本文選題：成形磨削　切入點：螺桿轉(zhuǎn)子　出處：《大連理工大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：螺桿轉(zhuǎn)子作為螺桿壓縮機的核心部件其加工精度直接影響螺桿壓縮機的工作性能。目前成形磨削已逐漸取代銑削加工成為轉(zhuǎn)子精加工的主要方式,但國內(nèi)多數(shù)螺桿加工企業(yè)未能掌握轉(zhuǎn)子磨削專用精密加工設(shè)備的制造技術(shù),轉(zhuǎn)子加工誤差得不到控制,加工精度得不到保證,只能高價進口國外相應(yīng)加工設(shè)備。因此研究磨削螺桿轉(zhuǎn)子誤差控制方法對于實現(xiàn)轉(zhuǎn)子磨削專用精密加工設(shè)備國產(chǎn)化有著重要意義。 本文在國家自然科學(xué)基金項目(No.50975038)資助下,以課題組螺桿轉(zhuǎn)子的研究成果為基礎(chǔ),研究了螺桿轉(zhuǎn)子成形磨削原理及加工過程,建立了轉(zhuǎn)子磨削時分度誤差與型線誤差計算與補償模型,提出了轉(zhuǎn)子型線數(shù)據(jù)與砂輪數(shù)據(jù)的處理方法,開發(fā)了磨削螺桿轉(zhuǎn)子誤差控制軟件并采用工程實際數(shù)據(jù)對本文誤差控制方法進行了驗證。 首先,研究了圓柱螺旋面的加工原理�；趪Ш显斫⒘宿D(zhuǎn)子螺旋面與砂輪回轉(zhuǎn)面的接觸條件式。根據(jù)接觸條件式建立了轉(zhuǎn)子型線與砂輪截形的互逆求解數(shù)學(xué)模型。研究了轉(zhuǎn)子不產(chǎn)生過渡曲面與不被過切的條件,從而確定了砂輪安裝參數(shù)的調(diào)整范圍。 其次,提出了磨削轉(zhuǎn)子誤差控制方法。分析了螺桿轉(zhuǎn)子成形磨削加工過程,以此為基礎(chǔ)提出了轉(zhuǎn)子粗磨階段控制分度誤差,精磨階段控制型線誤差的誤差控制策略。針對轉(zhuǎn)子分度誤差,建立了誤差計算模型,通過調(diào)整磨削進給量實現(xiàn)了對分度誤差的控制。針對轉(zhuǎn)子型線誤差,提出了誤差評估方法,通過型線更新或砂輪修整實現(xiàn)了對型線誤差的控制。 接著,建立了螺桿檢測型線數(shù)據(jù)與砂輪修整數(shù)據(jù)的處理方法。采用角度法對螺桿檢測型線數(shù)據(jù)進行噪聲點剔除,采用離散點列能量法對其進行光順處理；對于砂輪修整數(shù)據(jù)采用雙圓弧樣條擬合法對其進行擬合處理。 最后,采用Matlab高級編程語言實現(xiàn)了分度誤差計算與補償、型線誤差評估與補償?shù)戎饕惴?開發(fā)了《磨削螺桿轉(zhuǎn)子誤差控制軟件》,并對軟件進行了測試；通過提取螺桿磨床TG350E勺實際加工數(shù)據(jù)驗證了本文誤差控制方法的正確性。 本文研究的磨削螺桿轉(zhuǎn)子誤差控制方法對于提高我國螺桿轉(zhuǎn)子高效高精度加工水平有著重要的指導(dǎo)意義和參考價值。
[Abstract]:As the core component of screw compressor, the machining accuracy of screw rotor has a direct impact on the performance of screw compressor. At present, forming grinding has gradually replaced milling as the main way of rotor finishing. However, most screw processing enterprises in China have failed to master the manufacturing technology of the special precision machining equipment for rotor grinding, so the rotor machining error can not be controlled and the machining accuracy can not be guaranteed. Therefore, it is of great significance to study the error control method of grinding screw rotor in order to realize the localization of the special precision machining equipment for rotor grinding. This paper, supported by National Natural Science Foundation Project No. 50975038, has studied the grinding principle and machining process of screw rotor based on the research results of the research group of screw rotor. The calculation and compensation model of rotor grinding time division error and profile error is established, and the processing method of rotor profile data and grinding wheel data is put forward. The error control software of grinding screw rotor is developed and the error control method is verified by engineering data. First, In this paper, the machining principle of cylindrical helical surface is studied. Based on the meshing principle, the contact conditions between the rotor helical surface and the rotary surface of the grinding wheel are established. According to the contact condition formula, the mutual inverse solution mathematical model of the rotor profile and the grinding wheel section is established. The condition that the rotor does not produce transition surface and is not overtangent is studied. Thus, the adjustment range of grinding wheel installation parameters is determined. Secondly, the error control method of grinding rotor is put forward, and the grinding process of screw rotor is analyzed, based on which the control indexing error in rough grinding stage of rotor is proposed. The error control strategy of control profile error in grinding stage is presented. The error calculation model is established for the rotor indexing error, and the indexing error is controlled by adjusting the grinding feed, and the error evaluation method is put forward for the rotor profile error. The control of the profile error is realized by updating the profile or dressing the grinding wheel. Then, the processing method of screw inspection profile data and grinding wheel dressing data is established. The angle method is used to eliminate the noise points of the screw detection profile data, and the discrete point row energy method is used to smooth the data. The grinding wheel dressing data are fitted by double arc spline fitting method. Finally, the Matlab advanced programming language is used to realize the calculation and compensation of indexing error, the evaluation and compensation of profile error, and the software of grinding screw rotor error control is developed, and the software is tested. The accuracy of the error control method is verified by extracting the actual processing data of the screw grinder TG350E spoon. The error control method of grinding screw rotor studied in this paper has important guiding significance and reference value for improving the high efficiency and high precision machining level of screw rotor in China.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TG580.6;TH45

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本文編號：1573581