Analyses of grinding force characteristics of high speed creep feed grinding tungsten carbides

摘要

This paper investigates grinding forces, grain states and chips in creep feed grinding tungsten carbides by using a resinoid bonded diamond wheel in grinding speeds up to 80 m/s. Experimental results indicate there is a tendency that grinding forces incease as grinding speeds increse. Through SEM observations of diamond grains, chips and work-piece surfaces, it was found that chips are easily cohered and detained at grains cutting edges and results in grain cutting edges becoming blunt and hardly cutting-in. This indicates the possibility of the cohered chips increasing grinding forces.