| Patent Number |
Title Of Patent |
Date Issued |
| D317862 |
Bolt |
July 2, 1991 |
|
| 7618219 |
Ball endmill |
November 17, 2009 |
| A ball endmill having (a) a cylindrical tool body and (b) ball-nosed end cutting edges each of which includes (b-1) a first portion, (b-2) a second portion and (b-3) a third portion. The first portion is defined by a circular arc which is convex in a direction of rotation of the tool |
| 7504149 |
Hard multilayer coating, and hard multilayer coated tool including the hard multilayer coating |
March 17, 2009 |
| A hard multilayer coating that is to be disposed on a body, including: (a) a first coating layer disposed to be held in contact with the body, the first coating layer consisting of TiAlCrX.sub.1-aN.sub.a (wherein "X" represents carbon or oxygen, and "a" represents a mixed crystal ratio |
| 7478977 |
Ball endmill |
January 20, 2009 |
| A ball endmill having a cylindrical tool body and ball-nosed end cutting edges each of which includes a first portion and a second portion continuous to the first portion. The first and second portions are located at a radially inner portion of each ball-nosed end cutting edge in a d |
| 7431988 |
Hard coating and machining tool disposed with hard coating |
October 7, 2008 |
| A hard coating that is to be disposed on a surface of a body includes a diamond layer which includes a plurality of diamond grains and is doped with boron, and an outer layer which includes an intermetallic compound and is disposed on the diamond layer by a physical vapor deposition |
| 7422396 |
Drill having construction suitable for enlarging previously formed hole |
September 9, 2008 |
| A drill which includes a cylindrical main body and a shank contiguous to each other, and which is to be rotated about an axis of the cylindrical main body in a predetermined rotating direction, for enlarging a hole previously formed in a workpiece through a die-casting process. The c |
| 7392680 |
Rolling die and method for forming thread or worm and spline having small number of teeth by rol |
July 1, 2008 |
| There is provided a rolling die and a method for forming a thread or worm and a spline having a small number of teeth whose number is thirteen or less simultaneously by rolling. By use of rolling dies, the formation of a worm by rolling by use of a thread rolling die starts, and after th |
| 7377732 |
Thread mill having flute twisting in direction opposite to rotating direction |
May 27, 2008 |
| A thread mill that is to be moved along a helical interpolation path while being rotated about an axis of the thread mill in a rotating direction, for forming a thread in a circumferential surface of a workpiece. The thread mill includes a cylindrical main body having (a) at least one |
| 7320566 |
Cutting tool including detachable cutter head |
January 22, 2008 |
| A cutting tool including a cutter head and a holder. One of the cutter head and the holder has a recess formed in its axial end portion and defined by its circumferential wall. The other of the cutter head and the holder has a protrusion formed in its axial end portion, such that the |
| 7293945 |
Non-rotary cutting tool and process of machining scroll member by using the same |
November 13, 2007 |
| A non-rotary cutting tool which is to be moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpendicular to the predetermined direction. The cutting tool includes (a) a generally cylindrical shank portion, an |
| 7237992 |
Process of machining scroll member by using non-rotary cutting tool |
July 3, 2007 |
| A process of machining a scroll member of a scroll compressor by using a non-rotary cutting tool. The non-rotary cutting tool is moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpendicular to the predeter |
| 7165922 |
Cutting tool assembly having construction enabling cutting tool to have large diameter |
January 23, 2007 |
| A cutting tool assembly including: (a) an arbor including a tapered shank portion which has a taper of 7/24 and a size of No. 30; (b) a cutting tool having at least one cutting blade and fastened to the arbor; (c) a fastener for fastening the cutting tool to the arbor; and (d) a rela |
| 7097395 |
Chip-breaking tool for tapping and female thread processing method |
August 29, 2006 |
| Since the chip-breaking groove 30 is cut in the inner peripheral surface of the prepared hole 22 by compressing the chip-breaking tool 10 into the prepared hole 22 prior to the tapping process (the cutting process of the female thread) by the cut tap, the chip can be securely broken by t |
| 7033643 |
Process of manufacturing a coated body |
April 25, 2006 |
| A process of manufacturing a coated body including a substrate and a hard coating disposed on the substrate, wherein the hard coating has (a) a surface smoothed to have a roughness with maximum height Rz of not larger than 1.2 .mu.m, and (b) recesses each of which has a size of 0.5 6.0 |
| 7008688 |
Hard multilayer coating, hard multilayer coated tool including the hard multilayer coating, and |
March 7, 2006 |
| A hard multilayer coating which is to be disposed on a surface of a substrate, including at least one first coating layer and at least one second coating layer which are alternately superposed on each other, wherein each of the at least one first coating layer consists of (Ti.sub.x A |
| 6997651 |
End mill having different axial rake angles and different radial rake angles |
February 14, 2006 |
| An end mill including a cylindrical body having (a) flutes each formed in the cylindrical body and each extending from an axially distal end of the cylindrical body toward an axially proximal end of the cylindrical body, (b) peripheral cutting edges each provided by one of widthwise oppo |
| 6997085 |
Threaded-fastener wrenching structure, threaded fastener and wrenching tool |
February 14, 2006 |
| A threaded fastener capable of being reduced in size and weight. A pair of side wall surfaces of each of six radially outwardly projecting, torque transmitting portions lie on straight lines passing through the center line in a cross section perpendicular to the center line so as to |
| 6715966 |
Rotary cutting tool having corrugated cutting edge portion whose pitch and/or depth are/is incre |
April 6, 2004 |
