Based on the structure of LMJ series of two heads hammering machine,this machine is added with another crossbeam with extra three heads in horizontal direction.With faster working speed,lower cost and higher efficiency,the capacity of this machine can be up to 70-90 sq m,while the comprehensive cost is only RMB2.00. With a crossover running mode of the two crossbeams,slabs won't be processed repeatedly,so the final finish will be much evener and flatter and the surface looks natural and beautiful.For the antique finish processing,heads #3 、#4and #5 can be replaced with three polishing brushes to do the polishing job after the hammering work has been done by #1 and #2 .The front two heads mounted with two heavy motors are applied to grinding the slab surface,and the rear three are structured in slideway which are light loaded,therefore,the percentage of slab damage has been greatly reduced while hammering speed increased remarkably.This design is more appliable to the slab which is harder while its toughness is poor.