论文部分内容阅读
针对小孔内壁光整加工技术的难题,本文提出一种新型精密研磨孔光整加工技术,以磁致相变理论为指导,从微观角度阐述了液体磁性磨具研磨孔光整加工的材料去除机理.采用“双刃圆半径”模型进行单个磨料颗粒切削模型研究,得出小孔光整加工的材料去除率数学表达式.通过实验验证了磨料粒度、入口压力、电流强度等因素对材料去除率以及表面粗糙度的影响,实验结果表明:在合适的范围内,增大磨料颗粒直径、入口压力以及电流强度有利于提高材料的去除率和表面质量.而当磨粒直径、入口压力以及电流强度选取过大时,虽然能获得较高的材料去除率,但是最终获得的表面粗糙度值并不理想.该研究为通孔零件内壁表面精密光整加工提供了有益参考.
In order to solve the problem of inner wall finishing of small hole, this paper presents a new type of precision grinding hole finishing technology, guided by the theory of magnetism induced phase change, describes the material removal of the finishing process of the liquid magnetic abrasive grinding hole from the microscopic point of view The mathematical model of the material removal rate of the hole finishing is obtained by using the model of “double-edge radius” model to study the cutting model of a single abrasive particle.Experimental results show that the effects of abrasive particle size, inlet pressure and current intensity Material removal rate and surface roughness, the experimental results show that increasing the particle diameter, inlet pressure and current intensity can improve the material removal rate and surface quality within the proper range.When the diameter of the abrasive particles, inlet pressure And the current intensity is too large, the obtained surface roughness value is not ideal though the material removal rate can be obtained.The research provides a useful reference for the precision finishing of the inner wall surface of through-hole parts.