Abstract: A control method for an internal combustion engine, the internal combustion engine including a valve timing control mechanism on at least an intake side and configured to control an operation of the valve timing control mechanism on the intake side during acceleration, the method including, calculating a relational expression between an intake valve timing, the intake valve timing being an operation timing of an intake valve, and a cylinder air charge amount in a range in which the intake valve timing can be advanced or retarded within a predetermined calculation cycle from a current value, calculating a target air charge amount, the target air charge amount being a target value of the cylinder air charge amount during the acceleration, based on an operating state of the internal combustion engine, calculating a target value of the intake valve timing corresponding to the target air charge amount from the relational expression for each calculation cycle, and setting a command signal for the valve timing contr

Abstract: A control method for an internal combustion engine, the internal combustion engine including a valve timing control mechanism on at least an intake side and configured to control an operation of the valve timing control mechanism on the intake side during acceleration, the method including, calculating a relational expression between an intake valve timing, the intake valve timing being an operation timing of an intake valve, and a cylinder air charge amount in a range in which the intake valve timing can be advanced or retarded within a predetermined calculation cycle from a current value, calculating a target air charge amount, the target air charge amount being a target value of the cylinder air charge amount during the acceleration, based on an operating state of the internal combustion engine, calculating a target value of the intake valve timing corresponding to the target air charge amount from the relational expression for each calculation cycle, and setting a command signal for the valve timing contr

Abstract: A pallet changer includes: a machining-side linear guide rail 25 provided on a machining table 8 and extending in a Y-axis direction perpendicular to an X-axis direction (predetermined direction); preparation-side linear guide rails 26, 27 provided on workpiece preparation parts 9, 10 respectively, extending in the Y-axis direction, and coaxial with the machining-side linear guide rail 25; and linear guides 28 provided on respective pallets P1, P2 and slidably engageable with the machining-side and preparation-side linear guide rails 25 to 27, wherein, in changing the machining-side pallet P1 on the machining table 8 and the standby-side pallet P2 on the workpiece preparation part 10, the machining-side pallet P1 and the standby-side pallet P2 are moved in the Y-axis direction.

Abstract: A pallet changer includes: a machining-side linear guide rail 25 provided on a machining table 8 and extending in a Y-axis direction perpendicular to an X-axis direction (predetermined direction); preparation-side linear guide rails 26, 27 provided on workpiece preparation parts 9, 10 respectively, extending in the Y-axis direction, and coaxial with the machining-side linear guide rail 25; and linear guides 28 provided on respective pallets P1, P2 and slidably engageable with the machining-side and preparation-side linear guide rails 25 to 27, wherein, in changing the machining-side pallet P1 on the machining table 8 and the standby-side pallet P2 on the workpiece preparation part 10, the machining-side pallet P1 and the standby-side pallet P2 are moved in the Y-axis direction.

Abstract: An internal combustion engine intake duct device is provided with an intake duct body and an air flow directing structure. The intake duct body has an inlet, a left outlet and a right outlet with an intake air passage formed in the intake duct body for supplying intake air from the inlet to left and right outlets. The inlet is disposed on an opposite side of the intake duct body from the left and right outlets and laterally between the left and right outlets in a top plan view. The air flow directing structure is arranged in the intake duct body to direct a flow of intake air entering from the inlet toward the left and right outlets. The air flow directing structure includes a first sound reflecting part serving to block sound from the left intake pipe and a second sound reflecting part serving to block sound from the right intake pipe.

Abstract: A method of manufacturing a micro tunnel-junction circuit capable of remarkably relieving the limitation of a circuit pattern to be manufactured and remarkably relieving the limitation of a metallic material to be used. In the method, a three-layer structure is formed by laminating a first metal, an insulator, and a second metal on a substrate in this order, a narrow wall part is formed by cutting the three-layer structure in the depth direction by using a converging ion beam, at least one laterally passed through-hole is formed in the wall part by using the converging ion beam, and at least one recessed portion positioned adjacent to the hole is formed by cutting the upper surface of the wall part in the depth direction. The hole is a through-hole starting at the position of the head of the second metal to the position of the head of the substrate and the recessed part is formed to be recessed from the upper surface of the wall part into the first metal.

