GRINDING FORCE STUDY IN MICRO END GRINDING OF HARD AND BRITTLE MATERIALS

Hard and brittle materials with good physical properties of high hardness, high uniform structure et al, are occupied with a larger proportion in microproducts yearly, but the current processing method can not solve the difficult-to-machine property of it commendably. For this purpose, this paper proposes a promising processing method, Micro End Grinding (MEG). Abrasive’s random distribution and material inhomogeneity generate that the study of the microgrinding mechanism is difficult, so this paper researches the grinding forces and the grinding force ratio through experiments which test material is silica glass, which are important factors of the grinding process. The influences of grinding parameters on variation tendency of grinding forces are investigated, and they are affected very much by the size effect. Meanwhile, experimental results verify that the ratio of the grinding forces is much less than the value of peripheral grinding. It will lay a good foundation for further mechanism study.