Y7520W 螺纹磨床发生故障的原因:一是磨床制造质量不好;二是用户错误的操作。现将常见操作故障的原因及排除方法介绍如下,供用户参考。一、工件牙侧有显著振动痕迹(波纹)(一)在工作开始时出现1.磨床未预热。工作前应先空转0.5～1h,使冷间隙缩小。2.砂轮下方有冷却液积聚,造成不平衡。下班前应空转10min,甩去砂轮中的冷却液。 Y7520W thread grinder failure reasons: First, poor quality manufacturing grinder; the second is the user erroneous operation. Now common causes of operation failure and troubleshooting are described below, for the user reference. First, the workpiece flank significant vibration marks (ripple) (A) appeared at the beginning of work 1. Grinder is not preheated. Work should be idle before 0.5 ~ 1h, so cold clearance narrowing. 2. Coolant under the wheel accumulation, resulting in imbalance. Before leaving get off work should be idle 10min, rejection to the grinding wheel coolant.