Patent ID: 8272629

Claim:
A swing clamp apparatus comprising a clamp body, a clamp rod supported by the clamp body reciprocally in an axial direction thereof and rotatably around an axis thereof, a clamp arm attached to a leading end of the clamp rod, and a drive mechanism coupled to the clamp rod that reciprocates and rotates the clamp rod to switch the clamp arm between an unclamping position and a clamping position where the clamp arm is retracted in the axial direction and swung about the axis in relation to the unclamping position, an attachment block fixed to the leading end of said clamp rod and to which the clamp arm is detachably attached; and at least one clamping force transmission pin inserted in said attachment block and clamp arm in the direction parallel to the orthogonal direction to the axis for coupling the positioned clamp arm to said attachment block in an integrated manner.