Economical crankshaft design through topology analysis for C type gap frame power press SNX-320

Abstract

Introduction. The presses are powered machines having stationary beds and slides (rams) which have controlled sliding motion towards and away from the beds, guided by the frames. Metal can be worked in power press in a wide verity of ways like punching, shearing, forming, etc. Crankshaft is one of the basic components for power transmission, which transmits rotary motion to sliding motion in the mechanical power press. It is around this element that all stresses and deformations are concentrated. The purpose of the study: rationalization of the design of the crankshaft, taking into account the strength characteristics of the frame, connection screws, tie rods. The methods include two stages of crankshaft design development: 1) modelling in parametric cad software; 2) FE analysis in Ansys-22R1. The existing as well as the improved design of the crankshaft was investigated by the FE method with topology analysis. Topology is part of FE analysis as well as Generative design. Result and Discussion. The design of the crankshaft, including the bearing assembly, depends largely on the maximum pressure that will be generated at the bottom of the stroke, and this is carefully considered when designing other parts of the presses. Based on the results of the topology analysis of the crankshaft structure, it was found that an increase in the strength of this structural element is possible by adding additional material in the area of potential destruction. During the study, it was possible to develop a rational design of the crankshaft with improved mechanical properties compared to the existing one, which will increase the service life of the crankshaft, preventing its failure.