Clamping device for a machining center and machining center

A clamping device for a machining center for the mechanical machining of workpieces, comprising:

• a workpiece pallet for coupling with the machining center, such that the clamping device is rotatable about a first axis of rotation in a coupled state of use, and
• wherein the clamping device has a first clamping unit receiving device and a second clamping unit receiving device which are connected to the workpiece pallet, wherein the first clamping unit receiving device has a first receiving housing and a first rotary table received in the first receiving housing, to which a first clamping unit for receiving and clamping a first workpiece can be fastened, wherein the second clamping unit receiving device has a second receiving housing and a second rotary table received in the second receiving housing, to which a second clamping unit for receiving and clamping a second workpiece can be fastened,
• wherein the clamping device has a rotary table drive which is adapted to rotate the first rotary table about a second axis of rotation and to rotate the second rotary table about a third axis of rotation, wherein the first clamping unit receiving device has a first blocking device with a first coupling element fixed to the first clamping unit receiving device and a first blocking element movable relative to the first coupling element, wherein the first rotary table can be moved by means of a first engagement movement to be carried out with the first blocking element into a first blocking position in which the first rotary table is non-rotatably coupled to the first receiving housing with respect to the second axis of rotation, and by means of a first disengagement movement to be carried out with the first blocking element into a first release position in which the first rotary table is rotatable relative to the first receiving housing with respect to the second axis of rotation, wherein the second clamping unit receiving device has a second blocking device with a second coupling element fixed to the second clamping unit receiving device and a second blocking element movable relative to the second coupling element, wherein the second rotary table can be moved by means of a second engagement movement to be carried out with the second blocking element into a second blocking position in which the second rotary table is non-rotatably coupled to the second receiving housing with respect to the third axis of rotation, and by means of a second disengagement movement to be carried out with the second blocking element into a second release position in which the second rotary table is rotatable relative to the second receiving housing with respect to the third axis of rotation.