Tongs device

The utility model discloses a tongs device. Tongs device includes: the tongs main part, the chuck, it can set up with removing in the tongs main part, the chuck cylinder, it can drive thereby the chuck presss from both sides tight part, the locating pin, its be used for the locating element with tongs device's relative position, the vision -guided module, it includes the camera, the vision -guidedmodule is arranged in eliminating the part at the positional deviation on a plane, this plane perpendicular to the depth of field direction of camera, and tolerance mechanism, it is used for eliminating the part and is in the ascending positional deviation in depth of field side. Be used for eliminating the part in the tolerance mechanism of the ascending positional deviation in depth of field side through the setting, better the locating element to go on effectively pressing from both sides tightly to the part, guarantee that tongs device can pick the part accurately from the workbin, realize the automatic material