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当在车床上或铣床上手动攻丝时,使用简图中所示的这种弹性顶针,能够使丝锥扳手保持直线性,并在开始攻丝时略微增加些轴向力。这种顶针的柄部尺寸可根据设备上套筒和夹头而定。
When manually tapping on a lathe or milling machine, using a flexible thimble as shown in the diagram allows the tap wrench to be linear and to slightly increase some axial force when starting tapping. The size of this thimble handle may depend on the sleeve and chuck on the device.