Abstract: A lubricating device of a turret type change-over device wherein a plurality of rotating bodies are mounted on a rotatable turret table, comprising: a plurality of bearings adapted to rotate the rotating bodies with respect to the rotatable turret table; a lubricating oil chamber provided in the vicinity of the bearings; and a lubricating oil tank provided within the lubricating oil chamber, the oil tank being rotated in accordance with the rotation of the turret table to retain a lubricating oil therein and supply the same to the bearings.

Abstract: A servo circuit with a failure detection mechanism comprising: a servo circuit for servo controlling on the basis of a control signal an actuator which is connected through a hydraulic circuit with a source of oil pressure and is operated by the hydraulic circuit which is changed over by a servo valve; a monitor circuit arranged in parallel relationship with the servo circuit and generating a monitor control signal; and a failure detection circuit in which the control signal of the servo circuit and the monitor control signal of the monitor circuit are inputted and which detects a failure of the servo circuit on the basis of the control signal and the monitor control signal; wherein the hydraulic circuit is provided with pressure detecting means for detecting a pressure thereof; and the monitor circuit includes a correction circuit in which a pressure signal from the pressure detecting means is inputted and which corrects a loop gain of the monitor circuit in correspondence with a value of the pressure signal

Abstract: A heddle transferring apparatus comprising: a heddle magazine having upper and lower magazine bars which have a plurality of heddles supported thereon; a heddle bar supporting rack having a plurality of upper and lower heddle bars supported thereon; means for separating one heddle from among the plurality of heddles and maintaining the separated heddle in a first predetermined position; a pair of heddle transferring chucks for transferring to a second predetermined position the heddle maintained in the first predetermined position; a pair of heddle receiving hooks for receiving the heddle transferred to the second predetermined position from the pair of heddle transferring chucks; a pair of heddle retaining bars for retaining the heddle of the second predetermined position in cooperation with the heddle receiving hooks; and a pair of heddle pushing bars for inserting the heddle received on the heddle receiving hooks on predetermined upper and lower heddle bars of the upper and lower heddle bars.

Abstract: A warp transfer apparatus for transferring warp threads to a warp drawing apparatus, comprising a stationary frame structure, a warp carrying frame structure for carrying the warp threads thereon which is movable with respect to the stationary frame structure and which has mounted thereon a rack extending along a direction in which the warp carrying frame structure moves, a pinion support rotatably supported on the stationary frame structure, a pinion rotatably supported on the pinion support and engageable with the rack, means for driving the pinion to rotate about an axis of rotation of the pinion, the warp carrying frame structure being transferred to a predetermined position of the stationary frame structure by rotation of the pinion, means for rotating the pinion support in accordance with upward and downward movements of the rack during movement of the warp carrying frame structure, with the condition the rack is properly engaged by the pinion.

Abstract: A method and apparatus for performing the method of winding a yarn on a bobbin holder so as to avoid a ribbonning phenomenon produced during winding, comprising the steps of rotating the bobbin holder; traversing the yarn along an axis of the bobbin holder to form a yarn package on the bobbin holder; setting a ribbon occurrence width and a lower limit value of a yarn winding angle at which the yarn is wound with respect to a vertical plane perpendicular to an axis of rotation of the bobbin holder; calculating an upper limit value of the yarn winding angle from the lower limit value in such a manner that a winding ratio, which is defined as a ratio of the number of rotations of the bobbin holder to the number of yarn traversing strokes, is not within the ribbon occurrence width; and as soon as the winding ratio reaches the lower limit value of the yarn winding angle, increasing rapidly the number of yarn traversing strokes from the lower limit value of the yarn winding angle to the upper limit value, and then

Abstract: A yarn traverse apparatus for winding a yarn on a bobbin, comprising setting means for setting a limit value of a crossing angle, a traverse stroke, a width of the yarn, and a ribbon occurrence region; means for detecting the number of rotations of the bobbin; means for detecting a winding speed of the yarn; means for calculating a diameter of the package in accordance with the number of rotations of the bobbin and the winding speed of the yarn; means for calculating a winding ratio in accordance with the number of turns of the yarn over two traverse strokes and with the number of turns of the yarn over one pitch corresponding to the limit value of the crossing angle, and varying the winding ratio in steps so that the winding ratio is moved outside the ribbon occurrence region when the package reaches a predetermined value within a predetermined region of the crossing angle; means for calculating the number of traverse strokes in accordance with the number of rotations of the bobbin and the winding ratio corr

