机械式可调扭矩螺丝刀的设计

Design on a Style of Adjusted-Mechanically Torque Screwdriver

传统常用紧固螺丝的工具往往会因施加的力矩过大造成螺丝、螺丝刀损坏,或因施加的力矩不同影响零件的安装或装配质量。针对这种局限性,提出了一种机械式可调扭矩螺丝刀的设计。通过选取小规格螺丝的装卸所需力矩为参数,论述了利用棘轮结构实现可调扭矩的工作原理,详细介绍了螺丝刀的工作过程及螺丝刀零件的设计和零件参数选择计算。通过实验表明,用这种机械式可调扭矩螺丝刀能使同一规格和场合的螺丝的紧固程度一致,也能较好保护螺丝和螺丝刀刀头。设计的螺丝刀有较好的应用价值和市场前景。

The traditional fastening tools or screws are easily damaged by the applied excessive moment since the moment is controlled by hand and the quality of installing or assembling is influenced even the screws can installed.A kind of mechanical adjustable torque screwdriver is designed and described.According to the small specification screw needed for loading and unloading of parameters,the use of ratchet structure to realize adjustable torque working principle is discussed.The working process of the screwdriver is described and screwdriver parts are designed and the parameters of parts are selected and discussed.It is shown that this kind of mechanical adjustable torque screwdriver can make the same fastening screw effect,also can better protect screw and screwdriver bit.The present designed screwdriver has a good application value and market prospect.