摘要
为提高模具自由曲面抛光的效率和品质,提出一种基于柔性抛光理念的新型气囊抛光技术。建立相应的机器人抛光系统,研究旋转型膨胀气囊抛光工具及抛光过程中各因素对抛光表面粗糙度的影响。对气囊抛光工具的位置和姿态控制问题以及抛光工具,以一定下陷深度和倾斜角度与被抛工件接触时的接触区域的相关特性进行分析。在机器人抛光系统上进行抛光正交试验和试验数据分析,获取表面粗糙度的不同影响因数的最优参数组合,试验中被抛光曲面平均表面粗糙度达到了0.007μm。研究结果表明,气囊抛光技术可实现抛光工具与被抛光工件的大面积柔性接触,通过气囊内部气压的调节和机器人抛光系统对抛光工具的运动轨迹和姿态的精确控制,可有效地提升自由曲面抛光的品质和效率。
A novel gasbag polishing technique based on flexible polishing principle is proposed for obtaining high polishing efficiency and well-proportioned surface quality of free-form mold. The information about gasbag polishing technique is discussed, such as automated robotic polishing system, spin- ning-inflated-gasbag polishing tool, various influence factors of surface roughness, etc. Also, in polishing process, the control of position and pose of the gasbag polishing tool and the char- acteristics of contact area when the rubber gasbag is pressed against the work-piece in a certain downward depth and obliq- uity are studied and analyzed. Regression orthogonal experi- ment research and theoretical analysis are based on the estab- lished automated robotic polishing system. The optimal pa- rameters combination of different influence factors of surface roughness after the regression orthogonal experiment is given and the best average value of surface roughness 0.007 ~tm is obtained. Through a mass of experiment research, it is proved that gasbag polishing technique can enhance the stability, effi- ciency and quality of polishing effectively for the advantages of large flexible contact area between the polishing tool and work-piece, controllable pressure of the rubber gasbag, reliable movement accuracy of the automated robotic polishing system, tiny wiped off process of the mould surface, and so on.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2007年第8期2-6,共5页
Journal of Mechanical Engineering
基金
国家自然科学基金(50575208)
浙江省自然科学基金(M503099)
关键词
气囊抛光技术
机器人抛光系统
抛光工具
接触区域
表面粗糙度
Gasbag polishing technique Robotic polishing system Polishing toolContact area Surface roughness
