摘要:
A sliding guide apparatus guides a movable member for a base. A pair of guide surfaces (3) is formed on the base (2). A pair of sliding surfaces is formed on the movable member as so to be opposed to the pair of guide surfaces, respectively. Lubricating oil is supplied between the guide surface and the sliding surface. The sliding surface is configured so that one half portion (12A) of the sliding surface which is close to the center of gravity of the movable member is asymmetric with the other half portion (12B) of the sliding surface which is far from the center of gravity of the movable member. Since load of the movable member that acts disproportionately on the sliding surface is balanced with dynamic pressure of the lubricating oil that occurs between the guide surface and the sliding surface, it is prevented that the movable member is slanted.
摘要:
A friction clutch has a plurality of iron inner clutch plates and a plurality of iron outer clutch plates. Both the clutch plates have sliding surfaces which are friction-engaged each other. A thin carbon film in a diamond form, which functions as a solid lubricant, is formed on each of the sliding surfaces of the outer clutch plates by a known method such as the Chemical Vapor Deposition method. A known nitride treatment or quenching and tempering treatment is applied to the sliding surfaces of the inner clutch plates. A coupling device has a pilot clutch mechanism with the friction clutch and an electromagnetic actuator. As a result, the friction clutch is resistant to wear and the coupling device is excellent in durability.
摘要:
A friction clutch has a plurality of iron inner clutch plates and a plurality of iron outer clutch plates. Both the clutch plates have sliding surfaces which are friction-engaged each other. A thin carbon film in a diamond form, which functions as a solid lubricant, is formed on each of the sliding surfaces of the outer clutch plates by a known method such as the Chemical Vapor Deposition method. A known nitride treatment or quenching and tempering treatment is applied to the sliding surfaces of the inner clutch plates. A coupling device has a pilot clutch mechanism with the friction clutch and an electromagnetic actuator. As a result, the friction clutch is resistant to wear and the coupling device is excellent in durability.
摘要:
A crankpin 1 of a crankshaft rotatably supports a big end of a connecting rod 4 through a sliding bearing 5 fitted therein. The sectional profile of the crankpin 1 takes the form of a polygon whose profile is made of plural arcs of curvature. When the crankpin 1 rotates relative to the bearing 5, the wedge effect is generated to decrease the squeeze loss, a kind of the power loss. And, the oil film thickness between the crankpin 1 and the bearing 5 is secured to prevent the shear loss, another kind of the power loss, from increasing, whereby the power loss can be decreased in total.
摘要:
A crankpin 1 of a crankshaft rotatably supports a big end of a connecting rod 4 through a sliding bearing 5 fitted therein. The sectional profile of the crankpin 1 takes the form of a polygon whose profile is made of plural arcs of curvature. When the crankpin 1 rotates relative to the bearing 5, the wedge effect is generated to decrease the squeeze loss, a kind of the power loss. And, the oil film thickness between the crankpin 1 and the bearing 5 is secured to prevent the shear loss, another kind of the power loss, from increasing, whereby the power loss can be decreased in total.
摘要:
A steel material for a high strength constant velocity joint intermediate shaft containing C: 0.46 to 0.52%, Si: 0.6 to 0.8%, Mn: 0.7 to 0.9%, S: 0.01 to 0.05%, Mo: 0.3 to 0.5%, B: 0.0005 to 0.005%, Al: 0.002 to 0.05%, and Ti: 0.02 to 0.09%, restricting N to 0.007% or less, Cr to 0.15% or less, and P to 0.02% or less, having a structural percentage of bainite + martensite of 40% or more, and having a hardness of 250 to 340HV and a high strength constant velocity joint intermediate shaft made of that steel material, having a spline-vanishing part with a surface hardness of 610 to 750HV and a ratio t/r of an effective hardened layer depth t and radius r of 0.35 to 0.55, having a flat part with a surface hardness of 630 to 770HV and a ratio t/r of an effective hardened layer depth t and radius r of 0.55 to 1.0, and having a core hardness of 250 to 340HV.
摘要翻译:C:0.46〜0.52%,Si:0.6〜0.8%,Mn:0.7〜0.9%,S:0.01〜0.05%,Mo:0.3〜0.5%的高强等速万向节中间轴用钢材,B: 0.0005〜0.005%,Al:0.002〜0.05%,Ti:0.02〜0.09%,N:0.007%以下,Cr:0.15%以下,P:0.02%以下,贝氏体+ 40%以上的马氏体,硬度为250〜340HV,由该钢材制成的高强度等速万向节中间轴,具有表面硬度为610〜750HV的花键消失部,比率t / r 的有效硬化层d
摘要:
A semi-contact guide apparatus includes a bed as a first member, a column (12) second member, a plural number of oil-hold portions and an oil-supply device. The column is movably guided on the bed (2). A sliding surface is formed on the column. The plural number of oil-hold portions is formed on the sliding surface. Dimensions of the oil-hold portions are defined according to load distribution of the weight of the column. The oil-supply device supplies lubricant oil to the oil-hold portions. The amount of lubricant oil supplied to the oil-hold portion is defined according to each of dimensions of the oil-hold portions. Since the dimensions such as areas of the oil-hold portions and the amount of the lubricant oil supplied to the oil-hold portion are defined as above, inclination of the column on the bed is prevented, and the column can be smoothly moved on the bed.