用于各类自然皮、合成皮之鞋面边缘磨粗处理。操作时只需将鞋面边缘依宽度调整好，置放于砂
轮及橡胶轮间，机器即自动将鞋面边缘磨粗。
used for roughing vamp edge, while operation, you only need to adjust roughing width of the edge, and then put it between the sand stone and rubber wheel, machine will do roughing automatically.