A rotor having an axial direction includes at least a pair of rotor cores arranged in the axial direction, and a field magnet located between the rotor cores and magnetized in the axial direction. Each of the rotor cores includes a plurality of claw poles extending in the axial direction. Each of the rotor cores includes a magnetic flux controlling section, which appropriately causes a magnetic flux to flow to the claw poles.

Rotor and motor

A method for reducing an effect of a video artifact includes adjusting a phase of a second imaging device's video clock signal so that a phase of the second imaging device's video synchronization signal matches a phase of a first imaging device's video synchronization signal. An endoscopic system includes a first imaging device, a second imaging device, a light source, and a controller that reduces an artifact in an image produced by the first imaging device. In some embodiments, the first imaging device faces the light source.

Device and method for reducing effects of video artifacts

Effect of micro ploughing during fine particle peening process on the microstructure of metallic materials

A toroidal type continuously variable transmission includes an input disk mounted on an input shaft; an output disk mounted on an output shaft; and a pair of power roller bearings each of which includes an inner race, an outer race, and a plurality of rolling elements. The inner races are engaged with the input and output disks to transmit the power of the input shaft to the output shaft. The inner races, outer races, input disk and output disk are made of case hardening steel, and are each subjected to a heat treatment in which carburizing or carbonitriding, hardening and tempering are performed sequentially, and then to shot peening, and finished by grinding of a predetermined grinding portion.

Toroidal type continuously variable transmission parts having increased life

Sliding–rolling contact fatigue and wear of maraging steel roller with ion-nitriding and fine particle shot-peening

A distributor constructed by providing a silicon coating on a surface of a rotor brush thereof. Only the end surface of the rotor brush is coated, employing an ion-plating coating method.

Distributor rotor electrode having silicon coating for suppressing peaks of capacity discharge current

The shot velocity in two pneumatic shot-peening machines has been examined by means of experiment and theory. The shot velocity was measured under various operating conditions by a high-speed shutter TV camera. As a result, the shot velocity over the usual range of shot diameter D, shot density p, and air-pressure p was related by the formula, V=K·Dα·ρβ·(p+pb)γ, where Pb is atmospheric pressure. α and β are almost independent of the shot-peening machine, and α a 0.36, β a 0.48, K and γ are dependent on the shot-peening machine. On the other hand, the theoretical consideration based on hydrodynamics tied to the derivation of the formula, V=K·D-0.44·ρ-0.44·(p+pb)0.43 for the suction type machine, and almost the same formula for the direct-pressure type. The theoretically derived formula coincided well with the experimentally induced formula.

Measurement and Analysis of Shot Velocity in Pneumatic Shot Peening.

A brightening chemical polishing solution for a hardened steel article (e.g., a carburized and quenched gear) comprises hydrofluoric acid having a molar concentration of from 0.2 to 2 mol/l, hydrogen peroxide having a molar concentration of from 0.4 to 4 mol/l, and water, a molar ratio of the hydrofluoric acid to the hydrogen peroxide being from 1:1.5 to 1:2.8. The steel article is quench hardened and is chemically polished in the solution. A shot-peening is additionally performed, prior to the polishing.

Brightening chemical polishing solution for hardened steel article and method of chemically polishing said article in the solution

A method of manufacturing a corrugated tube is disclosed, wherein an axial load is applied from both ends of a primary tube (1) while locally heating the primary tube by use of a high frequency coil (34) in the peripheral direction, and the heated portion is thereby bulged. The application of load is stopped almost concurrently with termination of the heating process. The heated portion is forcibly cooled with a cooling liquid, thus molding one crest. Then the primary tube (1) and the high frequency coil (34) are relatively moved. The next crest is formed by repeating the foregoing steps. Such operations are consecutively repeated in the axial direction of the primary tube, thereby obtaining a corrugated tube formed with crests having a large amount of bulge and a small pitch. Apparatus for molding a corrugated tube is also disclosed.

Method of manufacturing corrugated tube and molding apparatus thereof

Research has been conducted on a gas carburizing atmosphere system for better quality control and energy savings. In this paper a new and excellent catalyst for producing endothermic gas at low temperatures is introduced. The conventional endothermic gas catalysts, such as a nickel catalyst, are used in a space velocity (SV) of 400–600/hr at a high temperature (about 1100° C). The new catalyst can be used in a high space velocity of 6000–12000/hr at a lower temperature (about 950° C). The composition of the new catalyst is cobalt supported on an alumina magnesia spinel. The catalyst was examined under various severe conditions. As a result, the catalyst’s deterioration was almost never observed under normal operating conditions (SV: 12000/hr, 930° C). The durability tests using various practical reforming furnaces were successfully conducted from 6–16 months. The higher efficiency and lower operating temperature of this new process results in an electrical energy savings of about 40%.

Mineo Ogino

Papers

Distributor rotor electrode having silicon coating for suppressing peaks of capacity discharge current

Measurement and Analysis of Shot Velocity in Pneumatic Shot Peening.

Brightening chemical polishing solution for hardened steel article and method of chemically polishing said article in the solution

Method of manufacturing corrugated tube and molding apparatus thereof

A new catalyst system for endothermic gas production.