Abstract: A rotor for an electric motor includes a shaft having a central portion supporting a laminated core of an electrical sheet material. The central portion is also composed of an electrical sheet material. The ends of the rotor shaft may be formed from a different material than the material of the central portion, and may be connected to the central portion by a force-fitting interference fit and/or a knurled interference fit. An electric motor having such a rotor and a method for producing a such a rotor are provided.

Abstract: The invention relates to a method for producing a lens for an ultrasound apparatus, as well as to an apparatus comprising the lens. The method comprises choosing a source point, providing a treatment volume situated inside a bone tissue model, providing a plurality of nodes distributed inside the treatment volume, and simulating the emission of a spherical wave from each of the nodes. Thus, a simulated wave front is created, in which each spherical wave has an amplitude and a phase, there being at least two nodes with different amplitudes and/or phases. The simulated wave front is received on a receiving surface. On the basis of the processed results, a holographic lens surface is designed, which can generate a wave pattern equivalent to the simulated wave.

Abstract: A rotor includes a rotor core configured by laminated steel plates and a magnet insertion hole extending along an axial direction of the rotor core, with a resin interposed between a permanent magnet placed in the magnet insertion hole and an inner wall face of the magnet insertion hole. In a manufacturing method for this rotor, in a first process, the permanent magnet and the resin are integrated together to manufacture a resin-coated permanent magnet. Next, in a second process, the resin-coated permanent magnet is press-fitted into the magnet insertion hole. Next, in a third process, the post-second-process rotor core is heated to a temperature that is at least the temperature at which the resin softens. Next, in a fourth process, the post-third process rotor core is cooled.

Abstract: A method for producing a composite element is provided. The method includes providing an outer frame comprising metal and having a first coefficient of thermal expansion in a first spatial direction and a second coefficient of thermal expansion in a second spatial direction, the first and second coefficient of thermal expansions differing from one another; providing an inner component comprising glass; heating the outer frame to an expanded state having the outer frame expanded with respect to the inner component in the first spatial direction in accordance with the first coefficient of thermal expansion and expanded along the second spatial direction in accordance with the second coefficient of thermal expansion; inserting the inner component in the outer frame when in the expanded state; and cooling the outer frame so that the outer frame contracts from the expanded state until the inner component is fitted in outer frame under compressive stress.

Abstract: A method for manufacturing a plurality of generators, each intended to power supply an electronic circuit operating in a given power supply voltage range, includes a step of manufacturing coils distributed in N pluralities of coils, similar within the same plurality and different from one plurality to another, and a step of manufacturing a plurality of rotors which is carried out with tolerances limiting the cost of production. The plurality of rotors is classified into N classes of rotors which are associated respectively with the N pluralities of coils to form N pairs allowing the assembly of N groups of generators. The generators of each of the N groups of generators have magnetic coupling factors between their rotor and their stator which are located in a corresponding optimised value range, which is at least partially superimposed on the others of the N optimised value ranges relating to the N generator groups.

Abstract: A rotary electric machine rotor includes a rotor core and a core support member that supports the rotor core. The core support member includes a tubular portion formed in a tubular shape and a support portion supported so as to be rotatable with respect to a non-rotary member to support the tubular portion from the inner side in a radial direction. The core support member is formed such that a diameter of a fitting surface portion in a specific region, which includes an overlapping region which overlaps a connection region as viewed in the radial direction, is smaller than a diameter of the fitting surface portion in a general region which is a region other than the specific region.

Abstract: A piezoelectric fiber composite that includes a substrate having a first expansion and contraction rate, a piezoelectric fiber assembly having piezoelectric fibers that generate electrical charges upon application of external energy and has a second expansion and contraction rate different from the first expansion and contraction rate of the substrate, and a joint portion that joins the substrate and the piezoelectric fiber assembly.

Abstract: Disclosed is a method for manufacturing a piezoelectric AlxGa1-xN (0.5?x?1) thin film, comprising: forming a stress control layer comprised of a Group III nitride on a silicon substrate by chemical vapor deposition (CVD); and depositing a piezoelectric AlxGa1-xN (0.5?x?1) thin film on the stress control layer, the thin film being deposited by PVD at 0.3 Tm (Tm is melting temperature of a piezoelectric thin film material) or higher. Further, a method for manufacturing a device in conjunction with piezoelectric AlxGa1-xN (0.5?x?1) thin films is provided.

Abstract: In a method for producing a cooling structure over a surface of a housing of a dynamo-electric rotational machine, at least one material is applied in layers by an additive manufacturing method to the surface of the housing, omitting at least one predefined region. As a result of the application of material, at least two elevations are formed, with a cooling channel being formed between the two elevations.

Abstract: A method of manufacturing an armature includes: a step of preparing first segment conductors in which a plurality of end portions, or an end portion and a power terminal member, are electrically connected to each other; a step of disposing leg portions of the first segment conductors and leg portions of second segment conductors in an armature core; and a step of joining the leg portions of the first segment conductors and the leg portions of the second segment conductors to each other.

Abstract: A wiring board includes a conductor pattern formed on a board, and an insulating film that covers at least part of the conductor pattern. A first insulating film is provided in a first region on the board, the first region covering at least part of the conductor pattern and having a first border segment. A second insulating film is provided in a second region on the board, the second region covering at least part of the first region and having a second border segment. The second border segment is located outside the first region, and the shortest distance from any point belonging to the second border segment to the first border segment is not more than 400 ?m.

