本文關(guān)鍵詞：高速精密紡織機(jī)械專用軸承的研究　出處：《浙江大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高速 紡機(jī)軸承 角接觸

【摘要】：隨著紡紗機(jī)械不斷向輕型化、多功能和高速化以及高可靠性方向發(fā)展,對(duì)其配套軸承的結(jié)構(gòu)、性能與可靠性都提出了更高的要求。由于精密角接觸球軸承具有高速、高剛度和長(zhǎng)壽命等特點(diǎn),在高速精密紡織機(jī)械中得以成功應(yīng)用,但由于這類軸承的設(shè)計(jì)、制造的技術(shù)難度大,目前主要依賴進(jìn)口。為此,本文以高速精密角接觸球軸承為研究對(duì)象,結(jié)合企業(yè)的實(shí)際需求,展開其結(jié)構(gòu)設(shè)計(jì)與優(yōu)化、工藝分析與改進(jìn)以及試驗(yàn)等研究工作,為實(shí)現(xiàn)其國(guó)產(chǎn)化提供技術(shù)支持。 1)首先介紹了本論文的研究的主要內(nèi)容及選擇的背景,國(guó)內(nèi)高速精密紡織機(jī)械專用軸承的研究和開發(fā)起步較晚,在軸承的設(shè)計(jì)技術(shù)、加工工藝、密封結(jié)構(gòu)、潤(rùn)滑性能以及專用檢測(cè)技術(shù)和試驗(yàn)技術(shù)等方面還在探索階段,目前只是停留在經(jīng)驗(yàn)設(shè)計(jì)和類比設(shè)計(jì)階段,研制開發(fā)過(guò)程中的關(guān)鍵技術(shù)缺乏必要的理論支撐和試驗(yàn)依據(jù)。而隨著我國(guó)工業(yè)現(xiàn)代化的發(fā)展,對(duì)零部件的要求也越來(lái)越高,同時(shí)也應(yīng)享有自主的知識(shí)產(chǎn)權(quán),開發(fā)和制造高可靠性、高精度的紡織機(jī)械專用軸承。 2)通過(guò)對(duì)高速精密紡織機(jī)械專用軸承內(nèi)部結(jié)構(gòu)及性能特點(diǎn)進(jìn)行分析,闡述了軸承優(yōu)化設(shè)計(jì)的一般步驟,并重點(diǎn)分析了軸承內(nèi)部保持架的運(yùn)動(dòng)及對(duì)軸承性能的影響。并在現(xiàn)有的軸承設(shè)計(jì)中通過(guò)優(yōu)化設(shè)計(jì)軸承保持架來(lái)進(jìn)一步提高軸承性能,滿足客戶的使用需求。通過(guò)在原有軸承設(shè)計(jì)上,優(yōu)化軸承內(nèi)部保持架的結(jié)構(gòu),根據(jù)軸承內(nèi)部保持架的運(yùn)動(dòng)特點(diǎn)增加保持架的引導(dǎo)槽、引導(dǎo)角來(lái)降低軸承內(nèi)部的摩擦力矩。從而進(jìn)一步提高軸承壽命。 3)分析高速精密紡織機(jī)械專用軸承的靜動(dòng)態(tài)分析,采用有限元的分析方法,利用計(jì)算機(jī)軟件計(jì)算軸承內(nèi)部承載情況,通過(guò)模擬分析各個(gè)不同加載情況來(lái)比較軸承內(nèi)部不同受力情況,為進(jìn)一步優(yōu)化設(shè)計(jì)提供理論數(shù)據(jù)支持,在給定不同載荷、轉(zhuǎn)速及溫升等條件下(5種邊界條件),對(duì)軸承的靜動(dòng)態(tài)性能進(jìn)行分析,并得出不同條件下軸承內(nèi)部承載情況,其中熱載荷對(duì)軸承的影響較大,所以在設(shè)計(jì)中應(yīng)重點(diǎn)考慮怎樣充分的潤(rùn)滑,改進(jìn)產(chǎn)品結(jié)構(gòu)降低軸承內(nèi)部的摩擦,使軸承旋轉(zhuǎn)中能充分降低軸承溫升,并驗(yàn)證本文提出的保持架優(yōu)化結(jié)構(gòu)設(shè)計(jì)。 4)重點(diǎn)分析高速精密紡織機(jī)械專用軸承制造加工過(guò)程中的工藝,高速精密紡織機(jī)械專用軸承不但要有好的設(shè)計(jì)方法,好的設(shè)計(jì)理念,更重要的是要能夠?qū)嵤?能夠加工出來(lái)滿足設(shè)計(jì)要求的產(chǎn)品,因此對(duì)熱處理的工藝控制、硬車削工藝、超精工藝、表面強(qiáng)化處理工藝的重點(diǎn)分析,并為滿足產(chǎn)品的質(zhì)量要求,進(jìn)行工藝上的改進(jìn)及工藝參數(shù)的優(yōu)化。首先熱處理并采用真空淬火、增加冷處理的工藝,減低殘余奧氏體含量、消除軸承內(nèi)部殘余應(yīng)力,提高軸承使用壽命；其次在硬車削工序進(jìn)行試驗(yàn)設(shè)計(jì)DOE的參數(shù)選擇,來(lái)選取最優(yōu)參數(shù)組合,合理的設(shè)計(jì)工藝留量,來(lái)保證軸承外徑環(huán)槽尺寸精度,使軸承運(yùn)轉(zhuǎn)過(guò)程中更穩(wěn)定；之后對(duì)超精工藝分析及改進(jìn),為提高軸承的使用壽命,通過(guò)超精工裝的改進(jìn)減小溝道的溝型誤差,使其溝型誤差減少50%,保證批次的一致性,這對(duì)保證整批軸承的壽命的一致性大有好處；同時(shí)通過(guò)溝道表面硬化處理,使溝道表面得到壓應(yīng)力來(lái)提高使用壽命；合理的配置了工藝參數(shù),針對(duì)存在的問(wèn)題進(jìn)行改進(jìn),從加工工藝方面提高軸承的使用壽命。 5)對(duì)高速精密紡織機(jī)械專用軸承進(jìn)行性能試驗(yàn),來(lái)驗(yàn)證設(shè)計(jì)及制造的軸承是否滿足客戶的需求,同時(shí)也給進(jìn)一步優(yōu)化提供數(shù)據(jù),使之不斷提升。通過(guò)對(duì)8組樣品的一年多時(shí)間持續(xù)監(jiān)控來(lái)確定軸承的使用壽命,BN35-8V/P2及軸承的速度參數(shù)dm*n值已達(dá)到48*25000:1.2X106mm*r/min,溫升最高15℃.最小壽命8592h,完全滿足客戶的7200h要求,達(dá)到了預(yù)期的目的。說(shuō)明此產(chǎn)品是成功的,從結(jié)構(gòu)改進(jìn),制造加工技術(shù)都是比較先進(jìn)的。 6)總結(jié)全文并對(duì)高速精密紡織機(jī)械專用軸承的發(fā)展提出了期望,同時(shí)也指出了目前國(guó)內(nèi)在高速精密紡機(jī)專用軸承的產(chǎn)品發(fā)展現(xiàn)狀。 在高速精密角接觸球軸承的設(shè)計(jì)中,采用擬靜力學(xué)設(shè)計(jì)理論,同時(shí)引入“外圈溝道控制假說(shuō)”,建立函數(shù)和數(shù)學(xué)模型,對(duì)軸承主要參數(shù)進(jìn)行優(yōu)化設(shè)計(jì),提出了高速精密紡機(jī)角接觸球軸承的設(shè)計(jì)方法；同時(shí)還通過(guò)試驗(yàn)、試制得出了一整套完備的加工工藝,使得在目前工藝裝備情況下達(dá)到設(shè)計(jì)要求。試驗(yàn)表明,研制的BN35-8V/P2軸承的主要性能指標(biāo)達(dá)到了甚至超過(guò)了國(guó)際著名的軸承公司的同類產(chǎn)品的先進(jìn)水平,從而驗(yàn)證了設(shè)計(jì)優(yōu)化方法及工藝方法的先進(jìn)性及實(shí)用性。高速精密紡織機(jī)械專用軸承在國(guó)內(nèi)主要依賴進(jìn)口,本論文所取得的技術(shù)成果對(duì)提高我國(guó)軸承產(chǎn)品設(shè)計(jì)與制造水平具有重要意義。
