本科论文目录摘要.............Abstract引言.1风电变桨轴承概述21.1风电变桨轴承简介…21.2风电变桨轴承的基本结构21.3风电变桨轴承国内外研究现状.1.4风电变桨轴承工艺设计研究目的与意义1.5论文的主要研究内容2零件分析2.1结构分析72.2工艺分析82.3技术要求分析122.4轴承内外圈毛坯料选择173工艺规程设计193.1基准选择3.2制定工艺路线204确定切削用量及进给量相关计算274.1外圈车加工相关计算274.2外圈孔加工相关计算284.3内圈车加工相关计算294.4内圈铣齿相关计算304.5内圈孔加工相关计算32参考文献33附录2源程序清单35致谢…40本科论文摘要随着中国风电行业迅速的发展，风电对轴承使用的要求提高也是必然的，而风电属于一种特殊的轴承，其使用环境恶劣，需要高维修成本，要求高寿命。风电轴承较高的技术复杂度使其成为风电行业公认的国产化难度最大的两个部分之一。为了打破这一局面，中国各轴承行业经过产业逐渐形成的规模化，系统化，关键技术不断突破，中国风电轴承产品技术和质量上有了一定的突破性。2447滚动体为70mm的钢球，为非国标件，应用于风力发电机的叶片部位，调整叶片的方向，使得能够更好的与风向吻合，提高发电效率，2447为轴承径向一端钢球中心到另一端钢球中心的距离为2447mm,变桨轴承的受力情况复杂，而且轴承承受的冲击和振动比较大，因此，要求轴承既能承受冲击，又能承受较大载荷。所以对于硬度，载荷，硬化层深度要求比较高，东方电气2447风电变桨轴承内外圈加工工艺采用表面淬火后硬度2447采用表面淬火后硬度外圈为57~63HRC,内圈为53一60HRC,外圈硬化层深度要求大于6.7，内圈硬化层要求齿面>2.2，齿根>1.2。由于其应用的环境较为普通轴承更为恶劣，所以其对于防腐工艺的要求也比较高，需经过喷锌，喷砂，喷漆处理，以满足其使用要求山。关键词：风电变桨轴承：工艺：优化：工序：本科论文AbstractWith the rapid development of China's wind power industry,it is inevitableto improve the requirements of wind power for the use of bearings.Wind powerbelongs to a special bearing,which has a bad use environment,highmaintenance cost and high life.The high technical complexity of wind powerbearing makes it one of the two most difficult parts of localization recognized bywind power industry.In order to break this situation,China's bearing industryhas gradually formed a large-scale,systematic and key technology breakthrough,and China's wind power bearing product technology and quality has a certainbreakthrough.2447Scroll as 70mm The steel ball of is a non-national standardpart,which is applied to the blade part of the wind turbine to adjust the directionof the blade,so as to better match the wind direction and improve the powergeneration efficiency,two thousand four hundred and forty-seven The distancefrom the ball center at one radial end of the bearing to the ball center at the otherend is 2447mm The force of the pitch bearing is complex,and the bearing bearslarge impact and vibration It is required that the bearing can not only bearimpact,but also bear large load.Therefore,the requirements for hardness,loadand hardening layer depth are relatively high two thousand four hundred andforty-seven The hardness of the inner and outer rings of the wind turbine pitchbearing after surface quenching two thousand four hundred and forty-seven Thehardness of outer ring after surface quenching is 57~63 HRC,inner circle is5360HRC,the outer ring hardening layer depth is required to be greater than6.7mm,inner ring hardening layer required tooth surface =2.2mm,dedendum1.2mm.Because the application environment of the bearing is worse thanthat of the common bearing,the requirements for the anticorrosion process arealso higher,which need to be treated by zinc spraying,sand blasting andpainting to meet the use requirements.Keywords:Wind turbine pitch bearing;process;optimization;process