描述轮胎接地印痕的新方程

New equations are proposed to describe the shapes and sizes of the contact areas between tire and ground（the contact areas） under the conditions of static load,slip,camber,and rolling.The equations are super ellipse and trigonometric function with four parameters.Results indicate that the contact areas under the conditions of static load,slip,camber can be well described by super ellipse,in the most complicated case,fourteen parameters are used.The rolling contact area can be reconstructed by the trigonometric function completely.Symmetrical and asymmetrical shapes can both be described perfectly.The suggested curves will make calculate sizes of the areas easily.The described shapes and sizes are in good agreement with the measured,the maximum deviation is only 2.88%.This work will provide an instrument for understanding the contact area and be helpful for analyzing tire and road.     

基于PLC和编码器的胎面定长控制方法的应用

随着人们对轮胎要求越来越高,生产厂商提高轮胎的均匀性及动平衡性能成为当前重要课题。轮胎中胎面长度对轮胎性能起到很大的作用,会影响轮胎的动平衡性。为了提高胎面裁断长度精度,系统对胎面定长方式改造。通过PLC控制FESTO伺服驱动器,完成系统控制。利用激光测距传感器和装有计米轮的编码器对胎面长度进行控制,从而提高胎面长度精度。     

全钢载重子午线轮胎内衬层生产工艺的研究

对比研究型辊压延法和口型挤出法两种全钢载重子午线轮胎内衬层生产工艺。型辊压延法具有内衬层表面质量优良、尺寸稳定性强和生产速度高等优势，但在更换规格、成品病疵、设备维护保养和工装设计加工等方面不如口型挤出法，口型挤出法可实现内衬层规格快速变更，降低成本。本研究可为全钢载重子午线轮胎内衬层生产设备的选型提供一定的参考。