[Abstract]:With the continuous spinning machine to light, multifunction and high speed and high reliability direction, supporting structure on the bearing performance and reliability, higher requirements are put forward. The precision angular contact ball bearings with high speed, and long life characteristics of Gao Gang, has been successfully used in high speed precision textile machinery but, because of the design of this type of bearing, the technical difficulty of manufacturing, mainly rely on imports. Therefore, in this paper, a high speed angular contact ball bearing as the research object, combined with the actual needs of enterprises, the structure design and optimization, work process analysis and improvement and test, provide technical support for the realization of the localization.
1) first introduced the main content and the choice of the research background of the research and development of domestic start high speed precision textile machinery special bearings in the late bearing design technology, machining process, sealing structure, lubrication performance and special exploration in aspects of detection technology and testing technology, currently only stay in experience design and analogy design stage, key technology research and development process of the lack of theoretical support and experimental basis necessary. And with the development of China's industrial modernization, the parts are increasingly high requirements, but also should have the independent intellectual property rights, development and manufacture of high reliability, special textile machinery bearings with high precision.
2) based on the high speed precision textile machinery special bearing internal structure and performance characteristic analysis, elaborated the general steps of optimization design of the bearing, and analyzes the bearing cage movement and the influence on the bearing performance and the bearing design. In the current through the optimization design of bearing cage to further improve bearing performance, meet the use of customer demand. The original bearing design, optimization of bearing cage structure, according to the motion characteristics of the bearing is maintained inside the frame increased to maintain guide groove frame, guide angle to reduce the friction torque of bearings in the Department. In order to further improve the bearing life.
3) the analysis of static and dynamic analysis of high speed precision textile machinery special bearings, using the finite element analysis method, calculation of bearing load by using the computer software, through the simulation analysis of different loading conditions to compare the different internal bearing force, to provide theoretical data support for further optimization design, given the different load, speed and temperature l condition (5 boundary conditions), analysis on static and dynamic performance of the bearing, and the bearing internal bearing under different conditions, the influence of thermal load on the bearing, so the design should focus on how to fully improve the lubrication, reducing internal friction bearing product structure, so that the bearing can be fully to reduce the temperature of bearings in the rotating frame, and verify the optimized structure design and maintain in this paper.
