本文關(guān)鍵詞： 小模數(shù)弧齒錐齒輪 粉末冶金 模具 工藝　出處：《河南科技大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：弧齒錐齒輪由于其傳動(dòng)平穩(wěn)、強(qiáng)度高、承載能力強(qiáng)而廣泛應(yīng)用于機(jī)械產(chǎn)品中。目前,我國(guó)的縫制設(shè)備、電動(dòng)工具、小型機(jī)械儀表發(fā)展迅速,對(duì)這些產(chǎn)品的傳動(dòng)質(zhì)量要求越來(lái)越高,因此,小模數(shù)弧齒錐齒輪得到了廣泛應(yīng)用。然而,國(guó)內(nèi)的小模數(shù)弧齒錐齒輪生產(chǎn)技術(shù)落后,產(chǎn)品精度低,使用壽命短,嚴(yán)重影響了機(jī)器整體性能的使用。因此當(dāng)前迫切的需要在控制生產(chǎn)成本的基礎(chǔ)上,提高小模數(shù)弧齒錐齒輪的加工效率與制造精度。于是,本文提出了一種新的加工方案:小輪齒面采用常規(guī)雙面法展成銑齒加工,大輪采用粉末冶金法壓制成形。本文主要研究的內(nèi)容如下:1對(duì)小模數(shù)弧齒錐齒輪粉末冶金壓制成形的關(guān)鍵點(diǎn)和難點(diǎn)進(jìn)行了探討。通過(guò)對(duì)粉末冶金壓制成形工藝的的分析,結(jié)合小模數(shù)弧齒錐齒輪的幾何特點(diǎn),提出了小模數(shù)弧齒錐齒輪粉末壓制過(guò)程中模具以及壓坯密度的重要性。2基于局部綜合法、TCA技術(shù),設(shè)計(jì)大輪單面法、小輪雙面法的加工參數(shù)。首先,通過(guò)給定的雙面法銑齒小輪的齒面加工參數(shù),建立齒面加工坐標(biāo)系,選取參考點(diǎn),并計(jì)算齒面上該點(diǎn)處的主曲率與主方向,由一系列矩陣變換得到大輪的加工參數(shù),進(jìn)而對(duì)加工參數(shù)進(jìn)行TCA驗(yàn)證分析,使得齒輪副在理論上具有良好的嚙合性能。3對(duì)小模數(shù)弧齒錐齒輪副及模具進(jìn)行了精確建模。通過(guò)編制程序,生成UG識(shí)別的齒面點(diǎn)數(shù)據(jù),導(dǎo)入U(xiǎn)G軟件中擬合生成單個(gè)齒槽的齒面模型,進(jìn)而通過(guò)修剪、陣列等命令得到精確的小模數(shù)弧齒錐齒輪三維模型。通過(guò)運(yùn)動(dòng)仿真模擬齒輪副嚙合運(yùn)動(dòng),觀察嚙合運(yùn)動(dòng)時(shí)的接觸區(qū),驗(yàn)證TCA分析效果。由得到的大輪模型獲得粉末冶金壓制模具的三維模型。4通過(guò)Deform 3D軟件對(duì)粉末冶金的壓制過(guò)程進(jìn)行了模擬。通過(guò)建立小模數(shù)弧齒錐齒輪粉末冶金壓制成形工程的數(shù)值模擬仿真模型,對(duì)模擬后的齒輪進(jìn)行了密度、應(yīng)力、壓制壓力等齒輪性能的分析。對(duì)脫模過(guò)程進(jìn)行了模擬,出模過(guò)程順利。5研究了不同的壓制工藝及壓坯結(jié)構(gòu)對(duì)粉末冶金小模數(shù)弧齒錐齒輪性能的影響。結(jié)果顯示壓制速度越高、摩擦系數(shù)越小時(shí)壓坯的密度分布越均勻,壓坯高度越小、齒根圓角越大時(shí)齒部密度越大。6進(jìn)行了粉末冶金試驗(yàn)研究。以具體的小模數(shù)弧齒錐齒輪為例,進(jìn)行了大輪的粉末冶金成形試驗(yàn),以及配對(duì)小輪的銑齒試驗(yàn)。驗(yàn)證了粉末冶金法加工小模數(shù)弧齒錐齒輪的可行性。小輪采用雙面法加工,大輪采用粉末冶金快速成型,可以實(shí)現(xiàn)小模數(shù)弧齒錐齒輪的精密、高效生產(chǎn)。本文從如何制造出性能優(yōu)越的粉末冶金小模數(shù)弧齒錐齒輪的角度出發(fā),以鐵基粉末壓制成形這一重要工序?yàn)檠芯繉?duì)象,通過(guò)有限元分析軟件實(shí)現(xiàn)了小模數(shù)弧齒錐齒輪壓制成形過(guò)程的數(shù)值模擬,細(xì)致探討了影響小模數(shù)弧齒錐齒輪成形性能的幾個(gè)主要因素,為小模數(shù)弧齒錐齒輪的粉末冶金加工奠定了理論基礎(chǔ)、提供了技術(shù)支撐。
[Abstract]:The spiral bevel gear because of its smooth transmission, high strength, strong bearing capacity and is widely used in mechanical products. At present, China's sewing equipment, electric tools, mechanical instruments to drive the rapid development of the quality of these products have become increasingly demanding, therefore, small modulus spiral bevel gears are widely used. However, small modulus spiral bevel gear production technology of domestic products is backward, low precision, short service life, serious impact on the overall performance of the machine. So the urgent need in the control of production cost, improve processing efficiency and manufacturing precision of spiral bevel gears. Thus, the processing is proposed in this paper. A new scheme of using conventional method generating double-sided milling tooth tooth surface of the gear wheel, by the method of powder metallurgy compaction. The main contents of this paper are as follows: 1 the small modulus spiral bevel gears are pressed into powder metallurgy The key point of shape and difficulty are discussed. Through the analysis of the powder metallurgy pressing forming process, combined with the