Patent application number | Description | Published |
20090090007 | Method of manufacturing gear from metal sheet and the gear manufactured by the method - A gear is manufactured in a half blanking stage, a punching stage and a separating stage. In the half blanking stage, half blanking is performed for a columnar portion of a metal sheet. A part of an outer circumferential surface of the blank is disconnected from the other portion of the sheet, while the other part of the outer circumferential surface of the blank is connected with the other portion of the sheet. In the punching stage, an inner portion of the blank is punched in a punching direction to form teeth on an inner circumferential surface of the blank. In the separating stage, the blank is separated from the other portion of the sheet as a gear toward a separation direction opposite to the punching direction by disconnecting the other part of the outer circumferential surface of the blank from the other portion of the sheet. | 04-09-2009 |
20090158800 | COIL FORMING METHOD, COIL FORMING DIE ASSEMBLY AND COIL MANUFACTURED THEREBY - A coil forming method, a coil forming die assembly and a coil manufactured by the coil forming method are disclosed. The coil forming method comprises conducting preliminary forming work on a coil under a linear state before conducting bending work on the coil. The preliminary forming work including conducting compression work on the coil under the linear state to compress the coil in a region covering a rounded corner portion formed when bending work is conducted to decrease a dimension of the coil in a widthwise direction. The dimension of the coil is decreased in the widthwise direction by the nearly same dimension as that of the coil bulged in the widthwise direction when bending work is conducted in the absence of the preliminary forming work. This prevents the occurrence of bulging of the coil during bending work with an increase in lamination factor. | 06-25-2009 |
20090199393 | METHOD FOR MANUFACTURING CIRCUMFERENTIALLY DEPLOYING TYPE OF STATOR COIL AND MOTOR USING THE STATOR COIL - A stator coil to be wound in and around a stator is manufactured. An insulating-coating conducting wire is bent to alternately provide the wire with slot-held conductor sections held in slots of the stator and a coil-end conductor section mutually connecting the slot-held conductor sections outside the slots. The coil-end conductor section is deployed outside the stator in the circumferential direction thereof. In manufacturing the stator coil, three or more pairs of molds are located along a portion of the wire in its longitudinal direction at predetermined intervals. The coil-end conductor section is formed by moving the molds along a direction allowing paired molds of each mold to come closer to each other, and the slot-held conductor sections is formed by moving the molds, in parallel, in both a direction perpendicular to the longitudinal direction and the longitudinal direction thereof. | 08-13-2009 |
20090249613 | METHOD FOR MANUFACTURING A STATOR COIL FORMED IN A CORRUGATED SHAPE - A first tool set holds a wire covered with an insulation film at a bending point of the wire to protrude the wire from the first tool set. A second tool set holds the protruded portion of the wire. The second tool set is rotated about the first tool set to bend the wire along a wall of the first tool set and to form a boundary corner in the wire at the same radius of curvature as the wall. The wire is released from the second tool set and is moved to place the first tool set at another bending point while protruding from the first tool set. The second tool set is placed at the protruded portion of the wire. When the wire is bent at a predetermined number of bending points and is rounded, a stator coil formed in a corrugated shape is manufactured. | 10-08-2009 |
20090260219 | METHOD OF MANUFACTURING COIL FOR STATOR INCORPORATED IN ROTARY ELECTRIC MACHINE - A method is provided for manufacturing a stator coil for a rotary electric machine, which is formed by winding up a plurality of phase wires. The method includes a shaping step for shaping a plurality of shaped wire members from electrically conductive wires, an integrating step for integrating the plurality of shaped wire members with each other to form an integrated body, and a winding-up step for winding the integrated body about a core member to form a wound body. At the winding-up step, curve forming is performed by plastically deforming turn portions of the integrated body into a curved shape, during conveyance of feeding the integrated body to the core member. | 10-22-2009 |
20100064505 | METHOD OF MANUFACTURING STATOR FOR DYNAMOELECTRIC MACHINE - There is disclosed a method of manufacturing a stator for a dynamoelectric machine. The method includes a step of mounting a hollow cylindrical electric wire assembly, which includes a plurality of straight stacked portions of shaped electric wires, to a hollow cylindrical stator core that includes a plurality of slots formed in the radially inner surface thereof. The mounting step includes: (1) placing the electric wire assembly radially inside of the stator core so that each of the straight stacked portions of the electric wire assembly is radially aligned with a corresponding one of the slots of the stator core; and (2) radially expanding the electric wire assembly to insert the straight stacked portions of the electric wire assembly into the corresponding slots of the stator core. | 03-18-2010 |
20100141078 | STATOR FOR ROTARY ELECTRIC MACHINE AND ROTARY ELECTRIC MACHINE USING SAME | 06-10-2010 |
20110041319 | METHOD OF MANUFACTURING STATOR COIL - A plurality of shaped wires, which are obtained by shaping electric wires, are assembled to form a wire assembly | 02-24-2011 |
20120007462 | Stator for rotary electric machine and rotary electric machine using same | 01-12-2012 |