Disc-shaped circular saw blade is sandwiched between stiffening rings attached by screws with countersunk heads from alternate sides

摘要

A disc-shaped circular saw blade is sandwiched between two stiffening rings. Each stiffening ring is attached to the blade ring by screws with countersunk heads. The tip of each screw engages in a matching thread in the second ring. The screws are inserted in sequence from alternate sides.