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class="featurette-divider"> <!-- 中部开始 --> <div class="container"> <!-- 正文 --> <div class="lead" id="print"> <p>主轴是<a href='http://www.bethel-cnc.com/' target='_blank'>机床</a>的主要零部件之一。一切作回转运动的零件，都必须靠轴来传递运动和 动力。因此轴的主要功用是支撑回转零件及传递运动和动力。数控平面钻床液压进给钻 削动力头的主轴作为钻削加工的工作主体，它的结构尺寸、形状和材料，对钻削动力头 的工作性能都有很大的影响。主轴的设计也和其他零件的设计相似，包括结构设计和工 作能力计算量方面的内容。钻削动力头主轴的结构设计是根据轴上零件的安装，定位以 及轴的制造工艺等方面的要求，合理地确定轴的结构形式和尺寸。轴的结构设计不合理， 会影响主轴的工作能力和轴上零件的工作可靠性，还会增加主轴的制造成本和轴上零件 装配的困难等。<br /> 主驱动系统的设计<br /> 主轴通过集成的内装西门子宽调速交流主伺服电机驱动，主伺服电机主要由心轴、 转子、定子、水套组成，心轴和转子通过过盈配合连接，并通过端盖及支撑轴承与定子 和水套连成一体，形成交流主伺服电机单元，交流主伺电机单元再通过水套外径与滑枕 壳体上方的圆孔配合及端盖上的安装螺丝与滑枕壳体连接在一起。电机转速的检测采用 安装在电机上的微型齿型编码器检测，编码器的齿轮套通过锁紧螺母压紧固定在电机器 的芯轴上，测头通过螺钉固定在电机的端盖上，电机水套中通过恒温冷却水对电机进行 冷却，电机的输出轴通过外齿轮与变速箱内齿轮连接，传递电机的动力。<br /> 电机扭矩是通过长的空心轴传到齿轮变速箱。变速箱为双级行星齿轮变速箱。变速 箱的安装是通过变速箱的外径与滑枕壳体的内孔配合，并通过主伺服电机单元压紧及径 向定位销定位实现。变速箱分两档转速控制，速比为3和18,输出转速最髙为3150r/min， 扭矩最大2400Nm，变速箱的润滑和冷却采用恒温冷却油循环润滑和冷却。变速箱的输 出通过渐开线花键传到动力输出轴，在动力输出轴上装有轴位置分度控制的齿型编码 器。<br /> 动力输出轴端内齿轮通过连接体与作业部件附件头外齿轮离合，将滑枕的动力传到 附件头中。附件头连接结构见：的外轮廓是末端的局部截面，连接体为筒状，其末端开口为大径凹缘，凹缘端面有孔，定心短锥套固定在端面孔内滑枕中连接结构采用短锥套 定心，两个楔形键传递铣削扭矩，动力输出轴与附件头连接结构为同心结构，壳体、连 接体、输出轴和内冷却水管由外向内依次同轴设置，连接体上端有轴承支撑着动力输出 轴，动力输出轴内孔轴承支撑着位于轴心的内冷却水管。连接时附件头尾部伸入滑枕装 置内部，动力输出轴通过内外齿离合，将滑枕的动力传到附件头，由动力输出轴驱动附 件头上的刀具旋转。<br /> 釆用动平衡设计，主轴结构设计上摒弃了不平衡的设计因素，例如：轴上零件釆用 无键（包括螺纹结构）联结设计，主轴为前后两端式冷装联结，对称结构设计；装配前 主轴动平衡。</p></div> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a href='/index.php?case=tag&act=show&tag=%E5%8A%A0%E5%B7%A5%E4%B8%AD%E5%BF%83' target='_blank'>加工中心</a> <!-- 分类 --> <div class="blank10"></div> 分类： <a href='/bethel/type/jnc/type-1.html' target='_blank'>加工中心</a> <div class="blank30"></div> <!--自动调用自定义字段--> <div class="blank20"></div> <div class="blank30"></div> <!-- 投票 --> <script src="/index.php?case=vote&act=view&aid=1340"></script> <!-- 自定义表单开始 --> <!-- 自定义表单结束 --> <div class="blank60"></div> <!-- 上下页开始 --> <div id="page"> <strong>上一篇</strong><a href="/bethel/news/show_1339.html">GTM500200车铣加工中心滑枕的设计方案</a> <div 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text-decoration:none; display:block;} .izl-rmenu .btn-skype{background:url(/template/CmsEasy_V_408/skin/images/servers/metro_color/r_skype.png) 0px 0px no-repeat; background-color:#FF69B4;} .izl-rmenu .btn-skype:hover{background-color:#8B008B;} .izl-rmenu a.btn-skype,.izl-rmenu a.btn-skype:visited{background:url(/template/CmsEasy_V_408/skin/images/servers/metro_color/r_skype.png) 0px 0px no-repeat; background-color:#FF69B4; text-decoration:none; display:block;} .izl-rmenu .btn-web{background:url(/template/CmsEasy_V_408/skin/images/servers/metro_color/r_web.png) 0px 0px no-repeat; background-color:#008a46;} .izl-rmenu .btn-web:hover{background-color:#00663a;} .izl-rmenu a.btn-web,.izl-rmenu a.btn-web:visited{background:url(/template/CmsEasy_V_408/skin/images/servers/metro_color/r_web.png) 0px 0px no-repeat; background-color:#008a46; text-decoration:none; display:block;} .izl-rmenu .btn-top{background:url(/template/CmsEasy_V_408/skin/images/servers/metro_color/r_top.png) 0px 0px 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