Abstract: Machine tool simplifying maintenance, reducing manufacturing costs, and enabling high precision machining. The machine tool is equipped with: a bed furnished with a rectangular base, right and left sidewalls provided standing either side of the base, and a rear sidewall provided standing along the back of the base; a table disposed in the space surrounded by the three sidewalls; a first saddle shaped in the form of a rectangular frame shape, provided free to shift back and forth supported on the tops of the left and right sidewalls; a second saddle penetrated by a perpendicular through-hole and arranged free to shift sideways inside the first saddle frame; and a spindle head arranged free to shift perpendicularly inside the through-hole in the second saddle; and a main spindle arranged over the table and supported by the spindle head free to rotate centered on its axis.

Abstract: An internal combustion engine intake duct device is provided with an intake duct body and an air flow directing structure. The intake duct body has an inlet, a left outlet and a right outlet with an intake air passage formed in the intake duct body for supplying intake air from the inlet to left and right outlets. The inlet is disposed on an opposite side of the intake duct body from the left and right outlets and laterally between the left and right outlets in a top plan view. The air flow directing structure is arranged in the intake duct body to direct a flow of intake air entering from the inlet toward the left and right outlets. The air flow directing structure includes a first sound reflecting part serving to block sound from the left intake pipe and a second sound reflecting part serving to block sound from the right intake pipe.

Abstract: A dishwasher includes a main body having an open front, a washer tub being extracted from and retracted into the main body through the open front, the washer tub having an open top, a lid for closing the open top of the washer tub when the washer tub is fully retracted to be accommodated in the main body, and an extension member extending backward from a top rear portion of the washer tub. When the washer tub is fully extracted from the main body, a rear end of an inner wall of the washer tub is located in front of a front end of the main body and a free end of the extension member is placed under the lid.

Abstract: Machine tool with: a bed furnished with a base and two side walls provided standing along respective left and right sides of the base; a first saddle composed of a rectangular frame, with vertical sides provided perpendicularly and transverse sides provided sideways, and both ends of the frame sideways being supported on rear faces of the side walls so as to be perpendicularly movable; a second saddle arranged within the first-saddle frame and provided to be movable sideways, and having a front-to-rear penetrating through-hole; a spindle head arranged in the second-saddle through-hole and provided to be movable back-and-forth; a tool-retaining spindle supported, by the spindle head, with its axis paralleling the front-to-rear orientation and rotatable about its axial center; and, arranged on the bed, a table on which workpieces are set.

Abstract: Machine tool with: a bed furnished with a base and two side walls provided standing along respective left and right sides of the base; a first saddle composed of a rectangular frame, with vertical sides provided perpendicularly and transverse sides provided sideways, and both ends of the frame sideways being supported on rear faces of the side walls so as to be perpendicularly movable; a second saddle arranged within the first-saddle frame and provided to be movable sideways, and having a front-to-rear penetrating through-hole; a spindle head arranged in the second-saddle through-hole and provided to be movable back-and-forth; a tool-retaining spindle supported, by the spindle head, with its axis paralleling the front-to-rear orientation and rotatable about its axial center; and, arranged on the bed, a table on which workpieces are set.

Abstract: Machine tool simplifying maintenance, reducing manufacturing costs, and enabling high precision machining. The machine tool is equipped with: a bed furnished with a rectangular base, right and left sidewalls provided standing either side of the base, and a rear sidewall provided standing along the back of the base; a table disposed in the space surrounded by the three sidewalls; a first saddle shaped in the form of a rectangular frame shape, provided free to shift back and forth supported on the tops of the left and right sidewalls; a second saddle penetrated by a perpendicular through-hole and arranged free to shift sideways inside the first saddle frame; and a spindle head arranged free to shift perpendicularly inside the through-hole in the second saddle; and a main spindle arranged over the table and supported by the spindle head free to rotate centered on its axis.

Abstract: A machine tool rotational indexing device is provided that is capable of avoiding or restraining the reduction in the preload force of any of rolling element rows or restraining the reduction in the support rigidity of the rotary-side coupling even if the preload is decreased. Rolling elements are arranged in a plurality of rolling element rows between a rotary-side coupling and a stationary-side coupling and a prescribed preload force acts when a joint coupling is located in an unclamped position. The rolling element rows are constructed of a first rolling element row arranged in a direction in which the preload force increases as the joint coupling moves to a clamped position and a second rolling element row arranged in a direction in which the preload force decreases. The first rolling element row is positioned farther apart from the meshing engagement portion of the couplings than the second rolling element row.

