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    • 4. 发明专利
    • Radius end mill
    • RADIUS终端铣刀
    • JP2013215858A
    • 2013-10-24
    • JP2012090197
    • 2012-04-11
    • Dijet Industrial Co Ltdダイジ▲ェ▼ット工業株式会社
    • OSADA AKIFUMI
    • B23C5/10
    • PROBLEM TO BE SOLVED: To provide a radius end mill capable of suppressing the generation of chatter and performing cutting machining excellent in cutting machining quality even in the case of cutting a material to be cut comprising heat resistant alloys such as stainless steel and the titanium alloy.SOLUTION: In a radius end mill in which a plurality of bottom blades 11 are formed in the distal end of tool body 10, a plurality of outer peripheral cutting blades 12 are formed in the outer periphery of the tool body corresponding to each bottom blade, and corner blades 13 formed in a circular arc shape are formed between an outer peripheral side end part of each bottom blade and a distal end part of each corresponding outer peripheral cutting blade, rake angles θ of the corner blades in a radial direction at locations spaced apart 1/2 of a curvature radius R of the corner blades from the outer peripheral side distal end of the bottom blades in an axial direction are different in one corner blade and the other corner blades.
    • 要解决的问题:即使在切割包括诸如不锈钢和钛合金的耐热合金的待切割材料的情况下,提供能够抑制颤振产生和切削加工优异的切削加工的半径立铣刀 解决方案:在工具主体10的前端部形成有多个底部刀片11的半径立铣刀中,在与各底刃对应的工具主体的外周形成有多个外周切削刃12 在每个底部叶片的外周侧端部与每个对应的外周切割刀片的前端部分之间形成圆弧状的角刃13,前角和角度; 的角刃在径向方向上在距叶片的外周侧远端与轴向方向的外周侧远端间隔开1/2的曲率半径R的位置在一个角刃和其他角刃中是不同的 。
    • 6. 发明专利
    • Cemented carbide
    • 硬质合金
    • JP2012193430A
    • 2012-10-11
    • JP2011059361
    • 2011-03-17
    • Dijet Industrial Co Ltdダイジ▲ェ▼ット工業株式会社
    • HOSODA YUKIHIROSAKAGAMI KUSUHIKOYAMAMOTO TSUTOMU
    • C22C29/08
    • PROBLEM TO BE SOLVED: To provide a cemented carbide which is excellent in wear resistance, chipping resistance and welding resistance even in high speed cutting and heavy feed cutting, and in which an amount of WC used is reduced compared with the conventional cemented carbide.SOLUTION: In the cemented carbide, the amount of a hard phase component comprising WC, Ti(C, N), (Ta, Nb)C (including the case of Nb=0) and MoC is 80-92 wt.%, and the amount of a binding phase component comprising Co and/or Ni is in the range of 8-20 wt.%, wherein the amount of MoC of the hard phase component is 5-15 wt.%, and the amount of Ti (C, N) is in the range of 8-35 wt.%. The alloy structure is composed of four phases of a WC phase, a (W, Ti, Ta, Nb, Mo)(C, N) phase (including the case of Nb=0), a Ti(C, N) phase and a binding phase, and the average particle diameter of the WC phase is 0.8 μm or less.
    • 要解决的问题:提供即使在高速切削和重的进料切削中也具有优异的耐磨性,耐崩裂性和耐焊接性的硬质合金,并且与常规胶合相比,使用的WC量减少 碳化物。 解决方案:在硬质合金中,包含WC,Ti(C,N),(Ta,Nb)C(包括Nb = 0的情况)和Mo 2 C为80-92重量%,包含Co和/或Ni的结合相组分的量在8-20重量%的范围内,其中Mo 2℃是5-15重量%,Ti(C,N)的量在8-35重量%的范围内。 合金结构由WC相,(W,Ti,Ta,Nb,Mo)(C,N)相(包括Nb = 0的情况),Ti(C,N)相和 结合相,WC相的平均粒径为0.8μm以下。 版权所有(C)2013,JPO&INPIT
    • 9. 发明专利
    • Twist drill
    • JP2004025383A
    • 2004-01-29
    • JP2002187019
    • 2002-06-27
    • Dijet Ind Co Ltdダイジ▲ェ▼ット工業株式会社
    • HIYAMA YUJIFUJIKAWA MOICHI
    • B23B51/00
    • PROBLEM TO BE SOLVED: To provide a drill capable of stably drilling a metal material high in hardness for a long period of time by restraining breakage of a part on the rotating central side and an outer peripheral corner part of a main cutting blade on a head end of a drill main body in drilling the metal material high in hardness.
      SOLUTION: Two helical flutes 11 are formed on an outer periphery of the drill main body 10, chisel blades 12 are formed on both sides from a center of the head end of the drill main body 10 and two main cutting blades 13 respectively extending to the outer periphery of the drill main body continuously with each of the chisel blades are formed on this drill, an outer peripheral corner part 13a of each of the main cutting blades is formed in a circular arc shape and a rake angle γo at a point where a line Z inclined by β/4 to the axial a center of the drill main body and the outer peripheral corner part 13a formed in the circular arc shape make contact with each other is devised to be in a range of -10∼-20° in the case of specifying the head end angle of the drill main body as β.
      COPYRIGHT: (C)2004,JPO