Abstract: A drive method for the winding of a yarn wherein the yarn is wound on a bobbin holder and into a yarn package by contacting a contact roller with the package and controlling the number of rotations of the contact roller or tension of the yarn so as to be a predetermined value. When the contact roller is driven by an induction motor and also the contact roller is driven in pressing contact with the package by the induction motor, the number of rotations of the contact roller is given by the following equation: N=n1-(K.multidot.m (n0-n1)/T1), wherein the N indicates the number of rotations (r.p.m.) of the contact roller with which the contact roller is operated in pressing contact with the bobbin holder, the n0 indicates the number of rotations (r.p.m.) which is synchronized to the power frequency of the motor driving the contact roller, the n1 indicates the number of rotations (r.p.m.

Abstract: A swash plate plunger type pump-motor comprises a casing, a rotatable cylinder block formed with chambers, a plurality of plungers axially slideably received in the chambers, rotatable swash plate rotatably supported through a bearing within the casing, a plunger retainer adapted to prevent the plungers from disengaging from the swash plate, and a rotational shaft on which the cylinder block is fixedly mounted. The plunger retainer and the swash plate are connected with each other in such a manner that the front faces of the plunger head portions contact the swash plate and that the rear faces of the plunger head portions contact the plunger retainer. The rotational axis of the swash plate is inclined at a predetermined angle with respect to the rotational axis of the rotational shaft.

Abstract: An apparatus for passing a thread through a member formed with an opening, comprising; a first member formed with a passageway passing therethrough movable in an axial direction; the first member comprising upper and lower parts which are movable toward and away from each other in a direction substantially perpendicular to the axial direction; a second member formed with a passageway passing therethrough, the second member and the first member being movable toward and away from each in the axial direction; a unit for interposing the member formed with an opening between the first and second members; a unit for transferring the thread to the passageway of the first member; a unit for passing the thread through the passageway of the first member, the opening in the member and the passageway of the second member by vaccum suction; and a unit for taking out the thread passed through the opening of the member from the first member.

Abstract: A robot arm drive apparatus of an industrial robot comprising: an electric motor having a drive shaft; a first robot member having the electric motor mounted thereon; a second robot member rotatably supported on the first robot member; and reduction gear means for reducing rotation of the electric motor and then transmitting to the second robot member. The reduction gear means has a primary reduction gear for reducing the rotation of the electric motor and a secondary, planetary reduction gear for further reducing rotation of output of the primary reduction gear. The primary reduction gear has a reduction ratio such that the maximum number of rotations of the electric motor is reduced less than the characteristic torsion frequency of the drive system.

Abstract: An electric actuator comprising a housing, a permanent magnet disposed within the housing, an axially movable armature disposed within the permanent magnet, an actuating coil supported by the housing for driving the armature to axially move, and an axially movable actuating rod fixedly connected to the armature, wherein the electric actuator further comprises a pair of elastic support members having radially inner end portions fixedly connected to the actuating rod and radially outer end portions fixedly connected to the housing, respectively.

Abstract: A machining center in which the moment exerted on a support base and support table during a machining operation is remarkably reduced. The machining apparatus includes a pair of guide rails extending in the longitudinal direction relative to the workpiece upon which the machining head is slidably supported either directly or via a table. The rear one of this pair of guide rails is made higher than the other guide rail, thereby reducing the reaction forces exerted upon the upper surfaces of the guide rails, and hence the moment exerted on the supporting base.

Abstract: A geared motor comprising: an output shaft rotatably received in a housing; a sun gear securely supported on the output shaft in the housing and having a plurality of external teeth; a ring gear housed in the housing and having a plurality of internal teeth meshed with the external teeth of the sun gear, and the internal teeth of the ring gear having a pitch circle larger than that of the external teeth of the sun gear and being larger in number than the external teeth of the sun gear; supporting means for supporting the ring gear in such manner that the center axis of the ring gear is eccentrically revolvable with respect to the axis of rotation of the output shaft and the ring gear is prevented from being rotated about its center axis; and drive means for generating electromagnetic forces one group of which has a plurality of force directions radially inwardly directed and the other group of which has a plurality of force directions radially outwardly directed, the different groups being circumferentially s

Abstract: A yarn winding apparatus of automatic bobbin changing type comprising:a turret turnably mounted on a machine frame;a plurality of bobbin holders which are rotatably supported on the turret and which receive bobbins;the bobbin holders being alternately located at a yarn winding position where a yarn is wound onto one of the bobbins to form a full bobbin and at a doffing position where the full bobbin is doffed;a plate separator which has a cross section of an arc of a circle and which is movable from a standby position located at a side of the bobbin holders to a separating position located between the yarn winding position and the doffing position;a means for sliding the separator which is connected to the separator and which slides the separator in a lengthwise direction of the separator so that a front end of the separator moves across an imaginary line connecting centers of the bobbin holders.

