Abstract: The present invention provides a high quality material for ring rolling. The material includes radially outer and inner peripheral surfaces. In the material, a center of gravity on a half section is located so as to be closer to the outer peripheral surface in contact with a main roll than a center of the half section in a thickness direction, a shape of the half section includes a height reducing portion having a height from a center line dividing the half section into halves in a height direction, this height is gradually reduced toward the inner peripheral surface in contact with a mandrel roll, and the shape is formed in a substantially linear symmetry such that the center line is a symmetric axis. A height of the inner peripheral surface is from 20% to 50% of a maximum height of the material.

Abstract: A manufacturing method provides a high-quality material for ring rolling. The manufacturing method of the material for ring rolling includes a step of heating a disk-shaped material for hot forging to a hot working temperature, a step of arranging the material for hot forging onto a lower die having a convex portion with a truncated conical shape, a step of forming a thin portion by pressing a center portion of the material for hot forging by using an upper die having a convex portion with a truncated conical shape, and a step of manufacturing a material for ring rolling by removing the thin portion wherein a center of gravity on a half section of the material for ring rolling is located so as to be closer to an outer peripheral surface of the half section than a center of the half section in a thickness direction of the half section.

Abstract: The present invention provides a high quality material for ring rolling. The material includes radially outer and inner peripheral surfaces. In the material, a center of gravity on a half section is located so as to be closer to the outer peripheral surface in contact with a main roll than a center of the half section in a thickness direction, a shape of the half section includes a height reducing portion having a height from a center line dividing the half section into halves in a height direction, this height is gradually reduced toward the inner peripheral surface in contact with a mandrel roll, and the shape is formed in a substantially linear symmetry such that the center line is a symmetric axis. A height of the inner peripheral surface is from 20% to 50% of a maximum height of the material.

Abstract: A manufacturing method provides a high-quality material for ring rolling. The manufacturing method of the material for ring rolling includes a step of heating a disk-shaped material for hot forging to a hot working temperature, a step of arranging the material for hot forging onto a lower die having a convex portion with a truncated conical shape, a step of forming a thin portion by pressing a center portion of the material for hot forging by using an upper die having a convex portion with a truncated conical shape, and a step of manufacturing a material for ring rolling by removing the thin portion wherein a center of gravity on a half section of the material for ring rolling is located so as to be closer to an outer peripheral surface of the half section than a center of the half section in a thickness direction of the half section.

Abstract: Plural saddle shape patches are formed on a blank material for forming a blade using a manufacturing apparatus provided with a punch support having punches each with a holder attached to be opposite with one another at a predetermined interval corresponding to a thickness of the blank material. The punch support is mounted to a second ram via a second rotational mechanism which is rotatable in a direction in which the ram moves. The die is attached to the first ram via the first rotational mechanism. The actuator controls the rotating angles of both the rotational mechanisms.

Abstract: There is provided a controlling technique for a servo press capable of optimal forming for handling variability in a sheet thickness and material property of a workpiece and for handling each workpiece. A controlling device for controlling a servo press in accordance with a slide motion data includes: measurement equipment for measuring a forming state of a workpiece, attached to a die for forming the workpiece; a measurement result receiving portion for receiving a measurement result sent from the measurement equipment; and a slide motion data changing portion for changing a slide motion data for forming the same workpiece at scheduled measuring time in accordance with the measurement result received by the measurement result receiving portion.

Abstract: In the present spinning method using elements including: a tube material; a pair of chucks which hold both ends of the tube material; and a roller having a predetermined curved shape in order to shape the tube material, in a state that circumferential portions at the both ends of the tube material are fitted in and held by circumferential grooves provided on side surfaces of the chucks, the method includes a step of transferring a curved shape on a side surface of the roller to a side surface of the tube material by rotating the chucks which hold the tube material around a first axis, rotating the roller around a second axis, moving the rotating roller in an X direction, and pressing the side surface of the roller against the side surface of the tube material between the rotating chucks.

Abstract: Plural saddle shape patches are formed on a blank material for forming a blade using a manufacturing apparatus provided with a punch support having punches each with a holder attached to be opposite with one another at a predetermined interval corresponding to a thickness of the blank material. The punch support is mounted to a second ram via a second rotational mechanism which is rotatable in a direction in which the ram moves. The die is attached to the first ram via the first rotational mechanism. The actuator controls the rotating angles of both the rotational mechanisms.

