Abstract: An index-feed machining system having a pilot machining device for sequentially forming pilot portions on a workpiece indexed at predetermined pitches, a pilot guide means engaging with the pilot portions, and a plurality of independent machining means corresponding to a plurality of machining processes; all of these means being sequentially disposed in the feeding direction of workpiece; in which the pilot machining means and the pilot guide means are constructed integrally. The index-feed machining system lends itself to the easy positioning of machining means, and to the manufacture of high-precision products.