Deformation Mechanism of Bolted Joint in Machine Tools

抄録

Two types of bolted joints are used to connect the column and the base of a machine tool. In this paper, the bending stiffness and the debase of a machine tool. In this paper, the bending stiffness and the deformation mechanism of the above types of bolted joints subjected to a static bending load are described ; here the thickness of the clamped portion of the experimental model is taken as a parameter. New, general characteristics of the bending stiffness are dependent on the deformation mechanism of a bolted joint. Large localized deformation is generated around bolts and at the boundary portion between the column and its flange. The bending stiffness of a column with a bolted joint used in radial drilling machines takes a maximum value, so called an optimum thickness, when the ratio of flange thickness to bolt diameter is nearly equal to 2.0.