【摘要】：面齒輪傳動(dòng)是傳遞相交軸或交錯(cuò)軸運(yùn)動(dòng)的重要機(jī)械傳動(dòng)系統(tǒng)。由于面齒輪齒面形狀復(fù)雜和加工過(guò)程難度大,使獲取高精度齒面成為一個(gè)關(guān)鍵問(wèn)題。本文旨在提高面齒輪磨削質(zhì)量和生產(chǎn)加工效率,對(duì)碟形砂輪磨削正交面齒輪的磨削力及工藝參數(shù)優(yōu)化方面進(jìn)行研究,主要包括以下內(nèi)容:基于碟形砂輪磨削正交面齒輪。國(guó)內(nèi)對(duì)碟形砂輪磨削面齒輪的技術(shù)研究是近些年開(kāi)始的,本文就碟形砂輪磨削正交面齒輪關(guān)鍵技術(shù)原理等進(jìn)行闡述,介紹了面齒輪齒面成形加工運(yùn)動(dòng)及包絡(luò)方式。面齒輪磨削力形成機(jī)理。根據(jù)面齒輪點(diǎn)接觸式磨削原理與磨削理論,介紹了磨削力的形成原因與過(guò)程,闡述了格里森瞬時(shí)橢圓接觸理論與曲面有關(guān)知識(shí);重點(diǎn)對(duì)磨削力的幾何影響因素(磨削接觸弧長(zhǎng)和接觸寬度等)的數(shù)學(xué)公式進(jìn)行了分析及推導(dǎo)。面齒輪磨削力的建模及工藝影響分析。理論上重點(diǎn)分析了磨削用量對(duì)磨削力的影響趨勢(shì);此外,介紹了磨削力對(duì)工件的影響以及磨削力的測(cè)量方法;從單顆磨粒在磨削過(guò)程中的受力分析入手,結(jié)合面齒輪齒面曲率大小,將面齒輪復(fù)雜曲面轉(zhuǎn)換為傾斜面,綜合傾斜面磨削理論,建立了面齒輪磨削力的數(shù)學(xué)模型;通過(guò)對(duì)磨削力的實(shí)例仿真分析,得到了磨削用量對(duì)磨削力不同的影響規(guī)律;最后,利用實(shí)驗(yàn)驗(yàn)證所建磨削力的數(shù)學(xué)模型與仿真結(jié)果,通過(guò)對(duì)比仿真結(jié)果與實(shí)測(cè)結(jié)果發(fā)現(xiàn)兩者數(shù)據(jù)基本相符。面齒輪磨削力的建模及工藝影響分析可為后續(xù)工藝參數(shù)的優(yōu)化提供一定理論依據(jù)。面齒輪磨削加工工藝參數(shù)的優(yōu)化研究。著眼于生產(chǎn)效率與表面質(zhì)量的提高,對(duì)面齒輪磨削加工工藝參數(shù)進(jìn)行了分析;在此基礎(chǔ)上,以生產(chǎn)效率和表面粗糙度為優(yōu)化目標(biāo)函數(shù),考慮表面粗糙度、磨削功率、磨削燒傷為約束條件,并且綜合考慮磨削用量的邊界范圍,建立了多目標(biāo)非線性的優(yōu)化數(shù)學(xué)模型;針對(duì)所建的優(yōu)化模型,介紹了遺傳算法與內(nèi)點(diǎn)法有關(guān)理論,利用遺傳算法與內(nèi)點(diǎn)法相結(jié)合的方法對(duì)所建的優(yōu)化數(shù)學(xué)模型進(jìn)行求解,最終結(jié)合面齒輪實(shí)際磨削加工情況以及磨削力因素,得到了三組優(yōu)化工藝參數(shù)方案;為了驗(yàn)證優(yōu)化后的工藝參數(shù),設(shè)計(jì)并實(shí)施了有關(guān)實(shí)驗(yàn),通過(guò)對(duì)比優(yōu)化仿真結(jié)果,兩者相對(duì)誤差在可信范圍內(nèi)。這為實(shí)際加工面齒輪的生產(chǎn)廠家提供了參考。
[Abstract]:Surface gear transmission is an important mechanical transmission system to transfer the movement of intersecting shaft or staggered shaft. Due to the complexity of tooth surface shape and the difficulty of machining, it is a key problem to obtain high precision tooth surface. The aim of this paper is to improve the grinding quality and production efficiency of surface gear. The grinding force and technological parameters optimization of disc wheel grinding orthogonal face gear are studied. The main contents are as follows: grinding orthogonal surface gear based on disc wheel. In recent years, the research on the technology of grinding face gear with disc grinding wheel has been started in China. This paper expounds the key technology principle of grinding orthogonal face gear with disc grinding wheel, and introduces the machining movement and enveloping method of surface gear tooth surface forming. Surface gear grinding force formation mechanism. According to the contact grinding principle and grinding theory of surface gear, the forming reason and process of grinding force are introduced, and the knowledge of Gleason's instantaneous elliptical contact theory and surface is expounded. The mathematical formulas of the geometric factors affecting grinding force (grinding contact arc length and contact width etc.) are analyzed and deduced. Surface gear grinding force modeling and process impact analysis. In addition, the influence of grinding force on workpiece and the measuring method of grinding force are introduced. Combined with the curvature of surface gear tooth surface, the complex surface of surface gear is converted into inclined surface, and the mathematical model of grinding force of surface gear is established by synthesizing the theory of inclined surface grinding. Finally, the mathematical model and simulation results of the grinding force are verified by experiments, and the comparison between the simulation results and the measured results shows that the two data are basically consistent. Surface gear grinding force modeling and process impact analysis can provide a theoretical basis for the optimization of subsequent process parameters. Research on Optimization of Grinding process parameters for Surface Gear. Aiming at the improvement of production efficiency and surface quality, the grinding process parameters of face gear are analyzed, and the production efficiency and surface roughness are taken as the optimization objective function, and the surface roughness and grinding power are considered. The multi-objective nonlinear optimization mathematical model is established by considering the boundary range of grinding amount and the genetic algorithm and the interior point method are introduced for the optimization model. The optimization mathematical model is solved by the combination of genetic algorithm and interior point method. Finally, three groups of optimized process parameter schemes are obtained by combining the actual grinding conditions and grinding force factors of surface gear. In order to verify the optimized process parameters, the experiments were designed and implemented, and the relative error was found to be within the credible range by comparing the simulation results. This has provided the reference for the actual processing face gear manufacturer.
【學(xué)位授予單位】：湖南工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG616

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