The squareness errors compensation for Coordinate Measuring Machines based on virtual factory

Faced with fierce competition, the concept of virtual factory comes out. As an important part of virtual factories, Coordinate Measuring Machines' accuracy is important. The paper introduces the efficient and economic method, error compensation, to enhance the Coordinate Measuring Machines precision. As the basic steps of error compensation, the significant error sources-geometric errors are found out; the errors relationship is established and the squareness errors' measurement is analyzed. The experiment is done, which validates the feasibility of the method.