Mechanism for adjusting and correcting renishaw measuring head and adjusting and correcting method

The invention discloses a mechanism for adjusting and correcting a renishaw measuring head and an adjusting and correcting method. A base body, an annular piece and an ejector rod are included. An inner groove is formed in the top of the base body, and the end portion of the base body is provided with a first through hole communicating with the inner groove. The first side wall of the base body isprovided with a notch communicating with the inner groove. The two sides of the notch are provided with a first limiting piece and a second limiting piece correspondingly, and the second side wall ofthe base body is provided with a third limiting piece. The outer surface of the first side wall or the second side wall is a datum plane. One end of the ejector rod is rotationally connected with thefirst through hole and located in the base body, and the other end of the ejector rod is located on the outer side of the base body. When the annular piece is located in the inner groove, the first limiting piece, the second l