Abstract: A backlash-free double row roller cam transmission mechanism includes two passive wheels, two sets of rollers respectively pivotally arranged on the circular peripheral edges of the passive wheels, and a transmission camshaft with two opposite sides of a spiral protrusion respectively abutted against the two sets of rollers. Use the principle of oblique wedge adjustment to generate the reverse thrust of the rollers, thereby eliminating the backlash between the rollers and the spiral protrusion. All rollers can abut against the entire spiral protrusion to increase the structural rigidity and transmission load and prolong the service life. The design is conducive to achieving the cam self-locking function.

Abstract: A double row roller cam transmission mechanism with backlash adjustment means is disclosed to include two passive wheels respectively provided with rollers, a transmission shaft with a spiral protrusion, and an adjustment device set operable to adjust the relative position between the two passive wheels so that the rollers of the two passive wheels can be respectively and positively abutted against the two opposite surfaces of the spiral protrusion of the transmission shaft to eliminate the backlash between the rollers and the spiral protrusion and to increase structural rigidity and transmission load.

Abstract: A double row roller cam transmission mechanism with backlash adjustment means is disclosed to include two passive wheels respectively provided with rollers, a transmission shaft with a spiral protrusion, and an adjustment device set operable to adjust the relative position between the two passive wheels so that the rollers of the two passive wheels can be respectively and positively abutted against the two opposite surfaces of the spiral protrusion of the transmission shaft to eliminate the backlash between the rollers and the spiral protrusion and to increase structural rigidity and transmission load