PURPOSE: To process various kinds of works by the same operation with a cutting operation being simplified, by providing work placing positions which place plural kinds of works on the outer edge on a rotating table at equal intervals respectively and yet alternately.

CONSTITUTION: A rocker arm 1 aligned by an alignment device 10 is fed to a gate cutting device 11, which is composed of a rotating table 12 placing the rocker arm 1 at the specified position of an outer edge part and a cutting edge 13 provided adjacent to this rotating table 12, work placing positions A, B placing two kinds of rocker arms 1 are provided at equal intervals respectively and alternately at the upper face outer edge of the rotating table 12, and the rotating table 12 is equipped with the function sliding a start position and that stopping intermittently from this start position concurrently. Consequently, it is not necessary to change the cutting operation according to the two kinds of rocker arms l, besides the gate part 2 of two kinds of rocker arms l being able to be removed with its smooth cutting.