Roller tool and roller vegetable cutter

A roller tool, comprising:

• a roller body (1), wherein the roller body (1) is a cylindrical structure, and comprises a roller bottom surface and a roller side face, a discharge cavity is defined by the roller bottom surface and the roller side face, an end, opposite to the roller bottom surface, of the roller body (1) is open to form an outlet, a connecting part (11) protruding towards the outlet is disposed in a middle of the roller bottom surface, and multiple mounting parts (12) are disposed on the roller side face;
• multiple blade assemblies (2), wherein the multiple blade assemblies (2) are detachably mounted in the multiple mounting parts (12), lower ends of the multiple blade assemblies (2) are clamped at ends, close to the outlet, of the multiple mounting parts (12), a first mounting surfaces (211) are disposed at upper ends of the multiple blade assemblies (2), first clamping parts (212) are disposed at two ends of each of the second mounting surface (211), clamping protrusions (2121) are disposed on the first clamping parts (212), blade holder mounting surfaces (14) are disposed on an inner wall of the roller bottom surface, clamping grooves (1411) are formed in two sides of each of the blade holder mounting surface (14), and the multiple blade assemblies (2) are mounted on the roller body (1) through a cooperation of the clamping protrusions (2121) and the clamping grooves (1411);
• and
• a guide part (3), wherein the guide part (3) is disposed in the discharge cavity and connected to the connecting part (11) and is a hemispherical or cylindrical structure, and the guide part (3) and the roller body (1) are located on a same axis.