埃莱玛随手捡起一块这样的工具展示给我看：一块上好的黑色玄武岩石块，四周已经被打磨成薄片，但锥形的尖端部分已经缺失。

Elema picked one up to show me: a handsome hunk of black basalt that had been flaked on all sides, missing only its tapered tip.

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驱动工具部件(100)包括交替的凹槽(104)和凸齿(106)，并且具有锥形部分(108)。

The drive tool component (100) includes alternating flutes (104) and lobes (106) and has a conical section (108).

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我们研制的MMK6026六轴五联动CNC工具磨床用于加工锥形球头立铣刀和其它复杂形状刀具的前刀面与后刀面。

Our product MMK6026 , which is CNC tool grinder with 6-axis and 5-coordinate controls, is used to machine the rake face and relief of conical ball end mills or other complex shaped tools.

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