本文關(guān)鍵詞：新型高速滾子鏈鏈輪齒形研究　出處：《山東大學(xué)》2011年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 滾子鏈 鏈輪 短幅外擺線 多體動(dòng)力學(xué)

【摘要】：滾子鏈?zhǔn)且环N重要的機(jī)械基礎(chǔ)件,廣泛應(yīng)用于汽車(chē)發(fā)動(dòng)機(jī)、石油化工、自動(dòng)流水線等機(jī)械上,特別是在重載、大中心距工況下,已成為眾多行業(yè)首選的傳動(dòng)形式之一。然而,隨著傳動(dòng)速度的不斷提高,傳統(tǒng)的滾子鏈鏈輪齒形難以適應(yīng)于高速、低噪聲等條件下的傳動(dòng),由于缺乏必要的理論支持和技術(shù)支撐,目前國(guó)內(nèi)對(duì)各種新型鏈輪齒形的研究尚處于起步階段,一直依賴國(guó)外高價(jià)進(jìn)口鏈。因此,急需研究新型鏈輪來(lái)提高滾子鏈機(jī)構(gòu)的傳動(dòng)性能。 首先,本文分析了鏈傳動(dòng)的多邊形效應(yīng)和嚙合沖擊的形成機(jī)理。以降低鏈條的波動(dòng)量,減小鏈傳動(dòng)機(jī)構(gòu)在高速運(yùn)轉(zhuǎn)時(shí)鏈條與鏈輪的嚙合沖擊,提高鏈傳動(dòng)的平穩(wěn)性為目標(biāo),開(kāi)展了新型齒廓鏈輪的設(shè)計(jì)研究。由于短幅外擺線無(wú)奇異點(diǎn)、與基圓并無(wú)交點(diǎn)且過(guò)渡光滑,因此選用短幅外擺線作為新型鏈輪的齒形。 其次,根據(jù)短幅外擺線的形成機(jī)理,推導(dǎo)出短幅外擺線的方程,并利用參數(shù)方程求等距曲線的方法,得到了短幅外擺線鏈輪齒廓方程。通過(guò)三維建模技術(shù),建立了短幅外擺線鏈輪、漸開(kāi)線鏈輪、外擺線鏈輪以及兩種標(biāo)準(zhǔn)鏈輪(DIN8196和GB1244-85)的三維模型,并利用MATLAB計(jì)算出各鏈輪齒形的數(shù)據(jù)。 最后,利用多體動(dòng)力學(xué)仿真軟件,根據(jù)實(shí)際工況條件,建立了正時(shí)鏈傳動(dòng)機(jī)構(gòu)多體動(dòng)力學(xué)模型,進(jìn)行動(dòng)態(tài)仿真實(shí)驗(yàn),并將結(jié)果進(jìn)行對(duì)比分析。將MATLAB計(jì)算的各齒型數(shù)據(jù)(漸開(kāi)線齒形、短幅外擺線齒形、外擺線齒形和標(biāo)準(zhǔn)齒形)輸入到模型中,在1000-8000r/min不同轉(zhuǎn)速下對(duì)幾種齒形進(jìn)行仿真實(shí)驗(yàn)。對(duì)比分析了漸開(kāi)線鏈輪、短幅外擺線鏈輪、外擺線鏈輪和標(biāo)準(zhǔn)鏈輪在不同轉(zhuǎn)速下的鏈條波動(dòng)量、鏈條與傳動(dòng)部件間摩擦力、鏈條張力、鏈輪與滾子的嚙合沖擊以及從動(dòng)輪的轉(zhuǎn)速不均勻系數(shù)等。仿真結(jié)果表明,相對(duì)于漸開(kāi)線鏈輪和外擺線鏈輪,短幅外擺線鏈輪能夠降低鏈輪角速度波動(dòng)、鏈條張力峰值以及鏈條與傳動(dòng)部件之間的摩擦力峰值；相對(duì)于標(biāo)準(zhǔn)鏈輪,短幅外擺線鏈輪在各種轉(zhuǎn)速下都擁有較為優(yōu)越的性能,能夠有效提高鏈傳動(dòng)的平穩(wěn)性和動(dòng)態(tài)性能。
[Abstract]:Roller chain is an important mechanical base, which is widely used in automobile engine, petrochemical, automatic assembly line and other machinery, especially in heavy load, large center distance working conditions. It has become one of the preferred transmission forms in many industries. However, with the continuous improvement of transmission speed, the traditional roller chain sprocket tooth profile is difficult to adapt to high-speed, low-noise and other conditions of transmission. Due to the lack of necessary theoretical and technical support, the domestic research on various new sprocket tooth profile is still in its infancy and has been dependent on foreign high-priced import chain. It is urgent to study new type sprocket to improve the transmission performance of roller chain mechanism. Firstly, the polygon effect of chain transmission and the formation mechanism of meshing impact are analyzed in order to reduce the fluctuation of chain and reduce the meshing impact between chain and sprocket when the chain is running at high speed. In order to improve the stability of the chain drive, the design of the new gear profile sprocket is carried out. Because there is no singularity of the cycloid with short amplitude, there is no intersection point with the base circle and the transition is smooth. Therefore, a short epicycloid is chosen as the gear profile of a new type of sprocket. Secondly, according to the formation mechanism of short-amplitude epicycloid, the equation of short-amplitude epicycloid is deduced, and the tooth profile equation of short-amplitude epicycloid sprocket is obtained by using parameter equation. The 3D models of short epicycloid sprocket involute sprocket epicycloid sprocket and two standard sprockets named DIN8196 and GB1244-85are established. The tooth profile of each sprocket is calculated by MATLAB. Finally, using the multi-body dynamics simulation software, according to the actual working conditions, the multi-body dynamics model of timing chain drive mechanism is established, and the dynamic simulation experiment is carried out. The data of tooth profile (involute tooth profile, short amplitude epicycloid tooth profile, epicycloid tooth profile and standard tooth profile) calculated by MATLAB are input into the model. Several tooth shapes were simulated at different rotational speeds of 1000-8000rpm. The involute sprocket and short epicycloid sprocket were compared and analyzed. Chain fluctuation, friction between chain and transmission parts, chain tension at different speeds of cycloid sprocket and standard sprocket. The simulation results show that compared with involute sprocket and epicycloid sprocket, short epicycloid sprocket can reduce the angular velocity fluctuation of sprocket. The peak of chain tension and the peak of friction between chain and transmission parts; Compared with the standard sprocket, the short-amplitude epicycloid sprocket has superior performance at various rotational speeds, which can effectively improve the stability and dynamic performance of the chain drive.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類(lèi)號(hào)】：TH132.45

