本文選題：小模數(shù)　切入點(diǎn)：三維建模　出處：《河南科技大學(xué)》2014年碩士論文

【摘要】：弧齒錐齒輪因其承載能力強(qiáng)，傳動(dòng)比大等優(yōu)勢(shì)，在相交軸傳動(dòng)件的行業(yè)內(nèi)占據(jù)著非常重要的地位。小模數(shù)弧齒錐齒輪廣泛應(yīng)用于電動(dòng)工具、縫紉設(shè)備等行業(yè)，市場(chǎng)需求量巨大。小模數(shù)弧齒錐齒輪由于尺寸小，，小輪無法采用單面法加工以與雙面法加工的大輪相配，而只能采用雙面法加工，這種組合稱之為雙重雙面法。但隨著相關(guān)整機(jī)性能的不斷提高，對(duì)小模數(shù)弧齒錐齒輪的嚙合性能要求也越來越高。以往的小模數(shù)弧齒錐齒輪加工方法，加工周期雖短，但因其加工特點(diǎn)，無法滿足齒面的良好嚙合，無法單獨(dú)控制配對(duì)齒面的嚙合質(zhì)量，從而齒面嚙合不穩(wěn)定、噪聲大，嚙合性能較差。 為了提高小模數(shù)弧齒錐齒輪的嚙合性能。本文擬采用的加工方法為：小輪采用雙面法銑齒，大輪的齒形由粉末冶金成形加工，即給定雙面法小輪，基于齒輪嚙合原理，構(gòu)建具有良好嚙合性能的配對(duì)大輪齒面，大輪用粉末冶金法批量生產(chǎn)。本文從以下幾個(gè)方面進(jìn)行了研究： 1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)，使得齒輪副的加工參數(shù)在理論上擁有較好的嚙合性能，為兩齒面精確傳動(dòng)創(chuàng)建理論依據(jù)。以一對(duì)齒輪為例，在滿足特定嚙合性能與齒面接觸的基礎(chǔ)之上，設(shè)計(jì)加工參數(shù)，并創(chuàng)建齒輪副的三維模型。 2根據(jù)齒輪副的加工參數(shù)，建立齒面加工坐標(biāo)系。由刀具與被加工齒面間的位置與運(yùn)動(dòng)關(guān)系，得到齒面方程，構(gòu)建齒面加工的數(shù)學(xué)模型。用TCA分析齒面的接觸情況，運(yùn)用UG中的數(shù)控模塊模擬齒輪模具的加工軌跡，并生成加工代碼。 3探討了粉末冶金標(biāo)準(zhǔn)齒輪的加工方法，即在銑齒機(jī)上銑削和在五軸高精密數(shù)控加工中心上加工標(biāo)準(zhǔn)齒輪的方法。根據(jù)UG下的三維模型，選擇在數(shù)控加工中心上加工出與三維模型相同的標(biāo)準(zhǔn)齒輪。 4標(biāo)準(zhǔn)齒輪的加工試驗(yàn)。受加工條件所限，改為加工中等模數(shù)的齒輪，根據(jù)齒輪齒形加工的工藝參數(shù)，由精確的三維齒面模型生成數(shù)控加工程序，在銑齒機(jī)上銑削出標(biāo)準(zhǔn)齒輪。并在齒輪檢查機(jī)上對(duì)標(biāo)準(zhǔn)齒輪進(jìn)行滾動(dòng)檢查，分析齒面接觸狀況。
[Abstract]:Arc bevel gear has a very important position in the industry of intersecting shaft transmission because of its strong bearing capacity and large transmission ratio. Small modulus spiral bevel gear is widely used in electric tools, sewing equipment and other industries. The market demand is huge. Because of the small size of the small modulus arc bevel gear, the small wheel can not be processed by one side method to match the big wheel made by the double side method, but can only be processed by the double side method. This combination is called double double face method. However, with the continuous improvement of the performance of the whole machine, the meshing performance of small modulus arc bevel gears is becoming more and more high. The previous machining methods of small modulus arc bevel gears have a short processing period. However, because of its processing characteristics, it can not satisfy the good meshing of the tooth surface, and can not control the meshing quality of the paired tooth surface alone, thus the tooth surface meshing is unstable, the noise is large, and the meshing performance is poor. In order to improve the meshing performance of small modulus arc bevel gears, the machining methods proposed in this paper are as follows: the teeth of small wheels are milled on two sides, the tooth profile of large wheels is formed by powder metallurgy, that is to say, given double face small wheels, based on the meshing principle of gears, A pair of large gear tooth surfaces with good meshing performance was constructed and produced in batches by powder metallurgy. The following aspects were studied in this paper:. 1 based on the local synthesis method and TCA technology, the machining parameters of the large wheel one-sided method and the small wheel double-sided method are designed, so that the machining parameters of the gear pair have better meshing performance in theory. Taking a pair of gears as an example, on the basis of satisfying the specific meshing performance and contact with the tooth surface, the machining parameters are designed and the three-dimensional model of the gear pair is created. (2) according to the machining parameters of gear pair, the machining coordinate system of tooth surface is established. The equation of tooth surface is obtained from the relationship between the position and motion of the cutting tool and the processed tooth surface, and the mathematical model of tooth surface machining is constructed. The contact of tooth surface is analyzed by TCA. The NC module in UG is used to simulate the machining track of gear die and generate machining code. 3. The machining method of powder metallurgy standard gear is discussed, that is, milling on milling machine and machining standard gear on five-axis high precision NC machining center. The standard gear which is the same as the three-dimensional model is machined on the NC machining center. (4) Machining test of standard gear. Limited by machining conditions, it is changed to machining gear with medium modulus. According to the processing parameters of gear profile, the NC machining program is generated from the accurate three-dimensional tooth surface model. The standard gear is milled on the gear milling machine, and the standard gear is checked by rolling on the gear inspection machine to analyze the contact condition of the tooth surface.
【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】：2014
【分類號(hào)】：TH132.41;TG61

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