公开(公告)号：US5611251A

公开(公告)日：1997-03-18

申请号：US432282

申请日：1995-05-01

申请人： Ichiro Katayama

发明人： Ichiro Katayama

IPC分类号： B23B27/14 ,  B23B51/00 ,  B23B51/02 ,  B23B51/10 ,  B23P15/28 ,  E21B10/44 ,  E21B10/56 ,  E21B10/567 ,  E21B10/58 ,  B23B27/20

CPC分类号： E21B10/5676 ,  B23B27/146 ,  B23B51/009 ,  B23B51/02 ,  B23B51/108 ,  B23P15/28 ,  E21B10/44 ,  E21B10/58 ,  B23B2226/125 ,  B23B2226/315 ,  B23B2240/08 ,  B23B2251/50 ,  Y10S76/12 ,  Y10T407/26 ,  Y10T408/81 ,  Y10T408/9097

摘要： A drill bit for cutting hard and abrasive materials has cutting lips formed from sintered polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN) contained in one or more inserts installed in a drill bit blank. The inserts are made by forming depressions in the upper surface of a matrix slab of tungsten carbide, filling the depressions with fine mesh grains of diamonds or cubic born nitride, subjecting the slab to heat and pressure sufficient to fuse the grains to one another and to the surrounding matrix walls, and then cutting the matrix slab to remove individual inserts containing an elongated vein having an exposed PCD or PCBN surface supported by at least one and preferably two or more side walls of tungsten carbide. A rectangular slot having side walls parallel to one another and equidistant from the diameter of a cylindrical drill bit blank is cut into one transverse end wall of the blank, and one or more inserts placed in the slot. The tungsten carbide walls of the inserts are then brazed to the adjacent side walls of the slot. The bit is then ground to a desired configuration, in which PCD or PCBN material forms at least part of at least one cutting lip of the finished drill bit. Preferably, flutes are formed in drill bit blank as part of the grinding operation.

摘要翻译： 用于切割硬质和磨蚀性材料的钻头具有由安装在钻头坯料中的一个或多个插入件中所包含的烧结多晶金刚石（PCD）或多晶立方氮化硼（PCBN）形成的切割唇。 刀片通过在碳化钨的矩阵板的上表面中形成凹陷来形成凹陷，用金刚石或立方氮化物的精细网格填充凹陷，使板坯加热和压力足以将晶粒彼此熔合， 周围的基质壁，然后切割基质板以除去包含具有由碳化钨的至少一个且优选两个或更多个侧壁支撑的暴露的PCD或PCBN表面的细长静脉的各个插入物。 具有彼此平行并与圆柱形钻头坯料的直径相等的侧壁的矩形槽被切割成坯件的一个横向端壁，以及一个或多个插入件放置在槽中。 然后将插入件的碳化钨壁钎焊到槽的相邻侧壁。 然后将钻头研磨成所需的构造，其中PCD或PCBN材料形成成品钻头的至少一个切削刃的至少一部分。 优选地，在钻头坯料中形成凹槽作为研磨操作的一部分。

公开(公告)号：US4563045A

公开(公告)日：1986-01-07

申请号：US628628

申请日：1984-07-06

申请人： Ichiro Katayama

发明人： Ichiro Katayama

IPC分类号： F16C29/00 ,  F16C29/06 ,  F16C33/50

CPC分类号： F16C29/0619 ,  F16C29/008 ,  F16C29/0626 ,  F16C29/0673 ,  F16C33/50

摘要： The present invention provides a bearing unit which comprises a bearing unit body mounted on a sliding unit, a plurality of guiding surfaces including a guiding surface being formed on said bearing unit body so as not to intersect another guiding surface, and a plurality of roller units having a plurality of rolls endlessly connected to each other and being provided on said guiding surfaces such that said rolls of the roller units are rotatably in contact with the guiding surfaces and each of said roller units are not in contact with each other. The invention further provides a sliding device which employs effectively the above described bearing unit to perform the high performance sliding operation.

