Indexing device

An indexing device, comprising:

• a machine base;
• a turntable, provided on the machine base, the turntable having a plurality of roller followers arranged at equal angular intervals;
• and
• a cam component, provided on one side of the turntable, the cam component having a first side rib wall with a continuous cam curved surface in a first direction and a second side rib wall with a continuous cam curved surface in a second direction, the first side rib wall and the second side rib wall facing opposite sides to form a cam groove with a variable groove width for guiding the movements of the plurality of roller followers and rotating the turntable;
• wherein the first side rib wall and the second side rib wall compress on at least one pair of the roller followers of the turntable symmetrically along the first and the second directions, one of a pair of the plurality of roller followers is compressed by the first side rib wall without contacting the second side rib wall, the other one of the pair of the plurality of roller followers is compressed by the second side rib wall without contacting the first side rib wall.