The utility model is aimed at improving the reliability and quality of the process. Said technical result is achieved in that the grooves and holes in the discs operate by stamping, combining them in pairs so that the recess of one disk positioned against another disk hole, after which they are fixed to each other on the shaft - welding. Rack of knives mounted in the slots on both sides of the disc. Alternatively, the wheels are connected in pairs rivets.; 1 ZP f-ly. 3 Fig.
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