机械5

THC56631AN系列数控机床主传动系统结构设计 摘要 主传动系统作为数控机床设计中的首要组成部分，它的准确性对后续的合理布局尤为重要。本案设计由题目所给定的基本参数为切入点，首先计算出准确级数，然后进行结构式及传动比的优化分配，再延伸到齿轮和传动轴的设计，合理选取各类主传动配合件，以及对轴和齿轮及其配合件的校核，绘制合理的主传动系统展开图、装配图和零件图，侧重进行变速机构、主轴组件、刀具自动夹紧及吹屑装置、滑移齿轮和密封装置的设计，完成设计任务。 本次设计突出了结构设计的要求，在保证机床的实用性和运动特性下，根据机床设计的基本原则，拟定结构式及结构网，对机床的结构进行优化，力求降低生产成本。主轴和齿轮设计在满足强度需要的前提下，材料的选择也是采用经济、合理的原则，从而避免材料的浪费。 关键词主传动系统；加工中心；分级变速器；主轴组件 Abstract Mai
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nit 目录 摘要I Abstract II 1绪论1 1.1课题背景及意义1 1.2国内外研究现状及发展趋势1 1.3课题设计内容及方法3 1.4课题设计步骤及要求3 2 THC56631AN数控机床主传动系统设计6 2.1主传动系统概述6 2.2主传动系统的参数7 2.3主传动系统的运动设计8 3 THC56631AN机床传动部件的设计16 3.1各传动轴计转速的确定16 3.2各传动轴轴径的估算16 3.3带轮的设计18 3.4键的选择与设计21 4主轴组件结构设计23 4.1主轴组件的基本要求23 4.2主轴24 4.3主轴基本尺寸的确定25 4.4主轴轴承的选择26 4.5主轴端部的结构形式28 4.6刀具自动夹紧和切削清除装置设计30 4.7编码器的选择与安装30 5传动件校核32 5.1传动轴的校核32 5.2齿轮的校核37 5.3滚动轴承的校核40 结论43 致谢44 参考文献45 附录A 46 附录B 57