geometrical characteristics of spiral bevel gears, the spiral bevel gears in the powder pressing process and die pressing density.2 the importance of the local synthesis method, based on TCA technology, design of large single wheel method of processing parameters. The first ferry double method, given by the double-sided milling method ferry tooth surface machining parameters, then the tooth surface machining coordinates, the selected reference point, and calculate the tooth surface curvature of the main point and the main direction, get machining parameters of wheel is composed of a series of transform matrix, then the processing parameters were verified by TCA analysis, the gear meshing performance of.3 in theory has good for small modulus spiral bevel gears and die of precise modeling. Through programming to generate UG recognition points according to the tooth surface, import UG The tooth surface model fitting software generates a single slot, and then through pruning, array order of small modulus spiral bevel gears. The precise 3D model through the movement simulation simulation of gear meshing movement, observe the movement of the contact area of meshing effect. Through analysis, validation of the TCA Deform 3D software on the compaction process of powder metallurgy.4 simulation of three-dimensional model of powder metallurgy mold obtained by the wheel model. Through the establishment of small modulus spiral bevel gears powder metallurgy pressing forming project numerical simulation model, the simulation of the gear density, stress analysis, such as pressure gear performance. On the demolding process simulation research the effects of compaction technology and compact structure of powder metallurgy spiral bevel gear performance mode smoothly.5. The results showed that the higher the pressing speed, the friction coefficient is H compacts density distribution is more uniform and compact height is small, the greater the tooth root fillet density.6 was studied. The test of powder metallurgy spiral bevel gear as an example, the powder metallurgy wheel forming test, and milling test. The paired ferry to verify the feasibility of powder metallurgy processing small modulus spiral bevel gear. The ferry of double wheel machining method, the rapid prototyping of powder metallurgy, can realize the small modulus spiral bevel gears precision, efficient production. This article discusses how to create the superior performance of powder metallurgy small modulus spiral bevel gear angle, to Fe based powder compacting this important process as the research object, through the finite element analysis software to realize the numerical simulation of the forming process of spiral bevel gear pressing small modulus, discussing the influence of small modulus spiral bevel gear forming performance Several main factors have laid a theoretical foundation for the powder metallurgy of small modulus spiral bevel gear, and provide technical support.

【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(lèi)號(hào)】：TG61;TF124.3

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