發(fā)布時(shí)間：2019-02-13 11:57

【摘要】：齒輪泵作為一種能量轉(zhuǎn)換裝置在國民經(jīng)濟(jì)中起著不可替代的作用。隨著社會的發(fā)展，人們對環(huán)保意識和能源危機(jī)的概念越來越強(qiáng)。傳統(tǒng)齒輪泵的低壓、流量脈動大、噪聲大、效率低等問題越來越突出。國外高壓螺旋轉(zhuǎn)子泵的出現(xiàn)給齒輪泵提供了一個(gè)新的發(fā)展方向。高壓螺旋轉(zhuǎn)子泵不僅繼承了傳統(tǒng)齒輪泵結(jié)構(gòu)簡單的優(yōu)點(diǎn)，而且擁有高壓、流量脈動小、低噪聲等優(yōu)點(diǎn)。然而國內(nèi)對高壓螺旋轉(zhuǎn)子泵的理論研究處于起步階段，缺乏一套完善的理論體系。本文就是以高壓螺旋轉(zhuǎn)子泵為研究對象，建立一套高壓螺旋轉(zhuǎn)子泵的轉(zhuǎn)子的型線設(shè)計(jì)原則、嚙合特性的分析、泵性能特性的分析、泵的結(jié)構(gòu)設(shè)計(jì)、轉(zhuǎn)子制造加工技術(shù)等較為完善的理論體系。 本文首先從嚙合齒面出發(fā)，確定了一點(diǎn)連續(xù)接觸的齒廓方程，很好的解決了傳統(tǒng)齒輪泵存在的困油現(xiàn)象。根據(jù)齒廓方程，建立了螺旋轉(zhuǎn)子的數(shù)學(xué)模型并理論推導(dǎo)了齒輪的嚙合特性，進(jìn)一步證明了轉(zhuǎn)子齒廓一點(diǎn)連續(xù)接觸的特征。然后對螺旋轉(zhuǎn)子泵進(jìn)行了詳細(xì)的特性分析，建立了泵腔和進(jìn)出油口的數(shù)學(xué)模型，理論推導(dǎo)出了泵的排量流量、進(jìn)出油口尺寸、徑向力和徑向力波動等參數(shù)公式，分析歸納出螺旋轉(zhuǎn)子泵3大特性：流量無脈動、齒輪軸的軸向力和扭矩恒定和徑向力大且存在波動。 在推導(dǎo)的螺旋轉(zhuǎn)子泵的理論基礎(chǔ)上，根據(jù)泵的技術(shù)指標(biāo)確定了螺旋轉(zhuǎn)子的齒輪參數(shù)和泵的性能參數(shù)（工作壓力25MPa、流量90.65L/min,流量脈動0%）。確定了泵的性能參數(shù)后完成了對泵的結(jié)構(gòu)設(shè)計(jì)，主要包括泵的整體尺寸設(shè)計(jì)和泵的主要組成零部件的ANSYS仿真分析。ANSYS仿真分析則包括泵體壁厚的優(yōu)化分析、主動齒輪軸的模態(tài)分析、齒輪軸的靜態(tài)分析和齒輪接觸分析。ANSYS仿真分析確定了泵體壁厚尺寸、主動齒輪軸的振動型式、齒輪軸危險(xiǎn)截面的應(yīng)力和變形、齒輪嚙合接觸的受力情況等，很好的驗(yàn)證了泵的結(jié)構(gòu)尺寸設(shè)計(jì)的可靠性。 針對螺旋轉(zhuǎn)子的特殊齒廓形狀，，本文專門對螺旋轉(zhuǎn)子的復(fù)雜加工刀具——銑刀和滾刀進(jìn)行了設(shè)計(jì)。以空間嚙合原理為基礎(chǔ)，設(shè)計(jì)推導(dǎo)銑刀的回轉(zhuǎn)面齒廓和滾刀的基本蝸桿，并分別對正前角銑刀廓形和正前角滾刀的前刀面齒形進(jìn)行了詳細(xì)的推導(dǎo)，完成了對銑刀和滾刀的齒形基礎(chǔ)理論工作。在理論計(jì)算齒形的基礎(chǔ)上完成對銑刀和滾刀的結(jié)構(gòu)尺寸設(shè)計(jì)并繪制出刀具工程圖。 為了更好的將螺旋轉(zhuǎn)子泵的研究簡潔化和通用化，本文建立了一套以MatlabGUI為平臺的適用于螺旋轉(zhuǎn)子泵及其復(fù)雜刀具設(shè)計(jì)系統(tǒng)功能軟件。系統(tǒng)軟件可完成齒輪參數(shù)設(shè)計(jì)、泵參數(shù)設(shè)計(jì)、齒輪刀具設(shè)計(jì)和數(shù)控加工刀軌規(guī)劃等工作，從而將螺旋轉(zhuǎn)子泵的整個(gè)設(shè)計(jì)研究有效串聯(lián)在一起。
[Abstract]:Gear pump as an energy conversion device plays an irreplaceable role in the national economy. With the development of society, the concept of environmental protection and energy crisis is becoming stronger and stronger. The problems of low pressure, large flow pulsation, high noise and low efficiency of traditional gear pump are more and more prominent. The appearance of high-pressure spiral rotor pump provides a new developing direction for gear pump. High pressure spiral rotor pump not only inherits the advantages of simple structure of traditional gear pump, but also has the advantages of high pressure, low flow pulsation and low noise. However, the theoretical study of high-pressure screw rotor pump is still in its infancy and lacks a perfect theoretical system. This paper takes the high pressure screw rotor pump as the research object, establishes a set of rotor profile design principle, meshing characteristic analysis, pump performance characteristic analysis, pump structure design of the high pressure screw rotor pump. Rotor manufacturing and processing technology and other more perfect theoretical system. In this paper, starting from the meshing tooth surface, the tooth profile equation of a point of continuous contact is determined, which