Patent ID: 8789825

Claim:
A clamping mechanism, comprising: a mounting base; a clamping assembly mounted on the mounting base for clamping or releasing a workpiece, the clamping assembly comprising: a rotating member rotatably attached to the mounting base, the rotating member defining at least two cam slots; at least two drive pins slidably engaged in the at least two cam slots of the rotating member, respectively; a guiding member mounted on the mounting base above the rotating member, the guiding member defining a central shaft hole and at least two radial guide slots around the shaft hole, the at least two drive pins passing through the at least two guide slots, respectively; at least two sliding members slidably engaged in the at least two guide slots of the guiding member, respectively, each sliding member comprising a first assembling end connected to one corresponding drive pin, and an opposite second assembling end positioned away from the shaft hole; and at least two clamping members attached to the second assembling ends of the at least two sliding members, respectively; and a driving assembly mounted on the mounting base, and comprising a driver having a driving shaft, the driving shaft passing through the shaft hole of the guiding member and fixed to the rotating member; wherein, the rotating member is driven by the driver via the driving shaft to rotate clockwise or counterclockwise, thereby driving the at least two drive pins to slide along the at least two cam slots back or forth, and accordingly the at least two clamping members together with the at least two sliding members are driven to slide relative to the guiding member back or forth for clamping or releasing the workpiece.