This paper mainly carries out three-dimensional automatic modeling of equal high tooth spiral bevel gear and its precision forging die through UG / OpenGRIP, and studies the forging process of equal high tooth spiral bevel gear. Compared with manual modeling, UG / OpenGRIP modeling has the advantages of simplifying the modeling process, improving the modeling accuracy and reducing the cost, but the modeling in this paper can still be further optimized:
(1) Based on the three-dimensional geometric relationship of equal height teeth, the automatic modeling is carried out through UG / OpenGRIP. The modeling accuracy is higher than that of manual modeling, but in the modeling, the base cone and pitch cone are related by approximate formula. In order to further improve the modeling accuracy, the following work should deduce the accurate formula between the base cone and the pitch cone.
(2) The tooth profile helix of the three-dimensional solid model of the constant height spiral bevel gear is an extended epicycloid, but when adding the uneven tooth surface allowance of the gear forging, adding it through a certain linear structure will lead to the deviation of the tooth profile from the extended epicycloid structure. Therefore, a certain tooth surface allowance can be added in the subsequent work, The tooth profile of gear forging still maintains the structure of extending epicycloid