Modal and Harmonic Analysis of Work Holding Device

Abstract

Machining is a vital aspect of the production process because it includes precise metal removal in order to attain quality, precision, and accuracy. It is critical in machining to select the proper cutting tools and work holding devices. In the manufacturing process, a work holding device is vital. During high-speed, low-feed machining, a mandrel is employed to grip a component. The present project is to create a Hydraulic Actuated Mandrel, which is a useful work-holding device that tightly grips the work piece. For mandrel manufacture, Chromium Vanadium steel is preferred because it creates uniform gripping forces and leaves no residual strains on the work piece. Empirical relationships are used to calculate the forces and pressures imposed by the cutting tool on the work piece and the work holding mechanism. The maximal theoretical hoop and longitudinal stresses are calculated using thin cylinder theory. The statical model is created with ANSYS software. The created model was assessed by applying forces and pressures to the mandrel, which caused deformations and stresses. The ANSYS-derived stresses on the mandrel are compared to theoretical stresses. The correlation between the two analyses is found to be good. Modal analysis is used to determine natural frequencies and mode shapes.