solves the problem of oil trap in the traditional gear pump. According to the tooth profile equation, the mathematical model of the helical rotor is established and the meshing characteristics of the gear are deduced theoretically, which further proves the characteristics of the continuous contact of the rotor tooth profile. Then, the characteristics of the screw rotor pump are analyzed in detail, and the mathematical models of the pump cavity and inlet and outlet are established. The formulas of pump displacement, inlet and outlet size, radial force and radial force fluctuation are derived theoretically. Three main characteristics of the screw rotor pump are analyzed and summarized: no pulsation of the flow rate, constant axial force and torque of the gear shaft, large radial force and fluctuation. On the basis of the theory of the screw rotor pump, the gear parameters of the screw rotor and the performance parameters of the pump are determined according to the technical specifications of the pump (working pressure 25 MPA, flow rate 90.65 L / min, flow rate fluctuating 0%). After determining the performance parameters of the pump, the structural design of the pump is completed, including the overall size design of the pump and the ANSYS simulation analysis of the main components of the pump. The ANSYS simulation analysis includes the optimization analysis of the wall thickness of the pump body. Modal analysis, static analysis and gear contact analysis of the drive gear shaft. ANSYS simulation analysis determines the wall thickness of the pump body, the vibration type of the drive gear shaft, and the stress and deformation of the dangerous section of the gear shaft. The force of gear meshing contact is very good to verify the reliability of structural dimension design of pump. Aiming at the special tooth profile of spiral rotor, this paper designs the complex machining cutters-milling cutter and hob. Based on the principle of space meshing, the profile of rotary surface tooth of milling cutter and the basic worm of hob are designed and deduced, and the profile of positive angle milling cutter and the profile of front face tooth of positive angle hob are deduced in detail respectively. The basic theory of tooth profile of milling cutter and hob is completed. On the basis of theoretical calculation of tooth profile, the structural dimensions of milling cutters and hobs are designed and the tool engineering drawings are drawn. In order to better simplify and generalize the research of spiral rotor pump, a set of functional software based on MatlabGUI is established for the screw rotor pump and its complex tool design system. The system software can complete gear parameter design, pump parameter design, gear tool design and NC machining tool path planning, so that the whole design research of screw rotor pump can be effectively connected together.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH325

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