Abstract: A forming disc exchanging method and apparatus for use in a forming apparatus for performing bending operations in multiple directions by timing and sequentially operating a plurality of bending slides. The forming apparatus includes a forming disc which includes a plurality of bending slides, a gear mechanism for actuating the bending slides, a product discharging device and a mold. A main forming machine has the forming disc removably attached thereto and includes a guide structure for allowing the disc to slide thereon. Further included is a truck which includes a drive device having the forming disc removably attached thereto for turning the gears, guides for allowing the disc to slide thereon, and a transfer device for sliding and transferring the forming disc.

Abstract: A thread bobbin holder device having improved sealing between shafts, and consequently less bearing wear. The bobbin holder device is constituted by a bobbin holder body with a bobbin fitted on the outer circumference thereof through a bobbin holder member. A piston controlling the amount of tension between the bobbin and the bobbin holder member is provided inside the bobbin holder body. A holder shaft and a second shaft are provided, both of which have a longitudinal throughhole formed therein. A support body rotatably supports the bobbin holder body. A shaft joint connects the holder shaft and the second shaft. A tubular elastic member is disposed in the shaft joint and is fitted into respective end portions of the holder shaft and the second shaft.

Abstract: A grip-feed machine for gripping a material in the form of strip or the like and feeding the gripped material in a bending machine which has a sun gear, comprising: a guide bracket having a guide shaft securely received therein; a cradle member having lower and upper portions and movable axially forwardly and backwardly on and along the guide shaft and formed at the lower portion thereof with a rack gear in parallel to the guide shaft; a gripping mechanism for gripping the material and feeding the gripped material in the forward and backward directions of the guide shaft; a pinion gear held in mesh with the rack gear of the cradle member; a direct current servomotor for driving the pinion gear to rotate about an axis thereof; an angular position detector having mounted thereon a detecting gear which is held in mesh with the sun gear and adapted for detecting the angular position of the detecting gear to produce a pulse signal indicative of the angular position of the detecting gear; and control mechanism for

Abstract: In a yarn take-up device in which a continuous yarn is to be helically wound on a rotating bobbin and traversed alternately in opposite directions parallel with the axis of rotation of the bobbin, a method of winding the yarn on the bobbin, comprising producing signals to control the traverse velocity of the yarn to periodically vary between predetermined minimum and maximum limits and signals to control the traverse distance of the yarn to periodically and continuously vary between predetermined maximum and minimum limits, the cycles of the periodic variation of the traverse velocity being respectively identical with the cycles of the periodic variation of the traverse distance, the maximum limits of the traverse velocity appearing in synchronism with the minimum limits of the traverse distance and the minimum limits of the traverse velocity appearing in synchronism with the maximum limits of the traverse distance.

Abstract: Respective leading and trailing end portions of two multi-filament yarns are joined together by disposing the leading and trailing end portions of the two multi-filament yarns in longitudinally contacting conditions, clamping the end portions of the multi-filament yarns at two points which are located at a predetermined distance from each other, drawing and slackening the end portions of the yarns between the two points, and blowing air under pressure toward the end portions of the yarns so that a jet stream of air impinges at a predetermined angle upon the end portions of the yarns over a predetermined length of the end portions between the two points for causing the end portions of the yarns to disintegrate into filaments over the aforesaid predetermined length and causing the filaments to entwine on one another.

Abstract: A speed change device comprises first and second outer gears, crankpins connected to the second outer gear, and pinions having pin holes for receiving the crankpins and outer gear teeth formed at the periphery thereof. The speed change device is characterized in that the pinion has through holes formed in a star shape, and a support block has a star shape corresponding to the shape of the through holes in the pinion, so that the support block is inserted into the through holes in order to support the crankpins by means of pairs of bearings.