| A rotary cutting tool which is to be rotated about an axis thereof for cutting a workpiece, including: a generally cylindrical body portion having (a) at least one flute each of which is formed in the cylindrical body portion and each of which extends from an axially distal end of the |
| 6685573 |
Thread forming tap |
February 3, 2004 |
| A thread forming tap which is capable of reducing tapping torque as well as improving durability by avoiding an increase of an apparent area of margins of external thread that causes interference with a grinding stone. The thread forming tap has an external thread in a screw shape with |
| 6656591 |
Diamond-coated body including interface layer interposed between substrate and diamond coating, |
December 2, 2003 |
| A diamond-coated body including: a substrate formed of a cemented carbide; a diamond coating; and an interface layer interposed between the substrate and the diamond coating, wherein the interface layer consists of a solid solution including an aluminum nitride and a metal which belongs |
| 6610611 |
Method of removing diamond coating and method of manufacturing diamond-coated body |
August 26, 2003 |
| A method of removing a diamond coating from a substrate of a diamond-coated body which includes the substrate coated with the diamond coating. The method includes a step of heating the diamond-coated body at a predetermined temperature in a reactor at a predetermined reduced pressure |
| 6547494 |
Diamond coated tool and method of manufacturing the diamond coated tool |
April 15, 2003 |
| A diamond-coated tool including: (a) a substrate; and (b) a diamond coating disposed on the substrate. The diamond coating is formed of diamond crystals grown on the substrate. Each of the diamond crystals has a diameter not larger than 2 .mu.m as measured on an outer surface of the |
| 6517688 |
Method of smoothing diamond coating, and method of manufacturing diamond-coated body |
February 11, 2003 |
| A method of smoothing a surface of a diamond coating of a diamond-coated body, by using an arc-type ion plating device in which at least one target is disposed. The method includes: (a) a step of causing arc discharge between an anode, and a cathode which is provided by each of the a |
| 6516650 |
Rolling dies for producing dog point threads |
February 11, 2003 |
| A thread rolling dies for producing dog point threads is capable of preventing slips of an outer surface of screw blank when rolling, thereby avoiding breakage of the dog point thread. The dog point thread has a thread portion provided with external threads and a dog point having an |
| 6309738 |
Hard multilayer coated tool having increased toughness |
October 30, 2001 |
| A hard multilayer coated tool including: (a) a substrate; and (b) a multilayer coating covering the substrate, the multilayer coating comprising first and second coating layers which are alternately laminated on the substrate, each of the first coating layers having and average thick |
| 6217267 |
Cold forming tap having internal finish cutting edge and method of producing the same |
April 17, 2001 |
| A cold forming tap with an internal finish cutting edge includes an external thread portion having radially outwardly protruding portions and relief portions which are alternately located in a helical direction in which an external thread extends. The protruding portions are forced into |
| 6213693 |
Taper taps for pipe threads made of hard material |
April 10, 2001 |
| A high durability taper tap for pipe threads which can cut threads in a pipe made of hard materials having hardness of approximately 50 HRC. The sum .SIGMA..gamma. of the width angle of cutters is large, approximately 130.degree., thereby achieving high strength and rigidity are achieved |
| 6164877 |
Formed rotary cutting tool having varying diameter and constant clearance angle, and method of f |
December 26, 2000 |
| A formed rotary cutting tool including; a generally cylindrical body portion having (a) a plurality of flutes which are formed in the body portion to generally axially extend and which are located around the axis so as to be angularly spaced apart from each other, and (b) cutting edges |
| 5733078 |
Drilling and threading tool |
March 31, 1998 |
| A drilling and thread-milling tool for generating an internal thread in a workpiece, including a proximal shank portion attachable to a driving device for rotating the tool about a rotation axis thereof, and a distal cutting portion rotated with the shank portion about the rotation axis |
| 5379622 |
Method of forming helical splines with stoppers on a rotary shaft, and rolling tools for practic |
January 10, 1995 |
| In forming helical splines with stoppers on a rotary shaft, its large-diameter portion is held between a pair of rolling tools, each of which comprises: a helical teeth forming die having inclined teeth; an aligning teeth die having aligning teeth which are aligned with every other i |
| 5358366 |
Screw and thread rolling die |
October 25, 1994 |
| A screw having a main thread (2) to be screwed in and a sub-thread (3) formed in the direction opposite to the main thread, which is characterized in that a slant surface (3b) of the sub-thread on the screw-loosening side has a sharp slope whereas that (3a) on the screw-tightening si |
| 5137407 |
Head drive for threaded fastener |
August 11, 1992 |
| A threaded fastener having a recess or projection in a head for engagement with a jointing equipment is disclosed. The recess or projection is composed of a center portion and radial portions extending radially outward of circumference of the center portion. Each of the radial portio |
| 4860497 |
Drill grinder having drill holder including chucks for gripping shank and body of the drill |
August 29, 1989 |
| A drill grinder for grinding a point of a drill including a shank, and a body which has the point. The drill grinder includes a holding device for removably holding the drill, and a grinding wheel adapted to be forced on the drill point, and to thereby grind the point while the drill is |
| 4646549 |
Apparatus for rolling a cylindrical blank |
March 3, 1987 |
| Method and apparatus for rolling a cylindrical blank in pressed contact with shaped rolling or die faces of rolling dies to generate, on the periphery of the blank, plural teeth corresponding to a profile of the die faces of the dies. The blank is rolled bidirectionally on the die faces |
