Manufactura de una biela para un prototipo de motor de dos tiempos aplicando ingeniería inversa y las herramientas CAD/CAM/CAE

Abstract

This degree work aimed to manufacture a two-stroke motorcycle connecting rod applying methodologies such as CAD, CAE, and CAM. It began with a bibliographic review of concepts such as the design and manufacture of mechanical parts. Different steps were established to follow for the methodological development starting with the design of the connecting rod of an engine belonging to a Suzuki AX100. Reverse engineering was applied to obtain its dimensions that served as a guide. Next, spectrometry, hardness, and micrograph tests were given to the sample to determine its composition, resistance, and geometry respectively. With all these data, a CAD design was created using SOLIDWORKS software. The obtained model was exported to the NX SIEMEN12 software for the simulations of the manufacturing process when finished, delivered manufacturing codes that were entered into the FADAL 88HS CNC machine. With the program inside the machine, the last step was to place the material and control the manufacturing process under ISO 286-1 standards, which regulates the tolerances allowed in this type of work. When the connecting rod was finished, tests and simulations of unitary deformations and stresses were carried out, obtaining maximum values of 0.02mm and 63.9 respectively, having a safety factor of 7.2, which is considered acceptable. Geometric measurements were also achieved, obtaining a table of data equal to the sample used. With the results obtained, it was concluded that at present there is sufficient technology to carry out the entire construction process of a mechanical element. A spectrometry analysis of the block of material is recommended to avoid the appearance of pores in the material.