【摘要】：理論研究表明圓弧齒輪在承載能力等方面展現(xiàn)出明顯的優(yōu)勢(shì),尤其是高精度的硬齒面圓弧齒輪具有較高的承載能力,但硬齒面磨削一直是其難點(diǎn)。四圓弧齒廓齒輪是一種新型的圓弧齒輪,因?yàn)槠潺X形較為復(fù)雜,且齒廓參數(shù)繁多,對(duì)它的加工提出了更高的要求。數(shù)控成形法磨削加工是提高硬齒面齒輪加工精度,降低齒輪齒面粗糙度的有效途徑,且具有高效、高精度等優(yōu)點(diǎn)。理論上數(shù)控成形法磨削能夠適應(yīng)任何齒廓曲線的齒面加工,所以將成形法磨削應(yīng)用到硬齒面四圓弧齒輪的加工中是較好的選擇。因此,本文將以成形法磨削加工原理為基礎(chǔ),針對(duì)硬齒面四圓弧齒廓齒輪的制造加工問(wèn)題進(jìn)行探索和研究,該項(xiàng)研究工作對(duì)硬齒面四圓弧齒輪實(shí)際加工制造具有一定理論指導(dǎo)價(jià)值和現(xiàn)實(shí)參考意義。本課題對(duì)四圓弧齒廓齒輪的成形法磨削進(jìn)行了研究、探索,論文主要內(nèi)容以及取得的成果如下：(1)基于成形法磨削原理及成形磨削運(yùn)動(dòng),建立四圓弧齒輪成形磨削幾何模型及相關(guān)空間坐標(biāo)系。通過(guò)四圓弧齒輪齒面方程、曲面空間嚙合接觸條件以及空間坐標(biāo)系之間的相互轉(zhuǎn)換,得到四圓弧齒輪齒槽面與成形砂輪磨削表面之間的空間接觸線數(shù)學(xué)模型,最終求得成形砂輪軸向截形。利用MATLAB數(shù)值計(jì)算和圖形處理等功能對(duì)所求成形砂輪軸向截形進(jìn)行了計(jì)算并輸出仿真圖形。(2)根據(jù)成形法磨削時(shí)所需運(yùn)動(dòng),運(yùn)用SOLIDWORKS軟件建立成形磨齒機(jī)的三維虛擬樣機(jī),并將其導(dǎo)入VERICUT軟件平臺(tái)里,與求得的砂輪軸向截形形成的成形砂輪相結(jié)合,編寫數(shù)控程序驅(qū)動(dòng)虛擬樣機(jī)進(jìn)行四圓弧齒輪成形磨削加工的仿真。為四圓弧齒廓齒輪的實(shí)際生產(chǎn)提供理論參考。(3)完成了硬齒面四圓弧齒輪的實(shí)際加工和四圓弧齒輪減速器的組裝,根據(jù)設(shè)計(jì)的性能試驗(yàn)方案搭建具體的實(shí)物試驗(yàn)臺(tái),實(shí)現(xiàn)了四圓弧齒輪減速器的空載試驗(yàn)、加載試驗(yàn)和超載試驗(yàn),并對(duì)轉(zhuǎn)速轉(zhuǎn)矩、傳動(dòng)效率、噪聲、油池溫度等進(jìn)行了數(shù)據(jù)采集和對(duì)比分析。通過(guò)本次試驗(yàn),驗(yàn)證了硬齒面四圓弧齒廓齒輪的承載能力,為后續(xù)工作奠定了基礎(chǔ)。
[Abstract]:Theoretical research shows that circular arc gear has obvious advantages in bearing capacity, especially the high precision hard tooth arc gear has higher bearing capacity, but hard tooth surface grinding is always its difficulty. The four-arc tooth profile gear is a new type of circular arc gear, because its tooth shape is more complicated, and the tooth profile parameters are various, the higher requirements for its machining are put forward. NC forming grinding is an effective way to improve the machining accuracy and reduce the surface roughness of hard gear, and has the advantages of high efficiency and high precision. In theory, NC forming grinding method can adapt to the tooth surface machining of any tooth profile curve, so it is a better choice to apply the forming method grinding to the machining of hard tooth surface four circular arc gear. Therefore, based on the principle of forming grinding, this paper will explore and study the manufacturing and processing of four circular arc gear with hard tooth surface. The research work has certain theoretical guiding value and practical reference significance for the manufacture of hard tooth surface four circular arc gear. The main contents and achievements of this paper are as follows: (1) based on the principle of forming grinding and the movement of forming grinding, The geometric model of forming grinding of four circular arc gears and the related space coordinate system are established. Based on the tooth surface equation of four circular arc gear, the contact condition of surface space meshing and the transformation of space coordinate system, the mathematical model of space contact line between the tooth groove surface of four circular arc gear and the grinding surface of forming grinding wheel is obtained. Finally, the axial section of the forming grinding wheel is obtained. The axial section of the formed grinding wheel is calculated and simulated by using the functions of MATLAB numerical calculation and graphic processing. (2) according to the motion required in the forming grinding process, the 3D virtual prototype of the forming grinding machine is established by using SOLIDWORKS software. It is introduced into the VERICUT software platform, and combined with the obtained grinding wheel formed by axial section, a numerical control program is written to drive the virtual prototype to simulate the forming grinding of four circular arc gears. It provides a theoretical reference for the practical production of four circular arc gear. (3) the actual machining of the four circular arc gear with hard tooth surface and the assembly of the gear reducer with four circular arc gears are completed, and the concrete physical test bench is built according to the designed performance test scheme. The no-load test, loading test and overload test of four-circular arc gear reducer are realized, and the data collection and comparative analysis of rotational speed torque, transmission efficiency, noise, oil pool temperature and so on are carried out. Through this experiment, the bearing capacity of the four circular arc gear with hard tooth surface is verified, which lays a foundation for the following work.
【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】：2016
【分類號(hào)】：TG616

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