To provide a grating body for a battery electrode plate, in which cracks are hard to occur in a grating frame 3b of a lead sheet by forming the frame 3b so as to be an angled shape in a twisted state in advance by forming inclined surfaces 1e on circumferential side surfaces of a peak part 1a of a disc cutter 1, and to provide a manufacturing device thereof.

On the circumferential side surfaces between the top part 1d of the peak part 1a and the root part 1b formed on both sides of each root part 1b in the disc cutter 1 installed in a disc cutter roll 2 of a rotary-type expander, as each circumferential side surface comes closer to the disc surface on the side where a recessed groove 1c at each root part 1b is formed, the inclined surface 1e is formed so as to come closer all the more to the shaft center side.