摘要
针对汽车检测工具主模型薄壁部分切削加工过程中工件容易变形的问题,设计了薄壁件加工防变形夹具,利用浮动的辅助支撑杆对工件进行支撑,可以在磁流变液浮力的作用下与工件表面自适应贴合。设计了真空吸盘和定位装置对工件夹紧与定位,滑动定位装置可实现夹具在空间区域进行定位,采用真空吸盘装置的夹紧方案可以快速更换加工工件,不影响表面加工质量且方便稳定。柔性体现在夹具能够自适应调整以适用于不同类型主模型薄壁件的切削加工,从而节省夹具的制造成本。利用计算机辅助软件算出夹紧点的合理位置,能保证工件在加工中不产生位移和变形;利用磁流变液锁紧装置可快速改变辅助支撑杆的松紧状态;提高了工件的装夹效率,节省工时,实现加工要求。
Aiming at the problem that the workpiece is easily deformed during the cutting process of the thin-wall part of the main model of the automobile inspection tool,the main model thin-walled part processing anti-deformation fixture is designed,and the floating auxiliary support rod is used to support the workpiece,which can be buoyant in the magnetorheological fluid.Under the action,it is adaptively fitted to the surface of the workpiece;the vacuum chuck and positioning device are designed to clamp and position the workpiece.The sliding positioning device can realize the positioning of the fixture in the space area.The clamping scheme of the vacuum chuck device can quickly replace the workpiece.It does not affect the surface processing quality and is convenient and stable;the flexibility is embodied in the fixture can be adaptively adjusted to suit the cutting process of different types of main model thin-walled parts,thereby saving the manufacturing cost of the fixture.Using computer-aided software to calculate the reasonable position of the clamping point,can ensure that the workpiece does not produce displacement and deformation during processing;the magnetorheological fluid locking device can quickly change the elastic state of the auxiliary support rod;improve the clamping efficiency of the workpiece,save man-hours and meet processing requirements.
作者
程齐
方喜峰
章振
支含绪
张胜文
CHENG Qi;FANG Xifeng;ZHANG Zhen;ZHI Hanxu;ZHANG Shengwen(School of Mechanical Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,CHN)
出处
《制造技术与机床》
北大核心
2020年第10期133-136,共4页
Manufacturing Technology & Machine Tool
基金
国防基础科研基金资助项目(A0720133010)。
关键词
柔性夹具
薄壁件
防变形
切削加工
flexibleclamp
thin-walled parts
anti-deformation
cutting
