Manufacturing machine and method to manufacture a cylindrical battery

A manufacturing machine to manufacture a cylindrical battery comprising a cylindrical case which houses an electrochemical cell, the manufacturing machine comprising:

• a processing conveyor configured to move forward along a processing path a seat designed to support the cylindrical case;
• and
• an operating group which is arranged along the processing path and is configured to perform processing on the cylindrical case;
• wherein the operating group comprises:
• a support body, which is axially aligned with the seat and is mounted so as to rotate around a first rotation axis;
• and
• a plurality of processing discs, which are designed to perform processing on a side wall of the cylindrical case, are mounted on the support body so as to form a circle at a center of the cylindrical case, and in use, is placed and is radially movable so as to radially get close to and move away from the cylindrical case which is in use between the plurality of processing discs.