Abstract: A claw-pole type dynamo-electric machine, from which an improvement in productivity of stator winding can be expected, has such as a structure that the whole stator wiring is covered with a magnetic body, and thereby the inductance increases to pose the problem of decreasing a power factor. Disclosed is a stator core of a dynamo-electric machine in which a plurality of stator cores of respective phases are arranged independently in the direction of the rotating shaft of a rotor, the magnetic poles of the stator cores are arranged in the shape of a wave in the circumferential direction of the rotating shaft of a rotor, slots extending in the direction of the rotating shaft are formed between respective magnetic poles, and the stator winding can be arranged in a slot formed on the side of the inner end face of the magnetic pole arranged in the shape of a wave and in the axial direction of the rotating shaft.

Abstract: There is provided a controlling technique for a servo press capable of optimal forming for handling variability in a sheet thickness and material property of a workpiece and for handling each workpiece. A controlling device for controlling a servo press in accordance with a slide motion data includes: measurement equipment for measuring a forming state of a workpiece, attached to a die for forming the workpiece; a measurement result receiving portion for receiving a measurement result sent from the measurement equipment; and a slide motion data changing portion for changing a slide motion data for forming the same workpiece at scheduled measuring time in accordance with the measurement result received by the measurement result receiving portion.

Abstract: A claw-pole type dynamo-electric machine, from which an improvement in productivity of stator winding can be expected, has such as a structure that the whole stator wiring is covered with a magnetic body, and thereby the inductance increases to pose the problem of decreasing a power factor. Disclosed is a stator core of a dynamo-electric machine in which a plurality of stator cores of respective phases are arranged independently in the direction of the rotating shaft of a rotor, the magnetic poles of the stator cores are arranged in the shape of a wave in the circumferential direction of the rotating shaft of a rotor, slots extending in the direction of the rotating shaft are formed between respective magnetic poles, and the stator winding can be arranged in a slot formed on the side of the inner end face of the magnetic pole arranged in the shape of a wave and in the axial direction of the rotating shaft.

Abstract: Plural saddle shape patches are formed on a blank material for forming a blade using a manufacturing apparatus provided with a punch support having punches each with a holder attached to be opposite with one another at a predetermined interval corresponding to a thickness of the blank material. The punch support is mounted to a second ram via a second rotational mechanism which is rotatable in a direction in which the ram moves. The die is attached to the first ram via the first rotational mechanism. The actuator controls the rotating angles of both the rotational mechanisms.

Abstract: A design support apparatus including: a flow analyzer for analyzing a flow of thermosetting resin injected into a resin filling cavity to mold a resin mold product made of the thermosetting resin, using a finite difference method or a finite element method; a residual strain calculator for calculating residual strain (or stress) of the thermosetting resin after heat shrinkage of the thermosetting resin injected into the resin filling cavity to mold the resin mold product; and a strength analyzer for analyzing strength of the resin mold product, using a finite element method. According to this arrangement, strength of the resin mold product made of the thermosetting resin can be predicted accurately.

Abstract: A small semiconductor package having two electrodes, which can be produced at reduced cost and which features high reliability. The package has a structure in which an anode and a cathode are arranged on one surface of a semiconductor chip, each electrode having a bump electrode for connecting the electrode to an external substrate. An insulating resin is provided on the surface of the semiconductor chip and on the surfaces of the bump electrodes, except at least for the connection portions to the external substrate.

Abstract: A design support apparatus comprises: a flow analysis means for analyzing a flow of thermosetting resin injected into a resin filling cavity to mold a resin mold product made of the thermosetting resin, using a finite difference method or a finite element method; a residual strain calculation means for calculating residual strain (or stress) of the thermosetting resin after heat shrinkage of the thermosetting resin injected into the resin filling cavity to mold said resin mold product; and a strength analysis means for analyzing strength of said resin mold product, using a finite element method. According to this arrangement, strength of the resin mold product made of the thermosetting resin can be predicted accurately.

Abstract: A small semiconductor package having two electrodes suppressing the cost and featuring high reliability. The package has a structure in which an anode and a cathode are arranged on one surface of a semiconductor chip, each electrode having a bump electrode for connecting the electrode to an external substrate. An insulating resin is provided on the surface of the semiconductor chip and on the surfaces of the bump electrodes except at least the connection portions to the external substrate.