Research on Divided Flow Cold Extrusion Technology of Reverse Spiral Bevel Gear for Motorcycle
|School||Chongqing University of Technology|
|Course||Mechanical Manufacturing and Automation|
|Keywords||Spiral bevel gear Cold extrusion Numerical Simulation Mold Design Process Test|
Spiral bevel gear with its superior transmission performance , widely used in cars , motorcycles and other mechanical systems in the three-dimensional transmission . Such parts by forging Gleason gear cutting machine cutting processing . Cold extrusion technology has the advantages of high production efficiency , saving raw materials , low cost , high strength parts and good surface quality has unique advantages , especially in high-volume production . If applied to spiral bevel gear tooth profile of the (near ) net shape processing , will have broad application prospects . Spiral bevel gear teeth appear before arc in the cold extrusion process , the metal flow difficulties forming a larger force ; molding of poor quality , mold life and low technical problems exist in the actual production . Therefore , the cold extrusion technology spiral bevel gear cutting with a certain degree of technical difficulty . This selection of the rigid-plastic finite element simulation software DEFORM-3D spiral bevel gear cold extrusion process numerical simulation analysis , drawn the parts metal flow during the forming process , as well as the law of stress and strain distribution ; blank diameter metal filling the performance impact ; contrast closed extrusion shunt extrusion and taken off the the punch squeeze three cold heading crowded composite forming process of forming force size ; shunt hole diameter of the forming force for shunt extrusion , optimized best diversion hole diameter . Also finishing hot forging - cold extrusion forming process , shows that shunt extrusion process than closed extrusion process of cold extrusion force is small . Based on theoretical analysis , based on existing equipment conditions to develop a technology test program , the development of a dedicated mold layer combination die and die -oriented cold extrusion process test to verify the theoretical analysis results .