【摘要】：分度凸輪機(jī)構(gòu)是實(shí)現(xiàn)自動(dòng)化機(jī)械生產(chǎn)中所需的間歇運(yùn)動(dòng)的常用機(jī)構(gòu),其在食品、藥品、印刷等行業(yè)得到廣泛的應(yīng)用。為適應(yīng)自動(dòng)機(jī)械對(duì)高速化、大分度數(shù)分度運(yùn)動(dòng)的要求,本文提出了新型雙嚙合針齒凸輪分度機(jī)構(gòu)。該機(jī)構(gòu)可實(shí)現(xiàn)較大的分度數(shù)而且結(jié)構(gòu)緊湊具,有廣闊的應(yīng)用前景。 首先,本文對(duì)新型雙嚙合針齒凸輪分度機(jī)構(gòu)的傳動(dòng)原理進(jìn)行了闡述,定義了主要設(shè)計(jì)參數(shù),設(shè)計(jì)了機(jī)構(gòu)的結(jié)構(gòu)形式。并建立了凸輪、內(nèi)擺線輪廓線的方程,利用Matlab繪制了凸輪、內(nèi)擺線輪廓線。討論主要參數(shù)對(duì)凸輪廓線的影響。并在上述研究的基礎(chǔ)上,應(yīng)用三維設(shè)計(jì)軟件Pro/e,通過(guò)計(jì)算出的凸輪、內(nèi)擺線輪曲線坐標(biāo)點(diǎn),完成機(jī)構(gòu)主要部件的三維建模。同時(shí)應(yīng)用Pro/e Mechanism模塊對(duì)機(jī)構(gòu)進(jìn)行運(yùn)動(dòng)仿真與分析,驗(yàn)證其傳動(dòng)原理的可行性。 其次,對(duì)針齒與凸輪、內(nèi)擺線輪之間的受力進(jìn)行了分析。建立變形協(xié)調(diào)條件,對(duì)針齒在嚙合點(diǎn)處作用力的力臂進(jìn)行分析。結(jié)合凸輪與針齒的嚙合狀態(tài),利用Matlab計(jì)算了在任意時(shí)刻凸輪、內(nèi)擺線輪的壓力角和針齒嚙合點(diǎn)處的作用力大小。對(duì)一些參數(shù)對(duì)壓力角及機(jī)構(gòu)受力的影響進(jìn)行了一定的分析。并計(jì)算了針齒與凸輪、內(nèi)擺線輪之間的接觸應(yīng)力,為本機(jī)構(gòu)的機(jī)構(gòu)設(shè)計(jì)和相關(guān)參數(shù)的選取提供了理論依據(jù)。 最后,設(shè)計(jì)本機(jī)構(gòu)樣機(jī)的具體結(jié)構(gòu)。在綜合考慮前面工作結(jié)論的基礎(chǔ)上確定樣機(jī)的參數(shù),設(shè)計(jì)全部零件,并在Pro/e中進(jìn)行了虛擬裝配,對(duì)整體機(jī)構(gòu)進(jìn)行干涉檢查,便于及時(shí)發(fā)現(xiàn)設(shè)計(jì)缺陷。對(duì)整機(jī)進(jìn)行平衡設(shè)計(jì),推導(dǎo)平衡配重的計(jì)算公式,實(shí)現(xiàn)慣性力(矩)的平衡。應(yīng)用Adams對(duì)機(jī)構(gòu)進(jìn)行了仿真求得機(jī)構(gòu)輸出速度曲線與理論一致。最后,對(duì)樣機(jī)進(jìn)行加工試制,并進(jìn)行了運(yùn)轉(zhuǎn)。
[Abstract]:Indexing cam mechanism is commonly used to realize intermittent motion in automatic mechanical production. It is widely used in food, medicine, printing and other industries. In order to meet the requirements of high speed and large degree indexing of automatic machinery, a new double meshing needle cam indexing mechanism is proposed in this paper. This mechanism can achieve a large degree and compact structure, and has a broad application prospect. Firstly, this paper describes the transmission principle of the new double engagement needle cam indexing mechanism, defines the main design parameters, and designs the structure of the mechanism. The equations of cam and cycloid contour are established, and the cam and inner cycloid contour are plotted by Matlab. The influence of main parameters on the profile of the cam is discussed. On the basis of the above research, the 3D modeling of the main components of the mechanism is completed by using the 3D design software Pro/e, by calculating the coordinate points of the cam and the curve of the cycloid wheel. At the same time, the Pro/e Mechanism module is used to simulate and analyze the mechanism to verify the feasibility of its driving principle. Secondly, the force between the needle tooth and the cam and the inner cycloid wheel is analyzed. The deformation coordination condition is established and the force arm of the needle teeth acting on the meshing point is analyzed. Combined with the meshing state of the cam and the needle tooth, the pressure angle of the cam and the pressure angle of the cycloid wheel and the force at the engagement point of the needle tooth at any time are calculated by Matlab. The influence of some parameters on pressure angle and mechanical force is analyzed. The contact stress between the needle tooth and the cam and the inner cycloid wheel is calculated, which provides a theoretical basis for the mechanism design and the selection of the related parameters. Finally, the structure of the prototype is designed. On the basis of synthetically considering the conclusions of the previous work, the parameters of the prototype are determined, all the parts are designed, and virtual assembly is carried out in Pro/e to check the interference of the whole mechanism so as to find the design defects in time. The balance design of the whole machine is carried out, and the calculation formula of balance and counterweight is deduced to realize the balance of inertia force (moment). The output velocity curve of the mechanism obtained by Adams simulation is in agreement with the theory. Finally, the prototype was manufactured and operated.
【學(xué)位授予單位】：天津科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TH112.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 彭國(guó)勛,肖正陽(yáng),田惠民;一種適用于包裝機(jī)械的理想步進(jìn)機(jī)構(gòu)——平行分度凸輪機(jī)構(gòu)[J];包裝工程;1989年01期

