基于十字滑块的具有容差能力的螺钉拆卸工具设计  

Design of Screw Removement Tool with Misalignment Adjustability Based on Cross Slipper

作　　者：高文锐 孙奎[1] 金明河[1] 

机构地区：[1]哈尔滨工业大学机器人技术与系统国家重点实验室,黑龙江哈尔滨150001

出　　处：《机械与电子》2014年第9期10-14,共5页Machinery & Electronics

基　　金：国家973计划资助项目(973-2013CB733103);新世纪优秀人才支持计划资助(NCET-10-0058)

摘　　要：螺钉拆卸工具是空间在轨服务中常用的一种工具,基于十字滑块的位置补偿功能,设计了一种具有容差能力、可针对不同规格圆柱头螺钉进行操作的螺钉拆卸工具,并着重对十字滑块、校正片弹簧以及工具整体的动态响应性能进行了设计与分析。首先对十字滑块机构的运动特点进行了系统分析;接着利用有限元软件参数化设计方法确定了校正片弹簧尺寸参数并拟合出刚度曲线;再利用动态仿真软件验证了工具的径向动态响应性能的快速性和平稳性,并将其与安装相同当量刚度圆柱弹簧的工具进行性能比较。十字滑块的使用使螺钉拆卸工具具有一定的容差能力,提高了工具设计的紧凑性,扩展了工具在航天领域的使用范围。Screw removement tool（SRT）is a frequently-used tool in the on-orbit servicing.Based on the cross slipper,an automatic SRT is designed in the paper,which has the misalignment adjustability and can operate hexagonal socket screw of different sizes,especially focusing on the design of cross slipper,arch flat spring and the analysis about the dynamic response of SRT.Firstly,the motion characteristic of cross slipper are analyzed.Then,through parameter design and contact analysis with FEA software,analyze and optimize the effect on performance of arch flat spring from the variables,acquire the stiffness fitting curve and validate the rationality of the selected parameter.Through importing the stiffness curve to ADAMS,the response rapidity and stability of the SRT are validated and compared with the SRT mounted with the cylindrical spring.The application of the cross slipper endows the SRT with a certain misalignment adjustability,and greatly enhances the compactness of the grapple interface,which expands applied range of tools in the aerospace field.

关 键 词：螺钉拆卸工具 十字滑块 容差能力 在轨服务 校正片弹簧 

分 类 号：TH122[机械工程—机械设计及理论] TH128