Process planning and contour-based error compensation for precision grinding of miniature scalpels  

作　　者：Cheng Fan Cao-Yang Xue Jun Zhao Wei Jiang Wen-Ge Han Lei Zhang Li-Ning Sun 

机构地区：[1]Jiangsu Provincial Key Laboratory of Advanced Robotics,School of Mechanical and Electrical Engineering,Soochow University,Suzhou,215021,Jiangsu,People’s Republic of China [2]Key Laboratory of Fluid Power and Mechatronic Systems,School of Mechanical and Electrical Engineering,Zhejiang University,Hangzhou,310027,People’s Republic of China [3]State Key Laboratory of Intelligent Equipment and Manufacturing,School of Mechanical Engineering,Zhejiang University of Technology,Hangzhou,310023,People’s Republic of China

出　　处：《Advances in Manufacturing》2024年第1期108-123,共16页先进制造进展（英文版）

基　　金：funded by the National Key Research and Development Program of China(Grant No.2021YFB3400300);the National Natural Science Foundation of China(Grant No.51975392).

摘　　要：Miniature scalpels are mainly used in microsurgeries such as ophthalmic and cardiovascular surgeries.The size of a miniature scalpel is only a few millimeters,and the precision of the blade shape is high,which makes production of miniature scalpels extremely difficult.This study proposes a new sharpening process for grinding miniature scalpels on a four-axis machine tool.A post-processing algorithm for a four-axis grinding machine based on a kinematics model is established.We then propose a corresponding parameter calibration method for the parameters used in the kinematics model.Because of possible errors in the parameter calibration,a contour-based error compensation method is proposed for accurate adjustments to the edge shape following grinding.This can solve the problem of large deviations between the actual edge shape after grinding and the ideal edge shape.The effectiveness of the proposed process planning and error compensation method is verified experimentally,and the grinding process parameters of the miniature scalpel are optimized to improve its surface processing quality.The sharpness of the optimized miniature scalpel is less than 0.75 N,and the blade shape is symmetrical,which meets the technical requirements of miniature scalpels.

关 键 词：Miniature scalpel SHARPENING KINEMATICS Error compensation GRINDING 

分 类 号：TH77[机械工程—仪器科学与技术]