1、内表面拉刀拉削拉削精度受到拉力本身精度、使用条件、使用拉床、工件形式、材料、加工前尺寸精度及工件夹持方法等的影响。 (1)圆拉刀拉削精度在内孔加工中,常常用拉削代替镗孔或铰孔。拉孔能达到的加工精度约为H_7。由于工件形状、材料和使用条件等不同,加工精度有很大差别。因此,拉刀校准齿尺寸以试拉方法来决定为佳。 1, the inner surface of the broach broaching Broaching precision by the pulling itself accuracy, conditions of use, the use of broaching tools, workpiece forms, materials, pre-processing dimensions and workpiece clamping accuracy of the impact of such methods. (1) Round Broach Broaching accuracy In the hole machining, often used broaching instead of boring or reaming. The processing precision that the hole can reach is about H_7. Due to the shape of the workpiece, the material and the use of different conditions, processing accuracy is very different. Therefore, broach calibration tooth size determined by trial and error method is better.