本文選題：螺桿轉(zhuǎn)子 + 成形砂輪�。� 參考：《廈門大學(xué)》2014年碩士論文

【摘要】：螺桿壓縮機(jī)以其平穩(wěn)的高速性能、多相混輸性、排氣量穩(wěn)定及易于操作維護(hù)等優(yōu)點(diǎn),廣泛應(yīng)用于各工業(yè)領(lǐng)域。螺桿壓縮機(jī)核心部件螺桿轉(zhuǎn)子的制造過程中,由于轉(zhuǎn)子形狀復(fù)雜,螺旋面成形困難、制造精度不易保證等技術(shù)難題,使得其成形原理及精密制造技術(shù)的研究一直是行業(yè)發(fā)展的重要研究課題。隨著計算機(jī)科學(xué)和機(jī)械工程學(xué)科的發(fā)展與日益緊密的結(jié)合,現(xiàn)代制造技術(shù)得到飛速發(fā)展,出現(xiàn)了大量專用的螺桿轉(zhuǎn)子數(shù)控裝備及配套輔助軟件,但其核心技術(shù)仍由國外所掌握。雖然我國在轉(zhuǎn)子制造領(lǐng)域得到了很大進(jìn)步,但與世界領(lǐng)先技術(shù)相比仍然存在較大的差距,主要表現(xiàn)為加工效率低、精度不高且精度保持性較差。 在此背景下,本論文圍繞“螺桿壓縮機(jī)轉(zhuǎn)子齒廓磨削關(guān)鍵技術(shù)”這一課題,以實現(xiàn)精密、異形、復(fù)雜螺桿轉(zhuǎn)子的高效、高精度磨削為目標(biāo),對以下幾個方面做了較深入細(xì)致的研究： 1.基于螺旋面成形原理建立了轉(zhuǎn)子螺旋面與成形砂輪的接觸條件數(shù)學(xué)模型。在轉(zhuǎn)子實際型線數(shù)值分析的基礎(chǔ)上,引入了累加弦長參數(shù)三次樣條曲線求解轉(zhuǎn)子端面型線上各型值點(diǎn)的一階導(dǎo)數(shù),解決了型值點(diǎn)的大撓度問題。 2.求解了轉(zhuǎn)子齒廓磨削用成形砂輪廓形數(shù)學(xué)模型,將數(shù)值分析方法應(yīng)用于轉(zhuǎn)子端面型線和成形砂輪軸向截形處理,通過二維和三維干涉檢查方法評價與優(yōu)化了成形砂輪廓形。 3.分析了轉(zhuǎn)子齒廓銑削、磨削工藝和磨削產(chǎn)生的齒廓誤差,提出了一種針對齒廓誤差的專用補(bǔ)償方法。通過實際加工驗證了該補(bǔ)償方法的可靠性,并將該誤差補(bǔ)償方法應(yīng)用于轉(zhuǎn)子原始型線的調(diào)整,修正了轉(zhuǎn)子原始測量誤差和部分設(shè)計缺陷,優(yōu)化了部分轉(zhuǎn)子型線和壓縮機(jī)綜合性能。 4.開發(fā)了一套螺桿壓縮機(jī)轉(zhuǎn)子磨削計算軟件,進(jìn)行了轉(zhuǎn)子虛擬仿真加工與現(xiàn)場試驗,驗證了本文理論的正確性。
[Abstract]:Screw compressor is widely used in various industrial fields because of its stable high speed performance, multiphase mixing, stable exhaust and easy operation and maintenance.In the manufacturing process of screw rotor, the core component of screw compressor, the shape of the rotor is complex, the helical surface is difficult to be formed, the manufacturing precision is not easy to guarantee and so on.The research of its forming principle and precision manufacturing technology has been an important research topic in the development of the industry.With the development and close combination of computer science and mechanical engineering, modern manufacturing technology has been developed rapidly, and a large number of special screw rotor numerical control equipment and auxiliary software have appeared, but its core technology is still mastered by foreign countries.Although our country has made great progress in the field of rotor manufacturing, there is still a big gap compared with the leading technology in the world, which mainly shows that the machining efficiency is low, the precision is not high and the precision retention is poor.Under this background, this paper revolves around "the key technology of screw compressor rotor tooth profile grinding", with the goal of realizing high efficiency and high precision grinding of precision, special-shaped and complex screw rotor.The following aspects have been studied in detail:1.Based on the helical surface forming principle, a mathematical model of the contact condition between the rotor helical surface and the grinding wheel is established.On the basis of the numerical analysis of the actual profile of the rotor, a cubic spline curve with cumulative chord length parameters is introduced to solve the first order derivative of each type value point on the rotor end profile line, and the problem of large deflection of the type value point is solved.2.The mathematical model of the profile of the shaped grinding wheel for rotor tooth profile grinding is solved. The numerical analysis method is applied to the profile of the rotor end face and the axial section of the formed grinding wheel. The profile of the formed grinding wheel is evaluated and optimized by two dimensional and three dimensional interference inspection methods.3.The tooth profile error caused by rotor tooth profile milling, grinding technology and grinding is analyzed, and a special compensation method for tooth profile error is proposed.The reliability of the compensation method is verified by practical machining. The error compensation method is applied to the adjustment of the original profile of the rotor, and the original measuring error and some design defects of the rotor are corrected.The comprehensive performance of partial rotor profile and compressor is optimized.4.A set of calculation software for rotor grinding of screw compressor is developed. The virtual simulation and field test of rotor are carried out, and the correctness of this theory is verified.
【學(xué)位授予單位】：廈門大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TG580.6;TH45

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