Abstract: The present invention relates to a coated cutting tool (1) including a substrate (8) and a coating (9) formed on the substrate (8), wherein the coating (9) includes a first coating (10) composed of TiCN and a second coating (11) composed of ?-Al2O3, the first coating (10) is positioned between the substrate (8) and the second coating (11) and has tensile stress S1, the second coating (11) has compressive stress S2, and the tensile stress S1 and the compressive stress S2 are defined by the following equation (I): 400 MPa?|S2?S1|?3500 MPa??(I).

Abstract: A surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) and a second surface (107) of the substrate (104) is A, a difference between the maximum and minimum thicknesses of the coating layer (108) is 0.04×A or less. Also, a surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) of the substrate (104) is B1, and the average thickness of the coating layer (108) on a second surface (107) of the substrate (104) is B2, a value obtained by dividing an absolute difference value between B1 and B2 by a larger value of B1 and B2 is 0.04 or less.

Abstract: A indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers, and at least one layer of the one or more layers covers the entire surface of the substrate and satisfies the relationship F1<F2, wherein F1 represents the residual stress in the rake face (2) and F2 represents the residual stress in the bearing surface (5).

Abstract: The invention relates to a motorcycle engine arrangement which transmits a starting power to a crank shaft from a starter motor via a power transmission mechanism and a one-way clutch. The one-way clutch is installed at one end portion of the crank shaft, and a starter gear or a starter sprocket having a diameter smaller than an outer diameter of a clutch outer member is provided on the crank shaft portion further toward an outer side in an axial length direction of the crank shaft than the clutch outer member of the one-way clutch. Preferably, the clutch outer member is arranged further toward an outer side in the axial length direction of the crank shaft than a sprocket wheel for driving a cam or a gear for driving a cam provided at one end portion of the crank shaft.

Abstract: An indexable cutting insert (1) of the present invention includes at least one face (2), at least two flanks (3), at least one edge line (4), at least one corner (9), and a base layer having a different color from a use-state indicating layer. The use-state indicating layer is formed on at least one of the flanks (3) so that the use-state indicating layer is formed on the base layer over the entire surface or a part of a region A2 excluding at least one region A1 of 2 mm2 containing at least one corner (9).

Abstract: A surface-coated cutting tool comprising a substrate, and a coating formed thereon, characterized in that the coating includes a first coating containing TiCN and a second coating containing ?-type Al2O3, the first coating is interposed between the substrate and the second coating, and the second coating has compressive stress S1 on the rake face and tensile stress S2 on the flank face, with the compressive stress S1 and the tensile stress S2 being defined by the following expression; 441 MPa?|S1?S2|?3500 MPa.

Abstract: An indexable insert according to the present invention includes a substrate and a coating layer formed on the substrate, the coating layer is formed of a plurality of layers including at least a TiCN layer, at least one of the plurality of layers is provided with compressive residual stress, the TiCN layer is mainly composed of TiCN and has highest peak intensity in a (422) plane and second peak intensity in a (311) plane in X-ray diffraction, and a ratio of peak intensity I(422)/I(311) between peak intensity I(422) of the (422) plane and peak intensity I(311) of the (311) plane is not lower than 1.1 and not higher than 10.

Abstract: A coating layer formed from an outermost layer and an inner layer disposed on a substrate surface of a surface coated cutting tool. The inner layer is formed from a periodic table group IVa, Va, VIa metal, Al, Si, B compound. The outermost layer is formed from aluminum nitride or aluminum carbonitride. The outermost layer has a chlorine content of more than 0 and no more than 0.5 atomic percent. The protective coating on the tool surface is made easier to form during cutting by further adding a predetermined amount of chlorine to the film formed from aluminum nitride, which provides thermal stability and lubricity. Lubricity can be increased by using this protective coating.

Abstract: An indexable insert (1) of the present invention includes a substrate (8) and a coating layer which includes inner layer and an outer layer. The inner layer includes an alumina layer or an alumna-containing layer serving as an outermost layer in contact with the outer layer, and the outer layer is composed of at least one metal selected from the group consisting of the periodic table group IVa elements, Va elements, and VIa elements, Al, and Si or a compound of at least one of the metals and at least one element selected from the group consisting of carbon, nitrogen, oxygen, and boron. In addition, the outer layer, in a portion involved in cutting, satisfies B/A?0.9 wherein A ?m is the average thickness on the flank face (3) side, and B ?m is the average thickness on the rake face (2) side.

Abstract: A multiple disc friction clutch comprises a clutch outer for take in power, a clutch hub for take out power, friction plates, a clutch spring pressing a pressing member to the friction plates for connecting the clutch, a spring receiving member supporting the clutch spring, and a coupling hub coupled to the spring receiving member as to be integrally movable. A spline inclined against an output axis is formed in a fitting portion between the coupling hub and a tube shaft, and moves the clutch spring in an axial direction of the tube shaft to a compressing side while relatively rotating the coupling hub against the tube shaft, in the case that an engine drive torque is equal to or more than a predetermined value, thereby increasing a pressing load.

