發(fā)布時(shí)間：2018-09-07 21:06

【摘要】：擺線齒錐齒輪具有傳動(dòng)平穩(wěn)、承載能力強(qiáng)、噪聲低的優(yōu)點(diǎn),廣泛應(yīng)用于汽車驅(qū)動(dòng)橋作為傳動(dòng)部件。擺線齒錐齒輪與格里森制弧齒錐齒輪的端面銑削法不同,通過(guò)端面滾齒法加工,其形成的齒面更為復(fù)雜。我國(guó)對(duì)擺線齒錐齒輪的研究起步較晚,對(duì)擺線齒錐齒輪切齒加工技術(shù)研究不夠深入,制造裝備水平與發(fā)達(dá)國(guó)家差距較大,嚴(yán)重阻礙了我國(guó)錐齒輪技術(shù)的發(fā)展。鑒于此,本文從我國(guó)國(guó)情出發(fā),提出了四軸聯(lián)動(dòng)加工擺線齒錐齒輪的新方法。主要研究?jī)?nèi)容如下:1.通過(guò)研究傳統(tǒng)機(jī)械式機(jī)床和六軸聯(lián)動(dòng)機(jī)床結(jié)構(gòu)和運(yùn)動(dòng)方式的異同點(diǎn),提出基于四軸聯(lián)動(dòng)加工無(wú)偏置擺線齒錐齒輪的新方法,介紹該方法運(yùn)動(dòng)軸的運(yùn)動(dòng)方式,初步提出該加工方法具有可行性。2.研究加工擺線齒錐齒輪常用的刀具結(jié)構(gòu),通過(guò)對(duì)刀具和擺線齒錐齒輪建立展成加工數(shù)學(xué)模型,得到擺線齒錐齒輪產(chǎn)形面和加工齒面的齒面方程以及單位法矢。通過(guò)離散化齒面點(diǎn),建立齒面三維造型,研究機(jī)床加工參數(shù)對(duì)齒面誤差的影響規(guī)律。計(jì)算齒面曲率參數(shù),編寫TCA程序,利用TCA程序分析刀盤參數(shù)對(duì)齒面嚙合性能的影響。3.建立四軸聯(lián)動(dòng)加工方式的數(shù)學(xué)模型,研究加工時(shí)四個(gè)運(yùn)動(dòng)軸的運(yùn)動(dòng)關(guān)系。與機(jī)械式機(jī)床的加工方式的主要不同點(diǎn)在于展成加工時(shí)刀盤做平移運(yùn)動(dòng),因而沒(méi)有隨著搖臺(tái)轉(zhuǎn)動(dòng)的附加自轉(zhuǎn)角。設(shè)計(jì)切齒實(shí)驗(yàn)流程,編寫數(shù)控程序,進(jìn)行切齒加工實(shí)驗(yàn)、齒面誤差檢測(cè)實(shí)驗(yàn)和接觸區(qū)檢測(cè)實(shí)驗(yàn)。實(shí)驗(yàn)結(jié)果證明,用四軸聯(lián)動(dòng)加工無(wú)偏置擺線齒錐齒輪可以得到較為理想的齒面和接觸區(qū)。
[Abstract]:Cycloidal bevel gear has the advantages of stable transmission, strong bearing capacity and low noise, so it is widely used as driving part of automobile drive axle. The end milling method of cycloidal bevel gear is different from that of Gleason spiral bevel gear. The research on cycloidal bevel gear started late in our country, and the research on the machining technology of cycloidal bevel gear is not deep enough, and the manufacturing equipment level is far from that of developed countries, which seriously hinders the development of bevel gear technology in China. In view of this, this paper presents a new method for machining cycloidal bevel gear with four axes linkage according to the national conditions of our country. The main research contents are as follows: 1. By studying the similarities and differences between the structure and motion mode of traditional mechanical machine tool and six-axis linkage machine tool, a new method of machining non-offset cycloidal bevel gear based on four-axis linkage is put forward, and the motion mode of this method is introduced. The feasibility of this processing method is put forward preliminarily. The common tool structure for machining cycloidal bevel gear is studied. By establishing the mathematical model of generating tool and cycloidal bevel gear, the tooth surface equation and unit normal vector of cycloidal bevel gear are obtained. Three dimensional modeling of tooth surface is established by discretization of tooth surface points, and the influence of machining parameters on tooth surface error is studied. The curvature parameter of tooth surface is calculated, TCA program is written, and the influence of cutter head parameters on meshing performance of tooth surface is analyzed by TCA program. A mathematical model of four-axis linkage machining was established to study the kinematic relationship of the four axes. The main difference between the machining method and the mechanical machine tool is that the cutter head moves in translation when it is extended, so there is no additional rotation angle with the shaking table. The experiment flow of tooth cutting is designed, the NC program is written, the experiment of tooth cutting, the experiment of tooth surface error detection and the test of contact area are carried out. The experimental results show that the ideal tooth surface and contact area can be obtained by four-axis linkage machining of non-offset cycloidal bevel gear.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG61

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