冲压板材或毛坯材料时,冲头可能会发生破损,参考如图1。这种破损通常很难直接检测到,因为冲头要么深埋在模具中,没有清晰的视野,要么冲头在冲压完成后立刻缩回到机构里,看不到冲头。通过检测成品件,确保冲头结构完好并且正确加工了零件。视觉传感器通过将新冲压的零件与示教的模板进行比较以区分零件好坏,参考如图2。
为了确保包含多个冲孔的工件正确冲孔,毛坯尺寸、冲孔直径、精度要求和感应距离等变量都会影响制定合适的检测方案。
倍加福 VOS2000 2-D 视觉传感器分辨率为 1280 x 960 像素,焦距为 8 mm,是这种检测任务的理想解决方案。该传感器的组合式视觉工具可实现功能检测、完整性检查、机械焦点调节和物体位置检查,这些功能对于检测冲头是否破损非常重要。VOS2000 2-D 视觉传感器集成 LED 照明,对于基于相机视觉成像的评估至关重要,可确保在具有挑战性的条件下实现可靠的冲孔检测。
技术特性
使用 VOS2000 2-D 视觉传感器,可以快速检测破损的冲头,并在不正确的冲压零件与合格零件混合之前停止冲压。
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