本文關(guān)鍵詞： 六圓弧齒廓 靜力學(xué)接觸應(yīng)力 嚙合特性 六圓弧弧齒錐齒輪 仿真加工　出處：《寧夏大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：本文在多圓弧齒輪的基礎(chǔ)上提出了一種新型的六圓弧齒廓,這種新齒廓工作齒面由六段圓弧構(gòu)成。在嚙合傳動(dòng)過程中,一個(gè)軸向齒距內(nèi)最多可以存在六個(gè)接觸點(diǎn)分別分布在六段工作圓弧上,分散了輪齒所受的載荷提高了承載能力。本次研究對(duì)六圓弧齒輪齒廓齒輪的基礎(chǔ)特性進(jìn)行了分析以及將六圓弧齒廓運(yùn)用到弧齒錐齒輪上進(jìn)行了初步的研究,對(duì)后續(xù)的深入研究打下基礎(chǔ)。主要的研究成果如下:(1)通過對(duì)多圓弧齒輪齒型以及隨著齒廓圓弧數(shù)的增加對(duì)齒輪接觸力學(xué)性能提高的分析,提出六嚙合線圓弧齒廓,給出齒型詳細(xì)幾何參數(shù)表。運(yùn)用模擬展成加工的方法創(chuàng)建了三維模型。(2)運(yùn)用ABAQUS對(duì)六圓弧齒輪的靜力學(xué)接觸應(yīng)力求解,并與相同參數(shù)的多圓弧齒輪的進(jìn)行對(duì)比,得到了六圓弧齒輪嚙合點(diǎn)處的接觸應(yīng)力相對(duì)來說有所減小,從而承載能力增加的結(jié)論。(3)通過對(duì)六圓弧圓柱齒輪的嚙合過程的分析,運(yùn)用線圖法劃分出了多個(gè)區(qū)間;根據(jù)不同區(qū)間分類討論,給出了嚙合點(diǎn)數(shù)量及嚙合齒數(shù)目與齒寬之間的函數(shù),求解了嚙合過程中多點(diǎn)嚙合系數(shù)以及多對(duì)齒嚙合系數(shù),列出了計(jì)算表格,為以后六圓弧齒輪的設(shè)計(jì)參數(shù)的確定提供參照。(4)介紹了將新型齒廓運(yùn)用到弧齒錐齒輪上的理論可行性以及點(diǎn)接觸的傳動(dòng)原理,通過對(duì)加工刀具幾何參數(shù)分析闡述了六嚙合線弧齒錐齒輪傳動(dòng)過程中各個(gè)接觸點(diǎn)的嚙合順序,計(jì)算了傳遞扭矩時(shí)的重合度,給出了一種求解嚙合系數(shù)的方法。(5)通過對(duì)兩種不同的銑齒機(jī)機(jī)械結(jié)構(gòu)的分析,闡述了弧齒錐齒輪的假想平面輪的原理。建立加工所用機(jī)床坐標(biāo)系,根據(jù)各個(gè)坐標(biāo)系之間的位置關(guān)系由盤銑刀截面齒型坐標(biāo)變換得到錐齒輪齒面方程。在VERICUT軟件中模擬組裝了五軸銑齒機(jī),確定了毛坯參數(shù)以及床身調(diào)整參數(shù);選用數(shù)控加工系統(tǒng),編寫NC代碼,完成了仿真加工。
[Abstract]:In this paper, a new type of six-arc tooth profile is proposed based on multi-arc gear. The working surface of the new tooth profile is composed of six sections of circular arc. There may be at most six contact points in an axial tooth pitch distributed on six working arcs, The basic characteristics of the six circular arc gear profile gear are analyzed and the application of six circular arc tooth profile to the arc bevel gear is preliminarily studied. The main research results are as follows: 1) through the analysis of the tooth profile of multi-circular arc gear and the improvement of contact mechanical properties of gear with the increase of the number of circular arcs of tooth profile, the six meshing line circular arc tooth profile is put forward. In this paper, the detailed geometric parameter table of tooth shape is given. The three-dimensional model is created by using the method of simulation generating. (2) the static contact of six circular arc gears should be solved by ABAQUS, and compared with that of multi-circular arc gear with the same parameters. The conclusion that the contact stress at the meshing point of six circular arc gears is relatively reduced and the bearing capacity is increased is obtained. By analyzing the meshing process of six circular arc cylindrical gears, several sections are divided by using the graph method. According to the discussion of different interval classification, the function between the number of meshing points, the number of meshing teeth and the tooth width is given. The meshing coefficient and the meshing coefficient of many pairs of teeth in the course of meshing are solved, and the calculation table is given. This paper introduces the theoretical feasibility of applying the new tooth profile to the spiral bevel gear and the transmission principle of point contact for determining the design parameters of the six circular arc gears in the future. By analyzing the geometric parameters of machining tool, the meshing sequence of each contact point in the transmission process of six meshing line arc bevel gear is expounded, and the coincidence degree of transmission torque is calculated. In this paper, a method to solve the meshing coefficient is given. By analyzing the mechanical structure of two different milling machines, the principle of the hypothetical plane wheel of the spiral bevel gear is expounded, and the coordinate system of the machine tool used for machining is established. According to the position relation among coordinate systems, the bevel gear tooth surface equation is obtained by transforming the profile coordinates of the section teeth of the disc milling cutter. The five-axis gear milling machine is simulated and assembled in VERICUT software, the blank parameters and the adjustment parameters of the bed are determined, and the NC machining system is selected. NC code is written, and simulation processing is completed.
【學(xué)位授予單位】：寧夏大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG61;TG659

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