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 尚文;用包絡(luò)法求等距曲線的方程[J];淮南礦業(yè)學(xué)院學(xué)報(bào);1996年01期

2 孟繁忠,翁建良;高速滾子鏈的多沖性能[J];金屬熱處理;2000年05期

3 姚繼權(quán),張世軒,李曉豁;基于Pro/ENGINEER鏈傳動(dòng)運(yùn)動(dòng)仿真[J];機(jī)械設(shè)計(jì)與制造;2005年11期

4 榮長(zhǎng)發(fā);鏈傳動(dòng)的振動(dòng)和噪聲研究現(xiàn)狀與發(fā)展[J];機(jī)械傳動(dòng);2004年02期

5 榮長(zhǎng)發(fā);張明路;;滾子鏈傳動(dòng)的振動(dòng)特性分析[J];機(jī)械傳動(dòng);2006年04期

6 吳曉,汪永琳,倪斌;滾子鏈傳動(dòng)振動(dòng)特性的研究[J];機(jī)械科學(xué)與技術(shù);1997年01期

7 榮長(zhǎng)發(fā),王嚴(yán)興,寧興江;滾子鏈傳動(dòng)嚙合沖擊載荷特性分析[J];礦山機(jī)械;2003年07期

8 孟繁忠,李欣欣,胡建東,張延伸;摩托車(chē)傳動(dòng)用滾子鏈磨損特性的研究[J];摩擦學(xué)學(xué)報(bào);1996年03期

9 王慧;譚艷新;;滾子鏈?zhǔn)问降姆治鯷J];煤礦機(jī)械;2007年12期

10 陳亞元,蓋雨聆,李欣欣,楊國(guó)欣;共軛嚙合鏈傳動(dòng)的分析[J];農(nóng)業(yè)機(jī)械學(xué)報(bào);1997年02期

相關(guān)碩士學(xué)位論文 前4條

1 張京正;復(fù)合齒廓齒形鏈鏈輪的嚙合機(jī)理及動(dòng)態(tài)分析[D];山東大學(xué);2007年

2 季德生;新型高速正時(shí)鏈鏈輪齒形的研究[D];山東大學(xué);2009年

3 申兆亮;基于ADAMS仿真新型滾子鏈鏈輪齒形的研究[D];山東大學(xué);2010年

4 馬勛;高速正時(shí)滾子鏈鏈輪齒形研究[D];山東大學(xué);2010年

，

本文編號(hào)：1432895