摘要翻译： 本发明提供一种轴承单元，其包括安装在滑动单元上的轴承单元主体，多个引导表面，其包括形成在所述轴承单元主体上的引导表面，以便不与另一个引导表面相交，以及多个滚子单元 具有多个彼此不连续地连接并且设置在所述导向表面上的辊，使得所述辊单元的所述辊可旋转地与所述引导表面接触，并且每个所述辊单元彼此不接触。 本发明还提供一种滑动装置，其有效地使用上述轴承单元来执行高性能的滑动操作。

公开(公告)号：US20060009134A1

公开(公告)日：2006-01-12

申请号：US11174520

申请日：2005-07-06

申请人： Ichiro Katayama

发明人： Ichiro Katayama

IPC分类号： B24B1/00

CPC分类号： B24D7/18 ,  B24B9/065

摘要： The present invention provides the grinding wheel, the grinding apparatus and the grinding method of the present invention so that increase in the size of the grinding apparatus can be suppressed, and the back surface grinding of the wafer and the grinding of the peripheral edge part of the wafer are performed at the same time, whereby the peripheral edge part of the extremely thin wafer is prevented from being sharpened, and cracking and chipping of the wafer peripheral edge part can be prevented.

摘要翻译： 本发明提供了本发明的砂轮，研磨装置和研磨方法，从而可以抑制研磨装置的尺寸的增加，并且晶片的背面研磨和周边边缘部分的磨削 同时执行晶片，从而防止极薄晶片的周边部分被锐化，并且可以防止晶片周边部分的破裂和碎裂。

公开(公告)号：US06613999B2

公开(公告)日：2003-09-02

申请号：US10001831

申请日：2001-11-19

申请人： Ichiro Katayama ,  Hideo Wakui

发明人： Ichiro Katayama ,  Hideo Wakui

IPC分类号： B23K904

CPC分类号： B23K11/20 ,  B23K11/115

摘要： A method of joining a sintered hard alloy member 1 such as a cylindrical rod-shaped twist drill bit blank made of material whose main component is tungsten carbide to a softer metal member such as a stainless steel shank 2 includes the steps of connecting the hard alloy member 1 and the metal member 2 to separate electrodes 3 and 4, applying a longitudinally directed force couple to the hard alloy member 1 and metal member 2 to press end faces of the members together to form an electrically conductive contact region, and passing a pulse of current through electrodes 3 and 4 of sufficient energy to melt the two end face regions of the members, thereby welding them together. Preferably, the end face of the metal member has a convex conical shape.

公开(公告)号：US5443337A

公开(公告)日：1995-08-22

申请号：US85078

申请日：1993-07-02

申请人： Ichiro Katayama

发明人： Ichiro Katayama

IPC分类号： B23B27/14 ,  B23B51/00 ,  B23B51/02 ,  B23B51/10 ,  B23P15/28 ,  E21B10/44 ,  E21B10/56 ,  E21B10/567 ,  E21B10/58

CPC分类号： E21B10/5676 ,  B23B27/146 ,  B23B51/009 ,  B23B51/02 ,  B23B51/108 ,  B23P15/28 ,  E21B10/44 ,  E21B10/58 ,  B23B2226/125 ,  B23B2226/315 ,  B23B2240/08 ,  B23B2251/50 ,  Y10S76/12 ,  Y10T407/26 ,  Y10T408/81 ,  Y10T408/9097

摘要： A drill bit for cutting hard and abrasive materials has cutting lips formed from sintered polycrystalline diamond (PCD) or polycrystalline cubic boron nitride (PCBN) contained in one or more inserts installed in a drill bit blank. The inserts are made by forming depressions in the upper surface of a matrix slab of tungsten carbide, filling the depressions with fine mesh grains of diamonds or cubic born nitride, subjecting the slab to heat and pressure sufficient to fuse the grains to one another and to the surrounding matrix walls, and then cutting the matrix slab to remove individual inserts containing an elongated vein having an exposed PCD or PCBN surface supported by at least one and preferably two or more side walls of tungsten carbide. A rectangular slot having side walls parallel to one another and equidistant from the diameter of a cylindrical drill bit blank is cut into one transverse end wall of the blank, and one or more inserts placed in the slot. The tungsten carbide walls of the inserts are then brazed to the adjacent side walls of the slot. The bit is then ground to a desired configuration, in which PCD or PCBN material forms at least part of at least one cutting lip of the finished drill bit. Preferably, flutes are formed in drill bit blank as part of the grinding operation.