期刊论文

Simulation and Experimental Study on Diamond Grit with Positive Rake Angle Grinding Titanium Alloy

中文

湖南大学学报(自然科学版)

1674-2974

2021

48

12

70-78

10.16339/j.cnki.hdxbzkb.2021.12.009

国家自然科学基金资助项目 ; 湖南省教育厅科学研究项目优秀青年项目

本校为其他机构

为研究正前角金刚石磨粒磨削加工的机理,论证正前角磨削的可行性,采用有限元仿真软件ABAQUS建立单颗金刚石磨粒磨削Ti6Al4V钛合金过程的模型,对比研究不同工艺条件下具有正、负前角的单颗金刚石磨粒磨削过程中磨削力的变化规律.在此基础上,分别针对飞秒激光加工的正前角金刚石磨粒和原始的负前角金刚石磨粒开展钛合金磨削试验,采用测力仪测量磨削力,并将测得的磨削力与仿真结果进行对比;观测磨削加工表面形貌,测量表面粗糙度,将正、负前角磨削时的磨削力、磨削加工表面形貌和表面粗糙度进行对比.结果表明,在单颗金刚石磨粒磨削中,磨削力随着磨削速度的增大而减小,随着磨削深度的增加而增大,随着...

In order to explore the mechanism of positive rake angle (PRA) grinding for diamond grit and to demonstrate the feasibility of PRA grinding, the finite element simulation software ABAQUS was used to establish a grinding model of Ti6Al4V titanium alloy with single diamond grit. Then, the change law of grinding force in the grinding process of single diamond grit with PRA or negative rake angle under different process parameters was studied and compared. On this basis, titanium alloy grinding experiments were carried out for the PRA diamond grit fabricated by femtosecond laser and the original n...