Six-degree-of-freedom type robot zero calibration mechanism

The invention belongs to the technical field of robots, in particular to a six-degree-of-freedom type robot zero calibration mechanism. The six-degree-of-freedom type robot zero calibration mechanismcomprises a six-degree-of-freedom type robot, a tail-end zero calibration device, a base zero calibration device and a tail-end zero calibration position limiting device, wherein the tail-end zero calibration device is connected with a tail-end flange of the six-degree-of-freedom type robot; the base zero calibration device is arranged on a base of the six-degree-of-freedom type robot; the tail-end zero calibration position limiting device is arranged on the base zero calibration device and is used for positioning the tail-end zero calibration device; and through mutual cooperation of the tail-end zero calibration device and the base zero calibration device, joint positions of the six-degree-of-of-freedom type robot are determined, so that zero positions of the joints of the six-degree-of-freedom type robot are de