| Summary: | 碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 99 === This thesis aims at the simulation of cold forging process of spiral bevel gear. Based on the Taguchi quality engineering method, the parameters including rotation mode of the die, the size of initial billet, the speed of punch and the friction are arranged according to the orthogonal array.
After finishing the simulation, the analysis of variance is carried out with regards to the forming loads to investigate the effect of parameters on the cold forging and the relationship between the parameters and the forming die, and to find out the best combination of cold forging parameters.
Because the cold forging die suffers extremely large stress, stress analysis is conducted to compare the effect of traditional and multi-action type die. The loads of pre-stressed rings with the ratio of outside and inside diameter from 1.5 to 2.5 are calculated.
From analysis of die wear the difference of die wear resulting from different billet size under the same conditions is compared, so that we can understand the filling of tooth shape, further to lower the die wear and to improve the die life.
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