Open AccessThe Effect of Diamond Wheel Wear on Surface and Sub-Surface Quality in Fused Silica Optics Grinding
Author(s) -
Lian Zhou,
Qilong Wei,
Jie Li,
Xianhua Chen,
Jian Wang,
Qiao Xu
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/677/2/022091
Subject(s) - abrasive , grinding , diamond , materials science , surface roughness , diamond grinding , brittleness , diamond turning , composite material , surface finish , diamond tool , polishing , grinding wheel , surface layer , tool wear , metallurgy , layer (electronics) , machining
During the ultra-precision grinding process of fused silica optics, the micro-removal processes of brittle and hard fused silica material by diamond grits in different wheel wear states are inconsistent, which leads to the instability of the grinding quality of the components. First, the wear forms of diamond wheel in the process of grinding brittle and hard fused silica material were analysed. The main wear form of diamond grinding wheel was diamond abrasive wear. Then taking the cumulative removal volume of material as the evaluation parameter of wheel wear state, the evolution laws of surface roughness and sub-surface defects of components under different cumulative removal volume of material were studied. With the aggravation of grinding wheel wear, the surface roughness and depth of sub-surface defects layer decreased first, and then fluctuated and increased slowly. In the rapid wear stage, the falling diamond particles scratched deep grooves on the surface of components, and the roughness and sub-surface depth increased sharply. According to the results, it’s reliable to monitor the wheel wear state and predict the life of wheel.