| Popis: |
In this paper, study on the effects of axial feed rate on the gear accuracy is discussed. First, geometrical model of a skiving process was introduced. The model was assumed that the cutter was perfectly made and perfectly assembled to the skiving rig (i.e., no cutter manufacturing error and inevitable set-up error was taken into account). Based on this model, geometrical analysis under the condition of different axial feed rate was conducted, where profile deviation and lead deviation were calculated. Secondly, experiments under the same condition as the geometrical analysis were carried out. From geometrical analysis, it was found that the effect of axial feed rate on the profile deviation and lead deviation were very small (less than 1 µm), which makes it negligible practically. In both analysis and experiments, profile deviations and lead deviations increased as feed rate increased, and profile deviations were larger than lead deviations. However, the profile and the lead deviations obtained by experiments were much larger compared to those of analytical ones. Improvement of the model is needed, however, it was found that the model is useful in estimating the overall deviations in a skiving process. |
