五步自动进给钻床的设计.docVIP

目 录 摘 要 ···············································································2 第一章 绪论·····································································1 第二章 设计方案·······························································2 2.1 机床的主传动系统·······················································2 2.2 机床的进给运动··························································3 第三章 机械传动系统的设计···············································5 3.1 传动系统的作用，类型及组成··········································5 3.2 分级变速传动系统的运动设计·······································8 第四章 运动设计及校核····················································13 4.1 钻削轴向力，扭矩和功率·············································13 4.2 变速箱传动系统的设计················································14 4.2.1 V带及带轮的设计···················································14 4.2.2 齿轮传动的设计···················································18 4.3 进给箱传动系统设计·················································23 4.3.1 齿轮，齿条的参数设计············································23 4.3.2 蜗轮，蜗杆传动设计················································24 4.3.3 塔轮的设计·························································25 第五章 主要结构设计·······················································27 第六章 毕业设计总结·······················································29 参考文献············································································30 程序··················································································31  摘 要 随着社会的不断发展，对机械加工产品的质量和生产率的要求越来越高。机械加工过程的自动化是实现这个要求的主要措施。自动化生产广泛采用自动机床、组合机床和专用机床以及自动生产线，以实现高自动化和高效率。 对于钻削加工，目前国内所采用的钻床仍然为普通钻床。这种钻床的特点是手动进给，进给速度由手动控制。这样一方面难以实现高效率的自动化生产，另一方面，工人劳动强度较大，加工质量也难以保证。另外，对于某些有进给量要求的加工，例如在进行钻削加工实验时，要研究进给量的影响规律，采用现有的普通钻床则无法实现。本次设计的五级自动进给钻床，则可以满足上述要求。 针对这个毕业设计课题，主要进行了以下设计工作： 1）主运动系统的设计。包括主运动转速设计，运动传递、装配结构设计、带轮、传动齿轮等零件的设计和电机选择。 2）进给运动系统的设计。包括进给量的设计、进给运动设计、蜗轮、蜗杆和齿轮、齿条等零件设计。 3）机床整体结构的设计。包括主轴箱、进给箱、升降机构、工作台等的设计。 在设计过程中，充分考虑了机床的经济性、工艺性和实用性等要求，选择了较佳的方案，达到了较佳的效果。 Abstract W