步进输送机课程设计说明书.doc

机械原理课程设计说明书 ——————步进输送机 系 别： 机电工程系 专 业： 计算机辅助设计与制造 班 级： 设 计 者： 辅导老师：  前言 人们在长期的生产实践和社会生活中，为了节省劳动，提高效率，不断改进所使用的工具从而创造和发明了机械和机械科学。然而在当今社会，使用机器进行生产的水平已成为衡量一个国家生产技术水平和现代化程度的标志之一。其中机械设计扮演着很重要的角色。 本书以市场为导向，采用详图详解的方式对步进输送机进行精刨，通俗易解。为业余爱好者及商家提供了解的平台。通观总过程，设计本着以下原则： 满足功能性要求：机械设计的目的就是要实现预定的目标，本设计也步例外，经过对数位著名教授所编书籍的精读，确定最终方案。 满足可靠性要求：为不使机械在于预期时间内发生破坏、零件过度磨损、变形而导致失效，强烈的震动和冲击而损坏机器的工作性能，为保证人身和财产安全，对机械的整体设计及零部件的强度设计都做了严格的要求。 满足经济要求：机械产品的经济体现在设计、制造、销售和使用的全过程，产品的成本很大程度上取决于设计阶段。本设计在保证机器质量的前提下，降低了原材料的消耗；在满足要求的前提下，采用了价格低廉的原材料；采用标准零部件，并充分考虑其工艺性以减少加工成本。 编者 2009-12-25 目 录 一、 步进输料机的主要设计过程································4 二、 步进输料机结构简图··········································4 三、 设计简述 ·························································4 3.1 工作原理 ·····················································4 3.2 传动方案 ·····················································5 3.3 设计要求 ····················································6 四6 4.1 直齿齿轮分析················································6 4.1.1 精度分析········································7 4.1.2齿轮副的侧隙分析·····························9 4.1.3 受力分析········································9 4.1.4 载荷分析·······································11 4.1.5 齿面接触疲劳强度计算····················12 4.1.6 齿根弯曲疲劳强度计算····················13 4.2 V带传动分析···············································15 4.2.1 带传动受力分析·····························15 4.2.2 带出动的传动比·····························17 4.3 凸轮机构及其设计·······································19 4.3.1 强等加速减速运动规律···················19 4.3.2 用解析法设计盘型凸轮轮廓·············21 4.3.3 滚子直动从动件凸轮机构················22 4.4 轴的分析及其设计······································24 4.4.1 轴的概述······································24 4.4.2 提高轴刚度和强度的措施················25 五、 自我评价························································28 六、 参考书籍························································29 七、 附图······························································29 一、步进