Patent ID: 6951160

Claim:
A cutting device for spring manufacturing machines, comprising: an actuator including a base with a shaft opening, and a connecting rod with a pin hole and a pivot hole fixedly mounted to the base; a transmission mechanism including a driving shaft furnished in the shaft opening to drive the actuator in an eccentric revolving movement; and a sliding mechanism including a track, a positioning shaft, a blade adjusting block, a slider, a switching pin, a connecting pivot and a blade, the positioning shaft and the blade adjusting block being fixed on the track, the slider including a first and a second axial holes, and being linearly moving back and forth in the track, the connecting pivot being inserted through the first axial hole and the pivot hole to connect the slider and the connecting rod, and the blade being connected to the slider; thereby when the switching pin is inserted through the second axial hole of the slider and the pin hole of the connecting rod, the track will swing with respect to the positioning shaft so that the blade will perform an oval trace cutting operation under the linear movement of the slider and the swing of the track, and when the switching pin is removed, the track is fixed so that the blade will perform a linear direction cutting operation.