Abstract: A rotating electrical machine may include a stator and a rotor. The stator may include a plurality of iron cores and a plurality of windings. The plurality of windings may include a first phase winding, a second phase winding, and a third phase winding connected in a delta connection. The first phase winding, the second phase winding, and the third phase winding may each be connected in series with a respective crossover wire. The first and third phase windings may be wound in a first winding direction. The second phase winding may be wound in a second winding direction. A first crossover wire connecting the first phase winding and/or a third crossover wire connecting the third phase winding may be arranged on a first side of the stator. A second crossover wire connecting the second phase winding may be arranged on a second side of the stator.

Abstract: The invention relates to a method for detecting an abnormality of a temperature sensor. A plurality of temperature sensors are preliminarily grouped for each of predetermined attachment areas of a machine tool, and after a temperature of each part is measured in S1, the detected temperatures are classified in S2 for each of the grouped attachment areas, and then sorted in descending order in S3. Subsequently, a difference ?T between any closest two of the detected temperatures is obtained in S4, and then compared with a preset limit value ? in S5, when ?T exceeds the limit value ?, temperature sensors in a corresponding attachment area are determined abnormal in S6, and an alarm is displayed.

Abstract: A magneto rotor which has a cup-like rotor yoke, a plurality of magnets secured on an inner periphery of a peripheral wall portion of the rotor yoke, and a magnet protecting cover having a cylindrical portion that covers inner peripheries of the magnets, and an outer flange being integrated with one axial end of the cylindrical portion and covering end surfaces of the magnets, wherein an annular protrusion protruding toward the opening of the rotor yoke is formed on an area closer to an inner periphery of the outer flange of the magnet protecting cover, an annular adhesive storage portion is formed between the peripheral wall portion closer to the open end of the rotor yoke and the annular protrusion, a groove opening into the adhesive storage portion and continuing circumferentially of the rotor yoke is also formed in the peripheral wall portion closer to the open end of the rotor yoke, and the adhesive storage portion and the groove are filled with an adhesive to seal a boundary between the outer flange of

Abstract: The invention enables an abnormality of a temperature sensor to be simply detected. In S1, a temperature measurement is performed with each temperature sensor, and measured signals are digitalized to obtain a temperature value. Then, in S2, a detection temperature Tb? equivalent to a detected temperature of a corresponding temperature sensor is calculated with use of an arithmetic expression and a characterization factor stored in a parameter storage device, and in S3, an absolute value ?T of a temperature difference between Ta and Tb? is obtained. Subsequently, in S4, the calculated absolute value ?T is compared with a limit value ?, and when ?T is larger than the limit value ?, Ta or Tb is determined to be abnormal and an alert is issued with an alarm or the like in S5, followed by issuance of a command to a correcting device in S6 not to change a correction amount set before the abnormality occurs.

Abstract: A magneto rotor in which a plurality of magnets are secured on an inner periphery of a peripheral wall portion of a cup-like rotor yoke, and a magnet protecting cover is provided that integrally has a cylindrical portion that covers inner peripheries of the magnets, and an outer flange that is formed at one axial end of the cylindrical portion and covers end surfaces of the magnets, wherein an annular protrusion protruding toward the opening of the rotor yoke is formed on an area closer to an inner periphery of the outer flange of the magnet protecting cover, an annular adhesive storage portion is formed between the peripheral wall portion closer to the open end of the rotor yoke and the annular protrusion, a groove opening into the adhesive storage portion and continuing circumferentially of the rotor yoke is also formed in the peripheral wall portion closer to the open end of the rotor yoke, and the adhesive storage portion and the groove are filled with an adhesive to seal a boundary between the outer flan

Abstract: The invention relates to a method for detecting an abnormality of a temperature sensor. A plurality of temperature sensors are preliminarily grouped for each of predetermined attachment areas of a machine tool, and after a temperature of each part is measured in S1, the detected temperatures are classified in S2 for each of the grouped attachment areas, and then sorted in descending order in S3. Subsequently, a difference ?T between any closest two of the detected temperatures is obtained in S4, and then compared with a preset limit value ? in S5, when ?T exceeds the limit value ?, temperature sensors in a corresponding attachment area are determined abnormal in S6, and an alarm is displayed.

