锻钎
A large rake gear shaper without theoretical errors is designed, at the same time, the tool sharpening methods and related device are given. The Tool Grinding of High-speed Steel Twist Drill while Processing Different Materials
提出一种大前角、无理论误差的插齿刀及其刃磨原理和刃磨装置。加工不同材料时高速钢麻花钻的刃磨
Worn clutch facing disc wheel for steel wire needle sharpening
磨损的离合器摩擦片磨钢丝针用薄片砂轮
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