本文選題：特大型齒輪 + 離散模型��； 參考：《中國(guó)計(jì)量學(xué)院》2014年碩士論文

【摘要】：特大型齒輪主要用于重型機(jī)械傳動(dòng)和重大工程項(xiàng)目中，在國(guó)民經(jīng)濟(jì)和國(guó)防事業(yè)中發(fā)揮著不可替代的作用。目前，特大型齒輪的測(cè)量已經(jīng)成為我國(guó)各項(xiàng)重大裝備研制的制約因素。本文首先提出了基于齒面跟隨測(cè)量技術(shù)的特大型齒輪測(cè)量方法，然后在此框架下提出了漸開線圓柱齒輪離散模型的建模方法，并利用該模型對(duì)特大型齒輪測(cè)量中涉及的齒廓偏差評(píng)價(jià)問題進(jìn)行了研究。本文的研究?jī)?nèi)容主要有以下幾個(gè)方面： 1）提出了特大型齒輪的測(cè)量方案，包括基于齒面跟隨技術(shù)的特大型齒輪測(cè)量方法，基于激光跟蹤測(cè)量技術(shù)的齒輪坐標(biāo)系建立方法和基于離散模型的齒廓偏差評(píng)價(jià)方法三個(gè)方面，為后續(xù)研究提供了框架。 2）提出一種基于漸開線圓柱齒輪幾何原理的離散模型的構(gòu)建方法，確定了其在計(jì)算機(jī)中的存儲(chǔ)結(jié)構(gòu)，并提出了將齒輪連續(xù)模型離散化過程中選擇變量的方法及步長(zhǎng)的計(jì)算方法。 3）利用三坐標(biāo)測(cè)量機(jī)掃描測(cè)量了用作齒輪測(cè)量中心測(cè)量基準(zhǔn)的5級(jí)精度漸開線圓柱直齒輪和定制的12級(jí)精度漸開線圓柱直齒輪，得到了齒廓離散點(diǎn)的坐標(biāo)值；闡述了實(shí)測(cè)齒廓離散模型的建立方法。 4）在所建立漸開線圓柱齒輪離散模型的基礎(chǔ)上，研究了基于齒廓數(shù)據(jù)的齒輪截面圓心計(jì)算方法，并根據(jù)計(jì)算出的圓心對(duì)齒廓偏差進(jìn)行了評(píng)價(jià)，將評(píng)價(jià)結(jié)果同齒輪測(cè)量中心的測(cè)量結(jié)果進(jìn)行了比對(duì)，驗(yàn)證了算法的有效性。設(shè)計(jì)了基于離散模型的齒廓偏差評(píng)價(jià)方法仿真軟件，提高齒廓偏差評(píng)價(jià)方法的易用性和計(jì)算程序的整體性。 本文的研究結(jié)果對(duì)于促進(jìn)我國(guó)特大型齒輪制造和檢測(cè)能力的提高，，提升重型裝備的技術(shù)水平具有積極的意義。
[Abstract]:Super large gears are mainly used in heavy mechanical transmission and major engineering projects, and play an irreplaceable role in national economy and national defense. At present, the measurement of super-large gears has become a major equipment development constraints in China. In this paper, the measurement method of super large gear based on tooth surface following measurement technology is put forward, and then the modeling method of discrete model of involute cylindrical gear is presented in this framework. The model is used to evaluate the tooth profile deviation in the measurement of super large gears. The main research contents of this paper are as follows: 1) the measurement scheme of super large gear is put forward, including the measuring method of super large gear based on tooth surface following technology. The method of establishing gear coordinate system based on laser tracking measurement technology and the method of tooth profile deviation evaluation based on discrete model are discussed. A discrete model based on the geometric principle of involute cylindrical gear is proposed, and its storage structure in computer is determined. The method of selecting variables and calculating step size in the discretization process of gear continuous model are put forward. 3) the 5-level precision used as the measuring datum of measuring center of gear measurement is measured by CMM. Linear cylindrical spur gears and custom 12 grade precision involute cylindrical spur gears, The coordinate value of the discrete point of tooth profile is obtained, and the method of establishing discrete model of measured tooth profile is expounded. 4) based on the discrete model of involute cylindrical gear, the method of calculating the circle center of gear section based on tooth profile data is studied. The tooth profile deviation is evaluated according to the calculated center of the tooth. The effectiveness of the algorithm is verified by comparing the evaluation result with the measurement result of the gear measuring center. The simulation software of tooth profile deviation evaluation method based on discrete model is designed to improve the usability of tooth profile deviation evaluation method and the integrity of calculation program. The research results of this paper have positive significance for promoting the manufacturing and testing ability of super large gears in China and improving the technical level of heavy equipment.
【學(xué)位授予單位】：中國(guó)計(jì)量學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TH132.41

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