Screw assembly for food processor

A screw, comprising:

• a screw body including a feeding area for feeding and a crushing area connected to the feeding area;
• a first spiral rib extending along a top of the screw body to a bottom of the screw body, wherein the first spiral rib includes a cutting section and a crushing section, the cutting section is extended to a direction from the top of the screw body toward the bottom of the screw body, the crushing section is continuously connected to the cutting section and extended toward the bottom of the screw body;
• a cutting surface disposed on the feeding area and extending downward from the top of the screw body;
• and
• a plurality of second spiral ribs disposed on the screw body at intervals along an axial direction of the screw body;
• and
• wherein
• a starting end of the first spiral rib is at least partially disposed on the cutting surface;
• the cutting surface has a triangular surface at upper portion of the cutting surface, and the triangular surface connects and covers a part of the starting end of the first spiral rib;
• the screw body is recessed at position of the cutting surface;
• and
• a perimeter of the triangular surface is continually connected to a perimeter of the cutting surface, and the perimeter of the triangular surface and the perimeter of the cutting surface are in a same plane.