劉強(qiáng);李冬茹;;國(guó)產(chǎn)數(shù)控機(jī)床及其關(guān)鍵技術(shù)發(fā)展現(xiàn)狀及展望[J];航空制造技術(shù);2010年10期
5 應(yīng)鴻烈;;基于ANSYS的平面磨床床身結(jié)構(gòu)的有限元分析[J];機(jī)械工程與自動(dòng)化;2010年02期
6 楊峰;尹志宏;屈濤;;基于有限元的一體斜床身熱應(yīng)力分析[J];組合機(jī)床與自動(dòng)化加工技術(shù);2010年02期
7 張會(huì)端;譚慶昌;裴永臣;;機(jī)床工作臺(tái)的動(dòng)力學(xué)分析[J];機(jī)床與液壓;2008年09期
8 楊明亞;楊濤;湯本金;周永良;陰紅;;ANSYS在數(shù)控機(jī)床模態(tài)分析中的應(yīng)用[J];中國(guó)制造業(yè)信息化;2006年17期
9 張海偉;閻勤勞;劉明光;李隴梅;;數(shù)控機(jī)床動(dòng)態(tài)性能的分析及其結(jié)構(gòu)優(yōu)化[J];制造技術(shù)與機(jī)床;2006年05期
10 張學(xué)玲;常林楓;唐毅;徐燕申;林漢元;;基于結(jié)構(gòu)靜動(dòng)態(tài)設(shè)計(jì)方法的數(shù)控機(jī)床滑座結(jié)構(gòu)改進(jìn)[J];組合機(jī)床與自動(dòng)化加工技術(shù);2006年01期
相關(guān)碩士學(xué)位論文 前4條
1 王海云;臥式車(chē)床支承件結(jié)構(gòu)構(gòu)型與參數(shù)研究[D];大連理工大學(xué);2013年
2 楊永亮;基于有限元的車(chē)床床身結(jié)構(gòu)優(yōu)化[D];大連理工大學(xué);2006年
3 李修平;基于ANSYS的高速加工中心有限元分析[D];華中科技大學(xué);2005年
4 陳慶堂;基于ANSYS的XK713數(shù)控銑床有限元分析及優(yōu)化設(shè)計(jì)[D];東南大學(xué);2005年
,本文編號(hào):1941895
本文鏈接:http://sikaile.net/kejilunwen/jiagonggongyi/1941895.html