It is suggested that the springs having bluish dark color grindingface after grinding should be tempered once more and inspect existing defects or not.
建议对磨削后磨削面呈蓝黑色的弹簧再一次回火处理并检查是否存在缺陷。
2
SHOULDER: Defect found on rib or outer diameter; a raised edge on rib face caused by grinding wheel; raised surface at either end of outer diameter raceway.
挡肩：外径或挡肩上发现的缺陷；挡肩上由于磨床砂轮所造成的突起；在外径滚道两端的突起。
3
Using a helical involute pinion surface to form the grinding worm surface, a helical face gear is formed via a two-parameter worm envelope.