Abstract: The attachment possible period during which the attachment operation of the component supply reel can be performed is predicted for each of the tape feeders equipped in the component mounting apparatus, and the attachment time indicating a timing of the attachment operation is set to overlap the attachment possible periods of the candidate feeders, out of the tape feeders. Therefore, a frequency of the component replenishment operation of the operator can be suppressed. Further, the execution mode of the attachment operation for the candidate feeder corresponding to the attachment time is determined based on the number of the components planned to be supplied in accordance with the production planning by the candidate feeder. Therefore, a number of the components suitable for the production planning of the components-mounted boards can be replenished.

Abstract: Provided are a method of manufacturing a solid electrolyte sheet including: a step of performing preforming on inorganic solid electrolyte particles containing solid particles plastically deformable at 250° C. or lower; and a step of performing shearing processing on one surface of the obtained preformed body, in which a solid electrolyte layer consisting of the inorganic solid electrolyte particles is formed, and a method of manufacturing a negative electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery, which include the method of manufacturing a solid electrolyte sheet.

Abstract: A system for contactless testing of radio frequency apertures is provided. The system comprises a fixture having a fixture mount operable to be received in a fixture receiver of a robotic system, and a vector network analyzer (“VNA”) supported by the fixture. A radiating antenna is supported by the fixture, and is operable to be connected to the VNA via a cable. Upon movement of the fixture via the robotic system, the VNA, the radiating antenna, and the cable maintain a static positional relationship relative to one another.

Abstract: The present disclosure provides an in-mold injection molding process for a Printed Circuit Board Assembly (PCBA) soft material, including the following steps: 1) preheating a Polyethylene Terephthalate (PET) thin film; 2) printing patterns; 3) preparing a diaphragm A; 4) laminating a diaphragm on a Flexible Printed Circuit (FPC) board; 5) scraping printing ink; 6) scraping an adhesive; 7) preparing an inner diaphragm B; and 8) placing prepared diaphragm A and FPC board laminated diaphragm in a mold cavity of an injection mold of a Haitian 130T injection molding machine, preheating injection mold to 30° C., and injecting Thermoplastic Polyurethane (TPU) resin through an injection hole, so that diaphragm A is on an outer side of a product mobile phone protective shell, FPC board laminated diaphragm is on an inner side of the product mobile phone protective shell, and temperature of the TPU resin is at 180° C.

Abstract: Insulators are formed of a resin material using injection molding and provided at an end portion in an axial direction of a cylindrical stator included in a motor. Each of the insulators includes a wall portion that is formed in a cylindrical shape; a plurality of winding drum portions that consecutively extend from the wall portion so as to be along one end surface in an axial direction of the wall portion from an inner peripheral surface of the wall portion toward an inner side in a radial direction of the wall portion; and a plurality of opening portions that are formed between the respective winding drum portions, which are adjacent in the circumferential direction of the wall portion. A gate mark, which indicates an injection location of the resin material, is formed on the one end surface in the axial direction of the wall portion.

Abstract: There are provided core part manufacturing method and apparatus for manufacturing a core part of a rotary electric machine. The core part manufacturing method includes: injecting a molten resin from a side on one end surface of an iron core body into a plurality of space portions provided in the iron core body in a state where the iron core body is sandwiched and pressed. In injecting of the resin, a contact surface on an opposite side to a side where the resin is injected includes: a relief portion that is recessed without contacting to the one end surface; and a remaining portion that is adjacent to a non-contact region. The remaining portion is disposed in the contact surface on an outer peripheral side from the non-contact region, and the relief portion is disposed further in the contact surface on an outer peripheral side from the remaining portion.

Abstract: A method of making an electromagnetic coil for use in a high-temperature electromagnetic machine includes pre-coating magnet wire with a high-temperature insulation precursor to produce pre-coated magnet wire, winding, while applying in-situ a glass-ceramic slurry, the pre-coated magnet wire into a predetermined coil shape to produce a wet-wound green coil, and thermally processing the wet-wound green coil to produce a processed coil. In some instances, a second layer of a high-temperature insulation may be applied to the processed coil to produce a further insulated processed coil, and then thermally processing the further insulated processed coil to produce a further processed electromagnetic coil.

Abstract: Disclosed is a method for pulling a stator winding system of an electric machine into a stator lamination stack of the electric machine and to a winding tool, with the stator lamination stack having stator grooves which run parallel to a rotation axis of the electric machine and are distributed in a circle around the rotation axis and open thereto and which have on an end facing the rotation axis a gap region which is narrowed relative to the rest of the stator groove. Windings are arranged in the stator grooves, and winding overhangs, as seen in the direction of the rotation axis, protrude from the stator lamination stack at the two axial ends thereof, with the windings formed in the stator grooves as laid windings. The stator lamination stack has no guide structures on the two axial ends for guiding the individual turns of the windings.

Abstract: A snap adapter for a wire stripping tool has a hollow body with a tool end, a component end, and a button. The tool end is sized for insertion into the tool body and the component end is sized for receiving a component meant to strip a cable of a specified diameter. The button comprises a pin feature for attaching the received component. Inserting the component into the snap adapter forces the pin away from the snap adapter hollow body to allow for full insertion of the component into the tool body. A spring disposed between the hollow body and button pushes the pin feature upwards through the hollow body to hold the component inside the snap adapter once the component is fully inserted. Removing the component requires pushing down the button to extract the pin feature, which allows the component to be slideably removed from the tool body.