4) analysis technology of high speed precision textile machinery special bearing manufacturing process on high speed precision textile machinery special bearing not only have a good design, good design, more important is to be able to implement, can be processed to meet the design requirements of products, so the control of heat treatment process, hard turning process, ultra precision technology, analysis of the key process of surface strengthening, and to meet the requirements of the product quality, optimize the process parameters and improve the process. The first heat treatment and vacuum quenching process, increase the cold treatment, reduce the content of residual austenite, eliminate bearing internal residual stress, improve the service life of the bearing selection; secondly, parameter design of experiment of DOE in hard turning process, to select the optimal parameters of the design process and reasonable allowance, to ensure the bearing outer ring groove size precision, the shaft carrier More stable in the process of ultra precision process; after analysis and improvement, in order to improve the service life of the bearing groove error by improving the ultra loaded Seiko decrease the channel, the channel error is reduced by 50%, to ensure consistency of the batch, the batch to ensure the consistency of bearing life is good at the same time; through the channel surface hardening, the compressive stress to improve the service life of the channel surface; reasonable configuration parameters, aiming at the existing problem of improvement, improve the service life of the bearing from the processing technology.
5) performance test of high speed precision textile machinery special bearings, to verify whether the bearing design and manufacture to meet customer demand, but also to further optimize the data, make continuous improvement. Based on 8 samples of more than a year of continuous monitoring to determine the service life of the bearing, speed and bearing parameters of dm*n BN35-8V/P2 the value has reached 48*25000:1.2X106mm*r/min, the highest temperature of 15 degrees Celsius. The minimum life of 8592h, fully meet customer 7200h requirements, achieve the expected purpose. This product is successful, the improvement of structure, manufacturing and processing technology is more advanced.
6) summarize the full text and put forward expectations for the development of special bearings for high-speed and precision textile machinery. At the same time, we also point out the current development of special bearings for high-speed precision spinning machines in China.
Design of ball bearing in high speed and high precision angle, using the quasi-static design theory, introducing the "outer raceway control hypothesis, set up function and mathematical model to optimize the design parameters of the main bearing, put forward the design of a high speed precision machinery angular contact ball bearing method; also through test, trial machining are obtained. A comprehensive set of technology, which meets the design requirements in the current process of equipment in the case. The results show that the main performance index of BN35-8V/P2 bearing developed has reached even more than the advanced level of international famous bearing companies of similar products, which verified the advanced and practical design methods and process optimization method. High precision textile mechanical special bearings in domestic is mainly dependent on imports, the technology has improved the level of China's bearing products design and manufacturing to Italy Righteousness.

