A machining center includes a number N of workpiece tables. A number N of first guides extend parallel to a first direction. Along the first guides is movable respective to workpiece tables, one for each first guide. A number N1 of second guides extend parallel to a second direction transverse to the first direction. A number N1 of machining groups each include at least one machining head. Each machining group is movable parallel to the second direction along a respective second guide. A number N(N1) of machining areas is provided. The machining groups can operate on workpieces present on the tables. Along each first guide, or for a respective table, there is present N1 machining areas, one for each machining group, so that each machining group can operate, according to a programmed work cycle, on all the N workpiece tables.