Patent ID: 9469002
Filing Date: 2016-10-18
CPC Classification: B23Q

Claim Text:
1. A clamping device for clamping a workpiece defining at least two protection holes, comprising: a supporting seat defining a sliding groove, a first receiving groove, a second receiving groove, and a receiving hole, and the supporting seat comprising a protrusion portion, the sliding groove being defined at a middle of the supporting seat, the first receiving groove and the second receiving groove being located at opposite ends of the supporting seat and communicating with the sliding groove, the receiving hole being defined at a bottom of the first receiving groove, and the protrusion portion being located at a bottom of the second receiving groove; a pressing plate securely stacked upon the supporting seat; a clamping assembly located between the supporting seat and the pressing plate, and the clamping assembly comprises: an operation assembly comprising a locking member and a transmission pin eccentrically assembled to an end of the locking member, wherein the locking member extends through the pressing plate, and defines an abutting surface at an end away from the pressing plate, and forms a spiral protrusion along a periphery of the abutting surface, the abutting surface partially resists the pressing rod, a height of the spiral protrusion increases along anti-clockwise or clockwise directions, the transmission pin resists the pushing member, when the locking member is rotated, the transmission pin is driven to resist the pushing member toward the second latching member, thereby pushing the second latching member to be partially exposed from the supporting seat, simultaneously, the spiral protrusion resists the pressing rod to drive the first latching member to be partially exposed from the supporting seat, such that the first latching member and the second latching member latch into the at least two protection holes correspondingly to clamp the workpiece.