本文關(guān)鍵詞： 新一代GPS規(guī)范 軸承零件 形狀誤差評(píng)價(jià) 快速幾何逼近算法　出處：《河南科技大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：軸承零件的形狀誤差是影響軸承旋轉(zhuǎn)精度的重要技術(shù)指標(biāo)。第一代GPS標(biāo)準(zhǔn)對(duì)產(chǎn)品的幾何定義存在諸多問題,已不能很好的滿足制造業(yè)的需求,更為科學(xué)的新一代GPS的制定和實(shí)施勢(shì)在必行。本文基于新一代GPS標(biāo)準(zhǔn),以軸承回轉(zhuǎn)體零件形狀誤差為主要研究對(duì)象,探究了形狀誤差的描述方法。結(jié)合空間直線度和圓柱度誤差的幾何特征,給出了直線度和圓柱度誤差評(píng)定的快速幾何逼近算法。 論文分析了新一代GPS的基本定義和理論框架,基于新一代GPS標(biāo)準(zhǔn)給出了常見軸承回轉(zhuǎn)體零件的規(guī)范方法。通過對(duì)比分析可知,以計(jì)量學(xué)為基礎(chǔ)的新一代GPS標(biāo)準(zhǔn)實(shí)現(xiàn)了產(chǎn)品整個(gè)生產(chǎn)周期的統(tǒng)一規(guī)范,對(duì)整個(gè)生產(chǎn)過程的資源配置進(jìn)行了統(tǒng)籌優(yōu)化,提供了清晰的幾何公差定義體系,從而助力了提高產(chǎn)品質(zhì)量和降低生產(chǎn)成本。 論文基于新一代GPS標(biāo)準(zhǔn)提出了空間直線度和圓柱度的誤差評(píng)定的快速幾何逼近算法,并分別探究了算法的求解過程�？臻g直線是除球體之外所有回轉(zhuǎn)體零件的回轉(zhuǎn)中心和測(cè)量、評(píng)定的參考要素,其空間位置的確定和誤差評(píng)定算法是形狀誤差評(píng)定中必須解決的關(guān)鍵問題。圓柱因其加工方便、加工成本相對(duì)較低,且具有比較好的綜合性能,在軸承滾子和套圈中得到了廣泛的應(yīng)用。因此,選定空間直線度和圓柱度作為研究對(duì)象。 通過算法評(píng)定結(jié)果和三坐標(biāo)測(cè)量機(jī)給出結(jié)果的對(duì)比,證明了該算法可以快速準(zhǔn)確求解空間直線度和圓柱度誤差值。為空間直線度和圓柱度誤差的評(píng)價(jià)提供了一種新的實(shí)用算法,同時(shí)該算法原理可以在其它形狀誤差的評(píng)定中進(jìn)行推廣,為其他形狀誤差評(píng)定提供了新的思路。
[Abstract]:The shape error of bearing parts is an important technical index which affects the precision of bearing rotation. There are many problems in the geometric definition of products in the first generation GPS standard, which can not meet the needs of manufacturing industry. The formulation and implementation of a more scientific new generation of GPS is imperative. Based on the new generation of GPS standard, this paper takes the shape error of bearing rotary parts as the main research object. Based on the geometric characteristics of spatial straightness and cylindricity error, a fast geometric approximation algorithm for evaluating straightness and cylindricity error is presented. In this paper, the basic definition and theoretical framework of the new generation GPS are analyzed. Based on the new generation GPS standard, the standard methods of the common bearing rotary parts are given. The new generation of GPS standard based on metrology realizes the unified specification of the whole production cycle, optimizes the resource allocation of the whole production process, and provides a clear definition system of geometric tolerance. This helps to improve the quality of products and reduce production costs. Based on the new generation of GPS standard, this paper presents a fast geometric approximation algorithm for the error evaluation of spatial straightness and cylindricity. The spatial straight line is the reference element for the measurement and evaluation of all parts except the sphere. The determination of spatial position and the algorithm of error evaluation are the key problems in shape error evaluation. Because of its convenient processing, relatively low processing cost, and better comprehensive performance. It has been widely used in bearing roller and ring. Therefore, spatial straightness and cylindricity are selected as research objects. The results are compared with those of CMM. It is proved that the algorithm can quickly and accurately solve the spatial straightness and cylindrical error, and provide a new practical algorithm for the evaluation of spatial straightness and cylindricity error. At the same time, the principle of the algorithm can be extended to other shape error evaluation, which provides a new idea for other shape error evaluation.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH133.3

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