Extrusion is a plastic forming processing method that applies pressure to the spiral bevel gear blank in the die cavity through the punch fixed on the press to produce plastic deformation, so as to obtain the required shape, size and parts with certain mechanical properties. Extrusion can be used to lengthen the bar.
Extrusion has the following advantages:
(1) Improve the deformation ability of spiral bevel gear blank. In the process of extrusion, the metal can give full play to its plasticity and obtain large deformation under the condition of strong triaxial compressive stress.
(2) The comprehensive quality of extruded products is high. Extrusion deformation can improve the microstructure and mechanical properties of metal materials of spiral bevel gear blank.
(3) Great production flexibility. Products with different shapes, sizes and varieties can be produced on the same equipment only by replacing the spiral bevel gear mold.
The extrusion forming method is proposed to be used to lengthen the blank, the extrusion forming process is numerically simulated, and the extrusion process and die forging process of spiral bevel gear blank are analyzed in multiple steps.