This paper presents a new special technics for deep and blind square鄄hole machining on carbon fiber
reinforced plastics( CFRP) composite. Through contrasts between different experiments and considering grinding
force, machining quality, tool wear and machining efficiency, the results indicate that the means of first drilling and
then grinding is fit for the machining of square鄄hole. This paper also implements technics optimization according to the
problems occurred during experiment. The problem of deep and blind square鄄hole machining on CFRP is preliminary
solved