THE STUDY OF MANDREL PARAMETERS WITH WOUND ELASTIC TAPE SCREW CLAMPING ELEMENTS

Abstract

The article presents the design and three-dimensional model of a mandrel with wound elastic tape screw clamping elements. The advantage of such mandrels is the ability to clamp thin-walled cylindrical workpieces by distributing the clamping force over the entire contact surface between the workpiece and the elastic screw clamping element. The parametric equations of the surface of a screw clamping element with conical parts are presented. The calculation scheme of the geometrical parameters of clamping the workpiece with a screw clamping element with conical parts was developed. The equation for determining the axial force that must be applied to the end of a screw clamping element with conical parts during its deformation is derived. Graphs of the dependence of the axial force applied to the end of the screw clamping element with conical parts when clamping the workpiece on the geometric parameters of the screw clamping element were constructed. The stress-strain state of a mandrel with an elastic screw clamping element and a workpiece fixed on it under the action of an external radial force was studied using the finite element method.