2 陶學(xué)恒,劉健,肖正揚(yáng),王其超,吳宏基;包絡(luò)蝸桿分度凸輪機(jī)構(gòu)的嚙合原理及分析[J];大連理工大學(xué)學(xué)報(bào);1999年05期

3 王其超;;點(diǎn)接觸式高速弧面分度凸輪機(jī)構(gòu)的設(shè)計(jì)[J];大連輕工業(yè)學(xué)院學(xué)報(bào);1992年Z2期

4 李力行;洪淳赫;;擺線針輪行星傳動(dòng)中擺線輪齒形通用方程式的研究[J];大連鐵道學(xué)院學(xué)報(bào);1992年01期

5 張玉華,包家漢,何富春;基于OpenGL的新型平行分度凸輪機(jī)構(gòu)設(shè)計(jì)與仿真[J];安徽工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版);2005年02期

6 梁錦華;蝸桿凸輪機(jī)構(gòu)的預(yù)緊干涉[J];合肥工業(yè)大學(xué)學(xué)報(bào);1982年02期

7 洪振宇;許致華;;新型行星分度凸輪機(jī)構(gòu)瞬心線的研究[J];機(jī)床與液壓;2008年09期

8 陳兵奎;房婷婷;李朝陽(yáng);王淑妍;;擺線針輪行星傳動(dòng)共軛嚙合理論[J];中國(guó)科學(xué)(E輯:技術(shù)科學(xué));2008年01期

9 黃曉劍;雙擺線滾子行星傳動(dòng)原理初探[J];機(jī)械設(shè)計(jì)與研究;1989年04期

10 曹西京,楊芙蓮,曹巨江;一種全新型弧面球包絡(luò)凸輪分度機(jī)構(gòu)的研究[J];機(jī)械設(shè)計(jì)與研究;2003年01期

相關(guān)博士學(xué)位論文 前1條

1 沈煜;活齒分度凸輪機(jī)構(gòu)的創(chuàng)新設(shè)計(jì)與研究[D];天津大學(xué);2008年

，

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