Research on the new process of separating hollow work-piece by eccentric torsion cutting for stamping

Abstract

This work aims to conduct theoretical and experimental studies on the energy and force parameters of the separation process, as well as the geometric accuracy of the separated tubular workpiece using the "eccentric twisting" method. A mathematical model of a device with a "crank-circular" mechanism for cutting pipes by "eccentric twisting" has been developed. The technological process of cutting pipes by "eccentric twisting" was simulated using the DEFORM-3D software package. The results of experimental studies are in good agreement with the theoretical data calculated using the proposed mathematical model and the specialized program DEFORM-3D. The maximum differences between the cutting torque values obtained theoretically and experimentally do not exceed 6%. For the industrial implementation of research results, a design of an installation with a wedge-hinged drive with a concave wedge in combination with a "crank-circular" mechanism for separating pipes by the "eccentric torsion" scheme is proposed.

Keywords

• separation
• eccentricity
• torsion
• slider
• connecting rod
• crank
• work-piece
• force
• moment
• quality
• wedge
• hinge