|
With the rapid development of the manufacturing of automobiles, motorcycles , agricultural vehicles and ships, etc. , increasing the quality requirements of the transmission parts gears . The straight tooth internal gear is the key parts in the automotive reducer products , can replace heavy and bulky structure on the reducer , the existing transmission structure is compact and flexible . Cold precision forging process forming the inner gear with high production efficiency , saving materials , low cost , high strength parts , good accuracy and surface quality , industrial application prospects . Prior to analysis on the straight-tooth gear on cold precision forging process simulation modeling, parametric design ideas based on Pro / Engineer 3D geometric modeling internal gear and model size parameter processing , so that the size of between certain constraints . Complex internal gear geometric modeling process into a parameter list of the key parameters of the internal gear , only need to enter the relevant parameters in the table to get the desired shape of the internal gear . Two typical structure gear (through gear and non - penetrating internal gear ) cold precision forging process scheme . Using numerical simulation tools , mainly through internal gear from gear module, forming load gear forming quality research , effective tooth height and die life , and meet the technical requirements of reasonable parameters . Comparison from forming load , precision gears and mold life of two possible scenarios through internal gear and get these two programs each applicable conditions . Analysis using solid materials extrusion die force of non- penetrating internal gear , propose three combination die structure . With artificial neural networks and genetic algorithms to optimize the structural design parameters of the three die , get full play to the optimal design parameters of the three combinations of die material performance . Finally, the experimental verification through internal gear . Through experiments the toothed full , consistent with the results of the numerical simulation of tooth pieces , further proof gear within this paper, manufacturing through the cold precision forging process is reasonably practicable .
|