【摘要】：人字齒同步帶傳動(dòng)基礎(chǔ)理論與應(yīng)用研究是繼直齒和斜齒同步帶傳動(dòng)之后,帶傳動(dòng)領(lǐng)域里新的熱點(diǎn)研究課題。由于人字齒同步帶靠帶齒與輪齒相嚙合來傳遞動(dòng)力,兼有齒輪傳動(dòng)、鏈傳動(dòng)和摩擦型帶傳動(dòng)的優(yōu)點(diǎn),具有傳動(dòng)平穩(wěn)、傳遞功率大、傳動(dòng)比準(zhǔn)確、承載能力大、結(jié)構(gòu)簡(jiǎn)單、維護(hù)方便等優(yōu)點(diǎn)。本文通過理論計(jì)算和有限元仿真分析,設(shè)計(jì)計(jì)算新型人字齒同步帶齒形參數(shù)和結(jié)構(gòu)參數(shù),并確定了新型人字齒同步帶的特殊加工工藝。 在分析新型人字齒同步帶受力的基礎(chǔ)上,討論帶齒部和帶齒槽的變形量;考慮帶齒彈性變形協(xié)調(diào)條件,求得在已知松邊和緊邊拉力時(shí)新型人字齒同步帶的齒間載荷分布規(guī)律,得到主動(dòng)輪緊邊進(jìn)入嚙合的第一個(gè)帶齒承受最大法向載荷的結(jié)論�？紤]同步帶材料的特殊性,建立帶齒與輪齒嚙合的彈性接觸有限元數(shù)學(xué)模型,為后來的仿真分析奠定理論基礎(chǔ)。 以直齒高齒同步帶齒形為基礎(chǔ),利用保角映射法,以齒根最大應(yīng)力最小為目標(biāo),計(jì)算帶齒的齒根應(yīng)力,確定最佳帶齒齒形參數(shù)。根據(jù)嚙合原理,用齒廓法線法求出新型人字齒同步帶模具加工刀具及帶輪加工刀具齒形方程,并用MATLAB軟件畫出相應(yīng)的齒形。根據(jù)人字齒同步帶的特點(diǎn)及其特殊加工工藝,完成人字齒同步帶組合模具設(shè)計(jì)。根據(jù)人字齒同步帶制備的反成型原理,進(jìn)行人字齒同步帶模具滾刀設(shè)計(jì)和帶輪加工刀具的設(shè)計(jì)。確定新型人字齒同步帶的加工工藝,將加工出的帶與帶輪進(jìn)行嚙合測(cè)試。 在對(duì)人字齒同步帶傳動(dòng)進(jìn)行合理簡(jiǎn)化的基礎(chǔ)上,建立一對(duì)人字齒嚙合的三維模型,利用ANSYS有限元軟件對(duì)三維模型進(jìn)行了受力分析及有限元仿真,得出新型人字齒同步帶應(yīng)力分布狀態(tài),說明新型人字齒同步帶的齒根斷裂是主要的失效形式之一;有限元分析結(jié)果還可確定以齒根最大主應(yīng)力最小為目標(biāo)時(shí),新型人字齒同步帶的最佳螺旋角為30°。
[Abstract]:The research of basic theory and application of herringbone synchronous belt drive is a new hot research topic in the field of belt drive after straight and oblique teeth synchronous belt transmission. Because the herringbone synchronous belt is meshed with gear teeth to transmit power, it has the advantages of gear transmission, chain transmission and friction belt transmission. It has the advantages of stable transmission, high transmission power, accurate transmission ratio, large bearing capacity and simple structure. The maintenance is convenient and so on. Through theoretical calculation and finite element simulation analysis, this paper designs and calculates the tooth shape parameters and structural parameters of a new type of herringbone synchronous belt, and determines the special processing technology of the new type herringbone synchronous belt. Based on the analysis of the force of the new type of herringbone synchronous belt, the deformation of the belt and the slot are discussed. Considering the compatibility condition of elastic deformation with teeth, the distribution law of load between teeth of the new type of herringbone synchronous belt is obtained when the tension of loose and tight edges is known, and the conclusion that the first belt tooth with compact edge of the active wheel entering into meshing bears the maximum normal load is obtained. Considering the particularity of the material of synchronous belt, an elastic contact finite element mathematical model for meshing of belt teeth and gear teeth is established, which lays a theoretical foundation for the later simulation analysis. Based on the tooth profile of the straight high tooth synchronous belt, the maximum stress of the tooth root and the minimum of the tooth root stress are calculated by the conformal mapping method, and the optimum tooth profile parameters are determined. According to the meshing principle, the tooth profile equations of the new type of herringbone synchronous belt die machining tool and the belt wheel machining tool are obtained by using the tooth profile normal method, and the corresponding tooth profile is drawn by MATLAB software. According to the characteristics of herringbone synchronous belt and its special processing technology, the combined die design of herringbone synchronous belt is completed. According to the reverse forming principle of the miter synchronous belt, the design of the die hob and the cutting tool with wheel are carried out. The processing technology of the new herringbone synchronous belt was determined, and the meshing test was carried out between the machined tape and the belt wheel. On the basis of reasonable simplification of herringbone synchronous belt transmission, a three-dimensional meshing model of a pair of herringbone teeth is established. The force analysis and finite element simulation of the three-dimensional model are carried out by using ANSYS finite element software. The stress distribution state of the new herringbone synchronous belt is obtained, which indicates that the root fracture of the new herringbone synchronous belt is one of the main failure forms. The results of finite element analysis can also determine that the optimum spiral angle of the new type of herringbone synchronous belt is 30 擄when the maximum principal stress of the tooth root is the minimum.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH132.32

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 劉偉;;同步帶選型中的問題分析[J];科技信息;2013年19期

相關(guān)碩士學(xué)位論文 前1條

1 張衡;血型分析系統(tǒng)自動(dòng)加樣關(guān)鍵技術(shù)研究[D];重慶大學(xué);2012年

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本文編號(hào)：2309884