公开(公告)号：US6035844A

公开(公告)日：2000-03-14

申请号：US936730

申请日：1997-09-25

申请人： Ryuji Otani ,  Isao Fuwa ,  Masahiro Ikegami ,  Noboru Kusano ,  Toshikazu Hamada ,  Kyoichiro Nakayama

发明人： Ryuji Otani ,  Isao Fuwa ,  Masahiro Ikegami ,  Noboru Kusano ,  Toshikazu Hamada ,  Kyoichiro Nakayama

IPC分类号： B23D61/04 ,  B23D65/00 ,  B23K15/00 ,  B23K26/00 ,  B23K26/20 ,  B23P15/28 ,  B28D1/12

CPC分类号： B23D61/04 ,  B23P15/28 ,  Y10T83/9319 ,  Y10T83/9367

摘要： A cutting tool is provided which includes a steel metal body and a cemented carbide cutting tip secured to the metal body by a metallic layer. The metallic layer has a high-strength metallic portion and a high-toughness metallic portion. The high-strength metallic portion is made of a metal having a thermal expansion rate between a thermal expansion rate of the metal body and the thermal expansion rate of the cutting tip. The high-toughness metallic portion is located between edge portions of a securing region of the metal body and the cutting tip and has toughness larger than that of the high-strength metallic portion. The cutting tool can decrease the possibility of cracks being generated at the edge portions of the securing region by selecting a thermal expansion rate of the metallic layer so as to decrease the thermal stress caused during the cooling process after welding, and further by positioning a high-toughness metallic layer at the edge portions of the securing region where stress is concentrated and positioning a high-strength metallic layer meeting the strength requirement at the remaining portion of the securing region.

摘要翻译： 提供了一种切削工具，其包括钢金属体和通过金属层固定到金属体的硬质合金切削刀头。 金属层具有高强度金属部分和高韧性金属部分。 高强度金属部由具有金属体的热膨胀率与切削刃的热膨胀率之间的热膨胀率的金属制成。 高韧性金属部分位于金属体的固定区域和切割尖端的边缘部分之间，其韧性大于高强度金属部分的韧性。 切削工具可以通过选择金属层的热膨胀率来减少在固定区域的边缘部分产生裂纹的可能性，从而降低在焊接之后的冷却过程中产生的热应力，并且进一步通过定位高 在紧固应力集中的固定区域的边缘部分设置柔性金属层，并且在固定区域的其余部分定位满足强度要求的高强度金属层。

公开(公告)号：US5855157A

公开(公告)日：1999-01-05

申请号：US873560

申请日：1997-06-12

申请人： Hidezumi Okamura ,  Ryuji Ohtani ,  Isao Fuwa ,  Noboru Kusano ,  Masahiro Ikegami ,  Masao Torigoe ,  Shoichi Hongo

发明人： Hidezumi Okamura ,  Ryuji Ohtani ,  Isao Fuwa ,  Noboru Kusano ,  Masahiro Ikegami ,  Masao Torigoe ,  Shoichi Hongo

IPC分类号： B23D61/02 ,  B23D61/04 ,  B23D61/12 ,  B27B33/02 ,  B26D1/46

CPC分类号： B23D61/021 ,  Y10T83/909 ,  Y10T83/917 ,  Y10T83/9319 ,  Y10T83/9326 ,  Y10T83/9367

摘要： A saw blade preventing "fluff" or "return" of fibers from occurring when used to cut wood or the like object and rendering any finishing work unnecessary is formed with a unique combination of cutting teeth and biting teeth, the biting teeth being disposed, on a cut path mainly by means of the cutting teeth, either on top surface of or in front of each cutting tooth in cutting direction of the saw blade and to have a smaller width than the cutting teeth, for realizing a biting operation by the biting teeth and the cutting operation by the cutting teeth in the same sawing step.

摘要翻译： 用于切割木材或类似物体的纤维防止“绒毛”或“返回”的锯片形成为不需要的切割齿和咬齿的独特组合，咬合齿被设置在 主要通过切割齿的切割路径，在锯片的切割方向上的每个切割齿的顶表面或前面，并且具有比切割齿更小的宽度，以实现咬齿的咬入操作 以及在相同锯切步骤中切割齿的切割操作。