【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TH133.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 方希錚;高速精密軸承的一種設(shè)計(jì)方法[J];軸承;1984年04期

2 徐榮瑜;角接觸球軸承摩擦力矩的計(jì)算[J];軸承;1994年06期

3 馮森林,吳長(zhǎng)春,羅繼偉;軸承-主軸系統(tǒng)靜態(tài)力學(xué)性能分析[J];軸承;1998年08期

4 蔣興奇,馬家駒;高速精密角接觸球軸承結(jié)構(gòu)及性能[J];軸承;2000年03期

5 李松生,裴翠紅,王永堅(jiān);高速精密角接觸球軸承支承特性分析[J];軸承;2001年02期

6 杜迎輝 ,邱明 ,蔣興奇 ,馬家駒;高速精密角接觸球軸承剛度計(jì)算[J];軸承;2001年11期

7 姜韶峰,司東宏,李鵬;高速密封角接觸球軸承的研究[J];軸承;2004年02期

8 徐志棟;楊伯原;魏平;李建華;;滾動(dòng)軸承點(diǎn)接觸彈流油膜厚度及摩擦力矩的分析計(jì)算[J];軸承;2008年04期

9 姜維;楊咸啟;常宗瑜;;高速角接觸球軸承動(dòng)力學(xué)特性參數(shù)分析[J];軸承;2008年06期

10 趙春江;孫永春;王建梅;;高速角接觸球軸承接觸角的求解分析[J];軸承;2008年10期

相關(guān)博士學(xué)位論文 前2條

1 劉秀海;高速滾動(dòng)軸承動(dòng)力學(xué)分析模型與保持架動(dòng)態(tài)性能研究[D];大連理工大學(xué);2011年

2 蔣興奇;主軸軸承熱特性及對(duì)速度和動(dòng)力學(xué)性能影響的研究[D];浙江大學(xué);2001年

相關(guān)碩士學(xué)位論文 前3條

1 張麗;高速軸承—主軸系統(tǒng)靜動(dòng)態(tài)性能分析及其CAD研究[D];合肥工業(yè)大學(xué);2004年

2 陳雄;角接觸球軸承靜力學(xué)與動(dòng)力學(xué)分析[D];南京航空航天大學(xué);2007年

3 張家?guī)?高速角接觸球軸承靜動(dòng)態(tài)參數(shù)性能分析[D];合肥工業(yè)大學(xué);2008年

，

本文編號(hào)：1372680