Parametric Platform Design Of Large - Scale All - Fiber Crankshaft Virtual Manufacturing

The heavy all fiber crankshaft is the main part of marine engine and other heavy machinery,also is the biggest size part, its shape structure and size also influences and determine the overall size of the engine and the whole ship to a great extent. Crankshaft plays the important function of transmission power in the Marine engine, during the whole process it will suffers torque and bending moment which easily lead to vibration and fatigue fracture, thus, crankshaft plays a role in the whole life of the ship. So, heavy Marine crankshaft not only needs good strength and rigidity but also comprehensive performance. Due to large size, and complex machining process, it is necessary to conduct crankshaft parametric design and virtual manufacturing before the actual processing, to verify its size and performance is in line with the actual production needs.Based on the research of the heavy all fiber crankshaft parametric design, choosing Solidworks as the development platform, using programming language vc + + to proceed secondary development of Solidworks. Established sub feature plug-in of the heavy all fiber marine crankshaft respectively, then finished parametric design of the whole crankshaft and die in the virtual manufacturing process through combination and assembly. Finally, based on the metal plastic forming software DEFORM-3D, preceded the plastic forming simulation of the blank and die that generated in the parametric design, to verify the rationality of the parametric platform design. The specific research contents are as follows:(1)Analysis the sub feature of the heavy all fiber marine crankshaft, set up the parts library entity model of each sub feature respectively, then form the whole crankshaft through combining assembly.(2)On Solidworks platform, using vc + + for secondary development and dimension drive mode for implementing parametric design of the crankshaft sub-features. Built the parametric modeling plug-in respectively, and then completed the whole crankshaft parametric modeling design through assembled.(3)With the virtual manufacturing of crankshaft single-throw as the research object, on the Solidworks platform, using vc + + to build virtual manufacturing blank and die plug-ins of parametric design that used in the process of parametric design, then set the related position.(4)Carry out the virtual manufacturing of ladder shaft blank and optical axis blank by DEFORM-3d, verify the rationality of the crankshaft parametric platform, and various properties of single-throw forgings that provide important basis for practical production.