对称曲面仿形抛光机构关键控制方法  

Pivotal Control Method of Copying Polishing Mechanism for Symmetrical Structure

作　　者：牛秦华 淮文博[1] 王旭辉[1] 南倩 NIU Qinhua;HUAI Wenbo;WANG Xuhui;NAN Qian(National Experimental Demonstration Teaching Center for Engineering Training,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学国家级工程训练实验示范教学中心,陕西西安710048

出　　处：《机械制造与自动化》2021年第3期41-43,57,共4页Machine Building & Automation

基　　金：国家级大学生创新创业训练项目(251051906)。

摘　　要：针对对称曲面结构体型面复杂、型面信息读取困难、抛光力难以精准控制等问题,设计一种对称结构仿形抛光装置。该装置可通过调整施加在活塞模块上的载荷来控制抛光力,采用倒“Y”形的“活塞-连杆-滚轮-导轨”结构实现对称结构仿形抛光;建立切除量数学模型;分析施加载荷、抛光砂带线速度与材料切除量的变化规律;提出采用速度驻留模式来控制进给速度及抛光力。抛光试验结果表明,该装置能获得合格的抛光质量,所设计机构及所建模型是可靠的。A copying and polishing device for symmetrical stucture was designed to solve the defects of complex symmetrical surface whose information is difficult to read and polishing force hard to control accurately.To achieve the copying polishing of symmetrical stucture,polishing force was controlled by adjusting the load applied to the piston module and the“iston-connecting rod-idler wheel-guide raid”stucture inverted in the shape of Y was adopted.The mathematical model of the material removal was established.The change rule of applied load,linear velocity of polishing abrasive belt and material removal were analyzed.The velocity resident mode to control feed speed and polishing force was put forward.The polishing experiment results indicate that the device can achieve qualified polishing qualitquality,and the mechanism and model prove reliable.

关 键 词：对称曲面 仿形抛光装置 材料切除 表面粗糙度 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]