本文選題：弧齒錐齒輪 + 熱滾軋成形��； 參考：《河南科技大學(xué)》2017年碩士論文

【摘要】：弧齒錐齒輪廣泛應(yīng)用于相交軸的機(jī)械傳動(dòng)中作為主傳動(dòng)部件。目前,弧齒錐齒輪的加工方法主要以銑齒為主,但這種加工方法存在材料利用率低、生產(chǎn)效率低、制造成本高,以及因?yàn)榍袛嗔私饘倮w維流線而造成齒根彎曲強(qiáng)度降低等問題�；↓X錐齒輪大輪采用精鍛成形比切削加工使用壽命明顯提高,但弧齒錐齒輪小輪齒形模具的齒頂厚度較薄,鍛造過程中會(huì)迅速地退火變形,導(dǎo)致小輪精鍛模具壽命較低,另外小輪的精鍛模具制造也十分困難�；诖�,本文提出用熱滾軋近成形的方法制造弧齒錐齒輪小輪。本文的主要內(nèi)容如下:(1)借鑒圓柱齒輪和花鍵滾軋成形技術(shù),分析工具輪與工件運(yùn)動(dòng)關(guān)系,依據(jù)齒輪嚙合原理,構(gòu)建弧齒錐齒輪小輪熱滾軋成形的運(yùn)動(dòng)模型。編寫小輪及共軛工具輪齒面點(diǎn)求解程序,將齒面點(diǎn)導(dǎo)入到UG中進(jìn)行三維建模,完成裝配,進(jìn)行運(yùn)動(dòng)仿真。(2)將三維模型導(dǎo)入DEFORM-3D中,進(jìn)行熱滾軋過程模擬,對(duì)弧齒錐齒輪小輪熱滾軋工藝進(jìn)行分析,驗(yàn)證滾軋工藝的可行性。對(duì)滾軋成形過程中等效應(yīng)變場、等效應(yīng)力場、溫度場及載荷-行程曲線等物理量場進(jìn)行分析,獲得滾軋成形的工藝參數(shù)。(3)依據(jù)滾軋?jiān)砗蜐L軋過程中工具輪與輪坯的運(yùn)動(dòng)關(guān)系,進(jìn)行整個(gè)試驗(yàn)裝置及零部件的方案設(shè)計(jì)。對(duì)液壓系統(tǒng)、同步驅(qū)動(dòng)裝置、工裝夾具進(jìn)行結(jié)構(gòu)設(shè)計(jì)�；贏nsys Workbench有限元分析軟件,對(duì)試驗(yàn)裝置的關(guān)鍵部位進(jìn)行動(dòng)、靜態(tài)特性分析。
[Abstract]:Spiral bevel gears are widely used as main transmission parts in mechanical transmission of intersecting shafts. At present, the machining method of arc bevel gear is mainly milling teeth, but this machining method has some problems, such as low material utilization, low production efficiency, high manufacturing cost, and the reduction of tooth root bending strength due to cutting off metal fiber streamline. The service life of arc bevel gear by precision forging is obviously longer than that by cutting, but the thickness of tooth top of the die of small tooth bevel gear is thinner, and the die life of precision forging die of small wheel will be reduced because of the rapid annealing deformation during the forging process. In addition, the manufacturing of precision forging dies for small wheels is also very difficult. Based on this, this paper puts forward the method of hot rolling near-forming to fabricate arc bevel gear pinion. The main contents of this paper are as follows: (1) drawing lessons from the technology of cylindrical gear and spline rolling, analyzing the motion relationship between tool wheel and workpiece, and according to the meshing principle of gear, the motion model of spiral bevel gear's hot rolling forming is constructed. The program is written to solve the tooth surface point of the small wheel and conjugate tool gear. The tooth surface point is imported into UG for 3D modeling, and the assembly is completed. The 3D model is imported into DEFORM-3D to simulate the hot rolling process. The hot rolling process of spiral bevel gear is analyzed to verify the feasibility of rolling process. By analyzing the equivalent strain field, equal effect force field, temperature field and load-stroke curve in rolling forming process, the process parameters of rolling forming are obtained. Carry out the scheme design of the whole test device and parts. Structure design of hydraulic system, synchronous drive device and fixture. Based on Ansys Workbench finite element analysis software, the dynamic and static characteristics of the key parts of the test device are analyzed.
【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)】：TH132.41

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本文編號(hào)：1949246