Abstract: The invention enables an abnormality of a temperature sensor to be simply detected. In S1, a temperature measurement is performed with each temperature sensor, and measured signals are digitalized to obtain a temperature value. Then, in S2, a detection temperature Tb? equivalent to a detected temperature of a corresponding temperature sensor is calculated with use of an arithmetic expression and a characterization factor stored in a parameter storage device, and in S3, an absolute value ?T of a temperature difference between Ta and Tb? is obtained. Subsequently, in S4, the calculated absolute value ?T is compared with a limit value ?, and when ?T is larger than the limit value ?, Ta or Tb is determined to be abnormal and an alert is issued with an alarm or the like in S5, followed by issuance of a command to a correcting device in S6 not to change a correction amount set before the abnormality occurs.

Abstract: An outer-rotor-type magneto generator comprising: a magnet rotor having a cup-shaped rotor yoke and permanent magnets bonded to an inner surface of a periphery wall portion of the rotor yoke; and a stator having an armature core and armature coils wound around salient pole portions of the armature core, wherein a plurality of protrusions and recesses are arranged alternatively in a peripheral direction on an inner periphery of the peripheral wall portion of the rotor yoke, and the permanent magnets are bonded on stator sides of each protrusions.

Abstract: A thermal displacement correction method is provided, including the steps of presetting coordinate data for a fixed position of a workpiece on a table, finding an amount of displacement of the fixed position of the workpiece at a current cutting edge position based on the detected temperature, the coordinate data of the cutting edge position, and the coordinate data of the fixed position, and computing a difference in the coordinate data between the fixed position of the workpiece and the cutting edge position, finding an amount of displacement of the workpiece between its fixed position and the cutting edge position based on the detected temperature and the difference in the coordinate data between the fixed position and the cutting edge position, and computing a sum of each amount of displacement to define an estimated value and correcting thermal displacement using an NC unit based on the estimated value.

Abstract: A flywheel magnet rotor comprising: a flywheel having a peripheral wall portion and a bottom wall portion formed with a boss in a center thereof, and formed with vent holes passing through the bottom wall portion in an area surrounding the boss in the bottom wall portion; a permanent magnet or magnets secured to an inner periphery of the peripheral wall portion of the flywheel; and a magnet protecting cover that comprises an annular outer flange at one axial end and an annular inner flange at the other axial end and covers the permanent magnet or magnets inside the flywheel, an annular water shutoff ridge surrounding the boss outside the area formed with the vent holes are provided inside the bottom wall portion of the flywheel, the magnet protecting cover is placed so that the outer flange covers an axial end surface of the magnet or magnets on a side of an opening of the flywheel and the inner flange surrounds the water shutoff ridge from outside.

Abstract: A thermal displacement correction method includes the steps of: presetting the coordinate data of a fixed position of the workpiece on a table; finding an amount of displacement of the fixed position of the workpiece at a current cutting edge position based on the detected temperature, the coordinate data of the cutting edge position, and the coordinate data of the fixed position; computing the difference in the coordinate data between the fixed position of the workpiece and the cutting edge position; finding an amount of displacement of the workpiece between its fixed position and the cutting edge position based on the detected temperature and the difference in the coordinate data between the fixed position and the cutting edge position, and computing a sum of each amount of displacement to define an estimated value and correcting thermal displacement using an NC unit based on the estimated value.

Abstract: A toothed belt and belt-adapted pulley system provides a high-load capacity and increased durability by reducing stress concentrations on dedendum portions and further preventing localized bending of belt tensile cords. Smooth engagement of elastic teeth of a belt is possible due to minimization of interference between the elastic teeth upon engagement or disengagement with a pulley. Reduced vibration, low noise, and a reduction in skipping under high loads result from the inventive system. Each tooth of the belt has a peripheral length m.sub.0 and a dedendum portion with a length m.sub.1, where m.sub.1 /m.sub.0 is 0.1 or less. Each tooth of the pulley has a peripheral length n.sub.0 and a dedendum portion having a length n.sub.1, where n.sub.1 /n.sub.0 is 0.1 or less.

Abstract: A reclining chair having a collapsible construction in which a chair body composed of a back-rest and seat portion pivotally coupled to each other is rotatably pivoted onto a stool composed of frame members in such a manner that said back-rest can be adjusted to a desired angle of inclination with a longitudinal movement of said seat portion interlocked therewith when the reclining chair is extended for use, while said back-rest can be folded onto said seat portion and brought down together therewith to a position between said frame members in the folded position thereof when the reclining chair is not used, with intermediately folded positions being available, as desired, for a tentative storage thereof.

Abstract: A recording time clock whose housing has an orifice for insertion of a time card and another orifice in which a punched coding plate may be inserted. A reading device reads the code of perforations in the coding plate and sets a code printing wheel in the printing mechanism of the clock for printing a code symbol simultaneously with the hour and minute on an inserted time card.