Ball end mill

ボールエンドミル

Abstract

(57)【要約】 【課題】 ボール刃が形成された高硬度・高耐摩耗性 焼結体が母材から外れず、ボール刃が形成される工具 先端部分の半径の大小にかかわらず容易に製造できるボ ールエンドミルを提供すること。 【解決手段】 円柱状の超硬合金製母材1の先端に形成 した半球状部11a(又は半球状部11aとこれに連続する 短い円柱状部11b)に、略一定の薄い層厚で高硬度・高 耐摩耗性焼結体3が一体焼結固着されて成るブランク材 から製造されるボールエンドミルであって、前記ブラン ク材の少なくとも高硬度・高耐摩耗性焼結体3が位置す る先端部分にランド部14と溝部15を周方向に交互に形成 すると共にランド部に残存した高硬度・高耐摩耗性焼結 体3部分にボール刃10aを形成してある。
PROBLEM TO BE SOLVED: To provide a ball end mill manufactured easily, regardless of the size of the radius of a tool tip part in which the ball edge is formed, in which a sintered compact with high hardness and high wear resistance in which a ball edge is formed is not removed from a mother material. SOLUTION: In a ball end mill manufactured from a blank material composed by that a sintered compact with high hardness and high wear resistance with nearly certain thin layer thickness is integrally sintered and stuck to a hemisphere part (or a hemisphere part and short columnar part connecting thereto) formed on the tip of a columnar cemented carbide made mother material 1, a land part 14 and groove part 15 are formed alternately in a periphery direction on the tip part in which at least the sintered compact with high hardness and high wear resistance of the blank material is positioned and also the ball edge 10a is formed on the sintered compact with high hardness and high wear resistance left on the land part. COPYRIGHT: (C)1999,JPO

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Cited By (1)

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    CN-103506820-AJanuary 15, 2014哈尔滨汽轮机厂有限责任公司Method for recycling scrapped R6 taper ball head end mill