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汽车凸轮轴颈渗铜,是提高凸轮轴颈表面耐磨性能的重要加工环节.该加工环节的正常完成,依赖于在加热处理前,将渗铜环坯正确放置到零件指定表面上.没有放置渗铜环坯或放置位置不对就被送进加热处理设备,将产生渗铜不合格零件.实施凸轮轴颈渗铜环坯状态监测的难点是,排布在高温渗铜炉传送带上的凸轮轴颈工件位置是不固定的;各工件之间的距离也是变动的;工件相对光源位置不同导致特征影象的显著区别.为此,采用突出特征点快速识别方法对每个工件实现定位;采用局部特征模板比对法进行渗铜环坯放置的判别;采用梯度补偿法消除光照分布场趋异的影响.经实测,所采用方法是有效的。
Car camshaft infiltration of copper, is to improve the wear resistance of the camshaft surface an important part of the processing of the normal completion of the link, relying on before the heat treatment, the infiltration of copper ring blanks correctly placed on the designated parts of the surface. Infiltration of copper billet or placed on the wrong place will be sent to the heat treatment equipment, will produce copper infiltration of failed parts .Curve journal shaft caster copper billet condition monitoring is difficult, arranged in the high temperature copper infiltration conveyor belt on the camshaft The position of the neck workpiece is not fixed; the distance between the workpieces also varies; the position difference of the workpiece relative to the light source leads to the significant difference of the feature images; therefore, the rapid recognition of the prominent feature points is used to locate each workpiece; The feature template method was used to judge the placement of infiltration copper ring billet, and the gradient compensation method was used to eliminate the influence of the divergence of light distribution field.The measured method was effective.