A minimum of two safety switches must be installed on all progressive dies to probe for proper strip advancement and part out detection.
在扫数连续模中起码安置两个安定检测开关去检测料带是否精确送进以及产品是否脱落。
2
The roof shape optimization is one of the important means to control the ground pressure. A long strip of exposed roof surface shape can improve productivity of the stope and ensure mining safety.
Besides, the depth of topmost geogrid to the width of strip footing is also greatly correlative to the safety factor, and the best ratio changes with the layers of geogrids.