Abstract: Disclosed is a magnesium alloy material which can be produced without the need of employing any specialized production facility or process and has excellent mechanical properties, particularly high elongation. Also disclosed is a process for producing the magnesium alloy material. The magnesium alloy material comprises a Mg—Gd—Zn alloy comprising 1 to 5 mass % of Zn and 5 to 15 mass % of Gd as essential ingredients, with the remainder being Mg and unavoidable impurities, wherein the Mg—Gd—Zn alloy has a long period stacking structure in its alloy structure and also has Mg3Gd and/or Mg3Zn3Gd2. The process for producing the magnesium alloy material comprises a melting/casting step and a forging processing step for subjecting the casted material to a hot forging processing at a predetermined processing rate.

Abstract: Disclosed is a non-heat treated steel for hot forging, particularly suitable for producing connecting rods of automobile engines. The steel consists essentially of: by weight, C: 0.3-0.8%, Si: 0.1-2.0%, Mn: 0.3-1.5%, P: 0.01-0.15%, Cr: 0-1.0%, V: 0-0.4%, Al: 0-0.05%, N: 0.005-0.03% and the balance being Fe and inevitable impurities, provided that the contents of C, Mn and Cr fulfill the following condition: 1.40[C %]+0.28[Mn %]+0.50[Cr %]?0.75 Pearlite area fraction in this steel after hot forging is 50% or more. Notches are provided with laser beam on an intermediate part at the location from which fracture starts, and load is applied. Then, the intermediate is split to be two components (big end or cap and small end/rod for connecting rod). The components are adhered to form the parts.

Abstract: An indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers and satisfies the relationship 0.9>R1/R2, wherein R1 represents the surface roughness Rz of the coating layer in the rake face (2), and R2 represents the surface roughness Rz of the coating layer in the bearing surface (5).

Abstract: A indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers, and at least one layer of the one or more layers covers the entire surface of the substrate and satisfies the relationship F1<F2, wherein F1 represents the residual stress in the rake face (2) and F2 represents the residual stress in the bearing surface (5).

Abstract: The present invention relates to a coated cutting tool (1) including a substrate (8) and a coating (9) formed on the substrate (8), wherein the coating (9) includes a first coating (10) composed of TiCN and a second coating (ii) composed of ?-Al2O3, the first coating (10) is positioned between the substrate (8) and the second coating (11) and has tensile stress S1, the second coating (11) has compressive stress S2, and the tensile stress S1 and the compressive stress S2 are defined by the following equation (I): 400 MPa?|S2?S1|?3500 MPa??(I)

Abstract: An indexable insert (1) according to the present invention has at least a rake face (2) and a seating face (5). The indexable insert (1) includes a substrate and a coating formed on the substrate. The substrate is exposed in the seating face (5) without the coating formed thereon.

Abstract: An indexable insert (1) includes a substrate (8) and a coating layer formed on the substrate. The coating layer includes an inner layer and an outer layer. The inner layer is constituted by a layer containing at least one element selected from the group consisting of Group IVa elements, Group Va elements, and Group VIa elements in the periodic table, and Al and Si. The uppermost layer of the inner layer in contact with the outer layer is composed of a compound at least containing Ti and at least one of nitrogen and boron. The outer layer is constituted by an alumina layer or an alumina-containing layer. In a region involved in cutting, the outer layer satisfies B/A?0.9 where A ?m is the average thickness at the flank face (3) side and B ?m is the average thickness at the rake face (2) side.

Abstract: There is provided an ultrahigh strength steel sheet containing 0.10 to 0.40 mass % of C, 0.01 to 3.5 mass % of Cr, at least one selected from the group consisting of 0.10 to 2.0 mass % of Mo, 0.20 to 1.5 mass % of W, 0.002 to 1.0 mass % of V, 0.002 to 1.0 mass % of Ti and 0.005 to 1.0 mass % of Nb, 0.02 mass % or less of P and 0.01 mass % or less of S as impurities and the balance being Fe and unavoidable impurities based on the total mass of the steel sheet and having a base structure of lower bainite, a prior austenite grain size of 30 ?m or smaller and a tensile strength of 980 MPa or higher. There is also provided an automotive strength part using the ultrahigh strength steel sheet.

Abstract: An indexable cutting insert (1) of the present invention includes at least one face (2), at least two flanks (3), at least one edge line (4), at least one corner (9), and a base layer having a different color from a use-state indicating layer. The use-state indicating layer is formed on at least one of the flanks (3) so that the use-state indicating layer is formed on the base layer over the entire surface or a part of a region A2 excluding at least one region A1 of 2 mm2 containing at least one corner (9).

Abstract: A hybrid vehicle is provided in which, since the driving force of a generator/motor (M1) is transmitted to the downstream side of an output shaft (17) of a transmission (T) without going through an input shaft (16) thereof and the output shaft (17), it is possible to carry out the so-called leg shaft drive, which prevents the driving force of the generator/motor (M1) from dragging along an engine (E), the input shaft (16), and the output shaft (17), thus reducing power consumption and enhancing energy recovery efficiency during regenerative braking. Furthermore, since the generator/motor (M1) is disposed at a position sandwiched between the engine (E) and the transmission (T), it is possible to employ the same layout for the generator/motor (M1) as for a conventional sandwiched generator/motor type, and the leg shaft drive system can be employed without greatly modifying the design of the transmission (T).