Abstract: There is provided a machining center capable of corresponding to both horizontal and vertical turret heads by one machine main body. The machining center includes a bed 2, a column 3 fixed on the bed 2, a saddle 4 supported by the column 3 to be movable in an X axis direction, a turret base supported by the saddle 4 to be movable in a Y axis direction, a quill 6 supported by the turret base 5 to be movable in a Z axis direction, and one of a horizontal turret head 20 and a vertical turret head 50 which are attached to the quill 6 in a selectively attachable/detachable manner, in which, on the horizontal turret head 20, a plurality of tools T are arranged to be located on a circumference whose center coincides with a quill axis C and to be parallel with the quill axis C, and on the vertical turret head 50, a plurality of tools are arranged to form a radial pattern in an orthogonal direction with respect to the quill axis C.

Abstract: A workpiece transfer device for machine tools that easily achieves positional adjustment of the rack while suppressing increases in cost and therefore preventing occurrences of vibrations and noise is disclosed. The workpiece transfer device includes a frame member having a rectangular cross-section. The device extends from a workpiece machining position to a workpiece loading/unloading position. A support member is hung on the frame member so as to be movable via a linear guide and which has a workpiece holding mechanism mounted thereon. A drive mechanism for rotationally driving a pinion gear engaged with a rack is provided on the frame member so as to be parallel to the linear guide so that the support member is moved between the two positions. The linear guide is disposed on one wall of the frame member and the rack is disposed on another wall surface so as to have its position adjustable.

Abstract: A dishwasher includes a main body having an open front, a washer tub being extracted from and retracted into the main body through the open front, the washer tub having an open top, a lid for closing the open top of the washer tub when the washer tub is fully retracted to be accommodated in the main body, and an extension member extending backward from a top rear portion of the washer tub. When the washer tub is fully extracted from the main body, a rear end of an inner wall of the washer tub is located in front of a front end of the main body and a free end of the extension member is placed under the lid.

Abstract: The present invention provides a less expensive driver having a common electric motor for individually driving a fluid pressure pump and a transport mechanism. The inventive driver (1) comprises a hydraulic cylinder (8), a hydraulic pump (6) for supplying a working fluid to the hydraulic cylinder (8), and a transport mechanism (3) for driving a pivot arm (89) to pivot the pivot arm (89). The driver (1) further comprises a common electric motor (4) for driving the hydraulic pump (6) and the transport mechanism (3), and switching means (5) for connecting the electric motor (4) switchably to the hydraulic pump (6) and to the transport mechanism (3), wherein one of the hydraulic pump (6) and the transport mechanism (3) connected to the electric motor (4) is driven by the electric motor (4).

Abstract: A machine tool is provided which is constructed so that a table pivot mechanism and cables such as a power supply line connected to the pivot mechanism are protected from chips and a coolant. The machine tool comprises: a column movable along the X-axis on a bed (11); a main spindle (12) supported by the column via a spindle head and vertically movable along the Y-axis; and a rotatable table (13) which is movable back and forth with respect to the main spindle (12) along the Z-axis on the bed (11). The table (13) is pivotally supported by a table frame which is movable along the Z-axis along slideways provided on the bed (11). A pivot mechanism such as including a servo motor and a reduction gear mechanism for pivoting the table (13) is provided on an outer side of the table frame. The bed (11) has a center trough in which a chip conveyer (18) is provided. The slideways and the table pivot mechanism are completely separated from a machining space by movable covers (22).

Abstract: A workpiece transfer device for machine tools that easily achieves positional adjustment of the rack while suppressing increases in cost and therefore preventing occurrences of vibrations and noise is disclosed. The workpiece transfer device includes a frame member having a rectangular cross-section. The device extends from a workpiece machining position to a workpiece loading/unloading position. A support member is hung on the frame member so as to be movable via a linear guide and which has a workpiece holding mechanism mounted thereon. A drive mechanism for rotationally driving a pinion gear engaged with a rack is provided on the frame member so as to be parallel to the linear guide so that the support member is moved between the two positions. The linear guide is disposed on one wall of the frame member and the rack is disposed on another wall surface so as to have its position adjustable.

Abstract: A machine tool rotational indexing device is provided that is capable of increasing transmission efficiency by preventing slip in transmitting a turning force of a gear mechanism and coping with high-speed rotational indexing with restrained heat generation. The device has a swivel slide loaded with a workpiece or a tool and is rotationally and indexably mounted in a specified rotational angle position on a fixed base. A large spur gear is provided in an outer peripheral portion of the swivel slide. A small spur gear meshed with the large spur gear is provided on an intermediate shaft arranged parallel to a rotational axis A of the swivel slide. A driving shaft arranged perpendicular to the rotational axis A and the intermediate shaft are connected to each other with a hypoid gear. The position of the large and small spur gears and the hypoid gear is adjustable to reduce backlash.