益智循迹机械小车说明书.docVIP

装 订 线 2012国家级大学生创新创业计划 益智循迹机械小车 设计说明书 设计： 指导老师： 二〇一三 年 六 月 摘要 本设计以机械能为动力源，设计开发一种可以按一定轨迹行进的机械小车，通过机械装置的调整与操作可直观的展示机械能量转化、能量守恒、机械传动原理的奥秘，开发智力，培养其对机械设计的兴趣。 根据益智循迹机械小车基本功能，将其分为能量转换机构、传动机构、转向机构、微调机构四个模块进行设计开发。能量转换机构采用了发条、绕线轮的结构组成，将弹簧的弹性势能转化为动能驱动小车运动；传动机构采用了直齿圆柱齿轮传动，并基于齿面接触疲劳强度、齿根弯曲疲劳强度对齿轮的有关参数设计，同时为了降低成本，在设计的过程中，利用UG软件对齿轮进行了运动仿真；转向机构是小车设计的核心，采用齿轮+凸轮的传动方案控制小车转向，完成避障行走；微调机构采用螺母、丝杠的微调方案弥补零件加工、装配的误差，从而使益智循迹机械小车达到按照预定的轨迹避障行走、找到最佳起跑点的目的 使用者通过观察样机的工作原理，并亲手调试，改变小车的可调变量，观察其行走规律，从而以游戏的形式锻炼了操作者的动手能力，使人们获得身心健康，增强自身的逻辑分析能力，和思维敏捷性。而且娱乐性也十分强。 关键字：益智 微调机构 转向机构 传动机构 Abstract The design of the mechanical energy as a power source, mechanical design and development of a car can travel in a certain path, through the adjustment and operation of mechanical device can directly display the mechanical energy conversion, energy conservation, mechanical transmission principle of mystery, intellectual development, cultivate interest on its mechanical design. According to the basic function of educational tracking machinery trolley, which is divided into the energy conversion mechanism, transmission mechanism, turn to the four module mechanism, adjustment mechanism for design and development. The energy conversion mechanism adopts winding, the winding wheel structure, the elastic potential energy of the spring is converted to kinetic energy driving car movement; the drive mechanism adopts gear transmission, and based on the tooth surface contact fatigue strength, the parameter design of tooth root bending fatigue strength of gear, at the same time in order to reduce the cost, in the process of the design, to gear are simulated by using UG software; the steering mechanism is the core of car design, the transmission gear and cam control car steering, complete avoidance walking; adjustment mechanism by trimming nut, screw up program error parts processing, assembly, so that the puzzle tracking machinery trolley achieve according to a